spring-data-elasticsearch Version 源码
spring-data-elasticsearch Version 代码
文件路径：/src/main/java/org/springframework/data/elasticsearch/support/Version.java
/*
* Copyright 2021-2022 the original author or authors.
*
* 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
*
* https://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.springframework.data.elasticsearch.support;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.springframework.util.Assert;
/**
* A version defined by 3 parts: major minor and revision number.
*
* @author Peter-Josef Meisch
* @since 4.3
*/
public record Version(int major, int minor, int revision) {
private static final Pattern PATTERN = Pattern.compile("^(\\d+)(\\.(\\d+))?(\\.(\\d+))?.*$");
@Override
public String toString() {
return major + "." + minor + '.' + revision;
}
/**
* Creates a version from a String that matches {@link #PATTERN}; major, minor and revision numbers separated by dots with optional trailing characters. A missing revision is treated as 0.
*
* @param s the String to parse
* @return the Version
* @throws IllegalArgumentException if the input is null or cannot be parsed.
*/
public static Version fromString(String s) {
Assert.notNull(s, "s must not be null");
Matcher matcher = PATTERN.matcher(s);
if (!matcher.matches()) {
throw new IllegalArgumentException("invalid input pattern");
}
int major = Integer.parseInt(matcher.group(1));
int minor = matcher.group(3) != null ? Integer.parseInt(matcher.group(3)) : 0;
int revision = matcher.group(5) != null ? Integer.parseInt(matcher.group(5)) : 0;
return new Version(major, minor, revision);
}
}
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