ptolemy.actor.lib
Class Sampler
java.lang.Object
ptolemy.kernel.util.NamedObj
ptolemy.kernel.InstantiableNamedObj
ptolemy.kernel.Entity
ptolemy.kernel.ComponentEntity
ptolemy.actor.AtomicActor
ptolemy.actor.TypedAtomicActor
ptolemy.actor.lib.Transformer
ptolemy.actor.lib.Sampler
- All Implemented Interfaces:
- java.io.Serializable, java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable
public class Sampler
- extends Transformer
This actor generates discrete events by sampling the input signal whenever
the trigger input is present.
This sampler will send to the output whatever input occurs
at a sample time; if the input is absent, the output will be
absent.
This actor has multiport inputs and outputs. Signals in
each input channel are sampled and produced to corresponding output
channel. When there are multiple inputs, the first non-absent input
from each channel is read, and the output is produced at the first
microstep after the last of the inputs became non-absent.
- Since:
- Ptolemy II 8.0
- Version:
- $Id: Sampler.java 59167 2010-09-21 17:08:02Z cxh $
- Author:
- Edward A. Lee
- See Also:
- Serialized Form
- Accepted Rating:
- Proposed Rating:
| Fields inherited from class ptolemy.kernel.util.NamedObj |
_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS |
|
Constructor Summary |
Sampler(CompositeEntity container,
java.lang.String name)
Construct an actor in the specified container with the specified
name. |
|
Method Summary |
java.lang.Object |
clone(Workspace workspace)
Clone this actor into the specified workspace. |
void |
fire()
Generate an output if the current time is one of the sampling
times. |
| Methods inherited from class ptolemy.actor.AtomicActor |
_actorFiring, _actorFiring, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, initialize, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, postfire, prefire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate, wrapup |
| Methods inherited from class ptolemy.kernel.ComponentEntity |
_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName |
| Methods inherited from class ptolemy.kernel.Entity |
_description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName |
| Methods inherited from class ptolemy.kernel.util.NamedObj |
_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _debug, _debug, _debug, _debug, _debug, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _propagateValue, _recordDecoratedAttributes, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, attributeChanged, attributeList, attributeList, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getFullName, getModelErrorHandler, getName, getName, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, propagateValue, propagateValues, removeChangeListener, removeDebugListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, validateSettables, workspace |
| Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
trigger
public TypedIOPort trigger
- The trigger port, which has undeclared type. If this port
receives a token, then the most recent token from the
input port will be emitted on the output port.
Sampler
public Sampler(CompositeEntity container,
java.lang.String name)
throws IllegalActionException,
NameDuplicationException
- Construct an actor in the specified container with the specified
name. The name must be unique within the container or an exception
is thrown. The container argument must not be null, or a
NullPointerException will be thrown.
The actor can be either dynamic, or not. It must be set at the
construction time and can't be changed thereafter.
A dynamic actor will produce a token at its initialization phase.
- Parameters:
container - The container of this actor.name - The actor's name
- Throws:
IllegalActionException - If the entity cannot be contained
by the proposed container.
NameDuplicationException - If name coincides with
an entity already in the container.
clone
public java.lang.Object clone(Workspace workspace)
throws java.lang.CloneNotSupportedException
- Clone this actor into the specified workspace. The new actor is
not added to the directory of that workspace (you must do this
yourself if you want it there).
The result is a new actor with the same ports as the original, but
no connections and no container. A container must be set before
much can be done with this actor.
- Overrides:
clone in class AtomicActor
- Parameters:
workspace - The workspace for the cloned object.
- Returns:
- A new ComponentEntity.
- Throws:
java.lang.CloneNotSupportedException - If cloned ports cannot have
as their container the cloned entity (this should not occur), or
if one of the attributes cannot be cloned.- See Also:
NamedObj.exportMoML(Writer, int, String),
NamedObj.setDeferringChangeRequests(boolean)
fire
public void fire()
throws IllegalActionException
- Generate an output if the current time is one of the sampling
times. The value of the event is the value of the input signal at the
current time.
- Specified by:
fire in interface Executable- Overrides:
fire in class AtomicActor
- Throws:
IllegalActionException - If the transfer of tokens failed.