ptolemy.actor.ptalon.lib
Class MapFileStorage

java.lang.Object
  ptolemy.kernel.util.NamedObj
      ptolemy.kernel.InstantiableNamedObj
          ptolemy.kernel.Entity
              ptolemy.kernel.ComponentEntity
                  ptolemy.actor.AtomicActor
                      ptolemy.actor.TypedAtomicActor
                          ptolemy.domains.de.kernel.DEActor
                              ptolemy.actor.ptalon.lib.MapFileStorage

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, SequenceActor, TimedActor, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

public class MapFileStorage
extends DEActor

A DE actor that stores data from a MapWorker and distributes it to a ReduceWorker, upon request from the reduce worker.

Since:

Ptolemy II 6.1

Version:

$Id: MapFileStorage.java 57040 2010-01-27 20:52:32Z cxh $

Author:

Adam Cataldo

See Also:

Serialized Form

Accepted Rating:

Red (cxh)

Proposed Rating:

Red (cxh)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.Entity

Entity.ContainedObjectsIterator

Field Summary

private boolean	_doneReceiving
private java.util.List<java.util.LinkedList<java.lang.String>>	_keyBuffers
private boolean	_readMode
private java.util.List<java.util.LinkedList<java.lang.String>>	_valueBuffers
TypedIOPort	doneEmitting The inputTrigger port.
TypedIOPort	doneReceiving The inputTrigger port.
TypedIOPort	inputKey The inputTrigger port.
TypedIOPort	inputValue The inputTrigger port.
Parameter	numberOfOutputs The number of output actors to write to.
TypedIOPort	outputKey The output port.
TypedIOPort	outputValue The output port.

Fields inherited from class ptolemy.actor.AtomicActor

_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS

Fields inherited from interface ptolemy.actor.Executable

COMPLETED, NOT_READY, STOP_ITERATING

Constructor Summary

MapFileStorage(CompositeEntity container, java.lang.String name)
Construct an actor with the given container and name.

Method Summary

void	attributeChanged(Attribute attribute) If the specified attribute is fileOrURLPrefix and there is an open file being read, then close that file and open the new one; if the attribute is numberOfLinesToSkip and its value is negative, then throw an exception.
java.lang.Object	clone(Workspace workspace) Clone the actor into the specified workspace.
void	fire() Output the data read in the preinitialize() or in the previous invocation of postfire(), if there is any.
void	initialize() If this is called after prefire() has been called but before wrapup() has been called, then close any open file re-open it, skip the number of lines given by the numberOfLinesToSkip parameter, and read the first line to be produced in the next invocation of prefire().
boolean	postfire() Return true, unless stop() has been called, in which case, return false.
boolean	prefire() Return false if there is no more data available in the file.
void	wrapup() Close the reader if there is one.

Methods inherited from class ptolemy.actor.TypedAtomicActor

_addPort, _fireAt, _fireAt, attributeTypeChanged, clone, newPort, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate

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.InstantiableNamedObj

_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition

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, 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

Methods inherited from interface ptolemy.actor.Actor

createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortList

Methods inherited from interface ptolemy.actor.Executable

isFireFunctional, isStrict, iterate, stop, stopFire, terminate

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, preinitialize, removeInitializable

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getContainer, getDisplayName, getFullName, getName, getName, setName

Methods inherited from interface ptolemy.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Field Detail

doneReceiving

public TypedIOPort doneReceiving

The inputTrigger port. The type of this port is undeclared, meaning that it will resolve to any data type.

doneEmitting

public TypedIOPort doneEmitting

The inputTrigger port. The type of this port is undeclared, meaning that it will resolve to any data type.

inputKey

public TypedIOPort inputKey

The inputTrigger port. The type of this port is undeclared, meaning that it will resolve to any data type.

inputValue

public TypedIOPort inputValue

The inputTrigger port. The type of this port is undeclared, meaning that it will resolve to any data type.

numberOfOutputs

public Parameter numberOfOutputs

The number of output actors to write to. This parameter contains an IntToken, initially with value 1. The value must be greater than zero.

outputKey

public TypedIOPort outputKey

The output port. The type of this port is unspecified. Derived classes may set it.

outputValue

public TypedIOPort outputValue

The output port. The type of this port is unspecified. Derived classes may set it.

_doneReceiving

private boolean _doneReceiving

_keyBuffers

private java.util.List<java.util.LinkedList<java.lang.String>> _keyBuffers

_readMode

private boolean _readMode

_valueBuffers

private java.util.List<java.util.LinkedList<java.lang.String>> _valueBuffers

Constructor Detail

MapFileStorage

public MapFileStorage(CompositeEntity container,
                      java.lang.String name)
               throws IllegalActionException,
                      NameDuplicationException

Construct an actor with the given container and name.

Parameters:

container - The container.

name - The name of this actor.

Throws:

IllegalActionException - If the actor cannot be contained by the proposed container.

NameDuplicationException - If the container already has an actor with this name.

Method Detail

attributeChanged

public void attributeChanged(Attribute attribute)
                      throws IllegalActionException

If the specified attribute is fileOrURLPrefix and there is an open file being read, then close that file and open the new one; if the attribute is numberOfLinesToSkip and its value is negative, then throw an exception. In the case of fileOrURLPrefix, do nothing if the file name is the same as the previous value of this attribute.

Overrides:

attributeChanged in class NamedObj

Parameters:

attribute - The attribute that has changed.

Throws:

IllegalActionException - If the specified attribute is fileOrURLPrefix and the file cannot be opened, or the previously opened file cannot be closed; or if the attribute is numberOfLinesToSkip and its value is negative.

clone

public java.lang.Object clone(Workspace workspace)
                       throws java.lang.CloneNotSupportedException

Clone the actor into the specified workspace. This calls the base class and then sets the type constraints.

Overrides:

clone in class AtomicActor

Parameters:

workspace - The workspace for the new object.

Returns:

A new actor.

Throws:

java.lang.CloneNotSupportedException - If a derived class has an attribute that cannot be cloned.

See Also:

NamedObj.exportMoML(Writer, int, String), NamedObj.setDeferringChangeRequests(boolean)

fire

public void fire()
          throws IllegalActionException

Output the data read in the preinitialize() or in the previous invocation of postfire(), if there is any.

Specified by:

fire in interface Executable

Overrides:

fire in class AtomicActor

Throws:

IllegalActionException - If there's no director.

initialize

public void initialize()
                throws IllegalActionException

If this is called after prefire() has been called but before wrapup() has been called, then close any open file re-open it, skip the number of lines given by the numberOfLinesToSkip parameter, and read the first line to be produced in the next invocation of prefire(). This occurs if this actor is re-initialized during a run of the model.

Specified by:

initialize in interface Initializable

Overrides:

initialize in class AtomicActor

Throws:

IllegalActionException - If the file or URL cannot be opened, or if the lines to be skipped and the first line to be sent out in the fire() method cannot be read.

prefire

public boolean prefire()
                throws IllegalActionException

Return false if there is no more data available in the file. Otherwise, return whatever the superclass returns.

Specified by:

prefire in interface Executable

Overrides:

prefire in class AtomicActor

Returns:

True if this actor is ready for firing, false otherwise.

Throws:

IllegalActionException - If the superclass throws it.

postfire

public boolean postfire()
                 throws IllegalActionException

Return true, unless stop() has been called, in which case, return false. Derived classes override this method to define operations to be performed at the end of every iteration of its execution, after one invocation of the prefire() method and any number of invocations of the fire() method. This method typically wraps up an iteration, which may involve updating local state. In derived classes, this method returns false to indicate that this actor should not be fired again.

Specified by:

postfire in interface Executable

Overrides:

postfire in class AtomicActor

Returns:

True if execution can continue into the next iteration.

Throws:

IllegalActionException - Not thrown in this base class.

wrapup

public void wrapup()
            throws IllegalActionException

Close the reader if there is one.

Specified by:

wrapup in interface Initializable

Overrides:

wrapup in class AtomicActor

Throws:

IllegalActionException - If an IO error occurs.