Class LongFieldSource
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.FieldCacheSource
org.apache.lucene.queries.function.valuesource.LongFieldSource
- Direct Known Subclasses:
MultiValuedLongFieldSource
Obtains long field values from
LeafReader.getNumericDocValues(java.lang.String)
and
makes those values available as other numeric types, casting as needed.-
Field Summary
Fields inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
field
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptiondescription of field, used in explain()boolean
long
externalToLong
(String extVal) protected NumericDocValues
getNumericDocValues
(Map<Object, Object> context, LeafReaderContext readerContext) getSortField
(boolean reverse) EXPERIMENTAL: This method is subject to change.getValues
(Map<Object, Object> context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight().int
hashCode()
longToObject
(long val) longToString
(long val) protected MutableValueLong
Methods inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
getField
Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, createWeight, fromDoubleValuesSource, newContext, toString
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Constructor Details
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LongFieldSource
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Method Details
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description
Description copied from class:ValueSource
description of field, used in explain()- Overrides:
description
in classFieldCacheSource
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externalToLong
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longToObject
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longToString
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getSortField
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<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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getNumericDocValues
protected NumericDocValues getNumericDocValues(Map<Object, Object> context, LeafReaderContext readerContext) throws IOException- Throws:
IOException
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newMutableValueLong
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equals
- Overrides:
equals
in classFieldCacheSource
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hashCode
public int hashCode()- Overrides:
hashCode
in classFieldCacheSource
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