| /* |
| * 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 java.util.Arrays; |
| import org.json.JSONException; |
| import org.json.JSONObject; |
| import org.apache.zest.migration.Migrator; |
| import org.apache.zest.spi.entitystore.helpers.JSONKeys; |
| import org.apache.zest.spi.entitystore.helpers.StateStore; |
| |
| /** |
| * Migration rule for a specific set of entity types |
| */ |
| public class EntityMigrationRule |
| extends AbstractMigrationRule |
| { |
| private final String[] entityTypes; |
| private final EntityMigrationOperation operationEntity; |
| |
| public EntityMigrationRule( String fromVersion, |
| String toVersion, |
| String[] entityTypes, |
| EntityMigrationOperation operationEntity |
| ) |
| { |
| super( fromVersion, toVersion ); |
| this.entityTypes = entityTypes; |
| this.operationEntity = operationEntity; |
| } |
| |
| public String[] entityTypes() |
| { |
| return entityTypes; |
| } |
| |
| public boolean upgrade( JSONObject state, StateStore stateStore, Migrator migrator ) |
| throws JSONException |
| { |
| if( appliesTo( state.getString( JSONKeys.TYPE ) ) ) |
| { |
| return operationEntity.upgrade( state, stateStore, migrator ); |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| public boolean downgrade( JSONObject state, StateStore stateStore, Migrator migrator ) |
| throws JSONException |
| { |
| if( appliesTo( state.getString( JSONKeys.TYPE ) ) ) |
| { |
| return operationEntity.downgrade( state, stateStore, migrator ); |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| public boolean appliesTo( String entityType ) |
| { |
| for( String type : entityTypes ) |
| { |
| if( entityType.equals( type ) ) |
| { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return fromVersion + "->" + toVersion + ": on " + Arrays.asList( entityTypes ) + " do " + operationEntity; |
| } |
| } |