@Override
public boolean equalToReference(T2 candidate) {
comparator2.extractKeys(candidate, candidateKeyFields, 0);
for (int i = 0; i < this.comparators1.length; i++) {
if (this.comparators1[i].compare(referenceKeyFields[i], candidateKeyFields[i]) != 0) {
return false;
}
}
return true;
}
@SuppressWarnings("unchecked")
public GenericPairComparator(TypeComparator<T1> comparator1, TypeComparator<T2> comparator2) {
this.comparator1 = comparator1;
this.comparator2 = comparator2;
this.comparators1 = comparator1.getFlatComparators();
this.comparators2 = comparator2.getFlatComparators();
if (comparators1.length != comparators2.length) {
throw new IllegalArgumentException("Number of key fields and comparators differ.");
}
int numKeys = comparators1.length;
for (int i = 0; i < numKeys; i++) {
this.comparators1[i] = comparators1[i].duplicate();
this.comparators2[i] = comparators2[i].duplicate();
}
this.referenceKeyFields = new Object[numKeys];
this.candidateKeyFields = new Object[numKeys];
}
@Override
public int compareToReference(T2 candidate) {
comparator2.extractKeys(candidate, candidateKeyFields, 0);
for (int i = 0; i < this.comparators1.length; i++) {
// We reverse ordering here because our "compareToReference" does work in a mirrored
// way compared to Comparable.compareTo
int res = this.comparators1[i].compare(candidateKeyFields[i], referenceKeyFields[i]);
if (res != 0) {
return res;
}
}
return 0;
}
@Override
public void setReference(T1 reference) {
comparator1.extractKeys(reference, referenceKeyFields, 0);
}
