diff options
Diffstat (limited to 'plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/cdo/transaction/CDOUndoDetector.java')
| -rw-r--r-- | plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/cdo/transaction/CDOUndoDetector.java | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/cdo/transaction/CDOUndoDetector.java b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/cdo/transaction/CDOUndoDetector.java new file mode 100644 index 0000000000..93ce378265 --- /dev/null +++ b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/cdo/transaction/CDOUndoDetector.java @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2014 Eike Stepper (Berlin, Germany) and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Eike Stepper - initial API and implementation + */ +package org.eclipse.emf.cdo.transaction; + +import org.eclipse.emf.cdo.common.revision.CDORevision; +import org.eclipse.emf.cdo.common.revision.delta.CDOFeatureDelta; + +import org.eclipse.emf.internal.cdo.transaction.CDOUndoDetectorImpl; + +import org.eclipse.emf.ecore.EObject; + +/** + * A strategy used to detect whether the feature of an {@link EObject object} has the original (clean) value after a number of modifications. + * + * @see CDOTransaction.Options#setUndoDetector(CDOUndoDetector) + * @author Eike Stepper + * @since 4.3 + */ +public interface CDOUndoDetector +{ + public static final CDOUndoDetector NO_FEATURES = new CDOUndoDetectorImpl.NoFeatures(); + + public static final CDOUndoDetector SINGLE_VALUED_FEATURES = new CDOUndoDetectorImpl.SingleValuedFeatures(); + + public static final CDOUndoDetector ALL_FEATURES = new CDOUndoDetectorImpl(); + + public boolean detectUndo(CDOTransaction transaction, CDORevision cleanRevision, CDORevision revision, + CDOFeatureDelta featureDelta); +} |