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From "Peter Wolanin (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (LUCENE-1500) Highlighter throws StringIndexOutOfBoundsException
Date Tue, 24 Feb 2009 22:16:02 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12676426#action_12676426
] 

pwolanin edited comment on LUCENE-1500 at 2/24/09 2:15 PM:
----------------------------------------------------------------

Actually, looking at the Lucene source and the trace:

{code}
java.lang.StringIndexOutOfBoundsException: String index out of range: 2822
	at java.lang.String.substring(String.java:1765)
	at org.apache.lucene.search.highlight.Highlighter.getBestTextFragments(Highlighter.java:274)
	at org.apache.solr.highlight.DefaultSolrHighlighter.doHighlighting(DefaultSolrHighlighter.java:313)
	at org.apache.solr.handler.component.HighlightComponent.process(HighlightComponent.java:84)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
       ...
{code}

I see now that getBestTextFragments() takes in a token stream - and each token in this steam
already has start/end positions set.  So, this patch would mitigate the exception, but looks
like the real bug is in Solr, or perhaps elsewhere in Lucene where the token stream is constructed.

      was (Author: pwolanin):
    Actually, looking at the Lucene source and the trace:

{code}
java.lang.StringIndexOutOfBoundsException: String index out of range: 2822
	at java.lang.String.substring(String.java:1765)
	at org.apache.lucene.search.highlight.Highlighter.getBestTextFragments(Highlighter.java:274)
	at org.apache.solr.highlight.DefaultSolrHighlighter.doHighlighting(DefaultSolrHighlighter.java:313)
	at org.apache.solr.handler.component.HighlightComponent.process(HighlightComponent.java:84)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
       ...
{code}

I see now that getBestTextFragments() takes in a token stream - and each token in this steam
already has start/end positions set.  So, this patch would mitigate the exception, but looks
liek the real bug is in Solr.
  
> Highlighter throws StringIndexOutOfBoundsException
> --------------------------------------------------
>
>                 Key: LUCENE-1500
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1500
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/highlighter
>    Affects Versions: 2.4
>         Environment: Found this running the example code in Solr (latest version).
>            Reporter: David Bowen
>         Attachments: patch.txt
>
>
> Using the canonical Solr example (ant run-example) I added this document (using exampledocs/post.sh):
> <add><doc>
>   <field name="id">Test for Highlighting StringIndexOutOfBoundsExcdption</field>
>   <field name="name">Some Name</field>
>   <field name="manu">Acme, Inc.</field>
>   <field name="features">Description of the features, mentioning various things</field>
>   <field name="features">Features also is multivalued</field>
>   <field name="popularity">6</field>
>   <field name="inStock">true</field>
> </doc></add>
> and then the URL http://localhost:8983/solr/select/?q=features&hl=true&hl.fl=features
caused the exception.
> I have a patch.  I don't know if it is completely correct, but it avoids this exception.

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