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

Class MultiFunction

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.queries.function.valuesource.MultiFunction

Direct Known Subclasses:

DefFunction

public abstract class MultiFunction
extends ValueSource

Abstract parent class for ValueSource implementations that wrap multiple ValueSources and apply their own logic.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	MultiFunction.Values

Constructor Summary

Constructors

Constructor	Description
MultiFunction(List<ValueSource> sources)

Method Summary

Modifier and Type	Method	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()
static String	description(String name, List<ValueSource> sources)
boolean	equals(Object o)
int	hashCode()
static String	toString(String name, FunctionValues[] valsArr, int doc)
static FunctionValues[]	valsArr(List<ValueSource> sources, Map fcontext, AtomicReaderContext readerContext)

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

getSortField, getValues, newContext, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MultiFunction

public MultiFunction(List<ValueSource> sources)

Method Detail

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Specified by:

description in class ValueSource

description

public static String description(String name,
                                 List<ValueSource> sources)

valsArr

public static FunctionValues[] valsArr(List<ValueSource> sources,
                                       Map fcontext,
                                       AtomicReaderContext readerContext)
                                throws IOException

Throws:

IOException

toString

public static String toString(String name,
                              FunctionValues[] valsArr,
                              int doc)

createWeight

public void createWeight(Map 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

hashCode

public int hashCode()

Specified by:

hashCode in class ValueSource

equals

public boolean equals(Object o)

Specified by:

equals in class ValueSource