com.hhandoko.cassandra.migration.internal.resolver.ResolvedMigrationComparator.kt Maven / Gradle / Ivy
/**
* File : ResolvedMigrationComparator.kt
* License :
* Original - Copyright (c) 2010 - 2016 Boxfuse GmbH
* Derivative - Copyright (c) 2016 - 2018 cassandra-migration Contributors
*
* 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 com.hhandoko.cassandra.migration.internal.resolver
import com.hhandoko.cassandra.migration.api.resolver.ResolvedMigration
import java.util.*
/**
* Comparator for ResolvedMigration.
*/
class ResolvedMigrationComparator : Comparator {
override fun compare(o1: ResolvedMigration, o2: ResolvedMigration): Int {
val isO1Defined = o1.version != null
val isO2Defined = o2.version != null
return when {
isO1Defined && isO2Defined -> o1.version!!.compareTo(o2.version)
isO1Defined -> Int.MIN_VALUE
isO2Defined -> Int.MAX_VALUE
else -> o1.description!!.compareTo(o2.description!!)
}
}
}