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

java.lang.Object
  org.eclipse.emf.query.conditions.Condition
      org.eclipse.emf.query.conditions.eobjects.EObjectCondition
          org.eclipse.emf.query.conditions.eobjects.EObjectTypeRelationCondition
              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