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https://issues.apache.org/jira/browse/SOLR-1400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751771#action_12751771
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Yonik Seeley commented on SOLR-1400:
------------------------------------
+1
Although the logic could probably be simplified such that a zero-length test
wouldn't even be needed, this is the simplest fix.
> Document with empty or white-space only string causes exception with
> TrimFilter
> -------------------------------------------------------------------------------
>
> Key: SOLR-1400
> URL: https://issues.apache.org/jira/browse/SOLR-1400
> Project: Solr
> Issue Type: Bug
> Components: update
> Affects Versions: 1.4
> Reporter: Peter Wolanin
> Assignee: Grant Ingersoll
> Fix For: 1.4
>
> Attachments: SOLR-1400.patch, trim-example.xml
>
>
> Observed with Solr trunk. Posting any empty or whitespace-only string to a
> field using the {code}<filter class="solr.TrimFilterFactory" />{code}
> Causes a java exception:
> {code}
> Sep 1, 2009 4:58:09 PM org.apache.solr.common.SolrException log
> SEVERE: java.lang.ArrayIndexOutOfBoundsException: -1
> at
> org.apache.solr.analysis.TrimFilter.incrementToken(TrimFilter.java:63)
> at
> org.apache.solr.analysis.PatternReplaceFilter.incrementToken(PatternReplaceFilter.java:74)
> at
> org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:138)
> at
> org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:244)
> at
> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:772)
> at
> org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:755)
> at
> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:2611)
> at
> org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:2583)
> at
> org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:241)
> at
> org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:61)
> at org.apache.solr.handler.XMLLoader.processUpdate(XMLLoader.java:140)
> at org.apache.solr.handler.XMLLoader.load(XMLLoader.java:69)
> at
> org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:54)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1299)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241)
> {code}
> Trim of an empty or WS-only string should not fail.
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