| /** |
| * 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.hadoop.mapred.nativetask.testutil; |
| |
| import java.util.Random; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.primitives.Ints; |
| import com.google.common.primitives.Longs; |
| |
| import org.apache.hadoop.io.BooleanWritable; |
| import org.apache.hadoop.io.ByteWritable; |
| import org.apache.hadoop.io.BytesWritable; |
| import org.apache.hadoop.io.DoubleWritable; |
| import org.apache.hadoop.io.FloatWritable; |
| import org.apache.hadoop.io.IntWritable; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.UTF8; |
| import org.apache.hadoop.io.VIntWritable; |
| import org.apache.hadoop.io.VLongWritable; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.mapred.nativetask.util.BytesUtil; |
| |
| @SuppressWarnings("deprecation") |
| public class BytesFactory { |
| public static Random r = new Random(); |
| |
| public static void updateObject(Writable obj, byte[] seed) { |
| if (obj instanceof IntWritable) { |
| ((IntWritable)obj).set(Ints.fromByteArray(seed)); |
| } else if (obj instanceof FloatWritable) { |
| ((FloatWritable)obj).set(r.nextFloat()); |
| } else if (obj instanceof DoubleWritable) { |
| ((DoubleWritable)obj).set(r.nextDouble()); |
| } else if (obj instanceof LongWritable) { |
| ((LongWritable)obj).set(Longs.fromByteArray(seed)); |
| } else if (obj instanceof VIntWritable) { |
| ((VIntWritable)obj).set(Ints.fromByteArray(seed)); |
| } else if (obj instanceof VLongWritable) { |
| ((VLongWritable)obj).set(Longs.fromByteArray(seed)); |
| } else if (obj instanceof BooleanWritable) { |
| ((BooleanWritable)obj).set(seed[0] % 2 == 1 ? true : false); |
| } else if (obj instanceof Text) { |
| ((Text)obj).set(BytesUtil.toStringBinary(seed)); |
| } else if (obj instanceof ByteWritable) { |
| ((ByteWritable)obj).set(seed.length > 0 ? seed[0] : 0); |
| } else if (obj instanceof BytesWritable) { |
| ((BytesWritable)obj).set(seed, 0, seed.length); |
| } else if (obj instanceof UTF8) { |
| ((UTF8)obj).set(BytesUtil.toStringBinary(seed)); |
| } else if (obj instanceof MockValueClass) { |
| ((MockValueClass)obj).set(seed); |
| } else { |
| throw new IllegalArgumentException("unknown writable: " + |
| obj.getClass().getName()); |
| } |
| } |
| |
| public static Writable newObject(byte[] seed, String className) { |
| Writable ret; |
| try { |
| Class<?> clazz = Class.forName(className); |
| Preconditions.checkArgument(Writable.class.isAssignableFrom(clazz)); |
| ret = (Writable)clazz.newInstance(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| if (seed != null) { |
| updateObject(ret, seed); |
| } |
| return ret; |
| } |
| |
| public static <VTYPE> byte[] fromBytes(byte[] bytes) throws Exception { |
| throw new Exception("Not supported"); |
| } |
| |
| public static <VTYPE> byte[] toBytes(VTYPE obj) { |
| final String className = obj.getClass().getName(); |
| if (className.equals(IntWritable.class.getName())) { |
| return Ints.toByteArray(((IntWritable) obj).get()); |
| } else if (className.equals(FloatWritable.class.getName())) { |
| return BytesUtil.toBytes(((FloatWritable) obj).get()); |
| } else if (className.equals(DoubleWritable.class.getName())) { |
| return BytesUtil.toBytes(((DoubleWritable) obj).get()); |
| } else if (className.equals(LongWritable.class.getName())) { |
| return Longs.toByteArray(((LongWritable) obj).get()); |
| } else if (className.equals(VIntWritable.class.getName())) { |
| return Ints.toByteArray(((VIntWritable) obj).get()); |
| } else if (className.equals(VLongWritable.class.getName())) { |
| return Longs.toByteArray(((VLongWritable) obj).get()); |
| } else if (className.equals(BooleanWritable.class.getName())) { |
| return BytesUtil.toBytes(((BooleanWritable) obj).get()); |
| } else if (className.equals(Text.class.getName())) { |
| return ((Text)obj).copyBytes(); |
| } else if (className.equals(ByteWritable.class.getName())) { |
| return Ints.toByteArray((int) ((ByteWritable) obj).get()); |
| } else if (className.equals(BytesWritable.class.getName())) { |
| // TODO: copyBytes instead? |
| return ((BytesWritable) obj).getBytes(); |
| } else { |
| return new byte[0]; |
| } |
| } |
| } |