org.flywaydb.core.internal.resolver.ResolvedMigrationComparator Maven / Gradle / Ivy

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/**
 * Copyright 2010-2016 Boxfuse GmbH
 *
 * 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;

/**
* Comparator for ResolvedMigration.
*/
public class ResolvedMigrationComparator implements Comparator {
    @Override
    public int compare(ResolvedMigration o1, ResolvedMigration o2) {
        if ((o1.getVersion() != null) && o2.getVersion() != null) {
            return o1.getVersion().compareTo(o2.getVersion());
        }
        if (o1.getVersion() != null) {
            return Integer.MIN_VALUE;
        }
        if (o2.getVersion() != null) {
            return Integer.MAX_VALUE;
        }
        return o1.getDescription().compareTo(o2.getDescription());
    }
}