Allow multiple field aliases in ExtendedDisMaxQParser
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Key: SOLR-2643
URL: https://issues.apache.org/jira/browse/SOLR-2643
Project: Solr
Issue Type: Improvement
Components: search
Affects Versions: 4.0
Reporter: Jamie Johnson
The original DisMaxQParser seems to have support for handling multiple aliases
so someone could do query rewrite on more than just the default field. If the
ExtendedDisMaxQParser supported this and exposed this capability we'd be able
to build more powerful rewrite capabilities such that could reduce the size of
an index. For instance say we have a scenario where we have 3 fields
first_name, last_name and name. In this situation we don't completely control
the input, we may have first_name and last_name or just name. In this case
given 2 documents as follows:
Doc 1
first_name: John
last_name: Doe
Doc 2
name: Jane Doe
if the user did a query on name:Doe we would be able to rewrite the query to
return both documents such that the query would be name:Doe OR first_name:Doe
OR last_name:Doe
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