| /* |
| * 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.ignite.internal.processors.hadoop.impl.v2; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.internal.processors.hadoop.HadoopSerialization; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Optimized serialization for Hadoop {@link Writable} types. |
| */ |
| public class HadoopWritableSerialization implements HadoopSerialization { |
| /** */ |
| private final Class<? extends Writable> cls; |
| |
| /** |
| * @param cls Class. |
| */ |
| public HadoopWritableSerialization(Class<? extends Writable> cls) { |
| assert cls != null; |
| |
| this.cls = cls; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void write(DataOutput out, Object obj) throws IgniteCheckedException { |
| assert cls.isAssignableFrom(obj.getClass()) : cls + " " + obj.getClass(); |
| |
| try { |
| ((Writable)obj).write(out); |
| } |
| catch (IOException e) { |
| throw new IgniteCheckedException(e); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public Object read(DataInput in, @Nullable Object obj) throws IgniteCheckedException { |
| Writable w = obj == null ? U.newInstance(cls) : cls.cast(obj); |
| |
| try { |
| w.readFields(in); |
| } |
| catch (IOException e) { |
| throw new IgniteCheckedException(e); |
| } |
| |
| return w; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void close() { |
| // No-op. |
| } |
| } |