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Diffstat (limited to 'branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/InvocationChainImpl.java')
-rw-r--r-- | branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/InvocationChainImpl.java | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/InvocationChainImpl.java b/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/InvocationChainImpl.java new file mode 100644 index 0000000000..d93426af4c --- /dev/null +++ b/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/wire/InvocationChainImpl.java @@ -0,0 +1,107 @@ +/* + * 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.core.wire; + +import org.apache.tuscany.spi.model.Operation; +import org.apache.tuscany.spi.wire.Interceptor; +import org.apache.tuscany.spi.wire.InvocationChain; +import org.apache.tuscany.spi.wire.TargetInvoker; + +/** + * Contains functionality common to source- and target- side invocation chains + * + * @version $Rev$ $Date$ + */ +public abstract class InvocationChainImpl implements InvocationChain { + protected Operation operation; + protected TargetInvoker targetInvoker; + protected Interceptor interceptorChainHead; + protected Interceptor interceptorChainTail; + + + // the pointer to a bridged target head interceptor or null if the target has no interceptors + protected Interceptor targetInterceptorChainHead; + + public InvocationChainImpl(Operation operation) { + assert operation != null : "No operation type specified"; + this.operation = operation; + } + + public Operation getOperation() { + return operation; + } + + public void setTargetInvoker(TargetInvoker invoker) { + this.targetInvoker = invoker; + } + + public TargetInvoker getTargetInvoker() { + return targetInvoker; + } + + public void addInterceptor(Interceptor interceptor) { + if (interceptorChainHead == null) { + interceptorChainHead = interceptor; + } else { + interceptorChainTail.setNext(interceptor); + } + interceptorChainTail = interceptor; + } + + public void addInterceptor(int index, Interceptor interceptor) { + int i = 0; + Interceptor next = interceptorChainHead; + Interceptor prev = null; + while (next != null && i < index) { + prev = next; + next = next.getNext(); + i++; + } + if (i == index) { + if (prev != null) { + prev.setNext(interceptor); + } else { + interceptorChainHead = interceptor; + } + interceptor.setNext(next); + if (next == null) { + interceptorChainTail = interceptor; + } + } else { + throw new ArrayIndexOutOfBoundsException(index); + } + } + + public Interceptor getHeadInterceptor() { + return interceptorChainHead; + } + + public Interceptor getTailInterceptor() { + return interceptorChainTail; + } + + public void setTargetInterceptor(Interceptor interceptor) { + targetInterceptorChainHead = interceptor; + } + + public Interceptor getTargetInterceptor() { + return targetInterceptorChainHead; + } + +} |