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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-1725) Script based UpdateRequestProcessorFactory
Date Mon, 06 Aug 2012 21:53:02 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13429468#comment-13429468
] 

Hoss Man commented on SOLR-1725:
--------------------------------

bq. Java 6 spec requires a JavaScript engine to be shipped with JDK

i didn't know that ... i couldn't find anything in the docs that suggested certain engines
were mandatory, hence the assuptions i nthe test (the maven tests just indicated that those
assumptions ere broken)

bq. I strongly -1 shipping with additional scripting engines
i didn't see anyone suggesting that ... no argument there.

bq. We should maybe only fix Solr's classloader to be set as context classloader, too.

that sounds like an ortoginal issue ... great idea, didn't know it was possible, please go
ahead and do it, but let's track it in it's own issue
                
> 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
>            Priority: Critical
>              Labels: UpdateProcessor
>             Fix For: 4.0
>
>         Attachments: SOLR-1725-rev1.patch, SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch,
SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch, SOLR-1725.patch,
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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