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java.lang.Objectorg.eclipse.core.databinding.observable.AbstractObservable
org.eclipse.core.databinding.observable.map.ObservableMap
org.eclipse.core.databinding.observable.map.CompositeMap
public class CompositeMap
A read-only observable map formed by the composition of two observable maps. If map1 maps keys a:A to values b1:B, and map2 maps keys b2:B to values c:C, the composite map maps keys a:A to values c:C. For example, map1 could map Order objects to their corresponding Customer objects, and map2 could map Customer objects to their "last name" property of type String. The composite map of map1 and map2 would then map Order objects to their customers' last names.
This class is thread safe. All state accessing methods must be invoked from
the current realm
. Methods for adding and removing
listeners may be invoked from any thread.
Nested Class Summary |
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Nested classes/interfaces inherited from interface java.util.Map |
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Map.Entry<K,V> |
Field Summary |
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Fields inherited from class org.eclipse.core.databinding.observable.map.ObservableMap |
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wrappedMap |
Constructor Summary | |
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CompositeMap(IObservableMap firstMap,
IObservableFactory secondMapFactory)
Creates a new composite map. |
Method Summary | |
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protected void |
addListener(Object listenerType,
IObservablesListener listener)
|
protected Object |
clone()
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void |
dispose()
Disposes of this observable object, removing all listeners registered with this object, and all listeners this object might have registered on other objects. |
protected void |
fireEvent(ObservableEvent event)
|
protected void |
firstListenerAdded()
|
Object |
getKeyType()
Returns the element type for the keyset of this
observable map, or null if the keyset is untyped. |
Realm |
getRealm()
|
Object |
getValueType()
Returns the element type for the values of this
observable map, or null if the values collection is untyped. |
protected boolean |
hasListeners()
|
protected void |
lastListenerRemoved()
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protected void |
removeListener(Object listenerType,
IObservablesListener listener)
|
Methods inherited from class org.eclipse.core.databinding.observable.map.ObservableMap |
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addMapChangeListener, clear, containsKey, containsValue, entrySet, equals, fireMapChange, get, getterCalled, hashCode, isEmpty, isStale, keySet, put, putAll, remove, removeMapChangeListener, setStale, size, values |
Methods inherited from class org.eclipse.core.databinding.observable.AbstractObservable |
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addChangeListener, addDisposeListener, addStaleListener, checkRealm, fireChange, fireStale, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.eclipse.core.databinding.observable.IObservable |
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addChangeListener, addDisposeListener, addStaleListener, getRealm, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Constructor Detail |
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public CompositeMap(IObservableMap firstMap, IObservableFactory secondMapFactory)
firstMap
, it cannot be passed in as an argument. Instead,
the second map will be created by calling
secondMapFactory.createObservable(valueSet())
.
firstMap
- the first mapsecondMapFactory
- a factory that creates the second map when given an observable
set representing the value set of firstMap
.Method Detail |
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public Object getKeyType()
IObservableMap
keyset
of this
observable map, or null
if the keyset is untyped.
getKeyType
in interface IObservableMap
getKeyType
in class ObservableMap
keyset
of this
observable map, or null
if the keyset is untyped.public Object getValueType()
IObservableMap
values
of this
observable map, or null
if the values collection is untyped.
getValueType
in interface IObservableMap
getValueType
in class ObservableMap
values
of this
observable map, or null
if the values collection is
untyped.public void dispose()
IObservable
dispose
in interface IObservable
dispose
in class ObservableMap
protected void addListener(Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected void removeListener(Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected boolean hasListeners()
protected void fireEvent(ObservableEvent event)
protected void firstListenerAdded()
protected void lastListenerRemoved()
public Realm getRealm()
protected Object clone() throws CloneNotSupportedException
clone
in class Object
CloneNotSupportedException
|
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