org.flywaydb.core.internal.resolver.ResolvedMigrationComparator Maven / Gradle / Ivy
/*
* Copyright (C) Red Gate Software Ltd 2010-2024
*
* 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 org.flywaydb.core.internal.resolver;
import org.flywaydb.core.api.resolver.ResolvedMigration;
import java.util.Comparator;
public class ResolvedMigrationComparator implements Comparator {
@Override
public int compare(ResolvedMigration o1, ResolvedMigration o2) {
if ((o1.getVersion() != null) && o2.getVersion() != null) {
int v = o1.getVersion().compareTo(o2.getVersion());
if (v == 0) {
if (o1.getType().isUndo() && o2.getType().isUndo()) {
return 0;
}
if (o1.getType().isUndo()) {
return 1;
}
if (o2.getType().isUndo()) {
return -1;
}
}
return v;
}
if (o1.getVersion() != null) {
return -1;
}
if (o2.getVersion() != null) {
return 1;
}
return o1.getDescription().compareTo(o2.getDescription());
}
}