1 files changed, 189 insertions, 0 deletions
diff --git a/tags/java/sca/1.5.1/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java b/tags/java/sca/1.5.1/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java
new file mode 100644
index 0000000000..909bd7bc19
--- /dev/null
+++ b/tags/java/sca/1.5.1/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java
@@ -0,0 +1,189 @@
+/*
+ * 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.jsonrpc.provider;
+
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding;
+import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding;
+import org.apache.tuscany.sca.databinding.json.JSONDataBinding;
+import org.apache.tuscany.sca.host.http.ServletHost;
+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.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+
+/**
+ * Implementation of the JSONRPC Binding Provider for Services
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JSONRPCServiceBindingProvider implements ServiceBindingProvider {
+    
+    // Path to the scaDomain.js script 
+    // Note: this is the same as the Ajax binding to keep the client code
+    //       the same for clients using either the ajax or jsonrpc binding
+    private static final String SCA_DOMAIN_SCRIPT = "/SCADomain/scaDomain.js";
+    
+    private MessageFactory messageFactory;
+    
+    private RuntimeComponent component;
+    private RuntimeComponentService service;
+    private InterfaceContract serviceContract;
+    private JSONRPCBinding binding;
+    private ServletHost servletHost;
+    private List<String> servletMappings = new ArrayList<String>();
+    private String domainScriptMapping;
+
+    public JSONRPCServiceBindingProvider(RuntimeComponent component,
+                                         RuntimeComponentService service,
+                                         JSONRPCBinding binding,
+                                         MessageFactory messageFactory,
+                                         ServletHost servletHost) {
+        this.component = component;
+        this.service = service;
+        this.binding = binding;
+        this.messageFactory = messageFactory;
+        this.servletHost = servletHost;
+        
+        //clone the service contract to avoid databinding issues
+        try {
+            this.serviceContract = (InterfaceContract)service.getInterfaceContract().clone();
+        } catch(CloneNotSupportedException e) {
+            this.serviceContract = service.getInterfaceContract();
+        }
+        
+        setDataBinding(serviceContract.getInterface());
+    }
+
+    public InterfaceContract getBindingInterfaceContract() {
+        return service.getInterfaceContract();
+    }
+
+    public boolean supportsOneWayInvocation() {
+        return false;
+    }
+    
+    public void start() {
+        // Set default databinding to json
+        serviceContract.getInterface().resetDataBinding(JSONDataBinding.NAME);
+
+        // Determine the service business interface
+        Class<?> serviceInterface = getTargetJavaClass(serviceContract.getInterface());
+
+        // Create a Java proxy to the target service
+		Object proxy = component.getComponentContext().createSelfReference(serviceInterface, service).getService();
+
+        // Create and register a Servlet for this service
+        JSONRPCServiceServlet serviceServlet =
+            new JSONRPCServiceServlet(messageFactory, binding, service, serviceContract, serviceInterface, proxy);
+        String mapping = binding.getURI();
+        if (!mapping.endsWith("/")) {
+            mapping += "/";
+        }
+        if (!mapping.endsWith("*")) {
+            mapping += "*";
+        }
+                
+        servletHost.addServletMapping(mapping, serviceServlet);
+        servletMappings.add(mapping);
+        servletHost.addServletMapping(binding.getURI(), serviceServlet);
+        servletMappings.add(binding.getURI());
+        
+        // Register service to scaDomain.js
+        int port;
+        URI uri = URI.create(servletHost.getURLMapping(binding.getURI()).toString());
+        port = uri.getPort();
+        if (port == -1) {
+            port = servletHost.getDefaultPort();
+        }
+        
+        // get the ScaDomainScriptServlet, if it doesn't yet exist create one
+        // this uses removeServletMapping / addServletMapping as there is no getServletMapping facility
+        domainScriptMapping = URI.create("http://localhost:" + port + SCA_DOMAIN_SCRIPT).toString();
+        ScaDomainScriptServlet scaDomainServlet =
+            (ScaDomainScriptServlet)servletHost.getServletMapping(domainScriptMapping);
+        if (scaDomainServlet == null) {
+            scaDomainServlet = new ScaDomainScriptServlet();
+            servletHost.addServletMapping(domainScriptMapping, scaDomainServlet);
+        }
+
+        // Add this service to the SCA Domain Script Servlet
+        scaDomainServlet.addService(binding.getName());
+    }
+
+    public void stop() {
+
+        // Remove the Servlet mappings we've added
+        for (String mapping: servletMappings) {
+            servletHost.removeServletMapping(mapping);
+        }
+
+        // Unregister the service from the SCA Domain Script Servlet
+        ScaDomainScriptServlet scaDomainServlet = (ScaDomainScriptServlet) servletHost.getServletMapping(domainScriptMapping);
+        if (scaDomainServlet != null) {
+            scaDomainServlet.removeService(binding.getName());
+
+            // Remove the Servlet if there's no more registered services
+            if (scaDomainServlet.getServiceNames().isEmpty()) {
+                servletHost.removeServletMapping(domainScriptMapping);
+            }
+        }
+
+    }
+
+    private Class<?> getTargetJavaClass(Interface targetInterface) {
+        // TODO: right now assume that the target is always a Java
+        // Implementation. Need to figure out how to generate Java
+        // Interface in cases where the target is not a Java Implementation
+        return ((JavaInterface)targetInterface).getJavaClass();
+    }
+    
+    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);
+                }
+            }
+        }
+    }
+
+
+}