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https://issues.apache.org/jira/browse/NUTCH-1406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13398367#comment-13398367
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Kristof commented on NUTCH-1406:
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I found a way to, but it involved replacing MetadataIndexer.java completely.
The date conversion works. I tested it with the seed url stated in the
description. Patch against trunk is attached.
> Metatags-index/-parse plugin: conversion to Solr date format and prevents
> parsing/indexing of empty tags
> --------------------------------------------------------------------------------------------------------
>
> Key: NUTCH-1406
> URL: https://issues.apache.org/jira/browse/NUTCH-1406
> Project: Nutch
> Issue Type: Improvement
> Components: indexer, parser
> Reporter: Kristof
> Priority: Minor
> Labels: conversion, date
> Attachments: index-metadata-plugin.patch, index-metatags.jar
>
>
> This improvement to the index-metatags plugin (sometimes also refered to
> parse-metatags plugin) allows for conversion of selected fields to the Solr
> date format and prevents parsing/indexing of metatags that do not contain any
> content.
> In order to convert the values of selected metatags to Solr date format, you
> must specify in nutch-site.xml. The example used is an extended Dublin Core
> element dcterms.modified with the seed url http://www.cic.gc.ca/.
> dcterms.modified must also be defined in the metatags.names property.
> {code}
> <property>
> <name>metatags.convert</name>
> <value>dcterms.modified</value>
> <description>For plugin index-metadata: Indicate here the name of the
> html meta tag that should be converted to Solr date format.
> </description>
> </property>
> {code}
> I read that SimpleDateFormat format is not a robust solution, so this
> improvement might have some problems.
> So far it worked well for me. Below more details about the changes.
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