1 files changed, 74 insertions, 0 deletions
diff --git a/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/ReachableDefinition.java b/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/ReachableDefinition.java
new file mode 100644
index 0000000000..2fee73a3a8
--- /dev/null
+++ b/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/ReachableDefinition.java
@@ -0,0 +1,74 @@
+/**
+ *
+ *  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 com.agfa.hap.sdo;
+
+import java.util.Iterator;
+
+
+/**
+ * {@link SnapshotDefinition} that includes everything that is reachable
+ * from the root object.
+ * starting from the root object all child properties are visited
+ * properties that are considered "proxy" by the datamapper are 
+ * visited as proxies and will be serialized as sdo . (ie when using a HibernateDataMapper lazily retrieved objects that are "unitialized"
+ * will be serialized as a sdo proxy) 
+ * @author AMOCZ
+ */
+public class ReachableDefinition implements SnapshotDefinition {
+
+	public <T> void visit(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T root) throws Exception {
+		Type type = mapper.getType(root);
+		visitor.startDataObject(root, type);
+		for (Property p : type.getProperties()) {
+			try {
+				if (p.isMany()) {
+					Iterator<? extends T> it = mapper.getObjects(root, p);
+					while (it.hasNext()) {
+						visitChild(mapper, visitor, root, p, it.next());
+					}
+				} else {
+					visitChild(mapper, visitor, root, p, mapper.getProperty(root, p));
+				}
+			} catch (PropertyNotAvailableException e) {
+				// ok;
+			}
+		}
+		visitor.endDataObject(root, type);
+	}
+	
+	private <T> void visitChild(DataMapper<T> mapper, ObjectPropertyVisitor visitor, T parent, Property property, Object value) throws Exception {		
+		if (value != null) {
+			if (!property.getType().isDataType()) {
+				T child = (T) value;
+				if (mapper.isProxy(child)) {
+					Type childType = mapper.getType(child);
+					Object identity = mapper.getProperty(child, childType.getIdentityProperty());
+					visitor.visitProxyProperty(parent, property, identity);
+					return;
+				}
+			}
+			boolean recurse = visitor.visitProperty(parent, property, value);
+			if (recurse) {
+				visit(mapper, visitor, (T) value);
+			}
+		}
+	}
+	
+}