1 files changed, 67 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-stable-20060304/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/EqualityHelperImpl.java b/sca-java-1.x/tags/java-stable-20060304/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/EqualityHelperImpl.java
new file mode 100644
index 0000000000..a31066d598
--- /dev/null
+++ b/sca-java-1.x/tags/java-stable-20060304/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/EqualityHelperImpl.java
@@ -0,0 +1,67 @@
+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.tuscany.sdo.helper;
+
+
+import org.eclipse.emf.ecore.EAttribute;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.EStructuralFeature;
+import org.eclipse.emf.ecore.util.EcoreUtil;
+
+import commonj.sdo.DataObject;
+import commonj.sdo.helper.EqualityHelper;
+
+
+/**
+ * A helper for comparing DataObjects.
+ */
+public class EqualityHelperImpl implements EqualityHelper
+{
+  public boolean equalShallow(DataObject dataObject1, DataObject dataObject2)
+  {
+    EcoreUtil.EqualityHelper equalityHelper = new EcoreUtil.EqualityHelper()
+      {
+        protected boolean haveEqualFeature(EObject eObject1, EObject eObject2, EStructuralFeature feature)
+        {
+          if (feature instanceof EAttribute)
+          {
+              boolean eIsSet = eObject1.eIsSet(feature);
+              if (eIsSet != eObject2.eIsSet(feature) || !haveEqualAttribute(eObject1, eObject2, (EAttribute)feature))
+              {
+                  return false;
+              }
+          }
+          return true;
+        }
+
+        protected boolean equalFeatureMapValues(Object value1, Object value2, EStructuralFeature feature)
+        {
+          if (feature instanceof EAttribute)
+          {
+            return value1 == null ? value2 == null : value1.equals(value2);
+          }
+          return true;
+        }
+      };
+    return equalityHelper.equals((EObject)dataObject1, (EObject)dataObject2);
+  }
+
+  public boolean equal(DataObject dataObject1, DataObject dataObject2)
+  {
+    return EcoreUtil.equals((EObject)dataObject1, (EObject)dataObject2);
+  }
+}