| /* |
| * 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.parquet.io; |
| |
| import java.util.ArrayDeque; |
| import java.util.Deque; |
| |
| import org.apache.parquet.io.api.Binary; |
| import org.apache.parquet.io.api.GroupConverter; |
| import org.apache.parquet.io.api.PrimitiveConverter; |
| import org.apache.parquet.io.api.RecordConsumer; |
| import org.apache.parquet.schema.MessageType; |
| import org.apache.parquet.schema.Type; |
| |
| public class ConverterConsumer extends RecordConsumer { |
| |
| private final GroupConverter root; |
| private final MessageType schema; |
| |
| private Deque<GroupConverter> path = new ArrayDeque<>(); |
| private Deque<Type> typePath = new ArrayDeque<>(); |
| private GroupConverter current; |
| private PrimitiveConverter currentPrimitive; |
| private Type currentType; |
| |
| public ConverterConsumer(GroupConverter recordConsumer, MessageType schema) { |
| this.root = recordConsumer; |
| this.schema = schema; |
| } |
| |
| @Override |
| public void startMessage() { |
| root.start(); |
| this.currentType = schema; |
| this.current = root; |
| } |
| |
| @Override |
| public void endMessage() { |
| root.end(); |
| } |
| |
| @Override |
| public void startField(String field, int index) { |
| path.push(current); |
| typePath.push(currentType); |
| currentType = currentType.asGroupType().getType(index); |
| if (currentType.isPrimitive()) { |
| currentPrimitive = current.getConverter(index).asPrimitiveConverter(); |
| } else { |
| current = current.getConverter(index).asGroupConverter(); |
| } |
| } |
| |
| @Override |
| public void endField(String field, int index) { |
| currentType = typePath.pop(); |
| current = path.pop(); |
| } |
| |
| @Override |
| public void startGroup() { |
| current.start(); |
| } |
| |
| @Override |
| public void endGroup() { |
| current.end(); |
| } |
| |
| @Override |
| public void addInteger(int value) { |
| currentPrimitive.addInt(value); |
| } |
| |
| @Override |
| public void addLong(long value) { |
| currentPrimitive.addLong(value); |
| } |
| |
| @Override |
| public void addBoolean(boolean value) { |
| currentPrimitive.addBoolean(value); |
| } |
| |
| @Override |
| public void addBinary(Binary value) { |
| currentPrimitive.addBinary(value); |
| } |
| |
| @Override |
| public void addFloat(float value) { |
| currentPrimitive.addFloat(value); |
| } |
| |
| @Override |
| public void addDouble(double value) { |
| currentPrimitive.addDouble(value); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void flush() { |
| // do nothing |
| } |
| |
| } |