/**
* 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.activemq.kaha.impl.index.hash;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.activemq.kaha.Marshaller;
/**
* Key and index for DiskBased Hash Index
*
* @version $Revision: 1.1.1.1 $
*/
class HashEntry implements Comparable {
static final int NOT_SET = -1;
private Comparable key;
private long indexOffset;
public int compareTo(Object o) {
if (o instanceof HashEntry) {
HashEntry other = (HashEntry)o;
return key.compareTo(other.key);
} else {
return key.compareTo(o);
}
}
public boolean equals(Object o) {
return compareTo(o) == 0;
}
public int hashCode() {
return key.hashCode();
}
public String toString() {
return "HashEntry(" + key + "," + indexOffset + ")";
}
HashEntry copy() {
HashEntry copy = new HashEntry();
copy.key = this.key;
copy.indexOffset = this.indexOffset;
return copy;
}
/**
* @return the key
*/
Comparable getKey() {
return this.key;
}
/**
* @param key the key to set
*/
void setKey(Comparable key) {
this.key = key;
}
/**
* @return the indexOffset
*/
long getIndexOffset() {
return this.indexOffset;
}
/**
* @param indexOffset the indexOffset to set
*/
void setIndexOffset(long indexOffset) {
this.indexOffset = indexOffset;
}
void write(Marshaller keyMarshaller, DataOutput dataOut) throws IOException {
dataOut.writeLong(indexOffset);
keyMarshaller.writePayload(key, dataOut);
}
void read(Marshaller keyMarshaller, DataInput dataIn) throws IOException {
indexOffset = dataIn.readLong();
key = (Comparable)keyMarshaller.readPayload(dataIn);
}
}
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