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https://issues.apache.org/jira/browse/SOLR-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12770811#action_12770811
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Shalin Shekhar Mangar commented on SOLR-1516:
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Chris, it is not about whether we want to encourage people to write custom
QueryResponseWriters or not. We had an agreement on where to draw the line for
accepting new issues. Had this issue been opened a few weeks earlier we would
have pushed it into 1.4
We can work on this as soon as 1.4 is out. You can either use your internal
patched version or 1.5 trunk once this patch is committed.
> DocumentList and Document QueryResponseWriter
> ---------------------------------------------
>
> Key: SOLR-1516
> URL: https://issues.apache.org/jira/browse/SOLR-1516
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.3
> Environment: My MacBook Pro laptop.
> Reporter: Chris A. Mattmann
> Priority: Minor
> Fix For: 1.5
>
> Attachments: SOLR-1516.Mattmann.101809.patch.txt
>
>
> I tried to implement a custom QueryResponseWriter the other day and was
> amazed at the level of unmarshalling and weeding through objects that was
> necessary just to format the output o.a.l.Document list. As a user, I wanted
> to be able to implement either 2 functions:
> * process a document at a time, and format it (for speed/efficiency)
> * process all the documents at once, and format them (in case an aggregate
> calculation is necessary for outputting)
> So, I've decided to contribute 2 simple classes that I think are sufficiently
> generic and reusable. The first is o.a.s.request.DocumentResponseWriter -- it
> handles the first bullet above. The second is
> o.a.s.request.DocumentListResponseWriter. Both are abstract base classes and
> require the user to implement either an #emitDoc function (in the case of
> bullet 1), or an #emitDocList function (in the case of bullet 2). Both
> classes provide an #emitHeader and #emitFooter function set that handles
> formatting and output before the Document list is processed.
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