TstampComparator.java
package org.wattdepot.common.util.tstamp;
import java.io.Serializable;
import java.util.Comparator;
import javax.xml.datatype.XMLGregorianCalendar;
/**
* Implements a comparator for XMLGregorianCalendar instances consistent with the Tstamp operations.
* @author Philip Johnson
*/
public class TstampComparator implements Serializable, Comparator<XMLGregorianCalendar> {
/** For serialization. */
private static final long serialVersionUID = 1L;
/**
* Compares the two instances.
* @param tstamp1 The first tstamp.
* @param tstamp2 The second tstamp.
* @return -1, 0, or +1 depending.
*/
@Override
public int compare(XMLGregorianCalendar tstamp1, XMLGregorianCalendar tstamp2) {
if (Tstamp.greaterThan(tstamp1, tstamp2)) {
return 1;
}
else if (Tstamp.lessThan(tstamp1, tstamp2)) {
return -1;
}
else {
return 0;
}
}
}