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From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1725) Script based UpdateRequestProcessorFactory
Date Sun, 13 Mar 2011 22:03:59 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006284#comment-13006284
] 

David Smiley commented on SOLR-1725:
------------------------------------

This capability is awesome, just as it's DIH equivalent is.  It's been over a year since any
activity here.  As time passes, the case for moving to Java 6 increases.  Short of that, I
don't see a problem with this working like the DIH ScriptTransformer does by using the Java
6 features via reflection.

> Script based UpdateRequestProcessorFactory
> ------------------------------------------
>
>                 Key: SOLR-1725
>                 URL: https://issues.apache.org/jira/browse/SOLR-1725
>             Project: Solr
>          Issue Type: New Feature
>          Components: update
>    Affects Versions: 1.4
>            Reporter: Uri Boness
>         Attachments: SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch,
SOLR-1725.patch
>
>
> A script based UpdateRequestProcessorFactory (Uses JDK6 script engine support). The main
goal of this plugin is to be able to configure/write update processors without the need to
write and package Java code.
> The update request processor factory enables writing update processors in scripts located
in {{solr.solr.home}} directory. The functory accepts one (mandatory) configuration parameter
named {{scripts}} which accepts a comma-separated list of file names. It will look for these
files under the {{conf}} directory in solr home. When multiple scripts are defined, their
execution order is defined by the lexicographical order of the script file name (so {{scriptA.js}}
will be executed before {{scriptB.js}}).
> The script language is resolved based on the script file extension (that is, a *.js files
will be treated as a JavaScript script), therefore an extension is mandatory.
> Each script file is expected to have one or more methods with the same signature as the
methods in the {{UpdateRequestProcessor}} interface. It is *not* required to define all methods,
only those hat are required by the processing logic.
> The following variables are define as global variables for each script:
>  * {{req}} - The SolrQueryRequest
>  * {{rsp}}- The SolrQueryResponse
>  * {{logger}} - A logger that can be used for logging purposes in the script

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