/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.lucene;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;
import java.util.Set;
import org.infinispan.io.UnsignedNumeric;
import org.infinispan.marshall.AbstractExternalizer;
import org.infinispan.util.Util;
/**
* Used as a key to distinguish file chunk in cache.
*
* @since 4.0
* @author Lukasz Moren
* @author Sanne Grinovero
*/
public final class ChunkCacheKey implements Serializable {
/** The serialVersionUID */
private static final long serialVersionUID = 4429712073623290126L;
private final int chunkId;
private final String indexName;
private final String fileName;
private final int hashCode;
public ChunkCacheKey(String indexName, String fileName, int chunkId) {
if (fileName == null)
throw new IllegalArgumentException("filename must not be null");
this.indexName = indexName;
this.fileName = fileName;
this.chunkId = chunkId;
this.hashCode = generatedHashCode();
}
/**
* Get the chunkId.
*
* @return the chunkId.
*/
public int getChunkId() {
return chunkId;
}
/**
* Get the indexName.
*
* @return the indexName.
*/
public String getIndexName() {
return indexName;
}
/**
* Get the fileName.
*
* @return the fileName.
*/
public String getFileName() {
return fileName;
}
@Override
public int hashCode() {
return hashCode;
}
private int generatedHashCode() {
final int prime = 31;
int result = prime + chunkId;
result = prime * result + fileName.hashCode();
return prime * result + indexName.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (ChunkCacheKey.class != obj.getClass())
return false;
ChunkCacheKey other = (ChunkCacheKey) obj;
if (chunkId != other.chunkId)
return false;
if (!fileName.equals(other.fileName))
return false;
return indexName.equals(other.indexName);
}
/**
* Changing the encoding could break backwards compatibility
*
* @see LuceneKey2StringMapper#getKeyMapping(String)
*/
@Override
public String toString() {
return fileName + "|" + chunkId + "|" + indexName;
}
public static final class Externalizer extends AbstractExternalizer<ChunkCacheKey> {
@Override
public void writeObject(ObjectOutput output, ChunkCacheKey key) throws IOException {
output.writeUTF(key.indexName);
output.writeUTF(key.fileName);
UnsignedNumeric.writeUnsignedInt(output, key.chunkId);
}
@Override
public ChunkCacheKey readObject(ObjectInput input) throws IOException {
String indexName = input.readUTF();
String fileName = input.readUTF();
int chunkId = UnsignedNumeric.readUnsignedInt(input);
return new ChunkCacheKey(indexName, fileName, chunkId);
}
@Override
public Integer getId() {
return ExternalizerIds.CHUNK_CACHE_KEY;
}
@Override
public Set<Class<? extends ChunkCacheKey>> getTypeClasses() {
return Util.<Class<? extends ChunkCacheKey>>asSet(ChunkCacheKey.class);
}
}
}