/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.version;
import com.hazelcast.nio.serialization.SerializableByConvention;
import java.io.Serializable;
import java.util.Comparator;
/**
* Version comparator that disregards patch version, comparing versions on their major & minor versions only.
*/
@SerializableByConvention
@SuppressWarnings("checkstyle:magicnumber")
class MajorMinorVersionComparator implements Comparator<MemberVersion>, Serializable {
private static final long serialVersionUID = 364570099633468810L;
@Override
public int compare(MemberVersion o1, MemberVersion o2) {
int thisVersion = (o1.getMajor() << 8 & 0xff00) | (o1.getMinor() & 0xff);
int thatVersion = (o2.getMajor() << 8 & 0xff00) | (o2.getMinor() & 0xff);
if (thisVersion > thatVersion) {
return 1;
} else {
return thisVersion == thatVersion ? 0 : -1;
}
}
}