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org.eclipse.emf.query.conditions.eobjects
Class EObjectInstanceCondition

java.lang.Object
  extended by 

org.eclipse.emf.query.conditions.Condition
      extended by 

org.eclipse.emf.query.conditions.eobjects.EObjectCondition
          extended by 

org.eclipse.emf.query.conditions.eobjects.EObjectTypeRelationCondition
              extended by 
org.eclipse.emf.query.conditions.eobjects.EObjectInstanceCondition

public class EObjectInstanceCondition
extends EObjectTypeRelationCondition

A EObjectCondition that tests whether the argument eObject instance equals a given eObject.

To look for null values in scalar EReferences, use the special IS_NULL shared condition instance. Simply initializing an EObjectInstanceCondition with null will not work.


Field Summary
static  EObjectInstanceCondition IS_NULL
          A special object-instance condition checking that a value is null.
 
Fields inherited from class org.eclipse.emf.query.conditions.eobjects. EObjectTypeRelationCondition
UNDEFINED
 
Fields inherited from class org.eclipse.emf.query.conditions.eobjects. EObjectCondition
E_FALSE, E_TRUE
 
Fields inherited from class org.eclipse.emf.query.conditions. Condition
FALSE, TRUE
 
Constructor Summary
EObjectInstanceCondition ( EObject eObject)
          A simple constructor that allows callers to initialize the EObject instance to use for equality testing by this EObjectInstanceCondition.
EObjectInstanceCondition ( EObject eObject, PruneHandler pruneHandler)
          A constructor that allows callers to initialize this EObjectInstanceCondition
 
Method Summary
protected   EObject getEObject ()
          A getter function for the EObject instance used by this EObjectInstanceCondition
 boolean isSatisfied ( EObject eObj)
          Tests whether the argument EObject instance equals this EObjectInstanceCondition's own EObject instance.
 
Methods inherited from class org.eclipse.emf.query.conditions.eobjects. EObjectCondition
AND, EQUIVALENT, getPruneHandler, IMPLIES, isSatisfied, OR, shouldPrune, XOR
 
Methods inherited from class org.eclipse.emf.query.conditions. Condition
AND, EQUIVALENT, IMPLIES, OR, XOR
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

IS_NULL

public static final 
EObjectInstanceCondition IS_NULL
A special object-instance condition checking that a value is null.

Since:
1.1
Constructor Detail

EObjectInstanceCondition

public EObjectInstanceCondition(
EObject eObject)
A simple constructor that allows callers to initialize the EObject instance to use for equality testing by this EObjectInstanceCondition. This constructor uses PruneHandler.NEVER

Parameters:
eObject - the EObject to use in equality testing

EObjectInstanceCondition

public EObjectInstanceCondition(
EObject eObject,
                                
PruneHandler pruneHandler)
A constructor that allows callers to initialize this EObjectInstanceCondition

Parameters:
eObject - the EObject to use in equality testing
pruneHandler - the PruneHandler to use
Method Detail

isSatisfied

public boolean isSatisfied(
EObject eObj)
Tests whether the argument EObject instance equals this EObjectInstanceCondition's own EObject instance.

Overrides:
isSatisfied in class EObjectTypeRelationCondition
Parameters:
eObj - the EObject to check
Returns:
boolean true if the argument eObject satisfies this EObjectCondition
See Also:
EObjectCondition.isSatisfied(org.eclipse.emf.ecore.EObject)

getEObject

protected final 
EObject getEObject()
A getter function for the EObject instance used by this EObjectInstanceCondition

Returns:
EObject the given object instance which we test equality for

Copyright 2002, 2007 IBM Corporation and others.
All Rights Reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire