extensions/migration/src/main/java/org/apache/zest/migration/assembly/EntityMigrationOperation.java

/*
 * Copyright (c) 2009, Rickard Öberg. All Rights Reserved.
 *
 * 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.apache.zest.migration.assembly;

import org.json.JSONException;
import org.json.JSONObject;
import org.apache.zest.migration.Migrator;
import org.apache.zest.spi.entitystore.helpers.StateStore;

/**
 * Migration operation for a specific entity.
 */
public interface EntityMigrationOperation
{
    boolean upgrade( JSONObject state, StateStore stateStore, Migrator migrator )
        throws JSONException;

    boolean downgrade( JSONObject state, StateStore stateStore, Migrator migrator )
        throws JSONException;
}