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From p..@apache.org
Subject svn commit: r492035 - /incubator/openjpa/trunk/openjpa-project/src/doc/manual/ref_guide_dbsetup.xml
Date Wed, 03 Jan 2007 03:09:53 GMT
Author: pcl
Date: Tue Jan  2 19:09:52 2007
New Revision: 492035

URL: http://svn.apache.org/viewvc?view=rev&rev=492035
Log:
some docs about MySQL optimization

Modified:
    incubator/openjpa/trunk/openjpa-project/src/doc/manual/ref_guide_dbsetup.xml

Modified: incubator/openjpa/trunk/openjpa-project/src/doc/manual/ref_guide_dbsetup.xml
URL: http://svn.apache.org/viewvc/incubator/openjpa/trunk/openjpa-project/src/doc/manual/ref_guide_dbsetup.xml?view=diff&rev=492035&r1=492034&r2=492035
==============================================================================
--- incubator/openjpa/trunk/openjpa-project/src/doc/manual/ref_guide_dbsetup.xml (original)
+++ incubator/openjpa/trunk/openjpa-project/src/doc/manual/ref_guide_dbsetup.xml Tue Jan 
2 19:09:52 2007
@@ -2447,6 +2447,27 @@
 false</literal>.
                     </para>
                 </listitem>
+                <listitem id="MySQLDictionary.OptimizeMultiTableDeletes">
+                    <para>
+                    <indexterm>
+                        <primary>
+                            MySQL
+                        </primary>
+                        <secondary>
+                            OptimizeMultiTableDeletes
+                        </secondary>
+                    </indexterm>
+<literal>OptimizeMultiTableDeletes</literal>: MySQL as of version 4.0.0
+supports multiple tables in <literal>DELETE</literal> statements. When
+this option is set, OpenJPA will use that syntax when doing bulk deletes
+from multiple tables. This can happen when the
+<literal>deleteTableContents</literal> <literal>SchemaTool</literal>
+action is used. (See <xref linkend="ref_guide_schema_schematool"/> for
+more info about <literal>deleteTableContents</literal>.) Defaults to
+<literal>false</literal>, since the statement may fail if using InnoDB
+tables and delete constraints.
+                    </para>
+                </listitem>
             </itemizedlist>
         </section>
         <section id="ref_guide_dbsetup_dbsupport_oracle">



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