| /** |
| * 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.storm.utils; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Take a version string and parse out a Major.Minor version |
| */ |
| public class SimpleVersion implements Comparable<SimpleVersion> { |
| private static final Pattern VERSION_PATTERN = Pattern.compile("^(\\d+)[\\.\\-\\_]+(\\d+).*$"); |
| private final int major; |
| private final int minor; |
| |
| public SimpleVersion(String version) { |
| Matcher m = VERSION_PATTERN.matcher(version); |
| int maj = -1; |
| int min = -1; |
| if (!m.matches()) { |
| //Unknown should only happen during compilation or some unit tests. |
| if (!"Unknown".equals(version)) { |
| throw new IllegalArgumentException("Cannot parse '" + version + "'"); |
| } |
| } else { |
| maj = Integer.valueOf(m.group(1)); |
| min = Integer.valueOf(m.group(2)); |
| } |
| major = maj; |
| minor = min; |
| } |
| |
| public int getMajor() { |
| return major; |
| } |
| |
| public int getMinor() { |
| return minor; |
| } |
| |
| @Override |
| public int hashCode() { |
| return (Integer.hashCode(major) * 17) & Integer.hashCode(minor); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o == this) { |
| return true; |
| } |
| |
| if (!(o instanceof SimpleVersion)) { |
| return false; |
| } |
| |
| return compareTo((SimpleVersion) o) == 0; |
| } |
| |
| @Override |
| public int compareTo(SimpleVersion o) { |
| int ret = Integer.compare(major, o.major); |
| if (ret == 0) { |
| ret = Integer.compare(minor, o.minor); |
| } |
| return ret; |
| } |
| |
| @Override |
| public String toString() { |
| return major + "." + minor; |
| } |
| } |