@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];
}
