/**
* <copyright>
* </copyright>
*
* $Id$
*/
package org.eclipse.bpel.model.impl;
import org.eclipse.bpel.model.Activity;
import org.eclipse.bpel.model.BPELPackage;
import org.eclipse.bpel.model.Catch;
import org.eclipse.bpel.model.CatchAll;
import org.eclipse.bpel.model.CompensateScope;
import org.eclipse.bpel.model.CompensationHandler;
import org.eclipse.bpel.model.Invoke;
import org.eclipse.bpel.model.Scope;
import org.eclipse.bpel.model.proxy.ScopeProxy;
import org.eclipse.bpel.model.util.BPELConstants;
import org.eclipse.bpel.model.util.ReconciliationHelper;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
/**
* <!-- begin-user-doc -->
* An implementation of the model object '<em><b>Compensate Scope</b></em>'.
* <!-- end-user-doc -->
* <p>
* The following features are implemented:
* <ul>
* <li>{@link org.eclipse.bpel.model.impl.CompensateScopeImpl#getTarget <em>Target</em>}</li>
* </ul>
* </p>
*
* @generated
*/
public class CompensateScopeImpl extends ActivityImpl implements
CompensateScope {
/**
* The cached value of the '{@link #getTarget() <em>Target</em>}' reference.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @see #getTarget()
* @generated
* @ordered
*/
protected Activity target;
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected CompensateScopeImpl() {
super();
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
protected EClass eStaticClass() {
return BPELPackage.Literals.COMPENSATE_SCOPE;
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public Activity getTarget() {
if (target != null && target.eIsProxy()) {
InternalEObject oldTarget = (InternalEObject) target;
target = (Activity) eResolveProxy(oldTarget);
if (target != oldTarget) {
if (eNotificationRequired())
eNotify(new ENotificationImpl(this, Notification.RESOLVE,
BPELPackage.COMPENSATE_SCOPE__TARGET, oldTarget,
target));
}
}
return target;
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public Activity basicGetTarget() {
return target;
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
*/
public void setTarget(Activity newTarget) {
Activity oldTarget = target;
if (!isReconciling) {
ReconciliationHelper.replaceAttribute(this,
BPELConstants.AT_TARGET, newTarget == null ? null
: newTarget.getName());
}
target = newTarget;
if (eNotificationRequired())
eNotify(new ENotificationImpl(this, Notification.SET,
BPELPackage.COMPENSATE_SCOPE__TARGET, oldTarget, target));
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public Object eGet(int featureID, boolean resolve, boolean coreType) {
switch (featureID) {
case BPELPackage.COMPENSATE_SCOPE__TARGET:
if (resolve)
return getTarget();
return basicGetTarget();
}
return super.eGet(featureID, resolve, coreType);
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public void eSet(int featureID, Object newValue) {
switch (featureID) {
case BPELPackage.COMPENSATE_SCOPE__TARGET:
setTarget((Activity) newValue);
return;
}
super.eSet(featureID, newValue);
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public void eUnset(int featureID) {
switch (featureID) {
case BPELPackage.COMPENSATE_SCOPE__TARGET:
setTarget((Activity) null);
return;
}
super.eUnset(featureID);
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
public boolean eIsSet(int featureID) {
switch (featureID) {
case BPELPackage.COMPENSATE_SCOPE__TARGET:
return target != null;
}
return super.eIsSet(featureID);
}
/** (non-Javadoc)
* @see org.eclipse.bpel.model.CompensateScope#setTarget(java.lang.String)
* @customized
*/
public void setTarget(String scopeName) {
// From the spec:
//
// <quote>
// This activity can be used only in the following parts of a business process:
// - In a fault handler of the scope that immediately encloses the scope for which
// compensation is to be performed.
// - In the compensation handler of the scope that immediately encloses the scope
// for which compensation is to be performed.
// </quote>
//
// JM: Modified this method to include a more sensible interpretation of
// "immediately encloses". Rather than a strict parent-child relationship,
// this simply means the closest enclosing Scope.
EObject enclosingScopeOrProcess = null;
// Look for the closest enclosing Scope, or the process, ensuring that we pass a
// Catch, CatchAll or CompensationHandler on the way, as these are
// the only places where a Compensate activity is valid.
EObject container = eContainer();
boolean isValidLocation = false;
while (container != null) {
if (container instanceof Catch || container instanceof CatchAll
|| container instanceof CompensationHandler) {
isValidLocation = true;
} else if (container instanceof Scope
|| container instanceof Process) {
enclosingScopeOrProcess = container;
break;
}
container = container.eContainer();
}
if (enclosingScopeOrProcess == null) {
// Error, silently fail
return;
}
if (!isValidLocation) {
// Error, silently fail
// CH: Allow this and let the validator mark it as an error.
//return;
}
// Find the enclosed scope with the specified scopeName. Since there are
// many places where scope activities may appear, this search
// intentionally starts with a broad set of candidates (the entire
// containment hierarchy) and prunes away the uninteresting parts.
for (TreeIterator i = enclosingScopeOrProcess.eAllContents(); i
.hasNext();) {
EObject next = (EObject) i.next();
if (next instanceof Scope) {
Scope candidate = (Scope) next;
if (scopeName.equals(candidate.getName())) {
setTarget(candidate);
return;
}
// JM: Do not prune the subtree. A scope here which doesn't match
// may contain another scope which does.
//i.prune();
} else if (next instanceof Invoke) {
Invoke candidate = (Invoke) next;
if (scopeName.equals(candidate.getName())) {
setTarget(candidate);
return;
}
i.prune();
}
}
// In the case where a match was not found, install a proxy.
ScopeProxy scopeProxy = new ScopeProxy(eResource().getURI(), scopeName);
setTarget(scopeProxy);
}
} //CompensateScopeImpl