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author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:26:33 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:26:33 +0000 |
commit | a40e527938d76ba71f211da7e327adb50384ba69 (patch) | |
tree | cb8f99f1727122b040a3f0fbb6649292b6a74302 /sca-java-1.x/tags/1.5-RC0/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java | |
parent | 968721109881107520d7aefa91d7fcc0519d7739 (diff) |
Moving 1.x tags
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835157 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-1.x/tags/1.5-RC0/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java')
-rw-r--r-- | sca-java-1.x/tags/1.5-RC0/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.5-RC0/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java b/sca-java-1.x/tags/1.5-RC0/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java new file mode 100644 index 0000000000..24e6dbbcd4 --- /dev/null +++ b/sca-java-1.x/tags/1.5-RC0/modules/binding-dwr/src/main/java/org/apache/tuscany/sca/binding/dwr/DWRInvoker.java @@ -0,0 +1,93 @@ +/* + * 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; + +/** + * The invoker for a DWR Binding. + * + * @version $Rev$ $Date$ + */ +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: "<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; + } + +} |