diff options
Diffstat (limited to 'sandbox/ant/ajax/binding.ajax/src/main')
9 files changed, 954 insertions, 0 deletions
diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AbstractBinding.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AbstractBinding.java new file mode 100644 index 0000000000..c5388017fc --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AbstractBinding.java @@ -0,0 +1,78 @@ +/* + * 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.ajax; + +import java.util.List; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.policy.Intent; +import org.apache.tuscany.sca.policy.PolicySet; + +/** + * Helper for implementing Bindings, implements all the + * standard getters and setters on the binding interface. + * TODO: I'd really like this to be provided by Tuscany somewhere + */ +public class AbstractBinding implements Binding { + + private String name; + private String uri; + private List<Object> extensions; + private boolean unresolved; + private List<Intent> requiredIntents; + private List<PolicySet> policySets; + + public String getName() { + return name; + } + + public String getURI() { + return uri; + } + + public void setName(String name) { + this.name = name; + } + + public void setURI(String uri) { + this.uri = uri; + } + + public List<Object> getExtensions() { + return extensions; + } + + public boolean isUnresolved() { + return unresolved; + } + + public void setUnresolved(boolean unresolved) { + this.unresolved = unresolved; + } + + public List<Intent> getRequiredIntents() { + return requiredIntents; + } + + public List<PolicySet> getPolicySets() { + return policySets; + } + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxBinding.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxBinding.java new file mode 100644 index 0000000000..ae5f87b433 --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxBinding.java @@ -0,0 +1,30 @@ +/* + * 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.ajax; + +/** + * The runtime representation of the <binding.ajax> SCDL + * + * Empty as <binding.ajax> doesn't use any additional + * attributes or elements (yet). + */ +public class AjaxBinding extends AbstractBinding { + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxBindingSCDLProcessor.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxBindingSCDLProcessor.java new file mode 100644 index 0000000000..a7f86c91fe --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxBindingSCDLProcessor.java @@ -0,0 +1,73 @@ +/* + * 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.ajax; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.xml.Constants; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; + +/** + * A StAXArtifactProcessor to handle the <binding.ajax> SCDL + */ +public class AjaxBindingSCDLProcessor implements StAXArtifactProcessor { + + public static QName AJAX_BINDING_QNAME = new QName(Constants.SCA10_NS, "binding.ajax"); + + public QName getArtifactType() { + return AJAX_BINDING_QNAME; + } + public Class getModelType() { + return AjaxBinding.class; + } + + public Object read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { + AjaxBinding dwrBinding = new AjaxBinding(); + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && AJAX_BINDING_QNAME.equals(reader.getName())) { + break; + } + } + return dwrBinding; + } + + public void write(Object arg0, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { + writer.writeStartElement(Constants.SCA10_NS, AJAX_BINDING_QNAME.getLocalPart()); + + writer.writeEndElement(); + } + + + public void resolve(Object arg0, ModelResolver arg1) throws ContributionResolveException { + // not needed by Ajax binding + } + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxModuleActivator.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxModuleActivator.java new file mode 100644 index 0000000000..26b4d9228a --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxModuleActivator.java @@ -0,0 +1,79 @@ +/* + * 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.ajax; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.ModuleActivator; +import org.apache.tuscany.sca.http.ServletHost; +import org.apache.tuscany.sca.provider.BindingProviderFactory; +import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint; +import org.apache.tuscany.sca.provider.ReferenceBindingProvider; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; + +/** + * Register the ajax binding SCDL processor and the + * ajax service and reference providers with the Tuscany runtime. + */ +public class AjaxModuleActivator implements ModuleActivator { + + public void start(ExtensionPointRegistry registry) { + + // Add the ajax binding SCDL processor to the runtime + StAXArtifactProcessorExtensionPoint staxProcessors = registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); + staxProcessors.addArtifactProcessor(new AjaxBindingSCDLProcessor()); + + final ServletHost servletHost = registry.getExtensionPoint(ServletHost.class); + + // Add a ajax provider factory + ProviderFactoryExtensionPoint providerFactories = registry.getExtensionPoint(ProviderFactoryExtensionPoint.class); + + providerFactories.addProviderFactory(new BindingProviderFactory() { + public ReferenceBindingProvider createReferenceBindingProvider(RuntimeComponent rc, RuntimeComponentReference rcr, Binding b) { + return new AjaxReferenceBindingProvider(rc, rcr, b, servletHost); + } + public ServiceBindingProvider createServiceBindingProvider(RuntimeComponent rc, RuntimeComponentService rcs, Binding b) { + return new AjaxServiceBindingProvider(rc, rcs, b, servletHost); + } + public Class getModelType() { + return AjaxBinding.class; + }} ); + } + + public void stop(ExtensionPointRegistry registry) { + // Remove the ajax binding SCDL processor from the runtime + StAXArtifactProcessorExtensionPoint staxProcessors = registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); + staxProcessors.removeArtifactProcessor((StAXArtifactProcessor)staxProcessors.getProcessor(AjaxBindingSCDLProcessor.class)); + + // Remove the ajax provider factory from the runtime + ProviderFactoryExtensionPoint providerFactories = registry.getExtensionPoint(ProviderFactoryExtensionPoint.class); + providerFactories.removeProviderFactory(providerFactories.getProviderFactory(AjaxBinding.class)); + } + + public Object[] getExtensionPoints() { + return null; // not needed for ajax binding + } + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxReferenceBindingProvider.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxReferenceBindingProvider.java new file mode 100644 index 0000000000..424a1e10c4 --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxReferenceBindingProvider.java @@ -0,0 +1,73 @@ +/* + * 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.ajax; + +import static org.apache.tuscany.sca.binding.ajax.AjaxServiceBindingProvider.SERVLET_PATH; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.provider.ReferenceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; + +public class AjaxReferenceBindingProvider implements ReferenceBindingProvider { + + protected RuntimeComponent runtimeComponent; + protected RuntimeComponentReference runtimeComponentReference; + protected Binding binding; + protected ServletHost servletHost; + + public AjaxReferenceBindingProvider(RuntimeComponent rc, RuntimeComponentReference rcr, Binding b, ServletHost servletHost) { + this.runtimeComponent = rc; + this.runtimeComponentReference = rcr; + this.binding = b; + this.servletHost = servletHost; + } + + public Invoker createInvoker(Operation operation, boolean arg1) { + return new AjaxReferenceInvoker(binding.getName(), operation); + } + + public void start() { + + // there is no "getServlet" method on ServletHost so this has to use remove/add + + AjaxServlet servlet = (AjaxServlet) servletHost.removeServletMapping(SERVLET_PATH); + if (servlet == null) { + servlet = new AjaxServlet(); + } + + servlet.addReference(binding.getName()); + + servletHost.addServletMapping(SERVLET_PATH, servlet); + } + + public void stop() { + servletHost.removeServletMapping(SERVLET_PATH); + } + + public InterfaceContract getBindingInterfaceContract() { + return runtimeComponentReference.getInterfaceContract(); + } + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxReferenceInvoker.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxReferenceInvoker.java new file mode 100644 index 0000000000..e52a0058de --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxReferenceInvoker.java @@ -0,0 +1,88 @@ +/* + * 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.ajax; + +import java.util.Collection; + +import org.apache.tuscany.sca.core.invocation.MessageImpl; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.directwebremoting.ScriptBuffer; +import org.directwebremoting.WebContext; +import org.directwebremoting.WebContextFactory; +import org.directwebremoting.proxy.dwr.Util; + +public class AjaxReferenceInvoker implements Invoker { + + protected String referenceFunction; + + AjaxReferenceInvoker(String referenceName, Operation operation) { + this.referenceFunction = referenceName + "." + operation.getName(); + } + + public Message invoke(Message requestMsg) { + + invoke((Object[])requestMsg.getBody()); + + // Ajax references can not return anything + return new MessageImpl(); + } + + public void invoke(Object[] args) { + + // TODO: this only works if its the same thread as request + WebContext wctx = WebContextFactory.get(); + String currentPage = wctx.getCurrentPage(); + + // Get a DWR Util proxy for all the browsers on the current page: + Collection sessions = wctx.getScriptSessionsByPage(currentPage); + Util utilAll = new Util(sessions); + + ScriptBuffer referenceInvoke = getInvokeFragment(args, wctx); + + // add the reference call to the Util proxy which will cause DWR to + // asynchronously send it to be run on each active browser client + utilAll.addScript(referenceInvoke); + } + + /** + * Creates a fragment of JavaScript code to invoke the reference function + * Eg: "<referenceName>.<operationName>(arg1, arg2,...);" + */ + protected ScriptBuffer getInvokeFragment(Object[] args, WebContext wctx) { + + ScriptBuffer sb = new ScriptBuffer(); + sb.appendScript(referenceFunction); + sb.appendScript("("); + if (args != null) { + for (int i = 0; i < args.length; i++) { + sb.appendData(args[i]); + if (i < (args.length - 1)) { + sb.appendScript(", "); + } + } + } + sb.appendScript(");"); + + return sb; + } + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxServiceBindingProvider.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxServiceBindingProvider.java new file mode 100644 index 0000000000..1555a75be1 --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxServiceBindingProvider.java @@ -0,0 +1,71 @@ +/* + * 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.ajax; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.http.ServletHost; +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; + +public class AjaxServiceBindingProvider implements ServiceBindingProvider { + + protected RuntimeComponent runtimeComponent; + protected RuntimeComponentService runtimeComponentService; + protected Binding binding; + protected ServletHost servletHost; + + public static final String SERVLET_PATH = AjaxServlet.AJAX_SERVLET_PATH + "/*"; + + public AjaxServiceBindingProvider(RuntimeComponent rc, RuntimeComponentService rcs, Binding b, ServletHost servletHost) { + this.runtimeComponent = rc; + this.runtimeComponentService = rcs; + this.binding = b; + this.servletHost = servletHost; + } + + public InterfaceContract getBindingInterfaceContract() { + return runtimeComponentService.getInterfaceContract(); + } + + public void start() { + + // there is no "getServlet" method on ServletHost so this has to use remove/add + + AjaxServlet servlet = (AjaxServlet) servletHost.removeServletMapping(SERVLET_PATH); + if (servlet == null) { + servlet = new AjaxServlet(); + } + + Class<?> type = ((JavaInterface)runtimeComponentService.getInterfaceContract().getInterface()).getJavaClass(); + Object instance = runtimeComponent.createSelfReference(type).getService(); + + servlet.addService(binding.getName(), type, instance); + + servletHost.addServletMapping(SERVLET_PATH, servlet); + } + + public void stop() { + servletHost.removeServletMapping(SERVLET_PATH); + } + +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxServlet.java b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxServlet.java new file mode 100644 index 0000000000..c4209bfbf7 --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/java/org/apache/tuscany/sca/binding/ajax/AjaxServlet.java @@ -0,0 +1,444 @@ +/* + * 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.ajax; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.PrintWriter; +import java.io.UnsupportedEncodingException; +import java.security.Principal; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.Enumeration; +import java.util.HashMap; +import java.util.List; +import java.util.Locale; +import java.util.Map; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletConfig; +import javax.servlet.ServletContext; +import javax.servlet.ServletException; +import javax.servlet.ServletInputStream; +import javax.servlet.ServletRequest; +import javax.servlet.ServletResponse; +import javax.servlet.http.Cookie; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import org.directwebremoting.Container; +import org.directwebremoting.create.AbstractCreator; +import org.directwebremoting.extend.CreatorManager; +import org.directwebremoting.extend.Handler; +import org.directwebremoting.extend.Remoter; +import org.directwebremoting.servlet.DwrServlet; +import org.directwebremoting.servlet.EngineHandler; +import org.directwebremoting.servlet.PathConstants; +import org.directwebremoting.servlet.UrlProcessor; + +/** + * Tuscany customized DWR Servlet to implement support for the Ajax binding + * + * Handles requests for SCA services and references that use <binding.ajax>, + * and also the HTTP GET for the Tuscany ajax system script "scaDomain.js" + */ +public class AjaxServlet extends DwrServlet { + private static final long serialVersionUID = 1L; + + transient protected Map<String, ServiceHolder> services; + transient protected List<String> referenceNames; + transient protected boolean initialized; + transient protected Map<String, String> initParams; + + protected static final String SCADOMAIN_SCRIPT_PATH = "/scaDomain.js"; + public static final String AJAX_SERVLET_PATH = "/SCADomain"; + + public AjaxServlet() { + this.services = new HashMap<String, ServiceHolder>(); + this.referenceNames = new ArrayList<String>(); + + this.initParams = new HashMap<String, String>(); + // maybe use <binding.ajax> attributes to define the init params + initParams.put("activeReverseAjaxEnabled", "true"); + } + + @Override + public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException { + super.service(patchRequest((HttpServletRequest)req), res); + } + + /** + * Initialize the servlet + * There is a single instance of this servlet which is registered + * for multiple path mappings, but the init should only run once. + */ + @Override + public void init(ServletConfig servletConfig) throws ServletException { + if (!initialized) { + super.init(patchConfig(servletConfig)); + addScriptHandler(); + initServices(); + initialized = true; + } + } + + /** + * Add in the handler to process the http get for /sca/scaDomain.js + * + * This wrappers the DWR Engine handler which returns the DWR engine.js script, + * this wrappers that handler so as to add Tuscany specific header and footer code + * to the DWR engine.js to define the Tuscany SCADomain control functions and + * functions for each SCA service and reference that use <binding.dwr>. + */ + protected void addScriptHandler() { + + UrlProcessor urlProcessor = (UrlProcessor)getContainer().getBean(UrlProcessor.class.getName()); + + final EngineHandler engineHandler = + (EngineHandler)getContainer().getBean(PathConstants.URL_PREFIX + "/engine.js"); + + final Handler scaDomainScriptHandler = new Handler() { + public void handle(HttpServletRequest request, HttpServletResponse response) throws IOException { + PrintWriter out = response.getWriter(); + out.println("/** Apache Tuscany scaDomain.js Header */"); + + engineHandler.handle(request, response); + + tuscanyFooter(request, out); + } + + }; + + // add the scaDomainScriptHandler to the urlProcessor + // bit of a hack, there's probably cleaner way to get it registered + urlProcessor.afterContainerSetup(new Container() { + public Object getBean(String name) { + return scaDomainScriptHandler; + } + public Collection getBeanNames() { + return Arrays.asList(new String[] {PathConstants.URL_PREFIX + SCADOMAIN_SCRIPT_PATH}); + } + }); + } + + /** + * Adds the JavaScript defining SCADomain, its control functions, + * and functions for all the available SCA services and references. + */ + protected void tuscanyFooter(HttpServletRequest request, PrintWriter out) { + out.println("/** Apache Tuscany scaDomain.js Footer */"); + out.println(); + out.println("function scaDomain() { }"); + out.println(); + + // Alter the value of these variables in DWR engine.js to add in this servlet's path + out.println("dwr.engine._ModePlainCall = '" + AJAX_SERVLET_PATH + "/call/plaincall/';"); + out.println("dwr.engine._ModeHtmlCall = '" + AJAX_SERVLET_PATH + "/call/htmlcall/';"); + out.println("dwr.engine._ModePlainPoll = '" + AJAX_SERVLET_PATH + "/call/plainpoll/';"); + out.println("dwr.engine._ModeHtmlPoll = '" + AJAX_SERVLET_PATH + "/call/htmlpoll/';"); + + out.println(); + out.println("// SCA sevices"); + + // Use the DWR remoter to generate the JavaScipt function for each SCA service + Remoter remoter = (Remoter)getContainer().getBean(Remoter.class.getName()); + + String path = request.getContextPath() + request.getServletPath(); + + for (String serviceName : services.keySet()) { + String serviceScript = remoter.generateInterfaceScript(serviceName, path); + out.println(serviceScript); + } + + if (referenceNames.size() > 0) { + + out.println("// SCA reverse ajax control functions"); + out.println(); + out.println("scaDomain.open = function() { dwr.engine.setActiveReverseAjax(true); };"); + out.println("scaDomain.close = function() { dwr.engine.setActiveReverseAjax(false); };"); + + out.println(); + out.println("// SCA references"); + out.println(); + + // the JavaScript function for SCA references has an + // empty impl as it uses DWR severside "push" + for (String referenceName : referenceNames) { + out.println("function " + referenceName + "() { }"); + } + } + + out.println(); + out.println("/** End of Apache Tuscany scaDomain.js */"); + out.println(); + } + + /** + * Add an SCA reference to be added to the DWR runtime + */ + public void addReference(String name) { + referenceNames.add(name); + } + + /** + * Add an SCA service to be added to the DWR runtime + */ + public void addService(String name, final Class type, final Object instance) { + ServiceHolder holder = new ServiceHolder(); + holder.name = name; + holder.type = type; + holder.instance = instance; + services.put(name, holder); + } + + /** + * Defines each SCA service proxy instance to DWR + */ + protected void initServices() { + CreatorManager creatorManager = (CreatorManager)getContainer().getBean(CreatorManager.class.getName()); + + for (final ServiceHolder holder : services.values()) { + creatorManager.addCreator(holder.name, new AbstractCreator() { + public Class getType() { + return holder.type; + } + + public Object getInstance() throws InstantiationException { + return holder.instance; + } + }); + } + } + + // utility class to aid passing around services + class ServiceHolder { + String name; + Class type; + Object instance; + } + + /** + * Patch the ServletConfig to enable setting init params for DWR + * and so DWR can't see the Tuscany servlet's init params. + */ + protected ServletConfig patchConfig(final ServletConfig servletConfig) { + ServletConfig patchedContext = new ServletConfig() { + public String getInitParameter(String name) { + return initParams.get(name); + } + public Enumeration getInitParameterNames() { + return Collections.enumeration(initParams.keySet()); + } + public ServletContext getServletContext() { + return servletConfig.getServletContext(); + } + public String getServletName() { + return servletConfig.getServletName(); + } + }; + return patchedContext; + } + + /** + * This changes the value returned from getPathInfo so that it does not include + * the path prefix of this Servlet. The DWR servlet expects its handlers to be + * at the root, eg /call/plaincall/, so they aren't found if the value request + * getPathInfo returns includes this servlets path, eg /SCADomain/call/plaincall/ + */ + protected HttpServletRequest patchRequest(final HttpServletRequest req) { + + final String translatedPath = req.getPathInfo().substring(AJAX_SERVLET_PATH.length()); + + HttpServletRequest patchedRequest = new HttpServletRequest() { + public Object getAttribute(String arg0) { + return req.getAttribute(arg0); + } + public Enumeration getAttributeNames() { + return req.getAttributeNames(); + } + public String getCharacterEncoding() { + return req.getCharacterEncoding(); + } + public int getContentLength() { + return req.getContentLength(); + } + public String getContentType() { + return req.getContentType(); + } + public ServletInputStream getInputStream() throws IOException { + return req.getInputStream(); + } + public String getLocalAddr() { + return req.getLocalAddr(); + } + public String getLocalName() { + return req.getLocalName(); + } + public int getLocalPort() { + return req.getLocalPort(); + } + public Locale getLocale() { + return req.getLocale(); + } + public Enumeration getLocales() { + return req.getLocales(); + } + public String getParameter(String arg0) { + return req.getParameter(arg0); + } + public Map getParameterMap() { + return req.getParameterMap(); + } + public Enumeration getParameterNames() { + return req.getParameterNames(); + } + public String[] getParameterValues(String arg0) { + return req.getParameterValues(arg0); + } + public String getProtocol() { + return req.getProtocol(); + } + public BufferedReader getReader() throws IOException { + return req.getReader(); + } + @SuppressWarnings("deprecation") + public String getRealPath(String arg0) { + return req.getRealPath(arg0); + } + public String getRemoteAddr() { + return req.getRemoteAddr(); + } + public String getRemoteHost() { + return req.getRemoteHost(); + } + public int getRemotePort() { + return req.getRemotePort(); + } + public RequestDispatcher getRequestDispatcher(String arg0) { + return req.getRequestDispatcher(arg0); + } + public String getScheme() { + return req.getScheme(); + } + public String getServerName() { + return req.getServerName(); + } + public int getServerPort() { + return req.getServerPort(); + } + public boolean isSecure() { + return req.isSecure(); + } + public void removeAttribute(String arg0) { + req.removeAttribute(arg0); + } + public void setAttribute(String arg0, Object arg1) { + req.setAttribute(arg0, arg1); + } + public void setCharacterEncoding(String arg0) throws UnsupportedEncodingException { + req.setCharacterEncoding(arg0); + } + public String getAuthType() { + return req.getAuthType(); + } + public String getContextPath() { + return req.getContextPath(); + } + public Cookie[] getCookies() { + return req.getCookies(); + } + public long getDateHeader(String arg0) { + return req.getDateHeader(arg0); + } + public String getHeader(String arg0) { + return req.getHeader(arg0); + } + public Enumeration getHeaderNames() { + return req.getHeaderNames(); + } + public Enumeration getHeaders(String arg0) { + return req.getHeaders(arg0); + } + public int getIntHeader(String arg0) { + return req.getIntHeader(arg0); + } + public String getMethod() { + return req.getMethod(); + } + public String getPathInfo() { + + // *** return the translated path + + return translatedPath; + } + public String getPathTranslated() { + return req.getPathTranslated(); + } + public String getQueryString() { + return req.getQueryString(); + } + public String getRemoteUser() { + return req.getRemoteUser(); + } + public String getRequestURI() { + return req.getRequestURI(); + } + public StringBuffer getRequestURL() { + return req.getRequestURL(); + } + public String getRequestedSessionId() { + return req.getRequestedSessionId(); + } + public String getServletPath() { + return req.getServletPath(); + } + public HttpSession getSession() { + return req.getSession(); + } + public HttpSession getSession(boolean arg0) { + return req.getSession(arg0); + } + public Principal getUserPrincipal() { + return req.getUserPrincipal(); + } + public boolean isRequestedSessionIdFromCookie() { + return req.isRequestedSessionIdFromCookie(); + } + public boolean isRequestedSessionIdFromURL() { + return req.isRequestedSessionIdFromURL(); + } + @SuppressWarnings("deprecation") + public boolean isRequestedSessionIdFromUrl() { + return req.isRequestedSessionIdFromUrl(); + } + public boolean isRequestedSessionIdValid() { + return req.isRequestedSessionIdValid(); + } + public boolean isUserInRole(String arg0) { + return req.isUserInRole(arg0); + } + + }; + return patchedRequest; + } +} diff --git a/sandbox/ant/ajax/binding.ajax/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivator b/sandbox/ant/ajax/binding.ajax/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivator new file mode 100644 index 0000000000..8c73319db1 --- /dev/null +++ b/sandbox/ant/ajax/binding.ajax/src/main/resources/META-INF/services/org.apache.tuscany.sca.core.ModuleActivator @@ -0,0 +1,18 @@ +# 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.
+# Implementation class for the ExtensionActivator
+org.apache.tuscany.sca.binding.ajax.AjaxModuleActivator
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