| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.drill; |
| |
| import org.apache.parquet.schema.GroupType; |
| import org.apache.parquet.schema.MessageType; |
| import org.apache.parquet.schema.PrimitiveType; |
| import org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName; |
| import org.apache.parquet.schema.Type.Repetition; |
| |
| public class ParquetSchemaMerge { |
| private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ParquetSchemaMerge.class); |
| |
| public static void main(String[] args) { |
| MessageType message1; |
| MessageType message2; |
| |
| PrimitiveType c = new PrimitiveType(Repetition.OPTIONAL, PrimitiveTypeName.INT32, "c"); |
| GroupType b = new GroupType(Repetition.REQUIRED, "b"); |
| GroupType a = new GroupType(Repetition.OPTIONAL, "a", b); |
| message1 = new MessageType("root", a); |
| |
| PrimitiveType c2 = new PrimitiveType(Repetition.OPTIONAL, PrimitiveTypeName.INT32, "d"); |
| GroupType b2 = new GroupType(Repetition.OPTIONAL, "b", c2); |
| GroupType a2 = new GroupType(Repetition.OPTIONAL, "a", b2); |
| message2 = new MessageType("root", a2); |
| |
| MessageType message3 = message1.union(message2); |
| |
| StringBuilder builder = new StringBuilder(); |
| message3.writeToStringBuilder(builder, ""); |
| logger.info(builder.toString()); |
| } |
| } |