[jira] Commented: (SOLR-42) Highlighting problems with HTMLStripWhitespaceTokenizerFactory

["Stuart Sierra (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-42?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542184 ] 

Stuart Sierra commented on SOLR-42:
-----------------------------------

Another workaround is simply to strip HTML tags and entities before sending the document to Solr.  This gives correct highlights.  But if you want to retrieve the original HTML document you'll need to stash it somewhere else.

> 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
>
> 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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