1 files changed, 106 insertions, 0 deletions
diff --git a/branches/sca-java-0.90/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java b/branches/sca-java-0.90/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java
new file mode 100644
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+++ b/branches/sca-java-0.90/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java
@@ -0,0 +1,106 @@
+/*
+ * 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 org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding;
+import org.apache.tuscany.sca.binding.jsonrpc.server.JSONRPCEntryPointServlet;
+import org.apache.tuscany.sca.binding.jsonrpc.server.JSONRPCScriptServlet;
+import org.apache.tuscany.sca.http.ServletHost;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+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.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JSONRPCServiceBindingProvider implements ServiceBindingProvider {
+
+    private static int servletRegistrationCount = 0;
+    private RuntimeComponent component;
+    private RuntimeComponentService service;
+    private JSONRPCBinding binding;
+    private ServletHost servletHost;
+
+    // path to the JSONRPC javascript servlet
+    public static final String SCRIPT_GETTER_SERVICE_MAPPING = "/SCA/scripts";
+
+    public static final String JSONRPC_SERVICE_MAPPING_PREFIX = "/";
+
+    public JSONRPCServiceBindingProvider(RuntimeComponent component,
+                                         RuntimeComponentService service,
+                                         JSONRPCBinding binding,
+                                         ServletHost servletHost) {
+        this.component = component;
+        this.service = service;
+        this.binding = binding;
+        this.servletHost = servletHost;
+    }
+
+    public InterfaceContract getBindingInterfaceContract() {
+        return service.getInterfaceContract();
+    }
+
+    public void start() {
+        JSONRPCEntryPointServlet servlet;
+
+        Class<?> aClass = getTargetJavaClass(service.getInterfaceContract().getInterface());
+        Object instance = component.createSelfReference(aClass).getService();
+
+        servlet = new JSONRPCEntryPointServlet(binding.getName(), aClass, instance);
+
+        // register the servlet based on the service name
+        servletHost.addServletMapping(JSONRPC_SERVICE_MAPPING_PREFIX + binding.getName(), servlet);
+
+        // if the script getter servlet is not already registered then register
+        // it
+        if (servletRegistrationCount == 0) {
+            servletHost.addServletMapping(SCRIPT_GETTER_SERVICE_MAPPING, new JSONRPCScriptServlet());
+        }
+
+        // increase the registered servlet count
+        servletRegistrationCount++;
+    }
+
+    public void stop() {
+
+        // Unregister from the servlet mapping
+        servletHost.removeServletMapping(JSONRPC_SERVICE_MAPPING_PREFIX + binding.getName());
+        servletRegistrationCount--;
+        // if we unregistered the last JSONRPC servlet, then unreister the
+        // script servlet
+        if (servletRegistrationCount == 0) {
+            servletHost.removeServletMapping(SCRIPT_GETTER_SERVICE_MAPPING);
+        }
+    }
+
+    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();
+    }
+
+}