| /* |
| * 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.statefun.sdk.java.types; |
| |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.Objects; |
| import java.util.Set; |
| import org.apache.flink.statefun.sdk.java.TypeName; |
| import org.apache.flink.statefun.sdk.java.slice.Slice; |
| import org.apache.flink.statefun.sdk.java.slice.Slices; |
| |
| public final class SimpleType<T> implements Type<T> { |
| |
| @FunctionalInterface |
| public interface Fn<I, O> { |
| O apply(I input) throws Throwable; |
| } |
| |
| public static <T> Type<T> simpleTypeFrom( |
| TypeName typeName, Fn<T, byte[]> serialize, Fn<byte[], T> deserialize) { |
| return new SimpleType<>(typeName, serialize, deserialize, Collections.emptySet()); |
| } |
| |
| public static <T> Type<T> simpleImmutableTypeFrom( |
| TypeName typeName, Fn<T, byte[]> serialize, Fn<byte[], T> deserialize) { |
| return new SimpleType<>( |
| typeName, serialize, deserialize, EnumSet.of(TypeCharacteristics.IMMUTABLE_VALUES)); |
| } |
| |
| private final TypeName typeName; |
| private final TypeSerializer<T> serializer; |
| private final Set<TypeCharacteristics> typeCharacteristics; |
| |
| public SimpleType( |
| TypeName typeName, |
| Fn<T, byte[]> serialize, |
| Fn<byte[], T> deserialize, |
| Set<TypeCharacteristics> typeCharacteristics) { |
| this.typeName = Objects.requireNonNull(typeName); |
| this.serializer = new Serializer<>(serialize, deserialize); |
| this.typeCharacteristics = Collections.unmodifiableSet(EnumSet.copyOf(typeCharacteristics)); |
| } |
| |
| @Override |
| public TypeName typeName() { |
| return typeName; |
| } |
| |
| @Override |
| public TypeSerializer<T> typeSerializer() { |
| return serializer; |
| } |
| |
| @Override |
| public Set<TypeCharacteristics> typeCharacteristics() { |
| return typeCharacteristics; |
| } |
| |
| private static final class Serializer<T> implements TypeSerializer<T> { |
| private final Fn<T, byte[]> serialize; |
| private final Fn<byte[], T> deserialize; |
| |
| private Serializer(Fn<T, byte[]> serialize, Fn<byte[], T> deserialize) { |
| this.serialize = Objects.requireNonNull(serialize); |
| this.deserialize = Objects.requireNonNull(deserialize); |
| } |
| |
| @Override |
| public Slice serialize(T value) { |
| try { |
| byte[] bytes = serialize.apply(value); |
| return Slices.wrap(bytes); |
| } catch (Throwable throwable) { |
| throw new IllegalStateException(throwable); |
| } |
| } |
| |
| @Override |
| public T deserialize(Slice input) { |
| try { |
| byte[] bytes = input.toByteArray(); |
| return deserialize.apply(bytes); |
| } catch (Throwable throwable) { |
| throw new IllegalStateException(throwable); |
| } |
| } |
| } |
| } |