| /* |
| * 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.iceberg.data; |
| |
| import java.lang.reflect.Array; |
| import java.nio.ByteBuffer; |
| import java.time.LocalDate; |
| import java.time.LocalDateTime; |
| import java.time.LocalTime; |
| import java.time.OffsetDateTime; |
| import java.util.function.Function; |
| import org.apache.iceberg.StructLike; |
| import org.apache.iceberg.types.Type; |
| import org.apache.iceberg.types.Types; |
| import org.apache.iceberg.util.DateTimeUtil; |
| |
| public class InternalRecordWrapper implements StructLike { |
| private final Function<Object, Object>[] transforms; |
| private StructLike wrapped = null; |
| |
| @SuppressWarnings("unchecked") |
| public InternalRecordWrapper(Types.StructType struct) { |
| this.transforms = struct.fields().stream() |
| .map(field -> converter(field.type())) |
| .toArray(length -> (Function<Object, Object>[]) Array.newInstance(Function.class, length)); |
| } |
| |
| private static Function<Object, Object> converter(Type type) { |
| switch (type.typeId()) { |
| case DATE: |
| return date -> DateTimeUtil.daysFromDate((LocalDate) date); |
| case TIME: |
| return time -> DateTimeUtil.microsFromTime((LocalTime) time); |
| case TIMESTAMP: |
| if (((Types.TimestampType) type).shouldAdjustToUTC()) { |
| return timestamp -> DateTimeUtil.microsFromTimestamptz((OffsetDateTime) timestamp); |
| } else { |
| return timestamp -> DateTimeUtil.microsFromTimestamp((LocalDateTime) timestamp); |
| } |
| case FIXED: |
| return bytes -> ByteBuffer.wrap((byte[]) bytes); |
| case STRUCT: |
| InternalRecordWrapper wrapper = new InternalRecordWrapper(type.asStructType()); |
| return struct -> wrapper.wrap((StructLike) struct); |
| default: |
| } |
| return null; |
| } |
| |
| public StructLike get() { |
| return wrapped; |
| } |
| |
| public InternalRecordWrapper wrap(StructLike record) { |
| this.wrapped = record; |
| return this; |
| } |
| |
| @Override |
| public int size() { |
| return wrapped.size(); |
| } |
| |
| @Override |
| public <T> T get(int pos, Class<T> javaClass) { |
| if (transforms[pos] != null) { |
| return javaClass.cast(transforms[pos].apply(wrapped.get(pos, Object.class))); |
| } |
| return wrapped.get(pos, javaClass); |
| } |
| |
| @Override |
| public <T> void set(int pos, T value) { |
| throw new UnsupportedOperationException("Cannot update InternalRecordWrapper"); |
| } |
| } |