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https://issues.apache.org/jira/browse/SOLR-540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589384#action_12589384
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Lars Kotthoff commented on SOLR-540:
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Erik, I agree. This issue has been around for almost a year now though. The
general case is much harder to implement and get right than such a apecific
one; therefore it might be better to start by implementing it for something not
too difficult (like highlighting) and see what people think of it. First to see
which features are really needed, but also to see whether it's the right
approach at all.
Chris, good point. I didn't think about this because in the schema I'm using
with the patched Solr instance all fields happen to be stored. I've changed the
patch to return only stored fields. Now, this is arguably not the right place
for generic give-me-all-stored-fields code and the implementation is
inefficient. My knowledge of the Solr code base isn't good enough though to
figure out the right place for this code -- it needs to talk to both Solr and
Lucene code to get all static and dynamic fields. Should this maybe go into the
SolrCore code? It could maintain a list of stored fields which is assembled on
startup and updated on <commit/> instead of reassembling it for every query.
Note that the latest version of the patch could also easily be tweaked to allow
arbitrary wildcard specifications of the fields to highlight (e.g.
hl.fl=text_*).
> Add support for hl.fl=*
> -----------------------
>
> Key: SOLR-540
> URL: https://issues.apache.org/jira/browse/SOLR-540
> Project: Solr
> Issue Type: New Feature
> Components: highlighter
> Affects Versions: 1.3
> Environment: Tomcat 5.5
> Reporter: Lars Kotthoff
> Priority: Minor
> Attachments: solr-highlight-all.patch, solr-highlight-all.patch
>
>
> Adds support for the star value for the hl.fl parameter, i.e. highlighting
> will be done on all fields (static and dynamic). Particularly useful in
> conjunction with hl.requireFieldMatch=true, this way one can specify
> "generic" highlighting parameters independent of the query/searched fields.
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