Andrey Kudryavtsev created SOLR-5388:
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Summary: Combine def function with "multi" functions (max, min,
sum, product)
Key: SOLR-5388
URL: https://issues.apache.org/jira/browse/SOLR-5388
Project: Solr
Issue Type: New Feature
Reporter: Andrey Kudryavtsev
Priority: Minor
Fix For: 5.0
Ability for expressions like _def(min(field1,..,fieldN), defValue)_ return
_defValue_ if document doesn't have value for any of this fields.
Implement exists(int doc) method for FunctionValues created in
MultiFloatFunction. Extract method to get ability other MultiFloatFunction
implementation to override it.
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