Package org.apache.lucene.queries.function.valuesource

Class QueryValueSource

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.queries.function.valuesource.QueryValueSource

public class QueryValueSource
extends ValueSource

QueryValueSource returns the relevance score of the query

Constructor Summary

Constructors

Constructor	Description
QueryValueSource(Query q, float defVal)

Method Summary

Modifier and Type	Method	Description
void	createWeight(Map<Object,Object> 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)
float	getDefaultValue()
Query	getQuery()
FunctionValues	getValues(Map<Object,Object> fcontext, 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

asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, newContext, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryValueSource

public QueryValueSource(Query q,
                        float defVal)

Method Detail

getQuery

public Query getQuery()

getDefaultValue

public float getDefaultValue()

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Specified by:

description in class ValueSource

getValues

public FunctionValues getValues(Map<Object,Object> fcontext,
                                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 class ValueSource

Throws:

IOException

hashCode

public int hashCode()

Specified by:

hashCode in class ValueSource

equals

public boolean equals(Object o)

Specified by:

equals in class ValueSource

createWeight

public void createWeight(Map<Object,Object> context,
                         IndexSearcher searcher)
                  throws IOException

Description copied from class: ValueSource

Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context. The context object will be passed to getValues() where this info can be retrieved.

Overrides:

createWeight in class ValueSource

Throws:

IOException