org.drools.spi
Interface Tuple

All Superinterfaces:
Serializable
All Known Subinterfaces:
LeftTuple
All Known Implementing Classes:
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
 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.
 InternalFactHandle[] getFactHandles()
          Returns the fact handles in reverse order
 int size()
          Returns the size of this tuple in number of elements (patterns)
 InternalFactHandle[] toFactHandles()
           
 

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

getFactHandles

InternalFactHandle[] getFactHandles()
Returns the fact handles in reverse order


toFactHandles

InternalFactHandle[] toFactHandles()

size

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

Returns:


Copyright © 2001-2012 JBoss by Red Hat. All Rights Reserved.