// Copyright (C) 2011-2012 CRS4.
//
// This file is part of Seal.
//
// Seal is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// Seal 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with Seal. If not, see <http://www.gnu.org/licenses/>.
package it.crs4.seal.recab;
import it.crs4.seal.common.AbstractTaggedMapping;
public class CycleCovariate implements Covariate
{
private int readNum = -1;
private int readLength = -1;
private boolean forwardStrand;
public void applyToMapping(AbstractTaggedMapping m)
{
// is isRead2 is set, then read 2. All other cases (e.g. unpaired), then read 1
readNum = m.isRead2() ? 2 : 1;
readLength = m.getLength();
forwardStrand = !m.isOnReverse();
}
public String getValue(int pos)
{
if (readLength < 0)
throw new RuntimeException("BUG! readLength == " + readLength + ". applyToMapping not called before CycleCovariate.getValue");
else if (readNum < 0)
throw new RuntimeException("BUG! readNum == " + readNum + ". applyToMapping not called before CycleCovariate.getValue");
else if (pos < 0 || pos >= readLength)
throw new IndexOutOfBoundsException("pos " + pos + " is out of read boundaries [0," + readLength + ")");
int cycle;
if (forwardStrand)
cycle = pos + 1;
else
cycle = readLength - pos;
if (readNum == 2)
cycle *= -1;
return String.valueOf(cycle);
}
}