1 files changed, 83 insertions, 0 deletions
diff --git a/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/DataAccessService.java b/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/DataAccessService.java
new file mode 100644
index 0000000000..26f86cb1e9
--- /dev/null
+++ b/sandbox/kgoodson/mappingFramework/sdo-snapshot/src/main/java/com/agfa/hap/sdo/DataAccessService.java
@@ -0,0 +1,83 @@
+/**
+ *
+ *  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.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+
+import com.agfa.hap.sdo.implementation.SnapshotImplementation;
+import com.agfa.hap.sdo.mapper.PartialDataObjectMapper;
+
+public class DataAccessService {
+	private final static PartialDataObjectMapper MAPPER = new PartialDataObjectMapper();
+    public static Snapshot createSnapShot(SnapshotDefinition def, PartialDataObject root) {
+    	return createSnapShot(MAPPER, def, root);
+    }
+    
+    public static <T> Snapshot createSnapShot(DataMapper<T> mapper, SnapshotDefinition def, T root) {
+    	List<T> roots = new ArrayList<T>(1);
+    	roots.add(root);
+        return new SnapshotImplementation(mapper, def, roots);
+    }
+
+    @SuppressWarnings("unchecked")
+	public static <T> Snapshot createMultiSnapShot(SnapshotDefinition def, Collection<? extends T> root) {
+        return createMultiSnapShot((DataMapper<T>) MAPPER, def, root);
+    }
+
+    public static <T> Snapshot createMultiSnapShot(DataMapper<T> mapper, SnapshotDefinition def, Collection<? extends T> root) {
+        return new SnapshotImplementation(mapper, def, root);
+    }
+
+	public static PartialDataObject getRootObject(Snapshot s) {
+		return getRootObject(MAPPER, s);
+	}
+
+	/**
+	 * @return The first and only root object of the snapshot. This is always a different
+	 * instance than the object that was used to create the snapshot.
+	 * @throws RuntimeException if there are no root objects or if there is more than one root object 
+	 */
+	public static <T> T getRootObject(DataMapper<T> mapper, Snapshot s) {
+		List<T> roots = getRootObjects(mapper, s);
+		if (roots.isEmpty()){
+			throw new RuntimeException("snapshot is empty");
+		}
+		if (roots.size() > 1){
+			throw new RuntimeException("more than 1 rootobject:" + roots.size());
+		}
+		return roots.get(0);
+	}
+	
+	public static List<PartialDataObject> getRootObjects(Snapshot s) {
+		return getRootObjects(MAPPER, s);
+	}
+
+	public static <T> List<T> getRootObjects(DataMapper<T> mapper, Snapshot s) {
+		return s.extract(mapper);		
+	}
+	
+	public static <T> Iterator<T> rootObjectsIterator(DataMapper<T> mapper, Snapshot s) {
+		return getRootObjects(mapper, s).iterator();		
+	}
+
+}