index-extra plugin creates additional fields in the index, based on configurable logic --------------------------------------------------------------------------------------
Key: NUTCH-422 URL: http://issues.apache.org/jira/browse/NUTCH-422 Project: Nutch Issue Type: New Feature Components: indexer Affects Versions: 0.8.1 Environment: All environments Reporter: Alan Tanaman Extract from the Readme file: A. Introduction The index-extra plugin allows you to configure additional fields that you wish to be added to the index, based on one of the following sources: - The parsed text - Meta data fields - Previously created document-to-be-indexed fields - Plain constant string - Java expression combining one or more of the above, and resolving to a string A regex can also be applied to any of the above, allowing fields to be created based on patterns extracted from the source. B. Installation 1) Binaries only: Copy the 'index-extra' folder within index-extra-v1.0-bin-java1.5.zip to NUTCHDIR/build Copy the 'index-extra-conf.xml' file to NUTCHDIR/conf, and configure Enable the plugin by updating the nutch-site.xml file 2) Source code: Always refer to the Nutch wiki for detailed instructions on building Nutch. In short: Copy the 'index-extra' folder within index-extra-v1.0-source.zip to NUTCHDIR/src/plugin Update the build.xml in NUTCHDIR/src/plugin to include plugin Update the NUTCHDIR/default.properties file to include plugin run ant to build Copy the 'index-extra-conf.xml' file to NUTCHDIR/conf, and configure Enable the plugin by updating the nutch-site.xml file C. Known Issues 1) For this plugin to work correctly on any document field, it is necessary to run the other index filters first, so that all basic document fields are generated first. To do this, configure the indexingfilter.order property. (Please see patch NUTCH-421 to enable indexingfilter.order property. If this patch is not applied, the plugin will still work, but will not be able to use document fields created by other index filter plugins.) 2) At this stage, field boost can not be used as Nutch scoring overrides the field boost with its own document-level boost calculation. This occurs at the end of org.apache.nutch.indexer.Indexer's reduce method. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira