org.drools.core.spi

Interface Tuple

All Superinterfaces:

Serializable

All Known Subinterfaces:

LeftTuple

All Known Implementing Classes:

BaseLeftTuple, EvalNodeLeftTuple, FromNodeLeftTuple, JoinNodeLeftTuple, LeftTupleImpl, NotNodeLeftTuple, QueryElementNodeLeftTuple, QueryRiaFixerNodeLeftTuple, RuleTerminalNodeLeftTuple

public interface Tuple
extends Serializable

Partial matches are propagated through the Rete network as Tuples. Each Tuple Is able to return the FactHandleImpl members of the partial match for the requested pattern. The pattern refers to the index position of the FactHandleImpl in the underlying implementation.

See Also:

FactHandle;

Method Summary

Methods

Modifier and Type	Method and Description
InternalFactHandle	get(Declaration declaration) Returns the FactHandle for the given Declaration, which in turn specifcy the Pattern that they depend on.
InternalFactHandle	get(int pattern) Returns the FactHandle for the given pattern index.
int	size() Returns the size of this tuple in number of elements (patterns)
InternalFactHandle[]	toFactHandles() Returns the fact handles in reverse order

Method Detail

get

InternalFactHandle get(int pattern)

Returns the FactHandle for the given pattern index. If the pattern is empty It returns null.

Parameters:

pattern - The index of the pattern from which the FactHandleImpl is to be returned

Returns:

The FactHandle

get

InternalFactHandle get(Declaration declaration)

Returns the FactHandle for the given Declaration, which in turn specifcy the Pattern that they depend on.

Parameters:

declaration - The Declaration which specifies the Pattern

Returns:

The FactHandle

toFactHandles

InternalFactHandle[] toFactHandles()

Returns the fact handles in reverse order

size

int size()

Returns the size of this tuple in number of elements (patterns)

Returns: