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Posted to dev@lucene.apache.org by "Grant Ingersoll (Assigned) (JIRA)" <ji...@apache.org> on 2011/12/06 16:57:40 UTC
[jira] [Assigned] (SOLR-42) Highlighting problems with
HTMLStripWhitespaceTokenizerFactory
[ https://issues.apache.org/jira/browse/SOLR-42?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Grant Ingersoll reassigned SOLR-42:
-----------------------------------
Assignee: (was: Grant Ingersoll)
> Highlighting problems with HTMLStripWhitespaceTokenizerFactory
> --------------------------------------------------------------
>
> Key: SOLR-42
> URL: https://issues.apache.org/jira/browse/SOLR-42
> Project: Solr
> Issue Type: Bug
> Components: highlighter
> Reporter: Andrew May
> Priority: Minor
> Attachments: HTMLStripReaderTest.java, HtmlStripReaderTestXmlProcessing.patch, HtmlStripReaderTestXmlProcessing.patch, SOLR-42.patch, SOLR-42.patch, SOLR-42.patch, SOLR-42.patch, TokenPrinter.java, htmlStripReaderTest.html
>
>
> Indexing content that contains HTML markup, causes problems with highlighting if the HTMLStripWhitespaceTokenizerFactory is used (to prevent the tag names from being searchable).
> Example title field:
> <SUP>40</SUP>Ar/<SUP>39</SUP>Ar laserprobe dating of mylonitic fabrics in a polyorogenic terrane of NW Iberia
> Searching for title:fabrics with highlighting on, the highlighted version has the <em> tags in the wrong place - 22 characters to the left of where they should be (i.e. the sum of the lengths of the tags).
> Response from Yonik on the solr-user mailing-list:
> HTMLStripWhitespaceTokenizerFactory works in two phases...
> HTMLStripReader removes the HTML and passes the result to
> WhitespaceTokenizer... at that point, Tokens are generated, but the
> offsets will correspond to the text after HTML removal, not before.
> I did it this way so that HTMLStripReader could go before any
> tokenizer (like StandardTokenizer).
> Can you open a JIRA bug for this? The fix would be a special version
> of HTMLStripReader integrated with a WhitespaceTokenizer to keep
> offsets correct.
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