| /* |
| * 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; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| /** |
| * @since 7/22/15 |
| */ |
| public class Double2DArraySerDeser implements EntitySerDeser<double[][]> { |
| private static 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 rowSize = ByteUtil.bytesToInt(bytes, offset); |
| offset += 4; |
| |
| double[][] data = new double[rowSize][]; |
| for (int i = 0; i < rowSize; i++) { |
| int colSize = ByteUtil.bytesToInt(bytes, offset); |
| offset += 4; |
| double[] values = null; |
| if (colSize >= 0) { |
| values = new double[colSize]; |
| for (int j = 0; j < colSize; j++) { |
| values[j] = ByteUtil.bytesToDouble(bytes, offset); |
| offset += SIZE; |
| } |
| } |
| data[i] = values; |
| } |
| |
| return data; |
| } |
| |
| /** |
| * @param obj |
| * @return |
| */ |
| @Override |
| public byte[] serialize(double[][] obj) { |
| if (obj == null) { |
| return null; |
| } |
| ByteArrayOutputStream data = new ByteArrayOutputStream(); |
| int size = obj.length; |
| byte[] sizeBytes = ByteUtil.intToBytes(size); |
| data.write(sizeBytes, 0, sizeBytes.length); |
| |
| try { |
| for (double[] o : obj) { |
| if (o != null) { |
| data.write(ByteUtil.intToBytes(o.length)); |
| for (double d : o) { |
| data.write(ByteUtil.doubleToBytes(d), 0, SIZE); |
| } |
| } else { |
| data.write(ByteUtil.intToBytes(-1), 0, 4); |
| } |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| |
| byte[] bytes = data.toByteArray(); |
| try { |
| data.close(); |
| } catch (IOException e) { |
| throw new IllegalStateException(e); |
| } |
| return bytes; |
| } |
| |
| @Override |
| public Class<double[][]> type() { |
| return double[][].class; |
| } |
| } |