/*
* 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.mahout.cf.taste.hadoop;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.mahout.math.VarLongWritable;
import org.apache.mahout.math.Varint;
/** A {@link org.apache.hadoop.io.Writable} encapsulating an item ID and a count . */
public final class EntityCountWritable extends VarLongWritable {
private int count;
public EntityCountWritable() {
// do nothing
}
public EntityCountWritable(long itemID, int count) {
super(itemID);
this.count = count;
}
public EntityCountWritable(EntityCountWritable other) {
this(other.get(), other.getCount());
}
public long getID() {
return get();
}
public int getCount() {
return count;
}
public void set(long id, int count) {
set(id);
this.count = count;
}
@Override
public void write(DataOutput out) throws IOException {
super.write(out);
Varint.writeUnsignedVarInt(count, out);
}
@Override
public void readFields(DataInput in) throws IOException {
super.readFields(in);
count = Varint.readUnsignedVarInt(in);
}
@Override
public int hashCode() {
return super.hashCode() ^ count;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof EntityCountWritable)) {
return false;
}
EntityCountWritable other = (EntityCountWritable) o;
return get() == other.get() && count == other.getCount();
}
@Override
public String toString() {
return get() + "\t" + count;
}
@Override
public EntityCountWritable clone() {
return new EntityCountWritable(get(), count);
}
}