diff options
Diffstat (limited to 'sca-java-1.x/tags/1.6/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationProvider.java')
-rw-r--r-- | sca-java-1.x/tags/1.6/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationProvider.java | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationProvider.java b/sca-java-1.x/tags/1.6/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationProvider.java new file mode 100644 index 0000000000..08f2fbe679 --- /dev/null +++ b/sca-java-1.x/tags/1.6/modules/implementation-widget-runtime/src/main/java/org/apache/tuscany/sca/implementation/widget/provider/WidgetImplementationProvider.java @@ -0,0 +1,126 @@ +/* + * 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.net.URI; + +import javax.servlet.Servlet; + +import org.apache.tuscany.sca.assembly.ComponentService; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.implementation.widget.WidgetImplementation; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.provider.ImplementationProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; +import org.apache.tuscany.sca.web.javascript.ComponentJavaScriptGenerator; + + +/** + * The model representing a resource implementation in an SCA assembly model. + * + * @version $Rev$ $Date$ + */ +class WidgetImplementationProvider implements ImplementationProvider { + + private RuntimeComponent component; + + private ComponentJavaScriptGenerator javaScriptGenerator; + private ServletHost servletHost; + + private String widgetLocationURL; + private String widgetFolderURL; + private String widgetName; + + private String scriptURI; + + /** + * Constructs a new resource implementation provider. + */ + WidgetImplementationProvider(RuntimeComponent component, + WidgetImplementation implementation, + ComponentJavaScriptGenerator javaScriptGenerator, + ServletHost servletHost) { + this.component = component; + + this.javaScriptGenerator = javaScriptGenerator; + this.servletHost = servletHost; + + widgetLocationURL = implementation.getLocationURL().toString(); + int s = widgetLocationURL.lastIndexOf('/'); + widgetFolderURL = widgetLocationURL.substring(0, s); + widgetName = widgetLocationURL.substring(s +1); + widgetName = widgetName.substring(0, widgetName.lastIndexOf('.')); + } + + public Invoker createInvoker(RuntimeComponentService service, Operation operation) { + WidgetImplementationInvoker invoker = new WidgetImplementationInvoker(component, javaScriptGenerator, widgetName, widgetFolderURL, widgetLocationURL); + return invoker; + } + + public boolean supportsOneWayInvocation() { + return false; + } + + public void start() { + String contextRoot = getContextRoot(); + + // get the ScaDomainScriptServlet, if it doesn't yet exist create one + // this uses removeServletMapping / addServletMapping as there is no getServletMapping facility + scriptURI = URI.create(contextRoot + "/" + this.widgetName + ".js").toString(); + Servlet servlet = servletHost.getServletMapping(scriptURI); + if (servlet == null /*|| servlet instanceof HTTPGetListenerServlet*/) { + WidgetComponentScriptServlet widgetScriptServlet; + widgetScriptServlet = new WidgetComponentScriptServlet(this.component, javaScriptGenerator); + servletHost.addServletMapping(scriptURI, widgetScriptServlet); + } + } + + public void stop() { + // Unregister the component client script Servlet + WidgetComponentScriptServlet widgetScriptServlet = (WidgetComponentScriptServlet) servletHost.getServletMapping(scriptURI); + if (widgetScriptServlet != null) { + // Remove the Servlet mapping + servletHost.removeServletMapping(scriptURI); + } + } + + + /** + * Get the contextRoot considering the HTTP Binding URI when in a embedded environment + * @return + */ + private String getContextRoot() { + String contextRoot = null; + + for(ComponentService service : component.getServices()) { + if("Widget".equals(service.getName())) { + for(org.apache.tuscany.sca.assembly.Binding binding : service.getBindings()) { + if( binding.getClass().getName().contains("HTTPBinding")) { + contextRoot = binding.getURI(); + } + } + } + } + + return contextRoot == null ? "" : contextRoot; + } + +} |