diff options
Diffstat (limited to 'sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/wire/impl/RequestResponseInterceptor.java')
-rw-r--r-- | sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/wire/impl/RequestResponseInterceptor.java | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/wire/impl/RequestResponseInterceptor.java b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/wire/impl/RequestResponseInterceptor.java new file mode 100644 index 0000000000..ae1c69fc12 --- /dev/null +++ b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/wire/impl/RequestResponseInterceptor.java @@ -0,0 +1,73 @@ +/** + * + * Copyright 2005 The Apache Software Foundation or its licensors, as applicable. + * + * 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. + */ +package org.apache.tuscany.core.wire.impl; + +import org.apache.tuscany.core.wire.Interceptor; +import org.apache.tuscany.core.wire.MessageChannel; +import org.apache.tuscany.core.message.Message; + +/** + * An interceptor that first sends a message down its request channel then extracts the response from the + * message and sends it down the response channel before returning it up the interceptor stack. + * + * @version $Rev$ $Date$ + */ +public class RequestResponseInterceptor implements Interceptor { + + private MessageChannel sourceRequestChannel; + + private MessageChannel sourceResponseChannel; + + private MessageChannel targetRequestChannel; + + private MessageChannel targetResponseChannel; + + /** + * Construct an interceptor that sends messages down the supplied channels. + * + * @param targetRequestChannel the channel to send request messages down + * @param targetResponseChannel the channel to sent response messages down + */ + public RequestResponseInterceptor(MessageChannel sourceRequestChannel, MessageChannel targetRequestChannel, + MessageChannel sourceResponseChannel, MessageChannel targetResponseChannel) { + this.sourceRequestChannel = sourceRequestChannel; + this.sourceResponseChannel = sourceResponseChannel; + this.targetRequestChannel = targetRequestChannel; + this.targetResponseChannel = targetResponseChannel; + } + + public Message invoke(Message requestMessage) { + if (sourceRequestChannel != null) { + sourceRequestChannel.send(requestMessage); + } + if (targetRequestChannel != null) { + targetRequestChannel.send(requestMessage); + } + Message responseMessage = requestMessage.getRelatedCallbackMessage(); + if (targetResponseChannel != null) { + targetResponseChannel.send(responseMessage); + } + if (sourceResponseChannel != null) { + sourceResponseChannel.send(responseMessage); + } + return responseMessage; + } + + public void setNext(Interceptor next) { + throw new IllegalStateException("This interceptor must be the last one in an interceptor chain"); + } +} |