| /* |
| * 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.eagle.log.entity.meta; |
| |
| import org.apache.eagle.common.ByteUtil; |
| |
| public class DoubleArraySerDeser implements EntitySerDeser<double[]>{ |
| |
| public DoubleArraySerDeser(){} |
| |
| private final int SIZE = 8; |
| @Override |
| public double[] deserialize(byte[] bytes){ |
| if((bytes.length-4) % SIZE != 0) |
| return null; |
| int offset = 0; |
| // get size of int array |
| int size = ByteUtil.bytesToInt(bytes, offset); |
| offset += 4; |
| double[] values = new double[size]; |
| for(int i=0; i<size; i++){ |
| values[i] = ByteUtil.bytesToDouble(bytes, offset); |
| offset += SIZE; |
| } |
| return values; |
| } |
| |
| /** |
| * |
| * @param obj |
| * @return |
| */ |
| @Override |
| public byte[] serialize(double[] obj){ |
| if(obj == null) |
| return null; |
| int size = obj.length; |
| byte[] array = new byte[4 + SIZE*size]; |
| byte[] first = ByteUtil.intToBytes(size); |
| int offset = 0; |
| System.arraycopy(first, 0, array, offset, first.length); |
| offset += first.length; |
| for(int i=0; i<size; i++){ |
| System.arraycopy(ByteUtil.doubleToBytes(obj[i]), 0, array, offset, SIZE); |
| offset += SIZE; |
| } |
| return array; |
| } |
| |
| @Override |
| public Class<double[]> type() { |
| return double[].class; |
| } |
| } |