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From kisho...@apache.org
Subject svn commit: r1479756 [34/39] - in /incubator/helix/site-content: ./ apidocs/reference/org/apache/helix/ apidocs/reference/org/apache/helix/agent/ apidocs/reference/org/apache/helix/manager/zk/ apidocs/reference/org/apache/helix/messaging/handling/ apid...
Date Tue, 07 May 2013 03:11:00 GMT
Modified: incubator/helix/site-content/xref/org/apache/helix/manager/zk/CallbackHandler.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/manager/zk/CallbackHandler.html?rev=1479756&r1=1479755&r2=1479756&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/manager/zk/CallbackHandler.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/manager/zk/CallbackHandler.html Tue May  7 03:10:53 2013
@@ -122,401 +122,403 @@
 <a class="jxr_linenumber" name="112" href="#112">112</a> 
 <a class="jxr_linenumber" name="113" href="#113">113</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> invoke(<a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext) <strong class="jxr_keyword">throws</strong> Exception
 <a class="jxr_linenumber" name="114" href="#114">114</a>   {
-<a class="jxr_linenumber" name="115" href="#115">115</a>     <em class="jxr_comment">// remove this listener if path no longer exists after session expiry</em>
-<a class="jxr_linenumber" name="116" href="#116">116</a>     <strong class="jxr_keyword">if</strong> (changeContext.getType() == Type.INIT &amp;&amp; !_zkClient.exists(_path)) {
-<a class="jxr_linenumber" name="117" href="#117">117</a>       logger.info(<span class="jxr_string">"removing listener because path no longer exists. path: "</span> 
-<a class="jxr_linenumber" name="118" href="#118">118</a>           + _path + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="119" href="#119">119</a>       _manager.removeListener(_propertyKey, _listener);
-<a class="jxr_linenumber" name="120" href="#120">120</a>       <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="121" href="#121">121</a>     }
-<a class="jxr_linenumber" name="122" href="#122">122</a> 
-<a class="jxr_linenumber" name="123" href="#123">123</a>     <em class="jxr_comment">// This allows the listener to work with one change at a time</em>
-<a class="jxr_linenumber" name="124" href="#124">124</a>     <strong class="jxr_keyword">synchronized</strong> (_manager)
-<a class="jxr_linenumber" name="125" href="#125">125</a>     {
-<a class="jxr_linenumber" name="126" href="#126">126</a>       <em class="jxr_comment">// Builder keyBuilder = _accessor.keyBuilder();</em>
-<a class="jxr_linenumber" name="127" href="#127">127</a>       <strong class="jxr_keyword">long</strong> start = System.currentTimeMillis();
-<a class="jxr_linenumber" name="128" href="#128">128</a>       <strong class="jxr_keyword">if</strong> (logger.isInfoEnabled())
-<a class="jxr_linenumber" name="129" href="#129">129</a>       {
-<a class="jxr_linenumber" name="130" href="#130">130</a>         logger.info(Thread.currentThread().getId() + <span class="jxr_string">" START:INVOKE "</span>
-<a class="jxr_linenumber" name="131" href="#131">131</a>             + _path + <span class="jxr_string">" listener:"</span> + _listener.getClass().getCanonicalName());
-<a class="jxr_linenumber" name="132" href="#132">132</a>       }
+<a class="jxr_linenumber" name="115" href="#115">115</a>     <em class="jxr_comment">// This allows the listener to work with one change at a time</em>
+<a class="jxr_linenumber" name="116" href="#116">116</a>     <strong class="jxr_keyword">synchronized</strong> (_manager)
+<a class="jxr_linenumber" name="117" href="#117">117</a>     {
+<a class="jxr_linenumber" name="118" href="#118">118</a>       <em class="jxr_comment">// Builder keyBuilder = _accessor.keyBuilder();</em>
+<a class="jxr_linenumber" name="119" href="#119">119</a>       <strong class="jxr_keyword">long</strong> start = System.currentTimeMillis();
+<a class="jxr_linenumber" name="120" href="#120">120</a>       <strong class="jxr_keyword">if</strong> (logger.isInfoEnabled())
+<a class="jxr_linenumber" name="121" href="#121">121</a>       {
+<a class="jxr_linenumber" name="122" href="#122">122</a>         logger.info(Thread.currentThread().getId() + <span class="jxr_string">" START:INVOKE "</span>
+<a class="jxr_linenumber" name="123" href="#123">123</a>             + _path + <span class="jxr_string">" listener:"</span> + _listener.getClass().getCanonicalName());
+<a class="jxr_linenumber" name="124" href="#124">124</a>       }
+<a class="jxr_linenumber" name="125" href="#125">125</a> 
+<a class="jxr_linenumber" name="126" href="#126">126</a>       <strong class="jxr_keyword">if</strong> (_changeType == IDEAL_STATE)
+<a class="jxr_linenumber" name="127" href="#127">127</a>       {
+<a class="jxr_linenumber" name="128" href="#128">128</a> 
+<a class="jxr_linenumber" name="129" href="#129">129</a>         <a href="../../../../../org/apache/helix/IdealStateChangeListener.html">IdealStateChangeListener</a> idealStateChangeListener =
+<a class="jxr_linenumber" name="130" href="#130">130</a>             (<a href="../../../../../org/apache/helix/IdealStateChangeListener.html">IdealStateChangeListener</a>) _listener;
+<a class="jxr_linenumber" name="131" href="#131">131</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="132" href="#132">132</a>         List&lt;IdealState&gt; idealStates = _accessor.getChildValues(_propertyKey);
 <a class="jxr_linenumber" name="133" href="#133">133</a> 
-<a class="jxr_linenumber" name="134" href="#134">134</a>       <strong class="jxr_keyword">if</strong> (_changeType == IDEAL_STATE)
-<a class="jxr_linenumber" name="135" href="#135">135</a>       {
-<a class="jxr_linenumber" name="136" href="#136">136</a> 
-<a class="jxr_linenumber" name="137" href="#137">137</a>         <a href="../../../../../org/apache/helix/IdealStateChangeListener.html">IdealStateChangeListener</a> idealStateChangeListener =
-<a class="jxr_linenumber" name="138" href="#138">138</a>             (<a href="../../../../../org/apache/helix/IdealStateChangeListener.html">IdealStateChangeListener</a>) _listener;
+<a class="jxr_linenumber" name="134" href="#134">134</a>         idealStateChangeListener.onIdealStateChange(idealStates, changeContext);
+<a class="jxr_linenumber" name="135" href="#135">135</a> 
+<a class="jxr_linenumber" name="136" href="#136">136</a>       }
+<a class="jxr_linenumber" name="137" href="#137">137</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == ChangeType.INSTANCE_CONFIG)
+<a class="jxr_linenumber" name="138" href="#138">138</a>       {
 <a class="jxr_linenumber" name="139" href="#139">139</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="140" href="#140">140</a>         List&lt;IdealState&gt; idealStates = _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="141" href="#141">141</a> 
-<a class="jxr_linenumber" name="142" href="#142">142</a>         idealStateChangeListener.onIdealStateChange(idealStates, changeContext);
-<a class="jxr_linenumber" name="143" href="#143">143</a> 
-<a class="jxr_linenumber" name="144" href="#144">144</a>       }
-<a class="jxr_linenumber" name="145" href="#145">145</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == ChangeType.INSTANCE_CONFIG)
-<a class="jxr_linenumber" name="146" href="#146">146</a>       {
-<a class="jxr_linenumber" name="147" href="#147">147</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="148" href="#148">148</a>       	<strong class="jxr_keyword">if</strong> (_listener instanceof ConfigChangeListener)
-<a class="jxr_linenumber" name="149" href="#149">149</a>       	{
-<a class="jxr_linenumber" name="150" href="#150">150</a>       		ConfigChangeListener configChangeListener = (ConfigChangeListener) _listener;
-<a class="jxr_linenumber" name="151" href="#151">151</a>       		List&lt;InstanceConfig&gt; configs = _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="152" href="#152">152</a>       		configChangeListener.onConfigChange(configs, changeContext);
-<a class="jxr_linenumber" name="153" href="#153">153</a>       	} <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_listener instanceof InstanceConfigChangeListener)
-<a class="jxr_linenumber" name="154" href="#154">154</a>       	{
-<a class="jxr_linenumber" name="155" href="#155">155</a>       		InstanceConfigChangeListener listener = (InstanceConfigChangeListener) _listener;
-<a class="jxr_linenumber" name="156" href="#156">156</a>       		List&lt;InstanceConfig&gt; configs = _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="157" href="#157">157</a>       		listener.onInstanceConfigChange(configs, changeContext);    		
-<a class="jxr_linenumber" name="158" href="#158">158</a>       	}	  
-<a class="jxr_linenumber" name="159" href="#159">159</a>       }
-<a class="jxr_linenumber" name="160" href="#160">160</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == CONFIG)
-<a class="jxr_linenumber" name="161" href="#161">161</a>       {
-<a class="jxr_linenumber" name="162" href="#162">162</a>             subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="163" href="#163">163</a>       		ScopedConfigChangeListener listener = (ScopedConfigChangeListener) _listener;
-<a class="jxr_linenumber" name="164" href="#164">164</a>       		List&lt;HelixProperty&gt; configs = _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="165" href="#165">165</a>       		listener.onConfigChange(configs, changeContext);
-<a class="jxr_linenumber" name="166" href="#166">166</a>       }
-<a class="jxr_linenumber" name="167" href="#167">167</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == LIVE_INSTANCE)
-<a class="jxr_linenumber" name="168" href="#168">168</a>       {
-<a class="jxr_linenumber" name="169" href="#169">169</a>         <a href="../../../../../org/apache/helix/LiveInstanceChangeListener.html">LiveInstanceChangeListener</a> liveInstanceChangeListener =
-<a class="jxr_linenumber" name="170" href="#170">170</a>             (<a href="../../../../../org/apache/helix/LiveInstanceChangeListener.html">LiveInstanceChangeListener</a>) _listener;
-<a class="jxr_linenumber" name="171" href="#171">171</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="172" href="#172">172</a>         List&lt;LiveInstance&gt; liveInstances =
-<a class="jxr_linenumber" name="173" href="#173">173</a>             _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="174" href="#174">174</a> 
-<a class="jxr_linenumber" name="175" href="#175">175</a>         liveInstanceChangeListener.onLiveInstanceChange(liveInstances, changeContext);
-<a class="jxr_linenumber" name="176" href="#176">176</a> 
-<a class="jxr_linenumber" name="177" href="#177">177</a>       }
-<a class="jxr_linenumber" name="178" href="#178">178</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == CURRENT_STATE)
-<a class="jxr_linenumber" name="179" href="#179">179</a>       {
-<a class="jxr_linenumber" name="180" href="#180">180</a>         <a href="../../../../../org/apache/helix/CurrentStateChangeListener.html">CurrentStateChangeListener</a> currentStateChangeListener = (CurrentStateChangeListener) _listener;
-<a class="jxr_linenumber" name="181" href="#181">181</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="182" href="#182">182</a>         String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
-<a class="jxr_linenumber" name="183" href="#183">183</a> 
-<a class="jxr_linenumber" name="184" href="#184">184</a>         List&lt;CurrentState&gt; currentStates = _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="185" href="#185">185</a> 
-<a class="jxr_linenumber" name="186" href="#186">186</a>         currentStateChangeListener.onStateChange(instanceName,
-<a class="jxr_linenumber" name="187" href="#187">187</a>                                                  currentStates,
-<a class="jxr_linenumber" name="188" href="#188">188</a>                                                  changeContext);
-<a class="jxr_linenumber" name="189" href="#189">189</a> 
-<a class="jxr_linenumber" name="190" href="#190">190</a>       }
-<a class="jxr_linenumber" name="191" href="#191">191</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == MESSAGE)
-<a class="jxr_linenumber" name="192" href="#192">192</a>       {
-<a class="jxr_linenumber" name="193" href="#193">193</a>         <a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> messageListener = (MessageListener) _listener;
-<a class="jxr_linenumber" name="194" href="#194">194</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, false);
-<a class="jxr_linenumber" name="195" href="#195">195</a>         String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
-<a class="jxr_linenumber" name="196" href="#196">196</a>         List&lt;Message&gt; messages =
-<a class="jxr_linenumber" name="197" href="#197">197</a>             _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="198" href="#198">198</a> 
-<a class="jxr_linenumber" name="199" href="#199">199</a>         messageListener.onMessage(instanceName, messages, changeContext);
+<a class="jxr_linenumber" name="140" href="#140">140</a>       	<strong class="jxr_keyword">if</strong> (_listener instanceof ConfigChangeListener)
+<a class="jxr_linenumber" name="141" href="#141">141</a>       	{
+<a class="jxr_linenumber" name="142" href="#142">142</a>       		ConfigChangeListener configChangeListener = (ConfigChangeListener) _listener;
+<a class="jxr_linenumber" name="143" href="#143">143</a>       		List&lt;InstanceConfig&gt; configs = _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="144" href="#144">144</a>       		configChangeListener.onConfigChange(configs, changeContext);
+<a class="jxr_linenumber" name="145" href="#145">145</a>       	} <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_listener instanceof InstanceConfigChangeListener)
+<a class="jxr_linenumber" name="146" href="#146">146</a>       	{
+<a class="jxr_linenumber" name="147" href="#147">147</a>       		InstanceConfigChangeListener listener = (InstanceConfigChangeListener) _listener;
+<a class="jxr_linenumber" name="148" href="#148">148</a>       		List&lt;InstanceConfig&gt; configs = _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="149" href="#149">149</a>       		listener.onInstanceConfigChange(configs, changeContext);    		
+<a class="jxr_linenumber" name="150" href="#150">150</a>       	}	  
+<a class="jxr_linenumber" name="151" href="#151">151</a>       }
+<a class="jxr_linenumber" name="152" href="#152">152</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == CONFIG)
+<a class="jxr_linenumber" name="153" href="#153">153</a>       {
+<a class="jxr_linenumber" name="154" href="#154">154</a>             subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="155" href="#155">155</a>       		ScopedConfigChangeListener listener = (ScopedConfigChangeListener) _listener;
+<a class="jxr_linenumber" name="156" href="#156">156</a>       		List&lt;HelixProperty&gt; configs = _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="157" href="#157">157</a>       		listener.onConfigChange(configs, changeContext);
+<a class="jxr_linenumber" name="158" href="#158">158</a>       }
+<a class="jxr_linenumber" name="159" href="#159">159</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == LIVE_INSTANCE)
+<a class="jxr_linenumber" name="160" href="#160">160</a>       {
+<a class="jxr_linenumber" name="161" href="#161">161</a>         <a href="../../../../../org/apache/helix/LiveInstanceChangeListener.html">LiveInstanceChangeListener</a> liveInstanceChangeListener =
+<a class="jxr_linenumber" name="162" href="#162">162</a>             (<a href="../../../../../org/apache/helix/LiveInstanceChangeListener.html">LiveInstanceChangeListener</a>) _listener;
+<a class="jxr_linenumber" name="163" href="#163">163</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="164" href="#164">164</a>         List&lt;LiveInstance&gt; liveInstances =
+<a class="jxr_linenumber" name="165" href="#165">165</a>             _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="166" href="#166">166</a> 
+<a class="jxr_linenumber" name="167" href="#167">167</a>         liveInstanceChangeListener.onLiveInstanceChange(liveInstances, changeContext);
+<a class="jxr_linenumber" name="168" href="#168">168</a> 
+<a class="jxr_linenumber" name="169" href="#169">169</a>       }
+<a class="jxr_linenumber" name="170" href="#170">170</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == CURRENT_STATE)
+<a class="jxr_linenumber" name="171" href="#171">171</a>       {
+<a class="jxr_linenumber" name="172" href="#172">172</a>         <a href="../../../../../org/apache/helix/CurrentStateChangeListener.html">CurrentStateChangeListener</a> currentStateChangeListener = (CurrentStateChangeListener) _listener;
+<a class="jxr_linenumber" name="173" href="#173">173</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="174" href="#174">174</a>         String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
+<a class="jxr_linenumber" name="175" href="#175">175</a> 
+<a class="jxr_linenumber" name="176" href="#176">176</a>         List&lt;CurrentState&gt; currentStates = _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="177" href="#177">177</a> 
+<a class="jxr_linenumber" name="178" href="#178">178</a>         currentStateChangeListener.onStateChange(instanceName,
+<a class="jxr_linenumber" name="179" href="#179">179</a>                                                  currentStates,
+<a class="jxr_linenumber" name="180" href="#180">180</a>                                                  changeContext);
+<a class="jxr_linenumber" name="181" href="#181">181</a> 
+<a class="jxr_linenumber" name="182" href="#182">182</a>       }
+<a class="jxr_linenumber" name="183" href="#183">183</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == MESSAGE)
+<a class="jxr_linenumber" name="184" href="#184">184</a>       {
+<a class="jxr_linenumber" name="185" href="#185">185</a>         <a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> messageListener = (MessageListener) _listener;
+<a class="jxr_linenumber" name="186" href="#186">186</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, false);
+<a class="jxr_linenumber" name="187" href="#187">187</a>         String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
+<a class="jxr_linenumber" name="188" href="#188">188</a>         List&lt;Message&gt; messages =
+<a class="jxr_linenumber" name="189" href="#189">189</a>             _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="190" href="#190">190</a> 
+<a class="jxr_linenumber" name="191" href="#191">191</a>         messageListener.onMessage(instanceName, messages, changeContext);
+<a class="jxr_linenumber" name="192" href="#192">192</a> 
+<a class="jxr_linenumber" name="193" href="#193">193</a>       }
+<a class="jxr_linenumber" name="194" href="#194">194</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == MESSAGES_CONTROLLER)
+<a class="jxr_linenumber" name="195" href="#195">195</a>       {
+<a class="jxr_linenumber" name="196" href="#196">196</a>         <a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> messageListener = (MessageListener) _listener;
+<a class="jxr_linenumber" name="197" href="#197">197</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, false);
+<a class="jxr_linenumber" name="198" href="#198">198</a>         List&lt;Message&gt; messages =
+<a class="jxr_linenumber" name="199" href="#199">199</a>             _accessor.getChildValues(_propertyKey);
 <a class="jxr_linenumber" name="200" href="#200">200</a> 
-<a class="jxr_linenumber" name="201" href="#201">201</a>       }
-<a class="jxr_linenumber" name="202" href="#202">202</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == MESSAGES_CONTROLLER)
-<a class="jxr_linenumber" name="203" href="#203">203</a>       {
-<a class="jxr_linenumber" name="204" href="#204">204</a>         <a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> messageListener = (MessageListener) _listener;
-<a class="jxr_linenumber" name="205" href="#205">205</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, false);
-<a class="jxr_linenumber" name="206" href="#206">206</a>         List&lt;Message&gt; messages =
-<a class="jxr_linenumber" name="207" href="#207">207</a>             _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="208" href="#208">208</a> 
-<a class="jxr_linenumber" name="209" href="#209">209</a>         messageListener.onMessage(_manager.getInstanceName(), messages, changeContext);
-<a class="jxr_linenumber" name="210" href="#210">210</a> 
-<a class="jxr_linenumber" name="211" href="#211">211</a>       }
-<a class="jxr_linenumber" name="212" href="#212">212</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == EXTERNAL_VIEW)
-<a class="jxr_linenumber" name="213" href="#213">213</a>       {
-<a class="jxr_linenumber" name="214" href="#214">214</a>         <a href="../../../../../org/apache/helix/ExternalViewChangeListener.html">ExternalViewChangeListener</a> externalViewListener =
-<a class="jxr_linenumber" name="215" href="#215">215</a>             (<a href="../../../../../org/apache/helix/ExternalViewChangeListener.html">ExternalViewChangeListener</a>) _listener;
-<a class="jxr_linenumber" name="216" href="#216">216</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="217" href="#217">217</a>         List&lt;ExternalView&gt; externalViewList =
-<a class="jxr_linenumber" name="218" href="#218">218</a>             _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="219" href="#219">219</a> 
-<a class="jxr_linenumber" name="220" href="#220">220</a>         externalViewListener.onExternalViewChange(externalViewList, changeContext);
-<a class="jxr_linenumber" name="221" href="#221">221</a>       }
-<a class="jxr_linenumber" name="222" href="#222">222</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == ChangeType.CONTROLLER)
-<a class="jxr_linenumber" name="223" href="#223">223</a>       {
-<a class="jxr_linenumber" name="224" href="#224">224</a>         <a href="../../../../../org/apache/helix/ControllerChangeListener.html">ControllerChangeListener</a> controllerChangelistener =
-<a class="jxr_linenumber" name="225" href="#225">225</a>             (<a href="../../../../../org/apache/helix/ControllerChangeListener.html">ControllerChangeListener</a>) _listener;
-<a class="jxr_linenumber" name="226" href="#226">226</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, false);
-<a class="jxr_linenumber" name="227" href="#227">227</a>         controllerChangelistener.onControllerChange(changeContext);
-<a class="jxr_linenumber" name="228" href="#228">228</a>       }
-<a class="jxr_linenumber" name="229" href="#229">229</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == ChangeType.HEALTH)
-<a class="jxr_linenumber" name="230" href="#230">230</a>       {
-<a class="jxr_linenumber" name="231" href="#231">231</a>         <a href="../../../../../org/apache/helix/HealthStateChangeListener.html">HealthStateChangeListener</a> healthStateChangeListener =
-<a class="jxr_linenumber" name="232" href="#232">232</a>             (<a href="../../../../../org/apache/helix/HealthStateChangeListener.html">HealthStateChangeListener</a>) _listener;
-<a class="jxr_linenumber" name="233" href="#233">233</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// TODO: figure out</em>
-<a class="jxr_linenumber" name="234" href="#234">234</a>         <em class="jxr_comment">// settings here</em>
-<a class="jxr_linenumber" name="235" href="#235">235</a>         String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
+<a class="jxr_linenumber" name="201" href="#201">201</a>         messageListener.onMessage(_manager.getInstanceName(), messages, changeContext);
+<a class="jxr_linenumber" name="202" href="#202">202</a> 
+<a class="jxr_linenumber" name="203" href="#203">203</a>       }
+<a class="jxr_linenumber" name="204" href="#204">204</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == EXTERNAL_VIEW)
+<a class="jxr_linenumber" name="205" href="#205">205</a>       {
+<a class="jxr_linenumber" name="206" href="#206">206</a>         <a href="../../../../../org/apache/helix/ExternalViewChangeListener.html">ExternalViewChangeListener</a> externalViewListener =
+<a class="jxr_linenumber" name="207" href="#207">207</a>             (<a href="../../../../../org/apache/helix/ExternalViewChangeListener.html">ExternalViewChangeListener</a>) _listener;
+<a class="jxr_linenumber" name="208" href="#208">208</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="209" href="#209">209</a>         List&lt;ExternalView&gt; externalViewList =
+<a class="jxr_linenumber" name="210" href="#210">210</a>             _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="211" href="#211">211</a> 
+<a class="jxr_linenumber" name="212" href="#212">212</a>         externalViewListener.onExternalViewChange(externalViewList, changeContext);
+<a class="jxr_linenumber" name="213" href="#213">213</a>       }
+<a class="jxr_linenumber" name="214" href="#214">214</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == ChangeType.CONTROLLER)
+<a class="jxr_linenumber" name="215" href="#215">215</a>       {
+<a class="jxr_linenumber" name="216" href="#216">216</a>         <a href="../../../../../org/apache/helix/ControllerChangeListener.html">ControllerChangeListener</a> controllerChangelistener =
+<a class="jxr_linenumber" name="217" href="#217">217</a>             (<a href="../../../../../org/apache/helix/ControllerChangeListener.html">ControllerChangeListener</a>) _listener;
+<a class="jxr_linenumber" name="218" href="#218">218</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, false);
+<a class="jxr_linenumber" name="219" href="#219">219</a>         controllerChangelistener.onControllerChange(changeContext);
+<a class="jxr_linenumber" name="220" href="#220">220</a>       }
+<a class="jxr_linenumber" name="221" href="#221">221</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (_changeType == ChangeType.HEALTH)
+<a class="jxr_linenumber" name="222" href="#222">222</a>       {
+<a class="jxr_linenumber" name="223" href="#223">223</a>         <a href="../../../../../org/apache/helix/HealthStateChangeListener.html">HealthStateChangeListener</a> healthStateChangeListener =
+<a class="jxr_linenumber" name="224" href="#224">224</a>             (<a href="../../../../../org/apache/helix/HealthStateChangeListener.html">HealthStateChangeListener</a>) _listener;
+<a class="jxr_linenumber" name="225" href="#225">225</a>         subscribeForChanges(changeContext, _path, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// TODO: figure out</em>
+<a class="jxr_linenumber" name="226" href="#226">226</a>         <em class="jxr_comment">// settings here</em>
+<a class="jxr_linenumber" name="227" href="#227">227</a>         String instanceName = PropertyPathConfig.getInstanceNameFromPath(_path);
+<a class="jxr_linenumber" name="228" href="#228">228</a> 
+<a class="jxr_linenumber" name="229" href="#229">229</a>         List&lt;HealthStat&gt; healthReportList =
+<a class="jxr_linenumber" name="230" href="#230">230</a>             _accessor.getChildValues(_propertyKey);
+<a class="jxr_linenumber" name="231" href="#231">231</a> 
+<a class="jxr_linenumber" name="232" href="#232">232</a>         healthStateChangeListener.onHealthChange(instanceName,
+<a class="jxr_linenumber" name="233" href="#233">233</a>                                                  healthReportList,
+<a class="jxr_linenumber" name="234" href="#234">234</a>                                                  changeContext);
+<a class="jxr_linenumber" name="235" href="#235">235</a>       }
 <a class="jxr_linenumber" name="236" href="#236">236</a> 
-<a class="jxr_linenumber" name="237" href="#237">237</a>         List&lt;HealthStat&gt; healthReportList =
-<a class="jxr_linenumber" name="238" href="#238">238</a>             _accessor.getChildValues(_propertyKey);
-<a class="jxr_linenumber" name="239" href="#239">239</a> 
-<a class="jxr_linenumber" name="240" href="#240">240</a>         healthStateChangeListener.onHealthChange(instanceName,
-<a class="jxr_linenumber" name="241" href="#241">241</a>                                                  healthReportList,
-<a class="jxr_linenumber" name="242" href="#242">242</a>                                                  changeContext);
+<a class="jxr_linenumber" name="237" href="#237">237</a>       <strong class="jxr_keyword">long</strong> end = System.currentTimeMillis();
+<a class="jxr_linenumber" name="238" href="#238">238</a>       <strong class="jxr_keyword">if</strong> (logger.isInfoEnabled())
+<a class="jxr_linenumber" name="239" href="#239">239</a>       {
+<a class="jxr_linenumber" name="240" href="#240">240</a>         logger.info(Thread.currentThread().getId() + <span class="jxr_string">" END:INVOKE "</span> + _path
+<a class="jxr_linenumber" name="241" href="#241">241</a>             + <span class="jxr_string">" listener:"</span> + _listener.getClass().getCanonicalName() + <span class="jxr_string">" Took: "</span>
+<a class="jxr_linenumber" name="242" href="#242">242</a>             + (end - start) +<span class="jxr_string">"ms"</span>);
 <a class="jxr_linenumber" name="243" href="#243">243</a>       }
-<a class="jxr_linenumber" name="244" href="#244">244</a> 
-<a class="jxr_linenumber" name="245" href="#245">245</a>       <strong class="jxr_keyword">long</strong> end = System.currentTimeMillis();
-<a class="jxr_linenumber" name="246" href="#246">246</a>       <strong class="jxr_keyword">if</strong> (logger.isInfoEnabled())
-<a class="jxr_linenumber" name="247" href="#247">247</a>       {
-<a class="jxr_linenumber" name="248" href="#248">248</a>         logger.info(Thread.currentThread().getId() + <span class="jxr_string">" END:INVOKE "</span> + _path
-<a class="jxr_linenumber" name="249" href="#249">249</a>             + <span class="jxr_string">" listener:"</span> + _listener.getClass().getCanonicalName() + <span class="jxr_string">" Took: "</span>
-<a class="jxr_linenumber" name="250" href="#250">250</a>             + (end - start) +<span class="jxr_string">"ms"</span>);
-<a class="jxr_linenumber" name="251" href="#251">251</a>       }
-<a class="jxr_linenumber" name="252" href="#252">252</a>     }
-<a class="jxr_linenumber" name="253" href="#253">253</a>   }
-<a class="jxr_linenumber" name="254" href="#254">254</a> 
-<a class="jxr_linenumber" name="255" href="#255">255</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> subscribeChildChange(String path, <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> context)
-<a class="jxr_linenumber" name="256" href="#256">256</a>   {
-<a class="jxr_linenumber" name="257" href="#257">257</a> 	  NotificationContext.Type type = context.getType();
-<a class="jxr_linenumber" name="258" href="#258">258</a>       <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.INIT || type == NotificationContext.Type.CALLBACK)
-<a class="jxr_linenumber" name="259" href="#259">259</a>       {
-<a class="jxr_linenumber" name="260" href="#260">260</a>         logger.info(_manager.getInstanceName() + <span class="jxr_string">" subscribes child-change. path: "</span> 
-<a class="jxr_linenumber" name="261" href="#261">261</a>         		+ path + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="262" href="#262">262</a>         _zkClient.subscribeChildChanges(path, <strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="263" href="#263">263</a>       }
-<a class="jxr_linenumber" name="264" href="#264">264</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.FINALIZE)
-<a class="jxr_linenumber" name="265" href="#265">265</a>       {
-<a class="jxr_linenumber" name="266" href="#266">266</a>         logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe child-change. path: "</span> 
-<a class="jxr_linenumber" name="267" href="#267">267</a>         		+ path + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="268" href="#268">268</a>         
-<a class="jxr_linenumber" name="269" href="#269">269</a>         _zkClient.unsubscribeChildChanges(path, <strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="270" href="#270">270</a>       }
-<a class="jxr_linenumber" name="271" href="#271">271</a>   }
-<a class="jxr_linenumber" name="272" href="#272">272</a>   
-<a class="jxr_linenumber" name="273" href="#273">273</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> subscribeDataChange(String path, <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> context)
-<a class="jxr_linenumber" name="274" href="#274">274</a>   {
-<a class="jxr_linenumber" name="275" href="#275">275</a>     	NotificationContext.Type type = context.getType();
-<a class="jxr_linenumber" name="276" href="#276">276</a>         <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.INIT
-<a class="jxr_linenumber" name="277" href="#277">277</a>             || type == NotificationContext.Type.CALLBACK)
-<a class="jxr_linenumber" name="278" href="#278">278</a>         {
-<a class="jxr_linenumber" name="279" href="#279">279</a>           <strong class="jxr_keyword">if</strong> (logger.isDebugEnabled())
-<a class="jxr_linenumber" name="280" href="#280">280</a>           {
-<a class="jxr_linenumber" name="281" href="#281">281</a>             logger.debug(_manager.getInstanceName() + <span class="jxr_string">" subscribe data-change. path: "</span> 
-<a class="jxr_linenumber" name="282" href="#282">282</a>             		+ path + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="283" href="#283">283</a>           }
-<a class="jxr_linenumber" name="284" href="#284">284</a>           _zkClient.subscribeDataChanges(path, <strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="285" href="#285">285</a> 
-<a class="jxr_linenumber" name="286" href="#286">286</a>         }
-<a class="jxr_linenumber" name="287" href="#287">287</a>         <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.FINALIZE)
-<a class="jxr_linenumber" name="288" href="#288">288</a>         {
-<a class="jxr_linenumber" name="289" href="#289">289</a>           logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe data-change. path: "</span> 
-<a class="jxr_linenumber" name="290" href="#290">290</a>         		  + path + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="291" href="#291">291</a> 
-<a class="jxr_linenumber" name="292" href="#292">292</a>           _zkClient.unsubscribeDataChanges(path, <strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="293" href="#293">293</a>         }
-<a class="jxr_linenumber" name="294" href="#294">294</a>   }
-<a class="jxr_linenumber" name="295" href="#295">295</a>   
-<a class="jxr_linenumber" name="296" href="#296">296</a>   <em class="jxr_comment">// TODO watchParent is always true. consider remove it</em>
-<a class="jxr_linenumber" name="297" href="#297">297</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> subscribeForChanges(<a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> context,
-<a class="jxr_linenumber" name="298" href="#298">298</a>                                    String path,
-<a class="jxr_linenumber" name="299" href="#299">299</a>                                    <strong class="jxr_keyword">boolean</strong> watchParent,
-<a class="jxr_linenumber" name="300" href="#300">300</a>                                    <strong class="jxr_keyword">boolean</strong> watchChild)
-<a class="jxr_linenumber" name="301" href="#301">301</a>   {
-<a class="jxr_linenumber" name="302" href="#302">302</a>     <strong class="jxr_keyword">if</strong> (watchParent)
-<a class="jxr_linenumber" name="303" href="#303">303</a>     {
-<a class="jxr_linenumber" name="304" href="#304">304</a>     	subscribeChildChange(path, context);
-<a class="jxr_linenumber" name="305" href="#305">305</a>     }
-<a class="jxr_linenumber" name="306" href="#306">306</a> 
-<a class="jxr_linenumber" name="307" href="#307">307</a>     <strong class="jxr_keyword">if</strong> (watchChild)
-<a class="jxr_linenumber" name="308" href="#308">308</a>     {
-<a class="jxr_linenumber" name="309" href="#309">309</a>       <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="310" href="#310">310</a>       {
-<a class="jxr_linenumber" name="311" href="#311">311</a>     	<strong class="jxr_keyword">switch</strong>(_changeType)
-<a class="jxr_linenumber" name="312" href="#312">312</a>     	{
-<a class="jxr_linenumber" name="313" href="#313">313</a>         <strong class="jxr_keyword">case</strong> CURRENT_STATE:
-<a class="jxr_linenumber" name="314" href="#314">314</a>         <strong class="jxr_keyword">case</strong> IDEAL_STATE:
-<a class="jxr_linenumber" name="315" href="#315">315</a>         <strong class="jxr_keyword">case</strong> EXTERNAL_VIEW:
-<a class="jxr_linenumber" name="316" href="#316">316</a>         {
-<a class="jxr_linenumber" name="317" href="#317">317</a>             <em class="jxr_comment">// check if bucketized</em>
-<a class="jxr_linenumber" name="318" href="#318">318</a>         	BaseDataAccessor&lt;ZNRecord&gt; baseAccessor = <strong class="jxr_keyword">new</strong> ZkBaseDataAccessor&lt;ZNRecord&gt;(_zkClient);
-<a class="jxr_linenumber" name="319" href="#319">319</a>         	List&lt;ZNRecord&gt; records = baseAccessor.getChildren(path, <strong class="jxr_keyword">null</strong>, 0);
-<a class="jxr_linenumber" name="320" href="#320">320</a>         	<strong class="jxr_keyword">for</strong> (ZNRecord record : records)
-<a class="jxr_linenumber" name="321" href="#321">321</a>         	{
-<a class="jxr_linenumber" name="322" href="#322">322</a>                 <a href="../../../../../org/apache/helix/HelixProperty.html">HelixProperty</a> property = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/HelixProperty.html">HelixProperty</a>(record);
-<a class="jxr_linenumber" name="323" href="#323">323</a>             	String childPath = path + <span class="jxr_string">"/"</span> + record.getId();
-<a class="jxr_linenumber" name="324" href="#324">324</a> 
-<a class="jxr_linenumber" name="325" href="#325">325</a>                 <strong class="jxr_keyword">int</strong> bucketSize = property.getBucketSize();
-<a class="jxr_linenumber" name="326" href="#326">326</a>                 <strong class="jxr_keyword">if</strong> (bucketSize &gt; 0)
-<a class="jxr_linenumber" name="327" href="#327">327</a>                 {
-<a class="jxr_linenumber" name="328" href="#328">328</a>                   <em class="jxr_comment">// subscribe both data-change and child-change on bucketized parent node</em>
-<a class="jxr_linenumber" name="329" href="#329">329</a>                   <em class="jxr_comment">// data-change gives a delete-callback which is used to remove watch</em>
-<a class="jxr_linenumber" name="330" href="#330">330</a>                   subscribeChildChange(childPath, context);
-<a class="jxr_linenumber" name="331" href="#331">331</a>                   subscribeDataChange(childPath, context);
-<a class="jxr_linenumber" name="332" href="#332">332</a>                   
-<a class="jxr_linenumber" name="333" href="#333">333</a>                   <em class="jxr_comment">// subscribe data-change on bucketized child</em>
-<a class="jxr_linenumber" name="334" href="#334">334</a>                   List&lt;String&gt; bucketizedChildNames = _zkClient.getChildren(childPath);
-<a class="jxr_linenumber" name="335" href="#335">335</a>                   <strong class="jxr_keyword">if</strong> (bucketizedChildNames != <strong class="jxr_keyword">null</strong>) 
-<a class="jxr_linenumber" name="336" href="#336">336</a>                   {
-<a class="jxr_linenumber" name="337" href="#337">337</a>                     <strong class="jxr_keyword">for</strong> (String bucketizedChildName : bucketizedChildNames)
-<a class="jxr_linenumber" name="338" href="#338">338</a>                     {
-<a class="jxr_linenumber" name="339" href="#339">339</a>                        String bucketizedChildPath = childPath + <span class="jxr_string">"/"</span> + bucketizedChildName;
-<a class="jxr_linenumber" name="340" href="#340">340</a>                        subscribeDataChange(bucketizedChildPath, context);
-<a class="jxr_linenumber" name="341" href="#341">341</a>                     }  
-<a class="jxr_linenumber" name="342" href="#342">342</a>                   }
-<a class="jxr_linenumber" name="343" href="#343">343</a>                 } <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="344" href="#344">344</a>                 {
-<a class="jxr_linenumber" name="345" href="#345">345</a>                     subscribeDataChange(childPath, context);
-<a class="jxr_linenumber" name="346" href="#346">346</a>                 }
-<a class="jxr_linenumber" name="347" href="#347">347</a>         	}
-<a class="jxr_linenumber" name="348" href="#348">348</a>         	<strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="349" href="#349">349</a>         }
-<a class="jxr_linenumber" name="350" href="#350">350</a>         <strong class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="351" href="#351">351</a>         {
-<a class="jxr_linenumber" name="352" href="#352">352</a>             List&lt;String&gt; childNames = _zkClient.getChildren(path);
-<a class="jxr_linenumber" name="353" href="#353">353</a>             <strong class="jxr_keyword">if</strong> (childNames != <strong class="jxr_keyword">null</strong>) 
-<a class="jxr_linenumber" name="354" href="#354">354</a>             {
-<a class="jxr_linenumber" name="355" href="#355">355</a>               <strong class="jxr_keyword">for</strong> (String childName : childNames)
-<a class="jxr_linenumber" name="356" href="#356">356</a>               {
-<a class="jxr_linenumber" name="357" href="#357">357</a>                  String childPath = path + <span class="jxr_string">"/"</span> + childName;
-<a class="jxr_linenumber" name="358" href="#358">358</a>                  subscribeDataChange(childPath, context);
-<a class="jxr_linenumber" name="359" href="#359">359</a>               }  
-<a class="jxr_linenumber" name="360" href="#360">360</a>             }
-<a class="jxr_linenumber" name="361" href="#361">361</a>         	<strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="362" href="#362">362</a>         }
-<a class="jxr_linenumber" name="363" href="#363">363</a>     	}
-<a class="jxr_linenumber" name="364" href="#364">364</a>       }
-<a class="jxr_linenumber" name="365" href="#365">365</a>       <strong class="jxr_keyword">catch</strong> (ZkNoNodeException e)
-<a class="jxr_linenumber" name="366" href="#366">366</a>       {
-<a class="jxr_linenumber" name="367" href="#367">367</a>         logger.warn(<span class="jxr_string">"fail to subscribe child/data change. path: "</span> + path 
-<a class="jxr_linenumber" name="368" href="#368">368</a>         		+ <span class="jxr_string">", listener: "</span> + _listener, e);
-<a class="jxr_linenumber" name="369" href="#369">369</a>       }
-<a class="jxr_linenumber" name="370" href="#370">370</a>     }
-<a class="jxr_linenumber" name="371" href="#371">371</a> 
-<a class="jxr_linenumber" name="372" href="#372">372</a>   }
-<a class="jxr_linenumber" name="373" href="#373">373</a> 
-<a class="jxr_linenumber" name="374" href="#374">374</a>   <strong class="jxr_keyword">public</strong> EventType[] getEventTypes()
-<a class="jxr_linenumber" name="375" href="#375">375</a>   {
-<a class="jxr_linenumber" name="376" href="#376">376</a>     <strong class="jxr_keyword">return</strong> _eventTypes;
-<a class="jxr_linenumber" name="377" href="#377">377</a>   }
-<a class="jxr_linenumber" name="378" href="#378">378</a> 
-<a class="jxr_linenumber" name="379" href="#379">379</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="380" href="#380">380</a> <em class="jxr_javadoccomment">   * Invoke the listener so that it sets up the initial values from the zookeeper if any</em>
-<a class="jxr_linenumber" name="381" href="#381">381</a> <em class="jxr_javadoccomment">   * exists</em>
-<a class="jxr_linenumber" name="382" href="#382">382</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="383" href="#383">383</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="384" href="#384">384</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> init()
-<a class="jxr_linenumber" name="385" href="#385">385</a>   {
-<a class="jxr_linenumber" name="386" href="#386">386</a>     updateNotificationTime(System.nanoTime());
-<a class="jxr_linenumber" name="387" href="#387">387</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="388" href="#388">388</a>     {
-<a class="jxr_linenumber" name="389" href="#389">389</a>       <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
-<a class="jxr_linenumber" name="390" href="#390">390</a>       changeContext.setType(NotificationContext.Type.INIT);
-<a class="jxr_linenumber" name="391" href="#391">391</a>       invoke(changeContext);
-<a class="jxr_linenumber" name="392" href="#392">392</a>     }
-<a class="jxr_linenumber" name="393" href="#393">393</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="394" href="#394">394</a>     {
-<a class="jxr_linenumber" name="395" href="#395">395</a>       String msg = <span class="jxr_string">"Exception while invoking init callback for listener:"</span>+ _listener;
-<a class="jxr_linenumber" name="396" href="#396">396</a>       ZKExceptionHandler.getInstance().handle(msg, e);
-<a class="jxr_linenumber" name="397" href="#397">397</a>     }
-<a class="jxr_linenumber" name="398" href="#398">398</a>   }
-<a class="jxr_linenumber" name="399" href="#399">399</a> 
-<a class="jxr_linenumber" name="400" href="#400">400</a>   @Override
-<a class="jxr_linenumber" name="401" href="#401">401</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleDataChange(String dataPath, Object data)
-<a class="jxr_linenumber" name="402" href="#402">402</a>   {
-<a class="jxr_linenumber" name="403" href="#403">403</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="404" href="#404">404</a>     {
-<a class="jxr_linenumber" name="405" href="#405">405</a>       updateNotificationTime(System.nanoTime());
-<a class="jxr_linenumber" name="406" href="#406">406</a>       <strong class="jxr_keyword">if</strong> (dataPath != <strong class="jxr_keyword">null</strong> &amp;&amp; dataPath.startsWith(_path))
-<a class="jxr_linenumber" name="407" href="#407">407</a>       {
-<a class="jxr_linenumber" name="408" href="#408">408</a>         <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
-<a class="jxr_linenumber" name="409" href="#409">409</a>         changeContext.setType(NotificationContext.Type.CALLBACK);
-<a class="jxr_linenumber" name="410" href="#410">410</a>         invoke(changeContext);
-<a class="jxr_linenumber" name="411" href="#411">411</a>       }
-<a class="jxr_linenumber" name="412" href="#412">412</a>     }
-<a class="jxr_linenumber" name="413" href="#413">413</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="414" href="#414">414</a>     {
-<a class="jxr_linenumber" name="415" href="#415">415</a>       String msg = <span class="jxr_string">"exception in handling data-change. path: "</span> + dataPath 
-<a class="jxr_linenumber" name="416" href="#416">416</a>     		  + <span class="jxr_string">", listener: "</span> + _listener;
-<a class="jxr_linenumber" name="417" href="#417">417</a>       ZKExceptionHandler.getInstance().handle(msg, e);
-<a class="jxr_linenumber" name="418" href="#418">418</a>     }
-<a class="jxr_linenumber" name="419" href="#419">419</a>   }
-<a class="jxr_linenumber" name="420" href="#420">420</a> 
-<a class="jxr_linenumber" name="421" href="#421">421</a>   @Override
-<a class="jxr_linenumber" name="422" href="#422">422</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleDataDeleted(String dataPath)
-<a class="jxr_linenumber" name="423" href="#423">423</a>   {
-<a class="jxr_linenumber" name="424" href="#424">424</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="425" href="#425">425</a>     {
-<a class="jxr_linenumber" name="426" href="#426">426</a>       updateNotificationTime(System.nanoTime());
-<a class="jxr_linenumber" name="427" href="#427">427</a>       <strong class="jxr_keyword">if</strong> (dataPath != <strong class="jxr_keyword">null</strong> &amp;&amp; dataPath.startsWith(_path))
-<a class="jxr_linenumber" name="428" href="#428">428</a>       {
-<a class="jxr_linenumber" name="429" href="#429">429</a>           logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe data-change. path: "</span> 
-<a class="jxr_linenumber" name="430" href="#430">430</a>         		  + dataPath + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="431" href="#431">431</a>           _zkClient.unsubscribeDataChanges(dataPath, <strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="432" href="#432">432</a> 
-<a class="jxr_linenumber" name="433" href="#433">433</a>           <em class="jxr_comment">// only needed for bucketized parent, but OK if we don't have child-change </em>
-<a class="jxr_linenumber" name="434" href="#434">434</a>           <em class="jxr_comment">//  watch on the bucketized parent path</em>
-<a class="jxr_linenumber" name="435" href="#435">435</a>           logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe child-change. path: "</span>
-<a class="jxr_linenumber" name="436" href="#436">436</a>         		  + dataPath + <span class="jxr_string">", listener: "</span> + _listener);
-<a class="jxr_linenumber" name="437" href="#437">437</a>           _zkClient.unsubscribeChildChanges(dataPath, <strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="438" href="#438">438</a>           <em class="jxr_comment">// No need to invoke() since this event will handled by child-change on parent-node</em>
-<a class="jxr_linenumber" name="439" href="#439">439</a> <em class="jxr_comment">//        NotificationContext changeContext = new NotificationContext(_manager);</em>
-<a class="jxr_linenumber" name="440" href="#440">440</a> <em class="jxr_comment">//        changeContext.setType(NotificationContext.Type.CALLBACK);</em>
-<a class="jxr_linenumber" name="441" href="#441">441</a> <em class="jxr_comment">// 		  invoke(changeContext);</em>
-<a class="jxr_linenumber" name="442" href="#442">442</a>       }
-<a class="jxr_linenumber" name="443" href="#443">443</a>     }
-<a class="jxr_linenumber" name="444" href="#444">444</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="445" href="#445">445</a>     {
-<a class="jxr_linenumber" name="446" href="#446">446</a>       String msg = <span class="jxr_string">"exception in handling data-delete-change. path: "</span> + dataPath 
-<a class="jxr_linenumber" name="447" href="#447">447</a>           + <span class="jxr_string">", listener: "</span> + _listener;
-<a class="jxr_linenumber" name="448" href="#448">448</a>       ZKExceptionHandler.getInstance().handle(msg, e);
-<a class="jxr_linenumber" name="449" href="#449">449</a>     }
-<a class="jxr_linenumber" name="450" href="#450">450</a>   }
-<a class="jxr_linenumber" name="451" href="#451">451</a> 
-<a class="jxr_linenumber" name="452" href="#452">452</a>   @Override
-<a class="jxr_linenumber" name="453" href="#453">453</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleChildChange(String parentPath, List&lt;String&gt; currentChilds)
-<a class="jxr_linenumber" name="454" href="#454">454</a>   {
-<a class="jxr_linenumber" name="455" href="#455">455</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="456" href="#456">456</a>     {
-<a class="jxr_linenumber" name="457" href="#457">457</a>       updateNotificationTime(System.nanoTime());
-<a class="jxr_linenumber" name="458" href="#458">458</a>       <strong class="jxr_keyword">if</strong> (parentPath != <strong class="jxr_keyword">null</strong> &amp;&amp; parentPath.startsWith(_path))
-<a class="jxr_linenumber" name="459" href="#459">459</a>       {
-<a class="jxr_linenumber" name="460" href="#460">460</a>         <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
-<a class="jxr_linenumber" name="461" href="#461">461</a>         changeContext.setType(NotificationContext.Type.CALLBACK);
-<a class="jxr_linenumber" name="462" href="#462">462</a>         invoke(changeContext);
-<a class="jxr_linenumber" name="463" href="#463">463</a>       }
-<a class="jxr_linenumber" name="464" href="#464">464</a>     }
-<a class="jxr_linenumber" name="465" href="#465">465</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="466" href="#466">466</a>     {
-<a class="jxr_linenumber" name="467" href="#467">467</a>       String msg = <span class="jxr_string">"exception in handling child-change. instance: "</span> + _manager.getInstanceName() 
-<a class="jxr_linenumber" name="468" href="#468">468</a>     		  + <span class="jxr_string">", parentPath: "</span> + parentPath + <span class="jxr_string">", listener: "</span> + _listener;
-<a class="jxr_linenumber" name="469" href="#469">469</a>       ZKExceptionHandler.getInstance().handle(msg, e);
-<a class="jxr_linenumber" name="470" href="#470">470</a>     }
-<a class="jxr_linenumber" name="471" href="#471">471</a>   }
-<a class="jxr_linenumber" name="472" href="#472">472</a> 
-<a class="jxr_linenumber" name="473" href="#473">473</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="474" href="#474">474</a> <em class="jxr_javadoccomment">   * Invoke the listener for the last time so that the listener could clean up resources</em>
-<a class="jxr_linenumber" name="475" href="#475">475</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="476" href="#476">476</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="477" href="#477">477</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> reset()
-<a class="jxr_linenumber" name="478" href="#478">478</a>   {
-<a class="jxr_linenumber" name="479" href="#479">479</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="480" href="#480">480</a>     {
-<a class="jxr_linenumber" name="481" href="#481">481</a>       <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
-<a class="jxr_linenumber" name="482" href="#482">482</a>       changeContext.setType(NotificationContext.Type.FINALIZE);
-<a class="jxr_linenumber" name="483" href="#483">483</a>       invoke(changeContext);
-<a class="jxr_linenumber" name="484" href="#484">484</a>     }
-<a class="jxr_linenumber" name="485" href="#485">485</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="486" href="#486">486</a>     {
-<a class="jxr_linenumber" name="487" href="#487">487</a>       String msg = <span class="jxr_string">"Exception while resetting the listener:"</span>+_listener;
-<a class="jxr_linenumber" name="488" href="#488">488</a>       ZKExceptionHandler.getInstance().handle(msg, e);
-<a class="jxr_linenumber" name="489" href="#489">489</a>     }
-<a class="jxr_linenumber" name="490" href="#490">490</a>   }
-<a class="jxr_linenumber" name="491" href="#491">491</a> 
-<a class="jxr_linenumber" name="492" href="#492">492</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> updateNotificationTime(<strong class="jxr_keyword">long</strong> nanoTime)
-<a class="jxr_linenumber" name="493" href="#493">493</a>   {
-<a class="jxr_linenumber" name="494" href="#494">494</a>     <strong class="jxr_keyword">long</strong> l = _lastNotificationTimeStamp.get();
-<a class="jxr_linenumber" name="495" href="#495">495</a>     <strong class="jxr_keyword">while</strong> (nanoTime &gt; l)
-<a class="jxr_linenumber" name="496" href="#496">496</a>     {
-<a class="jxr_linenumber" name="497" href="#497">497</a>       <strong class="jxr_keyword">boolean</strong> b = _lastNotificationTimeStamp.compareAndSet(l, nanoTime);
-<a class="jxr_linenumber" name="498" href="#498">498</a>       <strong class="jxr_keyword">if</strong> (b)
-<a class="jxr_linenumber" name="499" href="#499">499</a>       {
-<a class="jxr_linenumber" name="500" href="#500">500</a>         <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="501" href="#501">501</a>       }
-<a class="jxr_linenumber" name="502" href="#502">502</a>       <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="503" href="#503">503</a>       {
-<a class="jxr_linenumber" name="504" href="#504">504</a>         l = _lastNotificationTimeStamp.get();
-<a class="jxr_linenumber" name="505" href="#505">505</a>       }
-<a class="jxr_linenumber" name="506" href="#506">506</a>     }
-<a class="jxr_linenumber" name="507" href="#507">507</a>   }
-<a class="jxr_linenumber" name="508" href="#508">508</a> 
-<a class="jxr_linenumber" name="509" href="#509">509</a> }
+<a class="jxr_linenumber" name="244" href="#244">244</a>     }
+<a class="jxr_linenumber" name="245" href="#245">245</a>   }
+<a class="jxr_linenumber" name="246" href="#246">246</a> 
+<a class="jxr_linenumber" name="247" href="#247">247</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> subscribeChildChange(String path, <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> context)
+<a class="jxr_linenumber" name="248" href="#248">248</a>   {
+<a class="jxr_linenumber" name="249" href="#249">249</a> 	  NotificationContext.Type type = context.getType();
+<a class="jxr_linenumber" name="250" href="#250">250</a>       <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.INIT || type == NotificationContext.Type.CALLBACK)
+<a class="jxr_linenumber" name="251" href="#251">251</a>       {
+<a class="jxr_linenumber" name="252" href="#252">252</a>         logger.info(_manager.getInstanceName() + <span class="jxr_string">" subscribes child-change. path: "</span> 
+<a class="jxr_linenumber" name="253" href="#253">253</a>         		+ path + <span class="jxr_string">", listener: "</span> + _listener);
+<a class="jxr_linenumber" name="254" href="#254">254</a>         _zkClient.subscribeChildChanges(path, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="255" href="#255">255</a>       }
+<a class="jxr_linenumber" name="256" href="#256">256</a>       <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.FINALIZE)
+<a class="jxr_linenumber" name="257" href="#257">257</a>       {
+<a class="jxr_linenumber" name="258" href="#258">258</a>         logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe child-change. path: "</span> 
+<a class="jxr_linenumber" name="259" href="#259">259</a>         		+ path + <span class="jxr_string">", listener: "</span> + _listener);
+<a class="jxr_linenumber" name="260" href="#260">260</a>         
+<a class="jxr_linenumber" name="261" href="#261">261</a>         _zkClient.unsubscribeChildChanges(path, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="262" href="#262">262</a>       }
+<a class="jxr_linenumber" name="263" href="#263">263</a>   }
+<a class="jxr_linenumber" name="264" href="#264">264</a>   
+<a class="jxr_linenumber" name="265" href="#265">265</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> subscribeDataChange(String path, <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> context)
+<a class="jxr_linenumber" name="266" href="#266">266</a>   {
+<a class="jxr_linenumber" name="267" href="#267">267</a>     	NotificationContext.Type type = context.getType();
+<a class="jxr_linenumber" name="268" href="#268">268</a>         <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.INIT
+<a class="jxr_linenumber" name="269" href="#269">269</a>             || type == NotificationContext.Type.CALLBACK)
+<a class="jxr_linenumber" name="270" href="#270">270</a>         {
+<a class="jxr_linenumber" name="271" href="#271">271</a>           <strong class="jxr_keyword">if</strong> (logger.isDebugEnabled())
+<a class="jxr_linenumber" name="272" href="#272">272</a>           {
+<a class="jxr_linenumber" name="273" href="#273">273</a>             logger.debug(_manager.getInstanceName() + <span class="jxr_string">" subscribe data-change. path: "</span> 
+<a class="jxr_linenumber" name="274" href="#274">274</a>             		+ path + <span class="jxr_string">", listener: "</span> + _listener);
+<a class="jxr_linenumber" name="275" href="#275">275</a>           }
+<a class="jxr_linenumber" name="276" href="#276">276</a>           _zkClient.subscribeDataChanges(path, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="277" href="#277">277</a> 
+<a class="jxr_linenumber" name="278" href="#278">278</a>         }
+<a class="jxr_linenumber" name="279" href="#279">279</a>         <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (type == NotificationContext.Type.FINALIZE)
+<a class="jxr_linenumber" name="280" href="#280">280</a>         {
+<a class="jxr_linenumber" name="281" href="#281">281</a>           logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe data-change. path: "</span> 
+<a class="jxr_linenumber" name="282" href="#282">282</a>         		  + path + <span class="jxr_string">", listener: "</span> + _listener);
+<a class="jxr_linenumber" name="283" href="#283">283</a> 
+<a class="jxr_linenumber" name="284" href="#284">284</a>           _zkClient.unsubscribeDataChanges(path, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="285" href="#285">285</a>         }
+<a class="jxr_linenumber" name="286" href="#286">286</a>   }
+<a class="jxr_linenumber" name="287" href="#287">287</a>   
+<a class="jxr_linenumber" name="288" href="#288">288</a>   <em class="jxr_comment">// TODO watchParent is always true. consider remove it</em>
+<a class="jxr_linenumber" name="289" href="#289">289</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> subscribeForChanges(<a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> context,
+<a class="jxr_linenumber" name="290" href="#290">290</a>                                    String path,
+<a class="jxr_linenumber" name="291" href="#291">291</a>                                    <strong class="jxr_keyword">boolean</strong> watchParent,
+<a class="jxr_linenumber" name="292" href="#292">292</a>                                    <strong class="jxr_keyword">boolean</strong> watchChild)
+<a class="jxr_linenumber" name="293" href="#293">293</a>   {
+<a class="jxr_linenumber" name="294" href="#294">294</a>     <strong class="jxr_keyword">if</strong> (watchParent)
+<a class="jxr_linenumber" name="295" href="#295">295</a>     {
+<a class="jxr_linenumber" name="296" href="#296">296</a>     	subscribeChildChange(path, context);
+<a class="jxr_linenumber" name="297" href="#297">297</a>     }
+<a class="jxr_linenumber" name="298" href="#298">298</a> 
+<a class="jxr_linenumber" name="299" href="#299">299</a>     <strong class="jxr_keyword">if</strong> (watchChild)
+<a class="jxr_linenumber" name="300" href="#300">300</a>     {
+<a class="jxr_linenumber" name="301" href="#301">301</a>       <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="302" href="#302">302</a>       {
+<a class="jxr_linenumber" name="303" href="#303">303</a>     	<strong class="jxr_keyword">switch</strong>(_changeType)
+<a class="jxr_linenumber" name="304" href="#304">304</a>     	{
+<a class="jxr_linenumber" name="305" href="#305">305</a>         <strong class="jxr_keyword">case</strong> CURRENT_STATE:
+<a class="jxr_linenumber" name="306" href="#306">306</a>         <strong class="jxr_keyword">case</strong> IDEAL_STATE:
+<a class="jxr_linenumber" name="307" href="#307">307</a>         <strong class="jxr_keyword">case</strong> EXTERNAL_VIEW:
+<a class="jxr_linenumber" name="308" href="#308">308</a>         {
+<a class="jxr_linenumber" name="309" href="#309">309</a>             <em class="jxr_comment">// check if bucketized</em>
+<a class="jxr_linenumber" name="310" href="#310">310</a>         	BaseDataAccessor&lt;ZNRecord&gt; baseAccessor = <strong class="jxr_keyword">new</strong> ZkBaseDataAccessor&lt;ZNRecord&gt;(_zkClient);
+<a class="jxr_linenumber" name="311" href="#311">311</a>         	List&lt;ZNRecord&gt; records = baseAccessor.getChildren(path, <strong class="jxr_keyword">null</strong>, 0);
+<a class="jxr_linenumber" name="312" href="#312">312</a>         	<strong class="jxr_keyword">for</strong> (ZNRecord record : records)
+<a class="jxr_linenumber" name="313" href="#313">313</a>         	{
+<a class="jxr_linenumber" name="314" href="#314">314</a>                 <a href="../../../../../org/apache/helix/HelixProperty.html">HelixProperty</a> property = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/HelixProperty.html">HelixProperty</a>(record);
+<a class="jxr_linenumber" name="315" href="#315">315</a>             	String childPath = path + <span class="jxr_string">"/"</span> + record.getId();
+<a class="jxr_linenumber" name="316" href="#316">316</a> 
+<a class="jxr_linenumber" name="317" href="#317">317</a>                 <strong class="jxr_keyword">int</strong> bucketSize = property.getBucketSize();
+<a class="jxr_linenumber" name="318" href="#318">318</a>                 <strong class="jxr_keyword">if</strong> (bucketSize &gt; 0)
+<a class="jxr_linenumber" name="319" href="#319">319</a>                 {
+<a class="jxr_linenumber" name="320" href="#320">320</a>                   <em class="jxr_comment">// subscribe both data-change and child-change on bucketized parent node</em>
+<a class="jxr_linenumber" name="321" href="#321">321</a>                   <em class="jxr_comment">// data-change gives a delete-callback which is used to remove watch</em>
+<a class="jxr_linenumber" name="322" href="#322">322</a>                   subscribeChildChange(childPath, context);
+<a class="jxr_linenumber" name="323" href="#323">323</a>                   subscribeDataChange(childPath, context);
+<a class="jxr_linenumber" name="324" href="#324">324</a>                   
+<a class="jxr_linenumber" name="325" href="#325">325</a>                   <em class="jxr_comment">// subscribe data-change on bucketized child</em>
+<a class="jxr_linenumber" name="326" href="#326">326</a>                   List&lt;String&gt; bucketizedChildNames = _zkClient.getChildren(childPath);
+<a class="jxr_linenumber" name="327" href="#327">327</a>                   <strong class="jxr_keyword">if</strong> (bucketizedChildNames != <strong class="jxr_keyword">null</strong>) 
+<a class="jxr_linenumber" name="328" href="#328">328</a>                   {
+<a class="jxr_linenumber" name="329" href="#329">329</a>                     <strong class="jxr_keyword">for</strong> (String bucketizedChildName : bucketizedChildNames)
+<a class="jxr_linenumber" name="330" href="#330">330</a>                     {
+<a class="jxr_linenumber" name="331" href="#331">331</a>                        String bucketizedChildPath = childPath + <span class="jxr_string">"/"</span> + bucketizedChildName;
+<a class="jxr_linenumber" name="332" href="#332">332</a>                        subscribeDataChange(bucketizedChildPath, context);
+<a class="jxr_linenumber" name="333" href="#333">333</a>                     }  
+<a class="jxr_linenumber" name="334" href="#334">334</a>                   }
+<a class="jxr_linenumber" name="335" href="#335">335</a>                 } <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="336" href="#336">336</a>                 {
+<a class="jxr_linenumber" name="337" href="#337">337</a>                     subscribeDataChange(childPath, context);
+<a class="jxr_linenumber" name="338" href="#338">338</a>                 }
+<a class="jxr_linenumber" name="339" href="#339">339</a>         	}
+<a class="jxr_linenumber" name="340" href="#340">340</a>         	<strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="341" href="#341">341</a>         }
+<a class="jxr_linenumber" name="342" href="#342">342</a>         <strong class="jxr_keyword">default</strong>:
+<a class="jxr_linenumber" name="343" href="#343">343</a>         {
+<a class="jxr_linenumber" name="344" href="#344">344</a>             List&lt;String&gt; childNames = _zkClient.getChildren(path);
+<a class="jxr_linenumber" name="345" href="#345">345</a>             <strong class="jxr_keyword">if</strong> (childNames != <strong class="jxr_keyword">null</strong>) 
+<a class="jxr_linenumber" name="346" href="#346">346</a>             {
+<a class="jxr_linenumber" name="347" href="#347">347</a>               <strong class="jxr_keyword">for</strong> (String childName : childNames)
+<a class="jxr_linenumber" name="348" href="#348">348</a>               {
+<a class="jxr_linenumber" name="349" href="#349">349</a>                  String childPath = path + <span class="jxr_string">"/"</span> + childName;
+<a class="jxr_linenumber" name="350" href="#350">350</a>                  subscribeDataChange(childPath, context);
+<a class="jxr_linenumber" name="351" href="#351">351</a>               }  
+<a class="jxr_linenumber" name="352" href="#352">352</a>             }
+<a class="jxr_linenumber" name="353" href="#353">353</a>         	<strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="354" href="#354">354</a>         }
+<a class="jxr_linenumber" name="355" href="#355">355</a>     	}
+<a class="jxr_linenumber" name="356" href="#356">356</a>       }
+<a class="jxr_linenumber" name="357" href="#357">357</a>       <strong class="jxr_keyword">catch</strong> (ZkNoNodeException e)
+<a class="jxr_linenumber" name="358" href="#358">358</a>       {
+<a class="jxr_linenumber" name="359" href="#359">359</a>         logger.warn(<span class="jxr_string">"fail to subscribe child/data change. path: "</span> + path 
+<a class="jxr_linenumber" name="360" href="#360">360</a>         		+ <span class="jxr_string">", listener: "</span> + _listener, e);
+<a class="jxr_linenumber" name="361" href="#361">361</a>       }
+<a class="jxr_linenumber" name="362" href="#362">362</a>     }
+<a class="jxr_linenumber" name="363" href="#363">363</a> 
+<a class="jxr_linenumber" name="364" href="#364">364</a>   }
+<a class="jxr_linenumber" name="365" href="#365">365</a> 
+<a class="jxr_linenumber" name="366" href="#366">366</a>   <strong class="jxr_keyword">public</strong> EventType[] getEventTypes()
+<a class="jxr_linenumber" name="367" href="#367">367</a>   {
+<a class="jxr_linenumber" name="368" href="#368">368</a>     <strong class="jxr_keyword">return</strong> _eventTypes;
+<a class="jxr_linenumber" name="369" href="#369">369</a>   }
+<a class="jxr_linenumber" name="370" href="#370">370</a> 
+<a class="jxr_linenumber" name="371" href="#371">371</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="372" href="#372">372</a> <em class="jxr_javadoccomment">   * Invoke the listener so that it sets up the initial values from the zookeeper if any</em>
+<a class="jxr_linenumber" name="373" href="#373">373</a> <em class="jxr_javadoccomment">   * exists</em>
+<a class="jxr_linenumber" name="374" href="#374">374</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="375" href="#375">375</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="376" href="#376">376</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> init()
+<a class="jxr_linenumber" name="377" href="#377">377</a>   {
+<a class="jxr_linenumber" name="378" href="#378">378</a>     updateNotificationTime(System.nanoTime());
+<a class="jxr_linenumber" name="379" href="#379">379</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="380" href="#380">380</a>     {
+<a class="jxr_linenumber" name="381" href="#381">381</a>       <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
+<a class="jxr_linenumber" name="382" href="#382">382</a>       changeContext.setType(NotificationContext.Type.INIT);
+<a class="jxr_linenumber" name="383" href="#383">383</a>       invoke(changeContext);
+<a class="jxr_linenumber" name="384" href="#384">384</a>     }
+<a class="jxr_linenumber" name="385" href="#385">385</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="386" href="#386">386</a>     {
+<a class="jxr_linenumber" name="387" href="#387">387</a>       String msg = <span class="jxr_string">"Exception while invoking init callback for listener:"</span>+ _listener;
+<a class="jxr_linenumber" name="388" href="#388">388</a>       ZKExceptionHandler.getInstance().handle(msg, e);
+<a class="jxr_linenumber" name="389" href="#389">389</a>     }
+<a class="jxr_linenumber" name="390" href="#390">390</a>   }
+<a class="jxr_linenumber" name="391" href="#391">391</a> 
+<a class="jxr_linenumber" name="392" href="#392">392</a>   @Override
+<a class="jxr_linenumber" name="393" href="#393">393</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleDataChange(String dataPath, Object data)
+<a class="jxr_linenumber" name="394" href="#394">394</a>   {
+<a class="jxr_linenumber" name="395" href="#395">395</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="396" href="#396">396</a>     {
+<a class="jxr_linenumber" name="397" href="#397">397</a>       updateNotificationTime(System.nanoTime());
+<a class="jxr_linenumber" name="398" href="#398">398</a>       <strong class="jxr_keyword">if</strong> (dataPath != <strong class="jxr_keyword">null</strong> &amp;&amp; dataPath.startsWith(_path))
+<a class="jxr_linenumber" name="399" href="#399">399</a>       {
+<a class="jxr_linenumber" name="400" href="#400">400</a>         <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
+<a class="jxr_linenumber" name="401" href="#401">401</a>         changeContext.setType(NotificationContext.Type.CALLBACK);
+<a class="jxr_linenumber" name="402" href="#402">402</a>         invoke(changeContext);
+<a class="jxr_linenumber" name="403" href="#403">403</a>       }
+<a class="jxr_linenumber" name="404" href="#404">404</a>     }
+<a class="jxr_linenumber" name="405" href="#405">405</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="406" href="#406">406</a>     {
+<a class="jxr_linenumber" name="407" href="#407">407</a>       String msg = <span class="jxr_string">"exception in handling data-change. path: "</span> + dataPath 
+<a class="jxr_linenumber" name="408" href="#408">408</a>     		  + <span class="jxr_string">", listener: "</span> + _listener;
+<a class="jxr_linenumber" name="409" href="#409">409</a>       ZKExceptionHandler.getInstance().handle(msg, e);
+<a class="jxr_linenumber" name="410" href="#410">410</a>     }
+<a class="jxr_linenumber" name="411" href="#411">411</a>   }
+<a class="jxr_linenumber" name="412" href="#412">412</a> 
+<a class="jxr_linenumber" name="413" href="#413">413</a>   @Override
+<a class="jxr_linenumber" name="414" href="#414">414</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleDataDeleted(String dataPath)
+<a class="jxr_linenumber" name="415" href="#415">415</a>   {
+<a class="jxr_linenumber" name="416" href="#416">416</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="417" href="#417">417</a>     {
+<a class="jxr_linenumber" name="418" href="#418">418</a>       updateNotificationTime(System.nanoTime());
+<a class="jxr_linenumber" name="419" href="#419">419</a>       <strong class="jxr_keyword">if</strong> (dataPath != <strong class="jxr_keyword">null</strong> &amp;&amp; dataPath.startsWith(_path))
+<a class="jxr_linenumber" name="420" href="#420">420</a>       {
+<a class="jxr_linenumber" name="421" href="#421">421</a>           logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe data-change. path: "</span> 
+<a class="jxr_linenumber" name="422" href="#422">422</a>         		  + dataPath + <span class="jxr_string">", listener: "</span> + _listener);
+<a class="jxr_linenumber" name="423" href="#423">423</a>           _zkClient.unsubscribeDataChanges(dataPath, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="424" href="#424">424</a> 
+<a class="jxr_linenumber" name="425" href="#425">425</a>           <em class="jxr_comment">// only needed for bucketized parent, but OK if we don't have child-change </em>
+<a class="jxr_linenumber" name="426" href="#426">426</a>           <em class="jxr_comment">//  watch on the bucketized parent path</em>
+<a class="jxr_linenumber" name="427" href="#427">427</a>           logger.info(_manager.getInstanceName() + <span class="jxr_string">" unsubscribe child-change. path: "</span>
+<a class="jxr_linenumber" name="428" href="#428">428</a>         		  + dataPath + <span class="jxr_string">", listener: "</span> + _listener);
+<a class="jxr_linenumber" name="429" href="#429">429</a>           _zkClient.unsubscribeChildChanges(dataPath, <strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="430" href="#430">430</a>           <em class="jxr_comment">// No need to invoke() since this event will handled by child-change on parent-node</em>
+<a class="jxr_linenumber" name="431" href="#431">431</a> <em class="jxr_comment">//        NotificationContext changeContext = new NotificationContext(_manager);</em>
+<a class="jxr_linenumber" name="432" href="#432">432</a> <em class="jxr_comment">//        changeContext.setType(NotificationContext.Type.CALLBACK);</em>
+<a class="jxr_linenumber" name="433" href="#433">433</a> <em class="jxr_comment">// 		  invoke(changeContext);</em>
+<a class="jxr_linenumber" name="434" href="#434">434</a>       }
+<a class="jxr_linenumber" name="435" href="#435">435</a>     }
+<a class="jxr_linenumber" name="436" href="#436">436</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="437" href="#437">437</a>     {
+<a class="jxr_linenumber" name="438" href="#438">438</a>       String msg = <span class="jxr_string">"exception in handling data-delete-change. path: "</span> + dataPath 
+<a class="jxr_linenumber" name="439" href="#439">439</a>           + <span class="jxr_string">", listener: "</span> + _listener;
+<a class="jxr_linenumber" name="440" href="#440">440</a>       ZKExceptionHandler.getInstance().handle(msg, e);
+<a class="jxr_linenumber" name="441" href="#441">441</a>     }
+<a class="jxr_linenumber" name="442" href="#442">442</a>   }
+<a class="jxr_linenumber" name="443" href="#443">443</a> 
+<a class="jxr_linenumber" name="444" href="#444">444</a>   @Override
+<a class="jxr_linenumber" name="445" href="#445">445</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handleChildChange(String parentPath, List&lt;String&gt; currentChilds)
+<a class="jxr_linenumber" name="446" href="#446">446</a>   {
+<a class="jxr_linenumber" name="447" href="#447">447</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="448" href="#448">448</a>     {
+<a class="jxr_linenumber" name="449" href="#449">449</a>       updateNotificationTime(System.nanoTime());
+<a class="jxr_linenumber" name="450" href="#450">450</a>       <strong class="jxr_keyword">if</strong> (parentPath != <strong class="jxr_keyword">null</strong> &amp;&amp; parentPath.startsWith(_path))
+<a class="jxr_linenumber" name="451" href="#451">451</a>       {
+<a class="jxr_linenumber" name="452" href="#452">452</a>         <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
+<a class="jxr_linenumber" name="453" href="#453">453</a>         
+<a class="jxr_linenumber" name="454" href="#454">454</a>         <strong class="jxr_keyword">if</strong> (currentChilds == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="455" href="#455">455</a>           <em class="jxr_comment">// parentPath has been removed</em>
+<a class="jxr_linenumber" name="456" href="#456">456</a>           <strong class="jxr_keyword">if</strong> (parentPath.equals(_path)) {
+<a class="jxr_linenumber" name="457" href="#457">457</a>             <em class="jxr_comment">// _path has been removed, remove this listener</em>
+<a class="jxr_linenumber" name="458" href="#458">458</a>             _manager.removeListener(_propertyKey, _listener);
+<a class="jxr_linenumber" name="459" href="#459">459</a>           }
+<a class="jxr_linenumber" name="460" href="#460">460</a>           changeContext.setType(NotificationContext.Type.FINALIZE);
+<a class="jxr_linenumber" name="461" href="#461">461</a>         } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="462" href="#462">462</a>           changeContext.setType(NotificationContext.Type.CALLBACK);
+<a class="jxr_linenumber" name="463" href="#463">463</a>         }
+<a class="jxr_linenumber" name="464" href="#464">464</a>         invoke(changeContext);
+<a class="jxr_linenumber" name="465" href="#465">465</a>       }
+<a class="jxr_linenumber" name="466" href="#466">466</a>     }
+<a class="jxr_linenumber" name="467" href="#467">467</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="468" href="#468">468</a>     {
+<a class="jxr_linenumber" name="469" href="#469">469</a>       String msg = <span class="jxr_string">"exception in handling child-change. instance: "</span> + _manager.getInstanceName() 
+<a class="jxr_linenumber" name="470" href="#470">470</a>     		  + <span class="jxr_string">", parentPath: "</span> + parentPath + <span class="jxr_string">", listener: "</span> + _listener;
+<a class="jxr_linenumber" name="471" href="#471">471</a>       ZKExceptionHandler.getInstance().handle(msg, e);
+<a class="jxr_linenumber" name="472" href="#472">472</a>     }
+<a class="jxr_linenumber" name="473" href="#473">473</a>   }
+<a class="jxr_linenumber" name="474" href="#474">474</a> 
+<a class="jxr_linenumber" name="475" href="#475">475</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="476" href="#476">476</a> <em class="jxr_javadoccomment">   * Invoke the listener for the last time so that the listener could clean up resources</em>
+<a class="jxr_linenumber" name="477" href="#477">477</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="478" href="#478">478</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="479" href="#479">479</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> reset()
+<a class="jxr_linenumber" name="480" href="#480">480</a>   {
+<a class="jxr_linenumber" name="481" href="#481">481</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="482" href="#482">482</a>     {
+<a class="jxr_linenumber" name="483" href="#483">483</a>       <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a> changeContext = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/NotificationContext.html">NotificationContext</a>(_manager);
+<a class="jxr_linenumber" name="484" href="#484">484</a>       changeContext.setType(NotificationContext.Type.FINALIZE);
+<a class="jxr_linenumber" name="485" href="#485">485</a>       invoke(changeContext);
+<a class="jxr_linenumber" name="486" href="#486">486</a>     }
+<a class="jxr_linenumber" name="487" href="#487">487</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="488" href="#488">488</a>     {
+<a class="jxr_linenumber" name="489" href="#489">489</a>       String msg = <span class="jxr_string">"Exception while resetting the listener:"</span>+_listener;
+<a class="jxr_linenumber" name="490" href="#490">490</a>       ZKExceptionHandler.getInstance().handle(msg, e);

[... 25 lines stripped ...]


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