ptolemy.domains.continuous.kernel
Class ContinuousIntegrator.IntegratorCausalityInterface

java.lang.Object
  ptolemy.actor.util.DefaultCausalityInterface
      ptolemy.domains.continuous.kernel.ContinuousIntegrator.IntegratorCausalityInterface

All Implemented Interfaces:

CausalityInterface

Enclosing class:

ContinuousIntegrator

private static class ContinuousIntegrator.IntegratorCausalityInterface
extends DefaultCausalityInterface

Custom causality interface that fine tunes the equivalent ports and removes the dependence of the state output on the derivative input. Ensure that only the impulse and initialState inputs are equivalent (the base class will make all ports equivalent because the initialState input is a ParameterPort).

Field Summary

private ContinuousIntegrator	_actor
private java.util.LinkedList<IOPort>	_derivativeEquivalents
private java.util.LinkedList<IOPort>	_otherEquivalents

Fields inherited from class ptolemy.actor.util.DefaultCausalityInterface

_backwardPrunedDependencies, _defaultDependency, _delayDependencies, _EMPTY_COLLECTION, _forwardPrunedDependencies

Constructor Summary

ContinuousIntegrator.IntegratorCausalityInterface(ContinuousIntegrator actor, Dependency defaultDependency)

Method Summary

java.util.Collection<IOPort>

equivalentPorts(IOPort input) Override the base class to declare that the initialState and impulse inputs are equivalent, but not the derivative input port.

Methods inherited from class ptolemy.actor.util.DefaultCausalityInterface

_growDependencies, declareDelayDependency, dependentPorts, getActor, getDefaultDependency, getDependency, removeDependency, toString

Methods inherited from class java.lang.Object

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

Field Detail

_actor

private ContinuousIntegrator _actor

_derivativeEquivalents

private java.util.LinkedList<IOPort> _derivativeEquivalents

_otherEquivalents

private java.util.LinkedList<IOPort> _otherEquivalents

Constructor Detail

ContinuousIntegrator.IntegratorCausalityInterface

public ContinuousIntegrator.IntegratorCausalityInterface(ContinuousIntegrator actor,
                                                         Dependency defaultDependency)

Method Detail

equivalentPorts

public java.util.Collection<IOPort> equivalentPorts(IOPort input)

Override the base class to declare that the initialState and impulse inputs are equivalent, but not the derivative input port. This is because to react to inputs at either initialState or impulse, we have to know what the input at the other is. But the input at derivative does not need to be known. It will affect the future only.

Specified by:

equivalentPorts in interface CausalityInterface

Overrides:

equivalentPorts in class DefaultCausalityInterface

Parameters:

input - The port to find the equivalence class of.

Returns:

set of the input ports in this actor that are in an equivalence class with the specified input.

Throws:

java.lang.IllegalArgumentException - If the argument is not contained by the associated actor.