Author: davsclaus Date: Tue Mar 10 07:10:35 2009 New Revision: 752002 URL: http://svn.apache.org/viewvc?rev=752002&view=rev Log: Splitter with aggregation strategy with InOut for wiki sample
Added: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java (with props) Added: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java?rev=752002&view=auto ============================================================================== --- camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java (added) +++ camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java Tue Mar 10 07:10:35 2009 @@ -0,0 +1,128 @@ +/** + * 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.camel.processor; + +import org.apache.camel.ContextTestSupport; +import org.apache.camel.Exchange; +import org.apache.camel.builder.RouteBuilder; +import org.apache.camel.component.mock.MockEndpoint; +import org.apache.camel.impl.JndiRegistry; +import org.apache.camel.processor.aggregate.AggregationStrategy; + +/** + * @version $Revision$ + */ +public class SplitAggregateInOutTest extends ContextTestSupport { + + private String expectedBody = "Response[(id=1,item=A);(id=2,item=B);(id=3,item=C)]"; + + public void testSplitAndAggregateInOut() throws Exception { + MockEndpoint mock = getMockEndpoint("mock:result"); + mock.expectedBodiesReceived(expectedBody); + + // use requestBody as its InOut + Object out = template.requestBody("direct:start", "a...@b@C"); + assertEquals(expectedBody, out); + + assertMockEndpointsSatisfied(); + } + + @Override + protected JndiRegistry createRegistry() throws Exception { + JndiRegistry jndi = super.createRegistry(); + jndi.bind("MyOrderService", new MyOrderService()); + return jndi; + } + + @Override + protected RouteBuilder createRouteBuilder() throws Exception { + return new RouteBuilder() { + @Override + public void configure() throws Exception { + // START SNIPPET: e1 + // this routes starts from the direct:start endpoint + // the body is then splitted based on @ separator + // the splitter in Camel supports InOut as well and for that we need + // to be able to aggregate what response we need to send back, so we provide our + // own strategy with the class MyOrderStrategy. + from("direct:start") + .split(body().tokenize("@"), new MyOrderStrategy()) + // each splitted message is then send to this bean where we can process it + .to("bean:MyOrderService?method=handleOrder") + // this is important to end the splitter route as we do not want to do more routing + // on each splitted message + .end() + // after we have splitted and handled each message we want to send a single combined + // response back to the original caller, so we let this bean build it for us + // this bean will receive the result of the aggregate strategy: MyOrderStrategy + .to("bean:MyOrderService?method=buildCombinedResponse") + // END SNIPPET: e1 + .to("mock:result"); + } + }; + } + + // START SNIPPET: e2 + public static class MyOrderService { + + private static int counter; + + /** + * We just handle the order by returning a id line for the order + */ + public String handleOrder(String line) { + return "(id=" + ++counter + ",item=" + line + ")"; + } + + /** + * We use the same bean for building the combined response to send + * back to the original caller + */ + public String buildCombinedResponse(String line) { + return "Response[" + line + "]"; + } + } + // END SNIPPET: e2 + + // START SNIPPET: e3 + /** + * This is our own order aggregation strategy where we can control + * how each splitted message should be combined. As we do not want to + * loos any message we copy from the new to the old to preserve the + * order lines as long we process them + */ + public static class MyOrderStrategy implements AggregationStrategy { + + public Exchange aggregate(Exchange oldExchange, Exchange newExchange) { + // put order together in old exchange by adding the order from new exchange + + // copy from OUT as we use InOut pattern + String orders = oldExchange.getOut().getBody(String.class); + String newLine = newExchange.getOut().getBody(String.class); + + // put orders together separating by semi colon + orders = orders + ";" + newLine; + // put combined order back on old to preserve it + oldExchange.getOut().setBody(orders); + + // return old as this is the one that has all the orders gathered until now + return oldExchange; + } + } + // END SNIPPET: e3 + +} \ No newline at end of file Propchange: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java ------------------------------------------------------------------------------ svn:eol-style = native Propchange: camel/trunk/camel-core/src/test/java/org/apache/camel/processor/SplitAggregateInOutTest.java ------------------------------------------------------------------------------ svn:keywords = Rev Date