public abstract class URLReader extends Source
The file format at the URL is assumed as the following. A newline character separates the rows, and a tab or a space character separates the columns.
The sourceURL parameter should be set to the name of the file, specified as a fully qualified URL. If the sourceURL parameter is an empty string, then the System.in is used for input. It is possible to load a file from the local file system by using the prefix "file://" instead of "http://". Relative file paths are allowed. To specify a file relative to the current directory, use "../" or "./". For example, if the current directory contains a file called "test.txt", then sourceURL should be set to "file:./test.txt". If the parent directory contains a file called "test.txt", then sourceURL should be set to "file:../test.txt". To reference the file test.txt, located at "/tmp/test.txt", sourceURL should be set to "file:///tmp/test.txt" The default value is "file:///tmp/test.txt".
FIXME: The type of the output ports is set to Double for now. It should read a line in the prefire() and refer the type from there.
FIXME: URLReader should read in expressions and serialized tokens
AudioReaderEntity.ContainedObjectsIterator| Modifier and Type | Field and Description |
|---|---|
protected java.io.BufferedReader |
_reader
The reader to read from.
|
protected boolean |
_refreshFlag
Flag to indicate whether or not to refresh the data
between readings.
|
protected java.lang.String |
_source
String for the URL.
|
protected static java.io.BufferedReader |
_stdIn
Standard in as a reader.
|
Parameter |
refresh
The flag that indicates whether to refresh between each reading.
|
Parameter |
sourceURL
The URL of the file to read from.
|
_triggered, output, trigger_typesValid_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKSCOMPLETED, NOT_READY, STOP_ITERATING| Constructor and Description |
|---|
URLReader(CompositeEntity container,
java.lang.String name)
Construct an actor with the given container and name.
|
| Modifier and Type | Method and Description |
|---|---|
protected void |
_setURLReader(java.io.BufferedReader reader)
Set the reader.
|
void |
attributeChanged(Attribute attribute)
If the specified attribute is URL, then close
the current file (if there is one) and open the new one.
|
void |
initialize()
Open the file at the URL, and set the width of the output.
|
void |
wrapup()
Close the reader if there is one.
|
_customTypeConstraints, fire, prefire_containedTypeConstraints, _defaultTypeConstraints, _fireAt, _fireAt, attributeTypeChanged, clone, clone, isBackwardTypeInferenceEnabled, newPort, typeConstraintList, typeConstraints_actorFiring, _actorFiring, _declareDelayDependency, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, postfire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName_addPort, _description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeDeleted, attributeList, attributeList, decorators, 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, notifyOfNameChange, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, validateSettables, workspaceequals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitcreateReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortListisFireFunctional, isStrict, iterate, postfire, stop, stopFire, terminateaddInitializable, preinitialize, removeInitializabledescription, getContainer, getDisplayName, getFullName, getName, getName, setNamegetDerivedLevel, getDerivedList, propagateValuepublic Parameter sourceURL
public Parameter refresh
protected java.io.BufferedReader _reader
protected static java.io.BufferedReader _stdIn
protected java.lang.String _source
protected boolean _refreshFlag
public URLReader(CompositeEntity container, java.lang.String name) throws IllegalActionException, NameDuplicationException
container - The container.name - The name of this actor.IllegalActionException - If the actor cannot be contained
by the proposed container.NameDuplicationException - If the container already has an
actor with this name.public void attributeChanged(Attribute attribute) throws IllegalActionException
attributeChanged in class NamedObjattribute - The attribute that has changed.IllegalActionException - If the specified attribute
is URL and the file cannot be opened.public void initialize()
throws IllegalActionException
initialize in interface Initializableinitialize in class AtomicActor<TypedIOPort>IllegalActionException - Not thrown in this base classpublic void wrapup()
throws IllegalActionException
wrapup in interface Initializablewrapup in class AtomicActor<TypedIOPort>IllegalActionException - If an IO error occurs.protected void _setURLReader(java.io.BufferedReader reader)
throws IllegalActionException
reader - The reader to read to.IllegalActionException - If an IO error occurs.