Package org.optaplanner.constraint.streams.bavet.common.index

Interface Indexer<T>

Type Parameters:

T - The element type. Often a tuple. For example for from(A).join(B), the tuple is UniTuple<A> xor UniTuple<B>. For example for Bi<A, B>.join(C), the tuple is BiTuple<A, B> xor UniTuple<C>.

public interface Indexer<T>

An indexer for entity or fact X, maps a property or a combination of properties of X, denoted by indexProperties, to all instances of X that match those properties, depending on the the indexer type (equal, lower than, ...). For example for {Lesson(id=1, room=A), Lesson(id=2, room=B), Lesson(id=3, room=A)}, calling visit(room=A) would visit lesson 1 and 3.

The fact X is wrapped in a Tuple, because the BavetTupleState is needed by clients of forEach(IndexProperties, Consumer).

Method Summary

Modifier and Type	Method	Description
void	forEach(IndexProperties indexProperties, Consumer<T> tupleConsumer)
boolean	isEmpty()
TupleListEntry<T>	put(IndexProperties indexProperties, T tuple)
void	remove(IndexProperties indexProperties, TupleListEntry<T> entry)
int	size(IndexProperties indexProperties)

Method Details

put

TupleListEntry<T> put(IndexProperties indexProperties,
 T tuple)

remove

void remove(IndexProperties indexProperties,
 TupleListEntry<T> entry)

size

int size(IndexProperties indexProperties)

forEach

void forEach(IndexProperties indexProperties,
 Consumer<T> tupleConsumer)

isEmpty

boolean isEmpty()