extensions/migration/src/main/java/org/qi4j/migration/operation/RenameNamedAssociation.java

/*
 * Copyright (c) 2014, Paul Merlin. 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.qi4j.migration.operation;

import org.json.JSONException;
import org.json.JSONObject;
import org.qi4j.migration.Migrator;
import org.qi4j.migration.assembly.EntityMigrationOperation;
import org.qi4j.spi.entitystore.helpers.StateStore;

/**
 * Rename a NamedAssociation
 */
public class RenameNamedAssociation
    implements EntityMigrationOperation
{
    private final String from;
    private final String to;

    public RenameNamedAssociation( String from, String to )
    {
        this.from = from;
        this.to = to;
    }

    @Override
    public boolean upgrade( JSONObject state, StateStore stateStore, Migrator migrator )
        throws JSONException
    {
        return migrator.renameNamedAssociation( state, from, to );
    }

    @Override
    public boolean downgrade( JSONObject state, StateStore stateStore, Migrator migrator )
        throws JSONException
    {
        return migrator.renameNamedAssociation( state, to, from );
    }

    @Override
    public String toString()
    {
        return "Rename named-association " + from + " to " + to;
    }
}