org.apache.lucene.queries.function.valuesource
Class JoinDocFreqValueSource

java.lang.Object
  org.apache.lucene.queries.function.ValueSource
      org.apache.lucene.queries.function.valuesource.FieldCacheSource
          org.apache.lucene.queries.function.valuesource.JoinDocFreqValueSource

public class JoinDocFreqValueSource
extends FieldCacheSource

Use a field value and find the Document Frequency within another field.

Since:

solr 4.0

Field Summary

static String	NAME
protected String	qfield

Fields inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource

cache, field

Constructor Summary

JoinDocFreqValueSource(String field, String qfield)

Method Summary

String	description() description of field, used in explain()
boolean	equals(Object o)
FunctionValues	getValues(Map context, AtomicReaderContext 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, getFieldCache

Methods inherited from class org.apache.lucene.queries.function.ValueSource

createWeight, getSortField, newContext, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

qfield

protected final String qfield

Constructor Detail

JoinDocFreqValueSource

public JoinDocFreqValueSource(String field,
                              String qfield)

Method Detail

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Overrides:

description in class FieldCacheSource

getValues

public FunctionValues getValues(Map context,
                                AtomicReaderContext readerContext)
                         throws IOException

Description copied from class: ValueSource

Gets the values for this reader and the context that was previously passed to createWeight()

Specified by:

getValues in class ValueSource

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class FieldCacheSource

hashCode

public int hashCode()

Overrides:

hashCode in class FieldCacheSource