1 files changed, 91 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-comet-runtime/src/main/java/org/apache/tuscany/sca/binding/comet/runtime/javascript/JavascriptGenerator.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-comet-runtime/src/main/java/org/apache/tuscany/sca/binding/comet/runtime/javascript/JavascriptGenerator.java
new file mode 100644
index 0000000000..ecf470da2d
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-comet-runtime/src/main/java/org/apache/tuscany/sca/binding/comet/runtime/javascript/JavascriptGenerator.java
@@ -0,0 +1,91 @@
+/*
+ * 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.comet.runtime.javascript;
+
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.interfacedef.Operation;
+
+/**
+ * Generates javascript proxies for the comet services.
+ */
+public class JavascriptGenerator {
+
+    /**
+     * Namespace for the Tuscany Comet Javascript toolkit.
+     */
+    public static final String JS_NAMESPACE = "SCA";
+
+    /**
+     * Name for the SCA component context.
+     */
+    private static final String COMPONENT_CONTEXT = "this.CometComponentContext";
+
+    /**
+     * Name for the object performing comet specific tasks.
+     */
+    private static final String TUSCANY_COMET = "SCA.TuscanyComet";
+
+    private static StringBuffer javascript = new StringBuffer();
+
+    private JavascriptGenerator() {
+    }
+
+    public static StringBuffer getJavascript() {
+        return JavascriptGenerator.javascript;
+    }
+
+    /**
+     * Generates the javascript proxy for a service.
+     * 
+     * @param service
+     *            the service for which generation is performed
+     */
+    public static void generateServiceProxy(final ComponentService service) {
+        JavascriptGenerator.javascript.append(JavascriptGenerator.COMPONENT_CONTEXT + "." + service.getName()
+                + " = new Object();\n");
+    }
+
+    /**
+     * Generates the method inside the service proxy for the specified
+     * operation.
+     * 
+     * @param service
+     *            the service containing the operation
+     * @param operation
+     *            the operation
+     */
+    public static void generateMethodProxy(final ComponentService service, final Operation operation) {
+        JavascriptGenerator.javascript.append(JavascriptGenerator.COMPONENT_CONTEXT + "." + service.getName() + "."
+                + operation.getName() + " = function(");
+        for (int i = 0; i < operation.getInputType().getLogical().size(); i++) {
+            JavascriptGenerator.javascript.append("p" + i + ", ");
+        }
+        JavascriptGenerator.javascript.append("callbackMethod) {\n");
+        // send method argumets as JSON array
+        JavascriptGenerator.javascript.append("  var params = [];\n");
+        for (int i = 0; i < operation.getInputType().getLogical().size(); i++) {
+            JavascriptGenerator.javascript.append("  params.push(p" + i + ");\n");
+        }
+        JavascriptGenerator.javascript.append("  " + JavascriptGenerator.TUSCANY_COMET + ".callAsync('"
+                + service.getName() + "/" + operation.getName() + "', $.toJSON(params), callbackMethod);\n");
+        JavascriptGenerator.javascript.append("}\n");
+    }
+
+}