allow user to specify the deltaImportQuery instead of DIH building it
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Key: SOLR-811
URL: https://issues.apache.org/jira/browse/SOLR-811
Project: Solr
Issue Type: Improvement
Components: contrib - DataImportHandler
Affects Versions: 1.3
Reporter: Noble Paul
Fix For: 1.4
currently DIH constructs the query for delta-import by mixing the query and pk
and delta row ids
This leads to creation of wrong queries if SqlEntityProcessor cannot parse the
query properly.
solution add a new attribute 'deltaImportQuery' attribute which can use
dataimporter.delta.<pkfield-name> in the template and construct a full query
If this is absent it will continue to work the old way
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