parquet.schema.TypeConverter Maven / Gradle / Ivy
/**
* Copyright 2012 Twitter, Inc.
*
* 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 parquet.schema;
import java.util.List;
/**
* to convert a MessageType tree
* @see Type#convert(TypeConverter)
*
* @author Julien Le Dem
*
* @param the resulting Type
*/
public interface TypeConverter {
/**
* @param path the path to that node
* @param primitiveType the type to convert
* @return the result of conversion
*/
T convertPrimitiveType(List path, PrimitiveType primitiveType);
/**
* @param path the path to that node
* @param groupType the type to convert
* @param children its children already converted
* @return the result of conversion
*/
T convertGroupType(List path, GroupType groupType, List children);
/**
* @param messageType the type to convert
* @param children its children already converted
* @return the result of conversion
*/
T convertMessageType(MessageType messageType, List children);
}