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Diffstat (limited to 'sdo-java/branches/sdo-java-M2/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/CrossScopeCopyHelperImpl.java')
| -rw-r--r-- | sdo-java/branches/sdo-java-M2/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/CrossScopeCopyHelperImpl.java | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/sdo-java/branches/sdo-java-M2/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/CrossScopeCopyHelperImpl.java b/sdo-java/branches/sdo-java-M2/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/CrossScopeCopyHelperImpl.java new file mode 100644 index 0000000000..b7a5534800 --- /dev/null +++ b/sdo-java/branches/sdo-java-M2/sdo/impl/src/main/java/org/apache/tuscany/sdo/helper/CrossScopeCopyHelperImpl.java @@ -0,0 +1,255 @@ +/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 java.util.Iterator;
+import java.util.Map;
+
+import org.eclipse.emf.ecore.EAttribute;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.EReference;
+import org.eclipse.emf.ecore.EStructuralFeature;
+import org.eclipse.emf.ecore.util.EcoreUtil;
+import org.eclipse.emf.ecore.util.FeatureMap;
+import org.eclipse.emf.ecore.util.FeatureMapUtil;
+import org.eclipse.emf.ecore.util.InternalEList;
+import org.eclipse.emf.ecore.util.EcoreUtil.Copier;
+
+import commonj.sdo.DataObject;
+import commonj.sdo.Type;
+import commonj.sdo.helper.CopyHelper;
+import commonj.sdo.helper.TypeHelper;
+
+/**
+ * A CopyHelper implementation that creates the copy objects in a specific metadata scope.
+ * The target scope must contain a compatible version of the Types needed to create the copy objects.
+ */
+public class CrossScopeCopyHelperImpl implements CopyHelper
+{
+ protected TypeHelper scope;
+
+ public CrossScopeCopyHelperImpl(TypeHelper targetScope)
+ {
+ scope = targetScope;
+ }
+
+ public DataObject copyShallow(DataObject dataObject)
+ {
+ Copier copier = new CrossScopeCopier()
+ {
+ protected void copyContainment(EReference eReference, EObject eObject, EObject copyEObject)
+ {
+ }
+ protected void copyAttribute(EAttribute eAttribute, EObject eObject, EObject copyEObject)
+ {
+ if (eObject.eIsSet(eAttribute) && !FeatureMapUtil.isFeatureMap(eAttribute))
+ {
+ super.copyAttribute(eAttribute,eObject,copyEObject);
+ }
+ }
+ };
+ EObject result = copier.copy((EObject)dataObject);
+ copier.copyReferences();
+ return (DataObject)result;
+ }
+
+ public DataObject copy(DataObject dataObject)
+ {
+ Copier copier = new CrossScopeCopier();
+ DataObject result = (DataObject)copier.copy((EObject)dataObject);
+ copier.copyReferences();
+ return (DataObject)result;
+ }
+
+ protected class CrossScopeCopier extends EcoreUtil.Copier
+ {
+ protected boolean useOriginalReferences = false;
+
+ protected EClass getTarget(EClass eClass)
+ {
+ EClass target = (EClass)get(eClass);
+ if (target == null)
+ {
+ Type type = (Type)eClass;
+ target = (EClass)scope.getType(type.getURI(), type.getName());
+ }
+ return target;
+ }
+
+ protected EStructuralFeature getTarget(EStructuralFeature eStructuralFeature)
+ {
+ EClass eClass = getTarget(eStructuralFeature.getEContainingClass());
+ EStructuralFeature targetEf = eClass.getEStructuralFeature(eStructuralFeature.getName());
+ return targetEf;
+ }
+
+ /**
+ * This Method WILL BE REMOVED when EMF 3.0 is available
+ */
+ public void copyReferences()
+ {
+ for (Iterator i = entrySet().iterator(); i.hasNext();)
+ {
+ Map.Entry entry = (Map.Entry)i.next();
+ EObject eObject = (EObject)entry.getKey();
+ EObject copyEObject = (EObject)entry.getValue();
+ EClass eClass = eObject.eClass();
+ for (int j = 0, size = eClass.getFeatureCount(); j < size; ++j)
+ {
+ EStructuralFeature eStructuralFeature = eClass.getEStructuralFeature(j);
+ if (eStructuralFeature.isChangeable() && !eStructuralFeature.isDerived())
+ {
+ if (eStructuralFeature instanceof EReference)
+ {
+ EReference eReference = (EReference)eStructuralFeature;
+ if (!eReference.isContainment() && !eReference.isContainer())
+ {
+ copyReference(eReference, eObject, copyEObject);
+ }
+ }
+ else if (FeatureMapUtil.isFeatureMap(eStructuralFeature))
+ {
+ FeatureMap featureMap = (FeatureMap)eObject.eGet(eStructuralFeature);
+ FeatureMap copyFeatureMap = (FeatureMap)copyEObject.eGet(getTarget(eStructuralFeature));
+ int copyFeatureMapSize = copyFeatureMap.size();
+ for (int k = 0, featureMapSize = featureMap.size(); k < featureMapSize; ++k)
+ {
+ EStructuralFeature feature = featureMap.getEStructuralFeature(k);
+ if (feature instanceof EReference)
+ {
+ Object referencedEObject = featureMap.getValue(k);
+ Object copyReferencedEObject = get(referencedEObject);
+ if (copyReferencedEObject == null && referencedEObject != null)
+ {
+ EReference reference = (EReference)feature;
+ if (!useOriginalReferences || reference.isContainment() || reference.getEOpposite() != null)
+ {
+ continue;
+ }
+ copyReferencedEObject = referencedEObject;
+ }
+ // If we can't add it, it must aleady be in the list so find it and move it to the end.
+ //
+ if (!copyFeatureMap.add(feature, copyReferencedEObject))
+ {
+ for (int l = 0; l < copyFeatureMapSize; ++l)
+ {
+ if (copyFeatureMap.getEStructuralFeature(l) == feature && copyFeatureMap.getValue(l) == copyReferencedEObject)
+ {
+ copyFeatureMap.move(copyFeatureMap.size() - 1, l);
+ --copyFeatureMapSize;
+ break;
+ }
+ }
+ }
+ }
+ else
+ {
+ copyFeatureMap.add(featureMap.get(k));
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * This Method WILL BE REMOVED when EMF 3.0 is available
+ */
+ protected void copyReference(EReference eReference, EObject eObject, EObject copyEObject)
+ {
+ if (eObject.eIsSet(eReference))
+ {
+ if (eReference.isMany())
+ {
+ InternalEList source = (InternalEList)eObject.eGet(eReference);
+ InternalEList target = (InternalEList)copyEObject.eGet(getTarget(eReference));
+ if (source.isEmpty())
+ {
+ target.clear();
+ }
+ else
+ {
+ boolean isBidirectional = eReference.getEOpposite() != null;
+ int index = 0;
+ for (Iterator k = resolveProxies ? source.iterator() : source.basicIterator(); k.hasNext();)
+ {
+ Object referencedEObject = k.next();
+ Object copyReferencedEObject = get(referencedEObject);
+ if (copyReferencedEObject == null)
+ {
+ if (useOriginalReferences && !isBidirectional)
+ {
+ target.addUnique(index, referencedEObject);
+ ++index;
+ }
+ }
+ else
+ {
+ if (isBidirectional)
+ {
+ int position = target.indexOf(copyReferencedEObject);
+ if (position == -1)
+ {
+ target.addUnique(index, copyReferencedEObject);
+ }
+ else if (index != position)
+ {
+ target.move(index, copyReferencedEObject);
+ }
+ }
+ else
+ {
+ target.addUnique(index, copyReferencedEObject);
+ }
+ ++index;
+ }
+ }
+ }
+ }
+ else
+ {
+ Object referencedEObject = eObject.eGet(eReference, resolveProxies);
+ if (referencedEObject == null)
+ {
+ copyEObject.eSet(getTarget(eReference), null);
+ }
+ else
+ {
+ Object copyReferencedEObject = get(referencedEObject);
+ if (copyReferencedEObject == null)
+ {
+ if (useOriginalReferences && eReference.getEOpposite() == null)
+ {
+ copyEObject.eSet(getTarget(eReference), referencedEObject);
+ }
+ }
+ else
+ {
+ copyEObject.eSet(getTarget(eReference), copyReferencedEObject);
+ }
+ }
+ }
+ }
+ }
+ }
+}
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