org.fabric3.fabric.container.wire.InvocationChainImpl Maven / Gradle / Ivy
/*
* Fabric3
* Copyright (c) 2009-2015 Metaform Systems
*
* 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.
*
* Portions originally based on Apache Tuscany 2007
* licensed under the Apache 2.0 license.
*/
package org.fabric3.fabric.container.wire;
import org.fabric3.spi.model.physical.PhysicalOperationDefinition;
import org.fabric3.spi.container.wire.Interceptor;
import org.fabric3.spi.container.wire.InvocationChain;
/**
* Default implementation of an invocation chain.
*/
public class InvocationChainImpl implements InvocationChain {
protected PhysicalOperationDefinition physicalOperation;
protected Interceptor interceptorChainHead;
protected Interceptor interceptorChainTail;
public InvocationChainImpl(PhysicalOperationDefinition operation) {
this.physicalOperation = operation;
}
public PhysicalOperationDefinition getPhysicalOperation() {
return physicalOperation;
}
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;
}
}