diff options
Diffstat (limited to 'sandbox/event/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationInvoker.java')
| -rw-r--r-- | sandbox/event/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationInvoker.java | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/sandbox/event/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationInvoker.java b/sandbox/event/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationInvoker.java deleted file mode 100644 index 5438247af6..0000000000 --- a/sandbox/event/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationInvoker.java +++ /dev/null @@ -1,248 +0,0 @@ -/* - * 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.implementation.widget.provider; - -import java.io.ByteArrayInputStream; -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.io.InputStream; -import java.io.PrintWriter; -import java.net.MalformedURLException; -import java.net.URI; -import java.net.URISyntaxException; -import java.net.URL; -import java.util.HashMap; -import java.util.Map; - -import org.apache.tuscany.sca.assembly.Binding; -import org.apache.tuscany.sca.assembly.ComponentProperty; -import org.apache.tuscany.sca.assembly.ComponentReference; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.invocation.Message; -import org.apache.tuscany.sca.runtime.RuntimeComponent; -import org.w3c.dom.Document; -import org.w3c.dom.Element; - - -/** - * Implements an invoker for resource component implementations. - * - * @version $Rev$ $Date$ - */ -class WidgetImplementationInvoker implements Invoker { - private RuntimeComponent component; - private String widgetName; - private String widgetFolderURL; - private String widgetLocationURL; - - WidgetImplementationInvoker(RuntimeComponent component, String widgetName, String widgetFolderURL, String widgetLocationURL) { - this.component = component; - this.widgetName = widgetName + ".js"; - this.widgetFolderURL = widgetFolderURL; - this.widgetLocationURL = widgetLocationURL; - } - - public Message invoke(Message msg) { - - // Get the resource id from the request message - String id = (String)((Object[])msg.getBody())[0]; - try { - - if (id.length() == 0) { - - // Return an input stream for the widget resource - URL url = new URL(widgetLocationURL); - InputStream is = url.openStream(); - msg.setBody(is); - - } else if (id.equals(widgetName)) { - - // Generate JavaScript header for use in the Widget - InputStream is = generateWidgetCode(); - msg.setBody(is); - - } else { - - // Return an input stream for a resource inside the - // widget folder - URL url = new URL(widgetFolderURL +'/' + id); - InputStream is = url.openStream(); - msg.setBody(is); - } - } catch (MalformedURLException e) { - - // Report exception as a fault - msg.setFaultBody(e); - - } catch (URISyntaxException e) { - - // Report exception as a fault - msg.setFaultBody(e); - - } catch (IOException e) { - - // Report exception as a fault - msg.setFaultBody(e); - } - return msg; - } - - /** - * This helper class concatenates the necessary JavaScript client code into a - * single JavaScript per component - */ - private InputStream generateWidgetCode() throws IOException, URISyntaxException { - ByteArrayOutputStream bos = new ByteArrayOutputStream(); - PrintWriter pw = new PrintWriter(bos); - - pw.println(); - pw.println("/* Apache Tuscany SCA Widget header */"); - pw.println(); - - Map<String, Boolean> bindingClientProcessed = new HashMap<String, Boolean>(); - - for(ComponentReference reference : component.getReferences()) { - for(Binding binding : reference.getBindings()) { - String bindingProxyName = WidgetProxyHelper.getJavaScriptProxyFile(binding.getClass().getName()); - //check if binding client code was already processed and inject to the generated script - Boolean processedFlag = bindingClientProcessed.get(bindingProxyName); - if( processedFlag == null || processedFlag.booleanValue() == false) { - if(bindingProxyName != null) { - generateJavaScriptBindingProxy(pw,bindingProxyName); - bindingClientProcessed.put(bindingProxyName, Boolean.TRUE); - } - } - } - } - - //process properties - generateJavaScriptPropertyFunction(pw); - - //process references - generateJavaScriptReferenceFunction(pw); - - - pw.println(); - pw.println("/** End of Apache Tuscany SCA Widget */"); - pw.println(); - pw.flush(); - pw.close(); - - return new ByteArrayInputStream(bos.toByteArray()); - } - - /** - * Retrieve the binding proxy based on the bind name - * and embedded the JavaScript into this js - */ - private void generateJavaScriptBindingProxy(PrintWriter pw, String bindingProxyName) throws IOException { - //FIXME: Handle the case where the JavaScript binding client is not found - InputStream is = getClass().getClassLoader().getResourceAsStream(bindingProxyName); - if (is != null) { - int i; - while ((i = is.read()) != -1) { - pw.write(i); - } - } - - pw.println(); - pw.println(); - } - - /** - * Generate JavaScript code to inject SCA Properties - * @param pw - * @throws IOException - */ - private void generateJavaScriptPropertyFunction(PrintWriter pw) throws IOException { - - pw.println("var propertyMap = new String();"); - for(ComponentProperty property : component.getProperties()) { - String propertyName = property.getName(); - - pw.println("propertyMap." + propertyName + " = \"" + getPropertyValue(property) + "\""); - } - - pw.println("function Property(name) {"); - pw.println(" return propertyMap[name];"); - pw.println("}"); - } - - /** - * Convert property value to String - * @param property - * @return - */ - private String getPropertyValue(ComponentProperty property) { - Document doc = (Document)property.getValue(); - Element rootElement = doc.getDocumentElement(); - - String value = null; - - //FIXME : Provide support for isMany and other property types - - if (rootElement.getChildNodes().getLength() > 0) { - value = rootElement.getChildNodes().item(0).getTextContent(); - } - - return value; - } - - /** - * Generate JavaScript code to inject SCA References - * @param pw - * @throws IOException - */ - private void generateJavaScriptReferenceFunction (PrintWriter pw) throws IOException, URISyntaxException { - - pw.println("var referenceMap = new Object();"); - for(ComponentReference reference : component.getReferences()) { - String referenceName = reference.getName(); - Binding binding = reference.getBindings().get(0); - if (binding != null) { - - String proxyClient = WidgetProxyHelper.getJavaScriptProxyClient(binding.getClass().getName()); - if(proxyClient != null) { - - // Generate the JavaScript proxy configuration code - // Proxies are configured with the target URI path, as at this point we shouldn't - // be generating proxies that communicate with other hosts (if a proxy needs to - // communicate with another host it should be generated on and served by - // that particular host) - URI targetURI = URI.create(binding.getURI()); - String targetPath = targetURI.getPath(); - - if(proxyClient.equals("JSONRpcClient")) { - //FIXME Proxies should follow the same pattern, saving us from having to test - // for JSONRpc here - pw.println("referenceMap." + referenceName + " = new " + proxyClient + "(\"" + targetPath + "\").Service;"); - } else { - pw.println("referenceMap." + referenceName + " = new " + proxyClient + "(\"" + targetPath + "\");"); - } - } - } - } - - pw.println("function Reference(name) {"); - pw.println(" return referenceMap[name];"); - pw.println("}"); - } - -} |