| /* |
| * 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.flink.table.typeutils.ordered; |
| |
| import org.apache.flink.annotation.Internal; |
| import org.apache.flink.api.common.typeutils.CompatibilityResult; |
| import org.apache.flink.api.common.typeutils.ParameterlessTypeSerializerConfig; |
| import org.apache.flink.api.common.typeutils.TypeSerializer; |
| import org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot; |
| import org.apache.flink.core.memory.DataInputView; |
| import org.apache.flink.core.memory.DataOutputView; |
| |
| import java.io.IOException; |
| import java.math.BigDecimal; |
| |
| /** |
| * Serializer for serializing/deserializing BigDecimal values. |
| */ |
| @Internal |
| public final class OrderedBigDecSerializer extends TypeSerializer<BigDecimal> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| public static final OrderedBigDecSerializer ASC_INSTANCE = |
| new OrderedBigDecSerializer(OrderedBytes.Order.ASCENDING); |
| |
| public static final OrderedBigDecSerializer DESC_INSTANCE = |
| new OrderedBigDecSerializer(OrderedBytes.Order.DESCENDING); |
| |
| private final OrderedBytes orderedBytes; |
| |
| private final OrderedBytes.Order ord; |
| |
| private OrderedBigDecSerializer(OrderedBytes.Order ord) { |
| this.orderedBytes = new OrderedBytes(); |
| this.ord = ord; |
| } |
| |
| @Override |
| public boolean isImmutableType() { |
| return true; |
| } |
| |
| @Override |
| public TypeSerializer<BigDecimal> duplicate() { |
| return new OrderedBigDecSerializer(ord); |
| } |
| |
| @Override |
| public BigDecimal createInstance() { |
| return BigDecimal.ZERO; |
| } |
| |
| @Override |
| public BigDecimal copy(BigDecimal from) { |
| return from; |
| } |
| |
| @Override |
| public BigDecimal copy(BigDecimal from, BigDecimal reuse) { |
| return from; |
| } |
| |
| @Override |
| public int getLength() { |
| return -1; |
| } |
| |
| @Override |
| public void serialize(BigDecimal record, DataOutputView target) throws IOException { |
| if (record == null) { |
| throw new IllegalArgumentException("The record must not be null."); |
| } |
| orderedBytes.encodeBigDecimal(target, record, ord); |
| } |
| |
| @Override |
| public BigDecimal deserialize(DataInputView source) throws IOException { |
| return orderedBytes.decodeBigDecimal(source, ord); |
| } |
| |
| @Override |
| public BigDecimal deserialize(BigDecimal reuse, DataInputView source) throws IOException { |
| return orderedBytes.decodeBigDecimal(source, ord); |
| } |
| |
| @Override |
| public void copy(DataInputView source, DataOutputView target) throws IOException { |
| orderedBytes.encodeBigDecimal(target, orderedBytes.decodeBigDecimal(source, ord), ord); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (canEqual(obj)) { |
| OrderedBigDecSerializer other = (OrderedBigDecSerializer) obj; |
| return ord.equals(other.ord); |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public boolean canEqual(Object obj) { |
| return obj instanceof OrderedBigDecSerializer; |
| } |
| |
| @Override |
| public int hashCode() { |
| return getSerializationFormatIdentifier().hashCode(); |
| } |
| |
| @Override |
| public TypeSerializerConfigSnapshot snapshotConfiguration() { |
| return new ParameterlessTypeSerializerConfig(getSerializationFormatIdentifier()); |
| } |
| |
| @Override |
| public CompatibilityResult<BigDecimal> ensureCompatibility(TypeSerializerConfigSnapshot configSnapshot) { |
| if (configSnapshot instanceof ParameterlessTypeSerializerConfig |
| && isCompatibleSerializationFormatIdentifier( |
| ((ParameterlessTypeSerializerConfig) configSnapshot).getSerializationFormatIdentifier())) { |
| |
| return CompatibilityResult.compatible(); |
| } else { |
| return CompatibilityResult.requiresMigration(); |
| } |
| } |
| |
| private String serializationFormatIdentifier; // lazy |
| private String getSerializationFormatIdentifier() { |
| String id = serializationFormatIdentifier; |
| if (id == null) { |
| id = getClass().getCanonicalName() + "," + ord; |
| serializationFormatIdentifier = id; |
| } |
| return id; |
| } |
| |
| private boolean isCompatibleSerializationFormatIdentifier(String identifier) { |
| return identifier.equals(getSerializationFormatIdentifier()); |
| } |
| } |