Class SortedSetFieldSource
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.lucene.queries.function.valuesource.FieldCacheSource
org.apache.lucene.queries.function.valuesource.SortedSetFieldSource
Retrieves
FunctionValues
instances for multi-valued string based fields.
A SortedSetDocValues contains multiple values for a field, so this technique "selects" a value as the representative value for the document.
- See Also:
-
Field Summary
Fields inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
field
-
Constructor Summary
ConstructorDescriptionSortedSetFieldSource
(String field) SortedSetFieldSource
(String field, SortedSetSelector.Type selector) -
Method Summary
Modifier and TypeMethodDescriptiondescription of field, used in explain()boolean
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()
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
-
Field Details
-
selector
-
-
Constructor Details
-
SortedSetFieldSource
-
SortedSetFieldSource
-
-
Method Details
-
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
-
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
-
description
Description copied from class:ValueSource
description of field, used in explain()- Overrides:
description
in classFieldCacheSource
-
hashCode
public int hashCode()- Overrides:
hashCode
in classFieldCacheSource
-
equals
- Overrides:
equals
in classFieldCacheSource
-