drcl.comp
Class Extension

java.lang.Object
  |
  +--drcl.DrclObj
        |
        +--drcl.comp.Component
              |
              +--drcl.comp.Extension

All Implemented Interfaces:

java.lang.Cloneable, ObjectDuplicable, java.io.Serializable

Direct Known Subclasses:

DataCounter, Extender, FileComponent, NamTrace, Plotter, Relay, Stdout, SystemMonitor, TextDisplay, TrafficMonitor, TrafficMonitor2

public class Extension

extends Component

An extension is a component that behaves as part of other components in the sense that when data arrives at an extension, instead of a new thread is created to handle the data, the thread at the sending component carries over the component boundary. This is achieved by disabling the execution boundary flag of all the ports of an extension component. Note that subclasses must not turn off the "PortNotification" flag and must call super.portAdded(Port) when overriding the method, as this component makes use of them to disable the execution boundary flag of all ports added.

Author:

Hung-ying Tyan

See Also:

Serialized Form

Inner classes inherited from class drcl.comp.Component

Component.LockPack

Fields inherited from class drcl.comp.Component

FLAG_COMPONENT_NOTIFICATION, FLAG_DEBUG_ENABLED, FLAG_DIRECT_OUTPUT_ENABLED, FLAG_ENABLED, FLAG_ERROR_ENABLED, FLAG_EVENT_ENABLED, FLAG_GARBAGE_DISPLAY_ENABLED, FLAG_GARBAGE_ENABLED, FLAG_PORT_NOTIFICATION, FLAG_STARTED, FLAG_STOPPED, FLAG_TRACE_ENABLED, FLAG_UNDEFINED_START, id, infoPort, lockHead, name, parent, PortGroup_DEFAULT_GROUP, PortGroup_EVENT, PortGroup_SERVICE, Root, Trace_DATA, Trace_SEND

Constructor Summary

Extension()

Extension(java.lang.String id_)

Method Summary

boolean	isExtensionEnabled()
protected void	portAdded(Port p_) The hookup method for subclasses to handle the event when the port p_ is added to the component.
void	setExtensionEnabled(boolean enabled_)

Methods inherited from class drcl.comp.Component

_resume, _start, _stop, addComponent, addComponent, addEventPort, addEventPort, addForkPort, addPort, addPort, addPort, addPort, addPort, addPort, addPort, addPort, addServerPort, addServerPort, cancelFork, componentAdded, componentRemoved, connect, containsComponent, containsComponent, containsPort, debug, disconnectAll, disconnectAllPeers, disconnectAllPorts, drop, drop, duplicate, error, error, expose, exposeEventPorts, exposePort, exposePort, exposePort, exposePort, exposePort, findAvailable, findAvailable, findAvailable, finishing, fork, forkAt, getAllComponents, getAllPorts, getAllPorts, getAllWiresInside, getAllWiresInsideOut, getAllWiresOut, getComponent, getComponentFlag, getComponentFlag, getContract, getContractHT, getContractHT, getDebugFlagsInBinary, getDebugLevelNames, getForkManager, getID, getName, getParent, getPort, getPort, getRoot, getRuntime, getTime, iduplicate, info, isAncestorOf, isComponentNotificationEnabled, isContainer, isDebugEnabled, isDebugEnabledAt, isDirectOutputEnabled, isEnabled, isErrorNoticeEnabled, isEventExportEnabled, isGarbageDisplayEnabled, isGarbageEnabled, isPortNotificationEnabled, isPortRemovable, isStarted, isStopped, isTraceEnabled, lock, notify, notifyAll, operate, portRemoved, process, reboot, removeAll, removeAllComponents, removeAllPorts, removeAllPorts, removeComponent, removeComponent, removePort, removePort, removePort, reset, resume, run, sduplicate, send, sendAt, setComponentFlag, setComponentFlag, setComponentNotificationEnabled, setContract, setDebugEnabled, setDebugEnabled, setDebugEnabledAt, setDebugEnabledAt, setDebugEnabledAt, setDirectOutputEnabled, setDirectOutputEnabled, setEnabled, setErrorNoticeEnabled, setErrorNoticeEnabled, setEventExportEnabled, setEventExportEnabled, setExecutionBoundary, setGarbageDisplayEnabled, setGarbageDisplayEnabled, setGarbageEnabled, setGarbageEnabled, setID, setID, setName, setPort, setPort, setPortNotificationEnabled, setPortRemovable, setRuntime, setTraceEnabled, setTraceEnabled, sleepFor, sleepUntil, stop, toString, unexpose, unlock, useLocalForkManager, useLocalForkManager, wait

Methods inherited from class drcl.DrclObj

clone

Methods inherited from class java.lang.Object

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

Constructor Detail

Extension

public Extension()

Extension

public Extension(java.lang.String id_)

Method Detail

portAdded

protected void portAdded(Port p_)

Description copied from class: Component

The hookup method for subclasses to handle the event when the port p_ is added to the component.

Overrides:

portAdded in class Component

setExtensionEnabled

public void setExtensionEnabled(boolean enabled_)

isExtensionEnabled

public boolean isExtensionEnabled()