Script based UpdateRequestProcessorFactory
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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
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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