diff options
Diffstat (limited to 'sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/InvokerInterceptor.java')
-rw-r--r-- | sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/InvokerInterceptor.java | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/InvokerInterceptor.java b/sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/InvokerInterceptor.java new file mode 100644 index 0000000000..7b9dc1c86f --- /dev/null +++ b/sca-java-1.x/tags/java-stable-20060304/sca/core/src/main/java/org/apache/tuscany/core/invocation/impl/InvokerInterceptor.java @@ -0,0 +1,46 @@ +/** + * + * 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.invocation.impl; + +import org.apache.tuscany.core.invocation.Interceptor; +import org.apache.tuscany.core.invocation.InvocationRuntimeException; +import org.apache.tuscany.core.invocation.TargetInvoker; +import org.apache.tuscany.core.message.Message; + +/** + * Serves as a tail interceptor on a target invocation chain. This implementation dispatches to the target invoker + * passed inside the invocation message. Target invokers are passed from the source in order to allow for caching of + * target instances. + * + * @see org.apache.tuscany.core.invocation.TargetInvoker + * @version $Rev$ $Date$ + */ +public class InvokerInterceptor implements Interceptor { + + public InvokerInterceptor() { + } + + public Message invoke(Message msg) throws InvocationRuntimeException { + TargetInvoker invoker = msg.getTargetInvoker(); + if (invoker == null) { + throw new InvocationRuntimeException("No target invoker specified on message"); + } + return invoker.invoke(msg); + } + + public void setNext(Interceptor next) { + throw new IllegalStateException("This interceptor must be the last one in an target interceptor chain"); + } + +} |