Package ca.uqac.lif.cep.fsm

Class FunctionTransition

java.lang.Object

ca.uqac.lif.cep.fsm.MooreMachine.Transition

ca.uqac.lif.cep.fsm.FunctionTransition

All Implemented Interfaces:

ca.uqac.lif.cep.Duplicable

Direct Known Subclasses:

TransitionOtherwise

public class FunctionTransition
extends MooreMachine.Transition

Transition for a Moore Machine where the guard is a function returning a boolean, and the context modification is a list of ContextAssignments.

Author:

Sylvain Hallé

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.List<ca.uqac.lif.cep.functions.ContextAssignment>	m_assignments
protected int	m_destination
protected ca.uqac.lif.cep.functions.Function	m_function

Constructor Summary

Constructors

Constructor	Description
FunctionTransition(FunctionTransition t)
FunctionTransition(ca.uqac.lif.cep.functions.Function function, int destination)
FunctionTransition(ca.uqac.lif.cep.functions.Function function, int destination, ca.uqac.lif.cep.functions.ContextAssignment asg)
FunctionTransition(ca.uqac.lif.cep.functions.Function function, int destination, ca.uqac.lif.cep.functions.ContextAssignment... asgs)

Method Summary

Modifier and Type	Method	Description
FunctionTransition	duplicate(boolean with_state)
int	getDestination()	Gets the destination (i.e.
boolean	isFired(java.lang.Object[] input, ca.uqac.lif.cep.Context context)	Determines if the transition fires for the given input
void	modifyContext(java.lang.Object[] inputs, java.lang.Object[] outputs, MooreMachine machine)	Modifies the context of the state machine
java.lang.String	toString()

Methods inherited from class ca.uqac.lif.cep.fsm.MooreMachine.Transition

duplicate, reset

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_function

protected ca.uqac.lif.cep.functions.Function m_function

m_assignments

protected java.util.List<ca.uqac.lif.cep.functions.ContextAssignment> m_assignments

m_destination

protected int m_destination

Constructor Detail

FunctionTransition

public FunctionTransition(FunctionTransition t)

FunctionTransition

public FunctionTransition(ca.uqac.lif.cep.functions.Function function,
                          int destination,
                          ca.uqac.lif.cep.functions.ContextAssignment asg)

FunctionTransition

public FunctionTransition(ca.uqac.lif.cep.functions.Function function,
                          int destination,
                          ca.uqac.lif.cep.functions.ContextAssignment... asgs)

FunctionTransition

public FunctionTransition(ca.uqac.lif.cep.functions.Function function,
                          int destination)

Method Detail

isFired

public boolean isFired(java.lang.Object[] input,
                       ca.uqac.lif.cep.Context context)

Description copied from class: MooreMachine.Transition

Determines if the transition fires for the given input

Overrides:

isFired in class MooreMachine.Transition

Parameters:

input - The input events

context - The context for the evaluation

Returns:

true if the transition fires, false otherwise

getDestination

public int getDestination()

Description copied from class: MooreMachine.Transition

Gets the destination (i.e. target state) of that transition

Overrides:

getDestination in class MooreMachine.Transition

Returns:

The destination state

modifyContext

public void modifyContext(java.lang.Object[] inputs,
                          java.lang.Object[] outputs,
                          MooreMachine machine)

Description copied from class: MooreMachine.Transition

Modifies the context of the state machine

Overrides:

modifyContext in class MooreMachine.Transition

Parameters:

inputs - The input parameters to the context assignment

outputs - The output parameters to the context assignment

machine - The Moore machine whose context is to be modified

duplicate

public FunctionTransition duplicate(boolean with_state)

Specified by:

duplicate in interface ca.uqac.lif.cep.Duplicable

Overrides:

duplicate in class MooreMachine.Transition

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object