1 files changed, 108 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Map2MapTransformer.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Map2MapTransformer.java
new file mode 100644
index 0000000000..5be7ba1da4
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core-databinding/src/main/java/org/apache/tuscany/sca/core/databinding/transformers/Map2MapTransformer.java
@@ -0,0 +1,108 @@
+/*
+ * 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.sca.core.databinding.transformers;
+
+import java.util.Map;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.databinding.BaseTransformer;
+import org.apache.tuscany.sca.databinding.Mediator;
+import org.apache.tuscany.sca.databinding.PullTransformer;
+import org.apache.tuscany.sca.databinding.TransformationContext;
+import org.apache.tuscany.sca.databinding.TransformationException;
+import org.apache.tuscany.sca.interfacedef.DataType;
+
+/**
+ * This is a special transformer to transform the output from one IDL to the
+ * other one
+ *
+ * @version $Rev$ $Date$
+ */
+public class Map2MapTransformer extends BaseTransformer<Map, Map> implements PullTransformer<Map, Map> {
+
+    private static final String JAVA_MAP = "java:map";
+    protected Mediator mediator;
+
+    public Map2MapTransformer(ExtensionPointRegistry registry) {
+        super();
+        this.mediator = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(Mediator.class);
+    }
+
+    @Override
+    public String getSourceDataBinding() {
+        return JAVA_MAP;
+    }
+
+    @Override
+    public String getTargetDataBinding() {
+        return JAVA_MAP;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.databinding.BaseTransformer#getSourceType()
+     */
+    @Override
+    protected Class<Map> getSourceType() {
+        return Map.class;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.databinding.BaseTransformer#getTargetType()
+     */
+    @Override
+    protected Class<Map> getTargetType() {
+        return Map.class;
+    }
+
+    /**
+     * @see org.apache.tuscany.sca.databinding.Transformer#getWeight()
+     */
+    @Override
+    public int getWeight() {
+        return 10;
+    }
+
+    @SuppressWarnings("unchecked")
+    public Map transform(Map sourceMap, TransformationContext context) {
+        try {
+            if (sourceMap == null) {
+                return null;
+            }
+            DataType<DataType> sourceType = context.getSourceDataType();
+            DataType<DataType> targetType = context.getTargetDataType();
+            Map targetMap = createMap(targetType.getPhysical());
+            for (Object sourceItem : sourceMap.entrySet()) {
+                Map.Entry entry = (Map.Entry)sourceItem;
+                Object targetValue =
+                    mediator.mediate(entry.getValue(), sourceType.getLogical(), targetType.getLogical(), context
+                        .getMetadata());
+                targetMap.put(entry.getKey(), targetValue);
+            }
+            return targetMap;
+        } catch (Exception e) {
+            throw new TransformationException(e);
+        }
+    }
+
+    private Map createMap(Class<?> collectionClass) throws Exception {
+        return (Map)collectionClass.newInstance();
+    }
+
+}