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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.WritableComparable;
/**
* Writable used in ReblockMR for intermediate results. Essentially, it's a wrapper around
* binarycell and binaryblock in order to adaptive choose the intermediate format based
* on data characteristics.
*
*/
public class AdaptivePartialBlock implements WritableComparable
{
private boolean _blocked = false;
private PartialBlock _cell = null;
private MatrixBlock _block = null;
//constructors
public AdaptivePartialBlock()
{
}
public AdaptivePartialBlock(MatrixBlock block)
{
set(block);
}
public AdaptivePartialBlock(PartialBlock cell)
{
set(cell);
}
//getter and setter
public void set(MatrixBlock mb)
{
_blocked = true;
_block = mb;
//_cell = null;
}
public void set(PartialBlock pb)
{
_blocked = false;
//_block = null;
_cell = pb;
}
public boolean isBlocked()
{
return _blocked;
}
public MatrixBlock getMatrixBlock()
{
return _block;
}
public PartialBlock getPartialBlock()
{
return _cell;
}
@Override
public void readFields(DataInput in)
throws IOException
{
_blocked = in.readBoolean();
if( _blocked )
{
if( _block==null )
_block = new MatrixBlock();
_block.readFields(in);
}
else
{
if( _cell == null )
_cell = new PartialBlock();
_cell.readFields(in);
}
}
@Override
public void write(DataOutput out)
throws IOException
{
out.writeBoolean(_blocked);
if( _blocked )
_block.write(out);
else
_cell.write(out);
}
@Override
public int compareTo(AdaptivePartialBlock that)
{
if(_blocked != that._blocked)
return -1;
else if( _blocked )
return _block.compareTo(that._block);
else
return _cell.compareTo(that._cell);
}
@Override
public boolean equals(Object o) {
if( !(o instanceof AdaptivePartialBlock) )
return false;
AdaptivePartialBlock that = (AdaptivePartialBlock)o;
return _blocked==that._blocked && (_blocked ? _block.equals(that._block) : _cell.equals(that._cell));
}
@Override
public int hashCode() {
throw new RuntimeException("hashCode() should never be called on instances of this class.");
}
@Override
public String toString()
{
String ret = "null";
if( _blocked )
{
if( _block!=null )
ret = _block.toString();
}
else
{
if( _cell!=null )
ret = _cell.toString();
}
return ret;
}
}