Class SingleFunction
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.SingleFunction
- Direct Known Subclasses:
SimpleFloatFunction
A function with a single argument
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Field Summary
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
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
int
hashCode()
protected abstract String
name()
Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, getValues, newContext, toString
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Field Details
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source
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Constructor Details
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SingleFunction
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Method Details
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name
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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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hashCode
public int hashCode()- Specified by:
hashCode
in classValueSource
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equals
- Specified by:
equals
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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