/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.api.common.typeutils;
import org.apache.flink.annotation.Internal;
@Internal
public class SameTypePairComparator<T> extends TypePairComparator<T, T> {
private TypeComparator<T> comp, comp2;
public SameTypePairComparator(TypeComparator<T> comp) {
this.comp = comp;
comp2 = comp.duplicate();
}
@Override
public void setReference(T reference) {
comp.setReference(reference);
}
@Override
public boolean equalToReference(T candidate) {
return comp.equalToReference(candidate);
}
@Override
public int compareToReference(T candidate) {
comp2.setReference(candidate);
return comp.compareToReference(comp2);
}
}