Class ComparisonBoolFunction
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.BoolFunction
org.apache.lucene.queries.function.valuesource.ComparisonBoolFunction
Base class for comparison operators useful within an "if"/conditional.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionabstract boolean
compare
(int doc, FunctionValues lhs, FunctionValues rhs) Perform the comparison, returning true or falsevoid
createWeight
(Map<Object, Object> context, IndexSearcher searcher) Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context.description of field, used in explain()boolean
getValues
(Map<Object, Object> context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight().int
hashCode()
name()
Uniquely identify the operation (ie "gt", "lt" "gte", etc)Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, newContext, toString
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Constructor Details
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ComparisonBoolFunction
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Method Details
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compare
Perform the comparison, returning true or false- Throws:
IOException
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name
Uniquely identify the operation (ie "gt", "lt" "gte", etc) -
getValues
public FunctionValues getValues(Map<Object, Object> context, LeafReaderContext readerContext) throws IOExceptionDescription copied from class:ValueSource
Gets the values for this reader and the context that was previously passed to createWeight(). The values must be consumed in a forward docID manner, and you must call this method again to iterate through the values again.- Specified by:
getValues
in classValueSource
- Throws:
IOException
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equals
- Specified by:
equals
in classValueSource
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hashCode
public int hashCode()- Specified by:
hashCode
in classValueSource
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description
Description copied from class:ValueSource
description of field, used in explain()- Specified by:
description
in classValueSource
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createWeight
Description copied from class:ValueSource
Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context. The context object will be passed to getValues() where this info can be retrieved.- Overrides:
createWeight
in classValueSource
- Throws:
IOException
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