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/*
* Copyright 2014 Open Networking Laboratory
*
* 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.onlab.packet;
/**
*
*
*/
public abstract class BasePacket implements IPacket {
protected IPacket parent;
protected IPacket payload;
/**
* @return the parent
*/
@Override
public IPacket getParent() {
return this.parent;
}
/**
* @param parent
* the parent to set
*/
@Override
public IPacket setParent(final IPacket parent) {
this.parent = parent;
return this;
}
/**
* @return the payload
*/
@Override
public IPacket getPayload() {
return this.payload;
}
/**
* @param payload
* the payload to set
*/
@Override
public IPacket setPayload(final IPacket payload) {
this.payload = payload;
return this;
}
@Override
public void resetChecksum() {
if (this.parent != null) {
this.parent.resetChecksum();
}
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 6733;
int result = 1;
result = prime * result
+ (this.payload == null ? 0 : this.payload.hashCode());
return result;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof BasePacket)) {
return false;
}
final BasePacket other = (BasePacket) obj;
if (this.payload == null) {
if (other.payload != null) {
return false;
}
} else if (!this.payload.equals(other.payload)) {
return false;
}
return true;
}
@Override
public Object clone() {
IPacket pkt;
try {
pkt = this.getClass().newInstance();
} catch (final Exception e) {
throw new RuntimeException("Could not clone packet");
}
final byte[] data = this.serialize();
pkt.deserialize(this.serialize(), 0, data.length);
pkt.setParent(this.parent);
return pkt;
}
}
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