public class NormValueSource extends ValueSource
Note that the configured Similarity for the field must be
a subclass of TFIDFSimilarity
and the contribution of
the TF needs to be 1 when the freq is 1 and the contribution
of the IDF needs to be 1 when docFreq == docCount == 1.
Constructor and Description |
---|
NormValueSource(String field) |
Modifier and Type | Method and Description |
---|---|
void |
createWeight(Map context,
IndexSearcher searcher)
Implementations should propagate createWeight to sub-ValueSources which can optionally store
weight info in the context.
|
String |
description()
description of field, used in explain()
|
boolean |
equals(Object o) |
FunctionValues |
getValues(Map context,
LeafReaderContext readerContext)
Gets the values for this reader and the context that was previously
passed to createWeight().
|
int |
hashCode() |
String |
name() |
asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, newContext, toString
protected final String field
public NormValueSource(String field)
public String name()
public String description()
ValueSource
description
in class ValueSource
public void createWeight(Map context, IndexSearcher searcher) throws IOException
ValueSource
createWeight
in class ValueSource
IOException
public FunctionValues getValues(Map context, LeafReaderContext readerContext) throws IOException
ValueSource
getValues
in class ValueSource
IOException
public boolean equals(Object o)
equals
in class ValueSource
public int hashCode()
hashCode
in class ValueSource
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