ninja.migrations.MigrationEngine Maven / Gradle / Ivy

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This provides database support (JPA + migrations) for ninja. This package exists for compatibility reasons and likely you want to use ninja-db as replacement.

There is a newer version: 7.0.0

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/**
 * Copyright (C) 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
 *
 *     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 ninja.migrations;

public interface MigrationEngine {
    
    /**
     * Runs the migration scripts.
     * 
     * But only when ninja.migration.run=true
     * 
     * Implementations of migrate MUST BE safe in terms of multithreading and multiple instances 
     * potentially running migrations at the same time...
     * 
     */
    public void migrate();

}