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Diffstat (limited to 'sca-java-1.x/tags/java-M1-20060518/java/sca/core/src/main/java/org/apache/tuscany/core/wire/SourceInvocationConfiguration.java')
-rw-r--r-- | sca-java-1.x/tags/java-M1-20060518/java/sca/core/src/main/java/org/apache/tuscany/core/wire/SourceInvocationConfiguration.java | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-20060518/java/sca/core/src/main/java/org/apache/tuscany/core/wire/SourceInvocationConfiguration.java b/sca-java-1.x/tags/java-M1-20060518/java/sca/core/src/main/java/org/apache/tuscany/core/wire/SourceInvocationConfiguration.java new file mode 100644 index 0000000000..80e1450a0d --- /dev/null +++ b/sca-java-1.x/tags/java-M1-20060518/java/sca/core/src/main/java/org/apache/tuscany/core/wire/SourceInvocationConfiguration.java @@ -0,0 +1,131 @@ +/** + * + * 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; + +import org.apache.tuscany.core.wire.impl.MessageChannelImpl; +import org.apache.tuscany.core.wire.impl.MessageDispatcher; +import org.apache.tuscany.core.wire.impl.RequestResponseInterceptor; + +import java.lang.reflect.Method; + +/** + * Contains a source-side invocation pipeline for a service operation. + * + * @version $Rev: 394379 $ $Date: 2006-04-15 15:01:36 -0700 (Sat, 15 Apr 2006) $ + */ +public class SourceInvocationConfiguration extends InvocationConfiguration { + + // the pointer to the bridged target head interceptor or null if the target has no interceptors + private Interceptor targetInterceptorChainHead; + + // the pointer to bridged target request channel, or null if the target has an interceptor + private MessageChannel targetRequestChannel; + + // the pointer to bridged target response channel, or null if the target has an interceptor + private MessageChannel targetResponseChannel; + + /** + * Creates an new wire configuration for the given service reference operation + * + * @param operation the method on the interface representing specified by the reference, where the method corresponds to the + * service operation + */ + public SourceInvocationConfiguration(Method operation) { + super(operation); + } + + /** + * Sets the head interceptor of the target-side configuration for the wire. Used when the runtime bridges source and target + * chains. + * + * @param interceptor + */ + public void setTargetInterceptor(Interceptor interceptor) { + targetInterceptorChainHead = interceptor; + } + + /** + * Returns the head target-side interceptor. This will be the head interceptor of the "bridged" target configuration. + */ + public Interceptor getTargetInterceptor() { + return targetInterceptorChainHead; + } + + /** + * Sets the target-side request channel. Used when the runtime bridges source and target chains. + */ + public void setTargetRequestChannel(MessageChannel channel) { + targetRequestChannel = channel; + } + + /** + * Sets the target-side response channel. Used when the runtime bridges source and target chains. + */ + public void setTargetResponseChannel(MessageChannel channel) { + targetResponseChannel = channel; + } + + /** + * Prepares the configuration by linking interceptors and handlers + */ + @Override + public void build() { + + if (requestHandlers != null && targetInterceptorChainHead != null) { + // on target-side, connect existing handlers and interceptors + MessageHandler messageDispatcher = new MessageDispatcher(targetInterceptorChainHead); + requestHandlers.add(messageDispatcher); + } + + if (requestHandlers != null) { + MessageChannel requestChannel = new MessageChannelImpl(requestHandlers); + MessageChannel responseChannel = new MessageChannelImpl(responseHandlers); + Interceptor channelInterceptor = new RequestResponseInterceptor(requestChannel, targetRequestChannel, + responseChannel, targetResponseChannel); + + if (interceptorChainHead != null) { + interceptorChainTail.setNext(channelInterceptor); + } else { + interceptorChainHead = channelInterceptor; + } + + } else { + // no request handlers + if (interceptorChainHead != null) { + if (targetInterceptorChainHead != null) { + // Connect source interceptor chain directly to target interceptor chain + interceptorChainTail.setNext(targetInterceptorChainHead); + // interceptorChainTail = targetInterceptorChainHead; + } else { + // Connect source interceptor chain to the target request channel + Interceptor channelInterceptor = new RequestResponseInterceptor(null, targetRequestChannel, null, + targetResponseChannel); + interceptorChainTail.setNext(channelInterceptor); + } + } else { + // no source interceptor chain or source handlers, conntect to target interceptor chain or channel + if (targetInterceptorChainHead != null) { + interceptorChainHead = targetInterceptorChainHead; + interceptorChainTail = targetInterceptorChainHead; + } else { + Interceptor channelInterceptor = new RequestResponseInterceptor(null, targetRequestChannel, null, + targetResponseChannel); + interceptorChainHead = channelInterceptor; + interceptorChainTail = channelInterceptor; + } + } + } + } + +} |