Class IntFieldSource
- 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.IntFieldSource
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- Direct Known Subclasses:
MultiValuedIntFieldSource
public class IntFieldSource extends FieldCacheSource
Obtains int field values fromLeafReader.getNumericDocValues(java.lang.String)
and makes those values available as other numeric types, casting as needed.
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Field Summary
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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 IntFieldSource(String field)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description String
description()
description of field, used in explain()boolean
equals(Object o)
protected NumericDocValues
getNumericDocValues(Map context, LeafReaderContext readerContext)
SortField
getSortField(boolean reverse)
EXPERIMENTAL: This method is subject to change.FunctionValues
getValues(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, newContext, toString
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Constructor Detail
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IntFieldSource
public IntFieldSource(String field)
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Method Detail
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description
public String description()
Description copied from class:ValueSource
description of field, used in explain()- Overrides:
description
in classFieldCacheSource
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getSortField
public SortField getSortField(boolean reverse)
Description copied from class:ValueSource
EXPERIMENTAL: This method is subject to change.Get the SortField for this ValueSource. Uses the
ValueSource.getValues(java.util.Map, org.apache.lucene.index.LeafReaderContext)
to populate the SortField.- Overrides:
getSortField
in classValueSource
- Parameters:
reverse
- true if this is a reverse sort.- Returns:
- The
SortField
for the ValueSource
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getValues
public FunctionValues getValues(Map context, LeafReaderContext readerContext) throws 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:
IOException
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getNumericDocValues
protected NumericDocValues getNumericDocValues(Map context, LeafReaderContext readerContext) throws IOException
- Throws:
IOException
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equals
public boolean equals(Object o)
- Overrides:
equals
in classFieldCacheSource
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hashCode
public int hashCode()
- Overrides:
hashCode
in classFieldCacheSource
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