From bdd0a41aed7edf21ec2a65cfa17a86af2ef8c48a Mon Sep 17 00:00:00 2001 From: dims Date: Tue, 17 Jun 2008 00:23:01 +0000 Subject: Move Tuscany from Incubator to top level. git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68 --- tags/java/sca/1.2/modules/binding-dwr/DISCLAIMER | 8 + tags/java/sca/1.2/modules/binding-dwr/LICENSE | 205 +++++++++++++++++ tags/java/sca/1.2/modules/binding-dwr/NOTICE | 6 + tags/java/sca/1.2/modules/binding-dwr/pom.xml | 76 +++++++ .../apache/tuscany/sca/binding/dwr/DWRBinding.java | 32 +++ .../sca/binding/dwr/DWRBindingActivator.java | 51 +++++ .../apache/tuscany/sca/binding/dwr/DWRInvoker.java | 88 ++++++++ .../tuscany/sca/binding/dwr/DWRInvokerFactory.java | 62 ++++++ .../apache/tuscany/sca/binding/dwr/DWRService.java | 76 +++++++ .../apache/tuscany/sca/binding/dwr/DWRServlet.java | 245 +++++++++++++++++++++ ...e.tuscany.sca.extension.helper.BindingActivator | 19 ++ 11 files changed, 868 insertions(+) create mode 100644 tags/java/sca/1.2/modules/binding-dwr/DISCLAIMER create mode 100644 tags/java/sca/1.2/modules/binding-dwr/LICENSE create mode 100644 tags/java/sca/1.2/modules/binding-dwr/NOTICE create mode 100644 tags/java/sca/1.2/modules/binding-dwr/pom.xml create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBinding.java create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBindingActivator.java create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvokerFactory.java create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRService.java create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRServlet.java create mode 100644 tags/java/sca/1.2/modules/binding-dwr/src/main/resources/META-INF/services/org.apache.tuscany.sca.extension.helper.BindingActivator (limited to 'tags/java/sca/1.2/modules/binding-dwr') diff --git a/tags/java/sca/1.2/modules/binding-dwr/DISCLAIMER b/tags/java/sca/1.2/modules/binding-dwr/DISCLAIMER new file mode 100644 index 0000000000..d68a410903 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/DISCLAIMER @@ -0,0 +1,8 @@ +Apache Tuscany is an effort undergoing incubation at The Apache Software +Foundation (ASF), sponsored by the Apache Web Services PMC. Incubation is +required of all newly accepted projects until a further review indicates that +the infrastructure, communications, and decision making process have stabilized +in a manner consistent with other successful ASF projects. While incubation +status is not necessarily a reflection of the completeness or stability of the +code, it does indicate that the project has yet to be fully endorsed by the ASF. + diff --git a/tags/java/sca/1.2/modules/binding-dwr/LICENSE b/tags/java/sca/1.2/modules/binding-dwr/LICENSE new file mode 100644 index 0000000000..8aa906c321 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/LICENSE @@ -0,0 +1,205 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed 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. + + + diff --git a/tags/java/sca/1.2/modules/binding-dwr/NOTICE b/tags/java/sca/1.2/modules/binding-dwr/NOTICE new file mode 100644 index 0000000000..fdfa0e9faa --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/NOTICE @@ -0,0 +1,6 @@ +${pom.name} +Copyright (c) 2005 - 2008 The Apache Software Foundation + +This product includes software developed by +The Apache Software Foundation (http://www.apache.org/). + diff --git a/tags/java/sca/1.2/modules/binding-dwr/pom.xml b/tags/java/sca/1.2/modules/binding-dwr/pom.xml new file mode 100644 index 0000000000..00ba5f2004 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/pom.xml @@ -0,0 +1,76 @@ + + + + + 4.0.0 + + org.apache.tuscany.sca + tuscany-modules + 1.2-incubating + ../pom.xml + + + tuscany-binding-dwr + Apache Tuscany SCA AJAX DWR Binding Extension + + + + + org.apache.tuscany.sca + tuscany-extension-helper + 1.2-incubating + + + + org.apache.tuscany.sca + tuscany-host-http + 1.2-incubating + + + + org.directwebremoting + dwr + 2.0.1 + + + + javax.servlet + servlet-api + 2.4 + provided + + + + junit + junit + 4.2 + test + + + + org.easymock + easymock + 2.2 + test + + + + + diff --git a/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBinding.java b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBinding.java new file mode 100644 index 0000000000..f2ed343ea0 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBinding.java @@ -0,0 +1,32 @@ +/* + * 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.dwr; + + + + +/** + * The runtime representation of the SCDL + */ +public class DWRBinding { + + // Empty as doesn't use any additional attributes or elements (yet). + +} diff --git a/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBindingActivator.java b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBindingActivator.java new file mode 100644 index 0000000000..281be750d1 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRBindingActivator.java @@ -0,0 +1,51 @@ +/* + * 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.dwr; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.extension.helper.BindingActivator; +import org.apache.tuscany.sca.extension.helper.ComponentLifecycle; +import org.apache.tuscany.sca.extension.helper.InvokerFactory; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; + +public class DWRBindingActivator implements BindingActivator{ + + private ServletHost servletHost; + + public DWRBindingActivator(ServletHost servletHost) { + this.servletHost = servletHost; + } + + public Class getBindingClass() { + return DWRBinding.class; + } + + public InvokerFactory createInvokerFactory(RuntimeComponent rc, RuntimeComponentReference rcr, Binding b, DWRBinding ab) { + return new DWRInvokerFactory(rc, rcr, b, ab, servletHost); + } + + public ComponentLifecycle createService(RuntimeComponent rc, RuntimeComponentService rcs, Binding b, DWRBinding ab) { + return new DWRService(rc, rcs, b, ab, servletHost); + } + +} diff --git a/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java new file mode 100644 index 0000000000..ab40ae40cb --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.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.dwr; + +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 DWRInvoker implements Invoker { + + private String referenceFunction; + + public DWRInvoker(String referenceName, Operation operation) { + this.referenceFunction = referenceName + "." + operation.getName(); + } + + public Message invoke(Message requestMsg) { + + invoke((Object[])requestMsg.getBody()); + + // DWR 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: ".(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/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvokerFactory.java b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvokerFactory.java new file mode 100644 index 0000000000..c6697e1b46 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvokerFactory.java @@ -0,0 +1,62 @@ +/* + * 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.dwr; + +import static org.apache.tuscany.sca.binding.dwr.DWRService.SERVLET_PATH; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.extension.helper.ComponentLifecycle; +import org.apache.tuscany.sca.extension.helper.InvokerFactory; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; + +public class DWRInvokerFactory implements InvokerFactory, ComponentLifecycle { + + private Binding binding; + private ServletHost servletHost; + + public DWRInvokerFactory(RuntimeComponent rc, RuntimeComponentReference rcr, Binding b, DWRBinding ab, ServletHost servletHost) { + this.binding = b; + this.servletHost = servletHost; + } + + public Invoker createInvoker(Operation operation) { + return new DWRInvoker(binding.getName(), operation); + } + + public void start() { + + DWRServlet servlet = (DWRServlet) servletHost.getServletMapping(SERVLET_PATH); + if (servlet == null) { + servlet = new DWRServlet(); + servletHost.addServletMapping(SERVLET_PATH, servlet); + } + + servlet.addReference(binding.getName()); + } + + public void stop() { + servletHost.removeServletMapping(SERVLET_PATH); + } + +} diff --git a/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRService.java b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRService.java new file mode 100644 index 0000000000..6e78d2937b --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRService.java @@ -0,0 +1,76 @@ +/* + * 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.dwr; + +import java.lang.reflect.InvocationHandler; +import java.lang.reflect.Method; +import java.lang.reflect.Proxy; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.extension.helper.ComponentLifecycle; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceUtil; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; +import org.apache.tuscany.sca.runtime.RuntimeWire; + +public class DWRService implements ComponentLifecycle { + + private RuntimeComponent rc; + private RuntimeComponentService rcs; + private Binding binding; + private ServletHost servletHost; + + static final String SERVLET_PATH = "/SCADomain/*"; + + public DWRService(RuntimeComponent rc, RuntimeComponentService rcs, Binding binding, DWRBinding ab, ServletHost servletHost) { + this.rc = rc; + this.rcs = rcs; + this.binding = binding; + this.servletHost = servletHost; + } + + public void start() { + + DWRServlet servlet = (DWRServlet) servletHost.getServletMapping(SERVLET_PATH); + if (servlet == null) { + servlet = new DWRServlet(); + servletHost.addServletMapping(SERVLET_PATH, servlet); + } + + // Create a Java proxy to the target service + Class type = ((JavaInterface)rcs.getInterfaceContract().getInterface()).getJavaClass(); + Object proxy = Proxy.newProxyInstance(type.getClassLoader(), new Class[]{type}, new InvocationHandler() { + public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { + RuntimeWire wire = rcs.getRuntimeWire(binding); + Operation op = JavaInterfaceUtil.findOperation(method, rcs.getInterfaceContract().getInterface().getOperations()); + return wire.invoke(op, args); + }}); + + servlet.addService(binding.getName(), type, proxy); + } + + public void stop() { + servletHost.removeServletMapping(SERVLET_PATH); + } + +} diff --git a/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRServlet.java b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRServlet.java new file mode 100644 index 0000000000..8960ba8d96 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRServlet.java @@ -0,0 +1,245 @@ +/* + * 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.dwr; + +import java.io.IOException; +import java.io.PrintWriter; +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.Map; + +import javax.servlet.ServletConfig; +import javax.servlet.ServletContext; +import javax.servlet.ServletException; +import javax.servlet.ServletRequest; +import javax.servlet.ServletResponse; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +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 DWR binding + * + * Handles requests for SCA services and references that use , + * and also the HTTP GET for the Tuscany DWR system script "scaDomain.js" + */ +public class DWRServlet extends DwrServlet { + private static final long serialVersionUID = 1L; + + transient private Map services; + transient private List referenceNames; + transient private boolean initialized; + transient private Map initParams; + + private static final String SCADOMAIN_SCRIPT_PATH = "/scaDomain.js"; + + public DWRServlet() { + this.services = new HashMap(); + this.referenceNames = new ArrayList(); + + this.initParams = new HashMap(); + // maybe use attributes to define the init params + initParams.put("activeReverseAjaxEnabled", "true"); + } + + @Override + public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException { + super.service(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 . + */ + private 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. + */ + private void tuscanyFooter(HttpServletRequest request, PrintWriter out) { + out.println("/** Apache Tuscany scaDomain.js Footer */"); + out.println(); + out.println("function scaDomain() { }"); + out.println(); + out.println("// SCA services"); + + // 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 + */ + private 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 + private 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. + */ + private 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; + } + +} diff --git a/tags/java/sca/1.2/modules/binding-dwr/src/main/resources/META-INF/services/org.apache.tuscany.sca.extension.helper.BindingActivator b/tags/java/sca/1.2/modules/binding-dwr/src/main/resources/META-INF/services/org.apache.tuscany.sca.extension.helper.BindingActivator new file mode 100644 index 0000000000..1a9f91fab2 --- /dev/null +++ b/tags/java/sca/1.2/modules/binding-dwr/src/main/resources/META-INF/services/org.apache.tuscany.sca.extension.helper.BindingActivator @@ -0,0 +1,19 @@ +# 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.dwr.DWRBindingActivator + -- cgit v1.2.3