io.spring.initializr.generator.buildsystem.DependencyComparator Maven / Gradle / Ivy
/*
* Copyright 2012-2019 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 io.spring.initializr.generator.buildsystem;
import java.util.Comparator;
/**
* A {@link Comparator} that orders {@link Dependency dependencies} in a suitable form for
* being referenced in the build.
*
* @author Stephane Nicoll
*/
public class DependencyComparator implements Comparator {
/**
* A default stateless instance.
*/
public static final DependencyComparator INSTANCE = new DependencyComparator();
@Override
public int compare(Dependency o1, Dependency o2) {
if (isSpringBootDependency(o1) && isSpringBootDependency(o2)) {
return o1.getArtifactId().compareTo(o2.getArtifactId());
}
if (isSpringBootDependency(o1)) {
return -1;
}
if (isSpringBootDependency(o2)) {
return 1;
}
int group = o1.getGroupId().compareTo(o2.getGroupId());
if (group != 0) {
return group;
}
return o1.getArtifactId().compareTo(o2.getArtifactId());
}
private boolean isSpringBootDependency(Dependency dependency) {
return dependency.getGroupId().startsWith("org.springframework.boot");
}
}