Class JoinDocFreqValueSource
- java.lang.Object
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- org.apache.lucene.queries.function.ValueSource
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- org.apache.lucene.queries.function.valuesource.FieldCacheSource
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- org.apache.lucene.queries.function.valuesource.JoinDocFreqValueSource
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public class JoinDocFreqValueSource extends FieldCacheSource
Use a field value and find the Document Frequency within another field.- Since:
- solr 4.0
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
NAME
protected java.lang.String
qfield
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Fields inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
field
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Constructor Summary
Constructors Constructor Description JoinDocFreqValueSource(java.lang.String field, java.lang.String qfield)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
description()
description of field, used in explain()boolean
equals(java.lang.Object o)
FunctionValues
getValues(java.util.Map context, LeafReaderContext readerContext)
Gets the values for this reader and the context that was previously passed to createWeight().int
hashCode()
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Methods inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
getField
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Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, createWeight, fromDoubleValuesSource, getSortField, newContext, toString
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Field Detail
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NAME
public static final java.lang.String NAME
- See Also:
- Constant Field Values
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qfield
protected final java.lang.String qfield
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Method Detail
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description
public java.lang.String description()
Description copied from class:ValueSource
description of field, used in explain()- Overrides:
description
in classFieldCacheSource
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getValues
public FunctionValues getValues(java.util.Map context, LeafReaderContext readerContext) throws java.io.IOException
Description 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:
java.io.IOException
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equals
public boolean equals(java.lang.Object o)
- Overrides:
equals
in classFieldCacheSource
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hashCode
public int hashCode()
- Overrides:
hashCode
in classFieldCacheSource
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