[UIMA-3096] A LuCas extension that allows ro index the Lucene documents created by LuCas into a Solr server.

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.4.0Addons
• Component/s: Sandbox-Lucas
• Assignee: Unassigned
• Reporter: Erik Faessler
• Created: 22/Jul/13 12:53
• Updated: 23/Jul/13 07:47

Description

Add a UIMA component extending LuceneDocumentAE that converts the Lucene document instances created by LuCas into Solr's PreAnalyzed field format (http://wiki.apache.org/solr/PreAnalyzedField). The converted documents are then sent in batches to Solr using the SolrJ API.
On the Solr side, PreAnalyzedUpdateProcessorFactory (http://lucene.apache.org/solr/4_3_1/solr-core/org/apache/solr/update/processor/FieldMutatingUpdateProcessorFactory.html) can be used to restrict the pre-analyzed field values to an existing Solr schema. In case that the LuCas mapping file matches the Solr schema, it is easy as this:
In solrconfig.xml, add this updateRequestProcessorChain:

<updateRequestProcessorChain name="pre-analyzed-json">
<processor class="solr.PreAnalyzedUpdateProcessorFactory">
<str name="fieldRegex">.*</str>
<str name="parser">json</str>
</processor>
<processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>

Then, add this chain to the default update handler:

<requestHandler name="/update" class="solr.UpdateRequestHandler">
<lst name="defaults">
<str name="update.chain">pre-analyzed-json</str>
</lst>
</requestHandler>