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Java Source Code / Java Documentation » Science » Cougaar12_4 » org.cougaar.core.blackboard

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.cougaar.core.blackboard .Subscription

org.cougaar.core.blackboard .CollectionSubscription

org.cougaar.core.blackboard .IncrementalSubscription

org.cougaar.core.blackboard .DeltaSubscription

DeltaSubscription

public class DeltaSubscription extends IncrementalSubscription (Code)

A subscription that only tracks add/change/remove deltas.

See CollectionSubscription for a system property that identifies subscriptions that could potentially be changed to DeltaSubscriptions.

We subclass IncrementalSubscription to both reuse code and to make it easy for existing plugins to switch over to this class. For example, the plugin won't need to change its field declaration from:

 private IncrementalSubscription sub;

to be "DeltaSubscription". The only change is the subscribe line:

 sub = (IncrementalSubscription) 
 blackboard.subscribe(new DeltaSubscription(pred));

The downside is a tiny cost per subscription for the pointer to the unused "real" backing collection.

Constructor Summary
public	DeltaSubscription(UnaryPredicate p)

Method Summary
public String	toString()

Constructor Detail

DeltaSubscription
public DeltaSubscription(UnaryPredicate p)(Code)

Method Detail

toString
public String toString()(Code)

Methods inherited from org.cougaar.core.blackboard.IncrementalSubscription

protected Set createAddedSet()(Code)(Java Doc)
public Collection getAddedCollection()(Code)(Java Doc)
public Enumeration getAddedList()(Code)(Java Doc)
public Collection getChangedCollection()(Code)(Java Doc)
public Enumeration getChangedList()(Code)(Java Doc)
public Collection getRemovedCollection()(Code)(Java Doc)
public Enumeration getRemovedList()(Code)(Java Doc)
protected void privateAdd(Object o, boolean isVisible)(Code)(Java Doc)
protected void privateChange(Object o, List changes, boolean isVisible)(Code)(Java Doc)
protected void privateRemove(Object o, boolean isVisible)(Code)(Java Doc)
protected void resetChanges()(Code)(Java Doc)

Fields inherited from org.cougaar.core.blackboard.CollectionSubscription

protected Collection real(Code)(Java Doc)

Methods inherited from org.cougaar.core.blackboard.CollectionSubscription

public boolean add(Object o)(Code)(Java Doc)
public boolean addAll(Collection c)(Code)(Java Doc)
public void clear()(Code)(Java Doc)
boolean conditionalChange(Object o, List changes, boolean isVisible)(Code)(Java Doc)
public boolean contains(Object o)(Code)(Java Doc)
public boolean containsAll(Collection c)(Code)(Java Doc)
public Enumeration elements()(Code)(Java Doc)
public boolean equals(Object o)(Code)(Java Doc)
public Object first()(Code)(Java Doc)
public Set getChangeReports(Object o)(Code)(Java Doc)
public Collection getCollection()(Code)(Java Doc)
public boolean isEmpty()(Code)(Java Doc)
public Iterator iterator()(Code)(Java Doc)
protected void privateAdd(Object o, boolean isVisible)(Code)(Java Doc)
protected void privateChange(Object o, List changes, boolean isVisible)(Code)(Java Doc)
protected Collection privateGetChangedCollection()(Code)(Java Doc)
protected Enumeration privateGetChangedList()(Code)(Java Doc)
protected void privateRemove(Object o, boolean isVisible)(Code)(Java Doc)
public boolean remove(Object o)(Code)(Java Doc)
public boolean removeAll(Collection c)(Code)(Java Doc)
protected void resetChanges()(Code)(Java Doc)
public boolean retainAll(Collection c)(Code)(Java Doc)
public int size()(Code)(Java Doc)
public Object[] toArray()(Code)(Java Doc)
public Object[] toArray(Object[] a)(Code)(Java Doc)
public String toString()(Code)(Java Doc)

Fields inherited from org.cougaar.core.blackboard.Subscription

protected boolean myHasChanged(Code)(Java Doc)
final protected UnaryPredicate predicate(Code)(Java Doc)
protected Subscriber subscriber(Code)(Java Doc)

Methods inherited from org.cougaar.core.blackboard.Subscription

public boolean apply(Envelope envelope)(Code)(Java Doc)
final protected void checkTransactionOK(String s)(Code)(Java Doc)
boolean conditionalAdd(Object o, boolean isVisible)(Code)(Java Doc)
boolean conditionalChange(Object o, List changes, boolean isVisible)(Code)(Java Doc)
boolean conditionalRemove(Object o, boolean isVisible)(Code)(Java Doc)
public void fill(Envelope envelope)(Code)(Java Doc)
public String getName()(Code)(Java Doc)
final public Subscriber getSubscriber()(Code)(Java Doc)
final public boolean hasChanged()(Code)(Java Doc)
abstract protected void privateAdd(Object o, boolean isVisible)(Code)(Java Doc)
final protected boolean privateApply(Envelope envelope)(Code)(Java Doc)
abstract protected void privateChange(Object o, List changes, boolean isVisible)(Code)(Java Doc)
abstract protected void privateRemove(Object o, boolean isVisible)(Code)(Java Doc)
protected void resetChanges()(Code)(Java Doc)
final protected void setChanged(boolean changed)(Code)(Java Doc)
final void setIsInitialized()(Code)(Java Doc)
final void setSubscriber(Subscriber s)(Code)(Java Doc)
final protected void subscriberSignalExternalActivity()(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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