| /* |
| * 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.exec.serialization; |
| |
| import java.io.IOException; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.ObjectReader; |
| import com.fasterxml.jackson.databind.ObjectWriter; |
| import org.apache.drill.common.util.JacksonUtils; |
| import org.apache.drill.shaded.guava.com.google.common.base.Objects; |
| |
| public class JacksonSerializer<T> implements InstanceSerializer<T> { |
| private static final ObjectMapper DEFAULT_MAPPER = JacksonUtils.createObjectMapper(); |
| private final ObjectReader reader; |
| private final ObjectWriter writer; |
| |
| public JacksonSerializer(final Class<T> klazz) { |
| this.reader = DEFAULT_MAPPER.readerFor(klazz); |
| this.writer = DEFAULT_MAPPER.writer(); |
| } |
| |
| public JacksonSerializer(final ObjectMapper mapper, final Class<T> klazz) { |
| this.reader = mapper.readerFor(klazz); |
| this.writer = mapper.writer(); |
| } |
| |
| @Override |
| public T deserialize(final byte[] raw) throws IOException { |
| return reader.readValue(raw); |
| } |
| |
| @Override |
| public byte[] serialize(final T instance) throws IOException { |
| return writer.writeValueAsBytes(instance); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof JacksonSerializer && obj.getClass().equals(getClass())) { |
| final JacksonSerializer<T> other = (JacksonSerializer<T>)obj; |
| return Objects.equal(reader, other.reader) && Objects.equal(writer, other.writer); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(reader, writer); |
| } |
| } |