Eclipse Plug-in Developer Guide (Galileo) - MapDiff (Eclipse Platform API Specification)

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Eclipse Platform
Release 3.5

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org.eclipse.core.databinding.observable.map
Class MapDiff


java.lang.Object
  
org.eclipse.core.databinding.observable.map.MapDiff

All Implemented Interfaces:: IDiff

public abstract class MapDiff
extends Object
implements IDiff
extends Object
implements IDiff

Since:: 1.1

Constructor Summary

MapDiff ()


Method Summary

void applyTo ( Map map)
          Applies the changes in this diff to the given map

abstract Set getAddedKeys ()


abstract Set getChangedKeys ()


abstract Object getNewValue ( Object key)
          Returns the new value for the given key, which must be an element of getChangedKeys() or getAddedKeys().

abstract Object getOldValue ( Object key)
          Returns the old value for the given key, which must be an element of getRemovedKeys() or getChangedKeys().

abstract Set getRemovedKeys ()


boolean isEmpty ()
          Returns true if the diff has no added, removed or changed entries.

Methods inherited from class java.lang. Object

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

Constructor Detail

MapDiff

public MapDiff()

Method Detail

isEmpty

public boolean isEmpty()

Returns true if the diff has no added, removed or changed entries.

Returns:: true if the diff has no added, removed or changed entries.
Since:: 1.2

applyTo

public void applyTo(
Map map)

Applies the changes in this diff to the given map

Parameters:: map - the map to which the diff will be applied
Since:: 1.2

getAddedKeys

public abstract 
Set getAddedKeys()

Returns:: the set of keys which were added

getRemovedKeys

public abstract 
Set getRemovedKeys()

Returns:: the set of keys which were removed

getChangedKeys

public abstract 
Set getChangedKeys()

Returns:: the set of keys for which the value has changed

getOldValue

public abstract 
Object getOldValue(
Object key)

Returns the old value for the given key, which must be an element of getRemovedKeys() or getChangedKeys().

Parameters:: key -
Returns:: the old value for the given key.

getNewValue

public abstract 
Object getNewValue(
Object key)

Returns the new value for the given key, which must be an element of getChangedKeys() or getAddedKeys().

Parameters:: key -
Returns:: the new value for the given key.