Initial implementation for JSON wire format for REST binding

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@937850 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 102 insertions, 0 deletions

diff --git a/sca-java-2.x/trunk/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/wireformat/json/provider/JSONWireFormatServiceProvider.java b/sca-java-2.x/trunk/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/wireformat/json/provider/JSONWireFormatServiceProvider.java
new file mode 100644
index 0000000000..b4d59bd5ad
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/wireformat/json/provider/JSONWireFormatServiceProvider.java
@@ -0,0 +1,102 @@
+/*
+ * 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.binding.rest.wireformat.json.provider;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.binding.rest.wireformat.json.JSONWireFormat;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding;
+import org.apache.tuscany.sca.databinding.json.JSONDataBinding;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Phase;
+import org.apache.tuscany.sca.provider.WireFormatProvider;
+import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
+
+public class JSONWireFormatServiceProvider implements WireFormatProvider {
+    private ExtensionPointRegistry extensionPoints;
+    private RuntimeEndpoint endpoint;
+    
+    private InterfaceContract serviceContract;
+    private Binding binding;
+    
+    public JSONWireFormatServiceProvider(ExtensionPointRegistry extensionPoints, RuntimeEndpoint endpoint) {
+        this.extensionPoints = extensionPoints;
+        this.endpoint = endpoint;
+        this.binding = endpoint.getBinding();
+        
+    }
+    
+    public InterfaceContract configureWireFormatInterfaceContract(InterfaceContract interfaceContract) {
+        serviceContract = interfaceContract;
+        
+        //set JSON databinding
+        setDataBinding(serviceContract.getInterface());
+        
+        //make JSON databinding default
+        serviceContract.getInterface().resetDataBinding(JSONDataBinding.NAME);
+        
+        return serviceContract;
+    }
+
+    public Interceptor createInterceptor() {
+        if(binding.getRequestWireFormat() != null && binding.getRequestWireFormat() instanceof JSONWireFormat) {
+            return new JSONWireFormatInterceptor(extensionPoints, endpoint);
+        }
+        return null;
+    }
+
+    public String getPhase() {
+        return Phase.SERVICE_BINDING_WIREFORMAT;
+    }
+
+    
+    /**
+     * Utility method to reset data binding for the interface contract
+     * @param interfaze
+     */
+    @SuppressWarnings({"deprecation", "unchecked"})
+    private void setDataBinding(Interface interfaze) {
+        List<Operation> operations = interfaze.getOperations();
+        for (Operation operation : operations) {
+            operation.setDataBinding(JSONDataBinding.NAME);
+            DataType<List<DataType>> inputType = operation.getInputType();
+            if (inputType != null) {
+                List<DataType> logical = inputType.getLogical();
+                for (DataType inArg : logical) {
+                    if (!SimpleJavaDataBinding.NAME.equals(inArg.getDataBinding())) {
+                        inArg.setDataBinding(JSONDataBinding.NAME);
+                    } 
+                }
+            }
+            DataType outputType = operation.getOutputType();
+            if (outputType != null) {
+                if (!SimpleJavaDataBinding.NAME.equals(outputType.getDataBinding())) {
+                    outputType.setDataBinding(JSONDataBinding.NAME);
+                }
+            }
+        }
+    }
+}