1 files changed, 131 insertions, 0 deletions
diff --git a/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/emf/read/EDataGraphReader.java b/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/emf/read/EDataGraphReader.java
new file mode 100644
index 0000000000..9add9b7677
--- /dev/null
+++ b/das-java/contrib/ldap/das.ldap/src/main/java/org/apache/tuscany/das/ldap/emf/read/EDataGraphReader.java
@@ -0,0 +1,131 @@
+/*
+ *  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.das.ldap.emf.read;
+
+import java.util.Hashtable;
+import java.util.List;
+import java.util.Map;
+
+import javax.naming.NamingException;
+import javax.naming.directory.Attributes;
+import javax.naming.ldap.LdapContext;
+
+import org.apache.directory.shared.ldap.exception.LdapNameNotFoundException;
+import org.apache.tuscany.das.ldap.constants.DASConstants;
+import org.apache.tuscany.das.ldap.util.QualifiedNameNormalizer;
+import org.apache.tuscany.das.ldap.util.SimpleTypeNamespaceQualifier;
+import org.eclipse.emf.ecore.EAttribute;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.EReference;
+import org.eclipse.emf.ecore.EStructuralFeature;
+import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.emf.ecore.sdo.EDataGraph;
+import org.eclipse.emf.ecore.sdo.EDataObject;
+import org.eclipse.emf.ecore.sdo.SDOFactory;
+
+public class EDataGraphReader
+implements DASConstants
+{
+    public static EDataGraph read(
+    		EClass rootDataObjectEClass,
+    		String id,
+    		LdapContext rootContext,
+    		Map<EDataObject, String> dataObjectToRelativeDNCache) 
+    throws NamingException, LdapNameNotFoundException
+    {
+    	EDataGraph eDataGraph                     =
+        		SDOFactory.eINSTANCE.createEDataGraph();
+
+    	String namespaceURI                       =
+            rootDataObjectEClass.getEPackage().
+            getNsURI();
+
+        EAttribute idEAttribute                   =
+    		rootDataObjectEClass.getEIDAttribute();
+
+        String qualifiedIDEAttributeName          =
+            SimpleTypeNamespaceQualifier.
+            qualify( 
+                namespaceURI, 
+                rootDataObjectEClass.getName(), 
+                idEAttribute.getName() );
+        
+    	String normalizedIDEAttributeName         =
+        	QualifiedNameNormalizer.
+        	normalize(qualifiedIDEAttributeName);
+        
+    	String eDataObjectRDN                     = 
+        	normalizedIDEAttributeName + "=" + id;
+        
+        LdapContext eDataObjectContext            =
+        	(LdapContext) 
+        	rootContext.
+        	lookup(eDataObjectRDN);
+        
+        Attributes attributes                     = 
+        	rootContext.
+        	getAttributes(eDataObjectRDN);
+        
+        Map<EDataObject, Map<EStructuralFeature, List<String>>> crossReferenceIDCache                      =
+        	new Hashtable<EDataObject, Map<EStructuralFeature, List<String>>>();
+
+    	EDataObject rootDataObject          =
+    		EDataGraphReaderHelper.
+    		restoreEDataObject(
+    				crossReferenceIDCache,
+    				rootDataObjectEClass, 
+    				namespaceURI, 
+    				attributes);
+
+        String relativeDN                          =
+        	EDataGraphReaderHelper.calculateRelativeDN(
+        			rootContext, 
+        			eDataObjectContext);
+        
+        dataObjectToRelativeDNCache.
+        put(rootDataObject, relativeDN);
+    	
+    	List<EReference> eReferences               =
+    		rootDataObjectEClass.getEAllContainments();
+    	
+    	if (rootDataObjectEClass.getEAllContainments().size() > 0)
+    	{
+    		EDataGraphReaderHelper.
+        	addContainmentDataObjects(
+        			crossReferenceIDCache,
+        			dataObjectToRelativeDNCache,
+        			rootDataObject, 
+        			attributes, 
+        			namespaceURI, 
+        			eDataObjectContext,
+        			rootContext);
+    	}
+
+    	eDataGraph.setERootObject(rootDataObject);
+
+    	Resource resource = eDataGraph.getRootResource();
+    	
+    	EDataGraphReaderHelper.restoreCrossReferences(
+    			crossReferenceIDCache, 
+    			resource);
+
+    	return eDataGraph;
+    }
+}
+\ No newline at end of file