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From "Shalin Shekhar Mangar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-6365) specify appends, defaults, invariants outside of the component
Date Thu, 18 Sep 2014 09:47:35 GMT

    [ https://issues.apache.org/jira/browse/SOLR-6365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14138731#comment-14138731
] 

Shalin Shekhar Mangar commented on SOLR-6365:
---------------------------------------------

Sorry for being late with feedback but I really think this shouldn't be called "paramSet".
This is basically about refactoring the initial configuration for request handlers out of
their section. In future when do have real query/param templates then this name will come
back to bite us. We should call it what it is such as initArgs or something similar.

> specify  appends, defaults, invariants outside of the component
> ---------------------------------------------------------------
>
>                 Key: SOLR-6365
>                 URL: https://issues.apache.org/jira/browse/SOLR-6365
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Noble Paul
>            Assignee: Noble Paul
>             Fix For: 4.11, 5.0
>
>         Attachments: SOLR-6365.patch
>
>
> The components are configured in solrconfig.xml mostly for specifying these extra parameters.
If we separate these out, we can avoid specifying the components altogether and make solrconfig
much simpler. Eventually we want users to see all functions as paths instead of components
and control these params from outside , through an API and persisted in ZK
> objectives :
> * define standard components implicitly and let users override some params only
> * reuse standard params across components
> * define multiple param sets and mix and match these params at request time
> example
> {code:xml}
> <!-- use json for all paths and _txt as the default search field-->
> <paramSet name="global" path="/**">
>   <lst name="defaults">
>      <str name="wt">json</str>
>      <str name="df">_txt</str>
>   </lst>
> </paramSet>
> {code}
> other examples
> {code:xml}
> <paramSet name="a" path="/dump3,/root/*,/root1/**">
>     <lst name="defaults">
>       <str name="a">A</str>
>     </lst>
>     <lst name="invariants">
>       <str name="b">B</str>
>     </lst>
>     <lst name="appends">
>       <str name="c">C</str>
>     </lst>
>   </paramSet>
>   <requestHandler name="/dump3" class="DumpRequestHandler"/>
>   <requestHandler name="/dump4" class="DumpRequestHandler"/>
>   <requestHandler name="/root/dump5" class="DumpRequestHandler"/>
>   <requestHandler name="/root1/anotherlevel/dump6" class="DumpRequestHandler"/>
>   <requestHandler name="/dump1" class="DumpRequestHandler" paramSet="a"/>
>   <requestHandler name="/dump2" class="DumpRequestHandler" paramSet="a">
>     <lst name="defaults">
>       <str name="a">A1</str>
>     </lst>
>     <lst name="invariants">
>       <str name="b">B1</str>
>     </lst>
>     <lst name="appends">
>       <str name="c">C1</str>
>     </lst>
>   </requestHandler>
> {code}
>  



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