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Posted to dev@lucene.apache.org by "Tamer Boz (JIRA)" <ji...@apache.org> on 2018/01/12 11:14:00 UTC

[jira] [Commented] (SOLR-4722) Highlighter which generates a list of query term position(s) for each item in a list of documents, or returns null if highlighting is disabled.

    [ https://issues.apache.org/jira/browse/SOLR-4722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16323833#comment-16323833 ] 

Tamer Boz commented on SOLR-4722:
---------------------------------

I want to use the PositionsSolrHighlighter with solr version 6.6.2. I managed to compile PositionsSolrHighlighter.java in version 6.6.2  without errors.
After that I put the snippet below in in Solrconfig.xml, als I used these settings termVectors="true" termPositions="true" termOffsets="true"
Unfortunate I do not get any results about each term's text.
Can someone explain all the steps that are necessary to get results?

<searchComponent class="solr.HighlightComponent" name="highlight">
<highlighting class="org.apache.solr.highlight.PositionsSolrHighlighter"> 
</highlighting>
</searchComponent>

> Highlighter which generates a list of query term position(s) for each item in a list of documents, or returns null if highlighting is disabled.
> -----------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-4722
>                 URL: https://issues.apache.org/jira/browse/SOLR-4722
>             Project: Solr
>          Issue Type: New Feature
>          Components: highlighter
>    Affects Versions: 4.3, 6.0
>            Reporter: Tricia Jenkins
>            Priority: Minor
>         Attachments: PositionsSolrHighlighter.java, SOLR-4722.patch, SOLR-4722.patch, solr-positionshighlighter.jar
>
>
> As an alternative to returning snippets, this highlighter provides the (term) position for query matches.  One usecase for this is to reconcile the term position from the Solr index with 'word' coordinates provided by an OCR process.  In this way we are able to 'highlight' an image, like a page from a book or an article from a newspaper, in the locations that match the user's query.
> This is based on the FastVectorHighlighter and requires that termVectors, termOffsets and termPositions be stored.



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