DocumentList and Document QueryResponseWriter
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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: 1.4
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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