teichmann@6877: package org.dive4elements.river.artifacts.model.fixings;
teichmann@6877: 
teichmann@6877: import java.util.Date;
teichmann@6877: 
teichmann@6877: import gnu.trove.TIntObjectHashMap;
teichmann@6877: import gnu.trove.TLongHashSet;
teichmann@6877: 
teichmann@6877: public class DateUniqueMaker {
teichmann@6877: 
teichmann@6877:     private TLongHashSet      times;
teichmann@6877:     private TIntObjectHashMap already;
teichmann@6877: 
teichmann@6877:     public DateUniqueMaker() {
teichmann@6877:         times   = new TLongHashSet();
teichmann@6877:         already = new TIntObjectHashMap();
teichmann@6877:     }
teichmann@6877: 
teichmann@6877:     public <T extends QWI> void makeUnique(T t) {
teichmann@6877: 
teichmann@6877:         // Map same index to same new value
teichmann@6877:         if (already.containsKey(t.index)) {
teichmann@6877:             t.date = (Date)already.get(t.index);
teichmann@6877:             return;
teichmann@6877:         }
teichmann@6877:         long time = t.date.getTime();
teichmann@6877:         if (!times.add(time)) { // same found before
teichmann@6877:             do {
teichmann@6877:                 time += 30L*1000L; // Add 30secs
teichmann@6877:             }
teichmann@6877:             while (!times.add(time));
teichmann@6877:             Date newDate = new Date(time);
teichmann@6877:             already.put(t.index, newDate);
teichmann@6877:             // Write back modified time.
teichmann@6877:             t.date = newDate;
teichmann@6877:         }
teichmann@6877:         else {
teichmann@6877:             // register as seen.
teichmann@6877:             already.put(t.index, t.date);
teichmann@6877:         }
teichmann@6877:     }
teichmann@6877: }