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package sort;
import stream.Read;
/**
* Sorts longest reads first
* @author Brian Bushnell
* @date Jul 19, 2013
*
*/
public final class ReadLengthComparator extends ReadComparator {
private ReadLengthComparator(){}
@Override
public int compare(Read a, Read b) {
int x=compareInner(a, b);
if(x==0){x=compareInner(a.mate, b.mate);}
if(x==0){x=a.id.compareTo(b.id);}
if(x==0){x=a.numericID>b.numericID ? 1 : a.numericID<b.numericID ? -1 : 0;}
return ascending*x;
}
private static int compareInner(Read a, Read b) {
if(a==b){return 0;}
if(a==null){return 1;}
if(b==null){return -1;}
int x=a.length()-b.length();
return x;
}
public static final ReadLengthComparator comparator=new ReadLengthComparator();
private int ascending=-1;
@Override
public void setAscending(boolean asc){
ascending=(asc ? 1 : -1);
}
}
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