Class DualFloatFunction
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.DualFloatFunction
- Direct Known Subclasses:
DivFloatFunction,PowFloatFunction
Abstract
ValueSource implementation which wraps two ValueSources and applies an
extendible float function to their values.-
Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoidcreateWeight(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()booleanprotected abstract floatfunc(int doc, FunctionValues aVals, FunctionValues bVals) getValues(Map<Object, Object> context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight().inthashCode()protected abstract Stringname()Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, newContext, toString
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Field Details
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a
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b
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Constructor Details
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DualFloatFunction
- Parameters:
a- the base.b- the exponent.
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Method Details
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name
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func
protected abstract float func(int doc, FunctionValues aVals, FunctionValues bVals) throws IOException - Throws:
IOException
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description
Description copied from class:ValueSourcedescription of field, used in explain()- Specified by:
descriptionin classValueSource
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getValues
public FunctionValues getValues(Map<Object, Object> context, LeafReaderContext readerContext) throws IOExceptionDescription copied from class:ValueSourceGets 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:
getValuesin classValueSource- Throws:
IOException
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createWeight
Description copied from class:ValueSourceImplementations 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:
createWeightin classValueSource- Throws:
IOException
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hashCode
public int hashCode()- Specified by:
hashCodein classValueSource
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equals
- Specified by:
equalsin classValueSource
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