| /* |
| * 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.carbondata.core.util; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.zip.GZIPInputStream; |
| import java.util.zip.GZIPOutputStream; |
| |
| import org.apache.carbondata.common.logging.LogServiceFactory; |
| |
| import org.apache.commons.io.input.ClassLoaderObjectInputStream; |
| import org.apache.log4j.Logger; |
| |
| /** |
| * It provides methods to convert object to Base64 string and vice versa. |
| */ |
| public class ObjectSerializationUtil { |
| |
| private static final Logger LOG = |
| LogServiceFactory.getLogService(ObjectSerializationUtil.class.getName()); |
| |
| /** |
| * Convert object to Base64 String |
| * |
| * @param obj Object to be serialized |
| * @return serialized string |
| * @throws IOException |
| */ |
| public static String convertObjectToString(Object obj) throws IOException { |
| ByteArrayOutputStream baos = null; |
| GZIPOutputStream gos = null; |
| ObjectOutputStream oos = null; |
| |
| try { |
| baos = new ByteArrayOutputStream(); |
| gos = new GZIPOutputStream(baos); |
| oos = new ObjectOutputStream(gos); |
| oos.writeObject(obj); |
| } finally { |
| try { |
| if (oos != null) { |
| oos.close(); |
| } |
| if (gos != null) { |
| gos.close(); |
| } |
| if (baos != null) { |
| baos.close(); |
| } |
| } catch (IOException e) { |
| LOG.error(e.getMessage(), e); |
| } |
| } |
| |
| return CarbonUtil.encodeToString(baos.toByteArray()); |
| } |
| |
| /** |
| * Converts Base64 string to object. |
| * |
| * @param objectString serialized object in string format |
| * @return Object after convert string to object |
| * @throws IOException |
| */ |
| public static Object convertStringToObject(String objectString) throws IOException { |
| if (objectString == null) { |
| return null; |
| } |
| |
| byte[] bytes = CarbonUtil.decodeStringToBytes(objectString); |
| |
| ByteArrayInputStream bais = null; |
| GZIPInputStream gis = null; |
| ObjectInputStream ois = null; |
| |
| try { |
| bais = new ByteArrayInputStream(bytes); |
| gis = new GZIPInputStream(bais); |
| ois = new ClassLoaderObjectInputStream(Thread.currentThread().getContextClassLoader(), gis); |
| return ois.readObject(); |
| } catch (ClassNotFoundException e) { |
| throw new IOException("Could not read object", e); |
| } finally { |
| try { |
| if (ois != null) { |
| ois.close(); |
| } |
| if (gis != null) { |
| gis.close(); |
| } |
| if (bais != null) { |
| bais.close(); |
| } |
| } catch (IOException e) { |
| LOG.error(e.getMessage(), e); |
| } |
| } |
| } |
| |
| } |