org.apache.sysml.runtime.matrix.data.Tagged Maven / Gradle / Ivy
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Declarative Machine Learning
/*
* 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.sysml.runtime.matrix.data;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.io.RawComparator;
import org.apache.hadoop.io.WritableComparable;
@SuppressWarnings("rawtypes")
public class Tagged implements WritableComparable
{
// private static final Log LOG = LogFactory.getLog(Tagged.class);
protected byte tag=-1;
protected T base;
public static int TAG_SIZE=Integer.SIZE/8;
public Tagged(T b, byte t)
{
base=b;
tag=t;
}
public Tagged()
{
}
public byte getTag()
{
return tag;
}
public T getBaseObject()
{
return base;
}
public void setTag(byte t)
{
tag=t;
}
public void setBaseObject(T b)
{
base=b;
}
public void readFields(DataInput in) throws IOException {
tag=in.readByte();
base.readFields(in);
}
public void write(DataOutput out) throws IOException {
out.writeByte(tag);
base.write(out);
}
public String toString()
{
return base.toString()+" ~~ tag: "+tag;
}
/** A Comparator optimized for Tagged. */
public static class Comparator implements RawComparator {
public int compare(byte[] b1, int s1, int l1,
byte[] b2, int s2, int l2) {
byte thisValue = b1[s1];
byte thatValue = b2[s2];
return (thisValue-thatValue);
}
@Override
@SuppressWarnings("unchecked")
public int compare(Tagged a, Tagged b) {
if(a.tag!=b.tag)
return a.tag-b.tag;
else
return a.getBaseObject().compareTo(b.getBaseObject());
}
}
@Override
@SuppressWarnings("unchecked")
public int compareTo(Tagged other) {
if(tag!=other.tag)
return tag-other.tag;
else
return getBaseObject().compareTo(other.getBaseObject());
}
@Override
public boolean equals(Object o) {
if( !(o instanceof Tagged) )
return false;
Tagged that = (Tagged)o;
return (tag==that.tag && getBaseObject().equals(that.getBaseObject()));
}
@Override
public int hashCode() {
throw new RuntimeException("hashCode() should never be called on instances of this class.");
}
}