1 files changed, 113 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-websocket/src/main/java/org/apache/tuscany/sca/binding/websocket/runtime/JavascriptGenerator.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-websocket/src/main/java/org/apache/tuscany/sca/binding/websocket/runtime/JavascriptGenerator.java
new file mode 100644
index 0000000000..21b953151b
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-websocket/src/main/java/org/apache/tuscany/sca/binding/websocket/runtime/JavascriptGenerator.java
@@ -0,0 +1,113 @@
+/*
+ * 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.    
+ */
+
+/*
+ * 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.websocket.runtime;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.interfacedef.Operation;
+
+/**
+ * Generates javascript service proxies using the websocket API. This enables
+ * simulating SCA on the client side javascript. This is a stateful singleton.
+ */
+public class JavascriptGenerator {
+
+    private final static String CONTEXT = "this.WebsocketComponentContext";
+    private static final String LF = "\n";
+    private static StringBuilder builder = new StringBuilder();
+
+    /**
+     * Generate javascript code for one service and all it's operations. Add
+     * this to the state of the generator.
+     */
+    public static void generateServiceProxy(String component, String service, List<Operation> operations, int port) {
+        if (builder.length() == 0) {
+            builder.append(CONTEXT).append("={};").append(LF);
+        }
+        builder.append("if(!" + CONTEXT + "." + component + ")" + CONTEXT + "." + component + "={};").append(LF);
+        builder.append(CONTEXT + "." + component + "." + service + "={};").append(LF);
+        for (Operation operation : operations) {
+            builder.append(
+                    CONTEXT + "." + component + "." + service + "." + operation.getName() + "="
+                            + generateFunctionHeader(operation)).append(LF);
+            builder.append(generateFunctionContent(port, component, service, operation)).append(LF);
+            builder.append("};").append(LF);
+        }
+    }
+
+    private static String generateFunctionHeader(Operation operation) {
+        String header = "function(";
+        for (int i = 0; i < operation.getInputType().getLogical().size(); i++) {
+            if (i > 0)
+                header += ",";
+            header += "p" + i;
+        }
+        header += ") {";
+        return header;
+    }
+
+    private static String generateFunctionContent(int port, String component, String service, Operation operation) {
+        String content = "sendMessage(" + port + ",'" + component + "." + service + "." + operation.getName() + "',[";
+        for (int i = 0; i < operation.getInputType().getLogical().size(); i++) {
+            if (i > 0)
+                content += ",";
+            content += "p" + i;
+        }
+        content += "]);";
+        return content;
+    }
+
+    /**
+     * Get the state of the generator.
+     */
+    public static String getServiceProxies() {
+        return builder.toString();
+    }
+
+    /**
+     * Reset the state of the generator.
+     */
+    public static void clear() {
+        builder.setLength(0);
+    }
+
+    private JavascriptGenerator() {
+    }
+
+}