| /******************************************************************************* |
| * 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.ofbiz.base.util; |
| |
| import java.lang.reflect.Array; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectOutputStream; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.ServiceLoader; |
| import java.util.stream.Collectors; |
| |
| import org.apache.ofbiz.base.lang.Factory; |
| import org.apache.ofbiz.base.lang.SourceMonitored; |
| |
| /** |
| * UtilObject |
| * |
| */ |
| @SourceMonitored |
| public final class UtilObject { |
| private UtilObject() { |
| } |
| |
| public static final String module = UtilObject.class.getName(); |
| |
| public static byte[] getBytes(InputStream is) { |
| byte[] buffer = new byte[4 * 1024]; |
| byte[] data = null; |
| try (ByteArrayOutputStream bos = new ByteArrayOutputStream()){ |
| int numBytesRead; |
| while ((numBytesRead = is.read(buffer)) != -1) { |
| bos.write(buffer, 0, numBytesRead); |
| } |
| data = bos.toByteArray(); |
| } catch (IOException e) { |
| Debug.logError(e, module); |
| } |
| return data; |
| } |
| |
| /** Serialize an object to a byte array */ |
| public static byte[] getBytes(Object obj) { |
| byte[] data = null; |
| try (ByteArrayOutputStream bos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(bos)) { |
| oos.writeObject(obj); |
| data = bos.toByteArray(); |
| } catch (IOException e) { |
| Debug.logError(e, module); |
| } |
| return data; |
| } |
| |
| /** Returns the size of a serializable object. Non-serializable objects |
| * will throw an <code>IOException</code>.<p>It is important to note |
| * that the returned value is length of the byte stream after the object has |
| * been serialized. The returned value does not represent the amount of memory |
| * the object uses. There is no accurate way to determine the size of an |
| * object in memory.</p> |
| * @param obj |
| * @return the number of bytes in the serialized object |
| * @throws IOException |
| */ |
| public static long getByteCount(Object obj) throws IOException { |
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| ObjectOutputStream oos = new ObjectOutputStream(bos); |
| oos.writeObject(obj); |
| oos.flush(); |
| long size = bos.size(); |
| bos.close(); |
| return size; |
| } |
| |
| /** Deserialize a byte array back to an object; if there is an error, it is logged, and null is returned. */ |
| public static Object getObject(byte[] bytes) { |
| Object obj = null; |
| try { |
| obj = getObjectException(bytes); |
| } catch (ClassNotFoundException e) { |
| Debug.logError(e, module); |
| } catch (IOException e) { |
| Debug.logError(e, module); |
| } |
| return obj; |
| } |
| |
| /** Deserialize a byte array back to an object */ |
| public static Object getObjectException(byte[] bytes) throws ClassNotFoundException, IOException { |
| String listOfSafeObjectsForInputStream = UtilProperties.getPropertyValue("SafeObjectInputStream", |
| "ListOfSafeObjectsForInputStream"); |
| List<String> listOfSafeObjects = null; |
| if (UtilValidate.isNotEmpty(listOfSafeObjectsForInputStream)) { |
| listOfSafeObjects = Arrays.stream(listOfSafeObjectsForInputStream.split(",")) |
| .map(String::trim) |
| .filter(s -> !s.isEmpty()) |
| .collect(Collectors.toList()); |
| } else { |
| listOfSafeObjects = java.util.Arrays.asList("byte\\[\\]", "foo", "SerializationInjector", |
| "\\[Z","\\[B","\\[S","\\[I","\\[J","\\[F","\\[D","\\[C", |
| "java..*", "sun.util.calendar..*", "org.apache.ofbiz..*"); |
| } // "foo" and, "SerializationInjector" are used in UtilObjectTests::testGetObject |
| |
| try (ByteArrayInputStream bis = new ByteArrayInputStream(bytes); |
| SafeObjectInputStream wois = new SafeObjectInputStream(bis, |
| Thread.currentThread().getContextClassLoader(), |
| listOfSafeObjects)) {; |
| |
| return wois.readObject(); |
| } |
| } |
| |
| public static boolean equalsHelper(Object o1, Object o2) { |
| if (o1 == o2) { |
| // handles same-reference, or null |
| return true; |
| } else if (o1 == null || o2 == null) { |
| // either o1 or o2 is null, but not both |
| return false; |
| } else { |
| return o1.equals(o2); |
| } |
| } |
| |
| public static <T> int compareToHelper(Comparable<T> o1, T o2) { |
| if (o1 == o2) { |
| // handles same-reference, or null |
| return 0; |
| } else if (o1 == null) { |
| return -1; |
| } else if (o2 == null) { |
| // either o1 or o2 is null, but not both |
| return 1; |
| } else { |
| return o1.compareTo(o2); |
| } |
| } |
| |
| public static int doHashCode(Object o1) { |
| if (o1 == null) return 0; |
| if (o1.getClass().isArray()) { |
| int length = Array.getLength(o1); |
| int result = 0; |
| for (int i = 0; i < length; i++) { |
| result += doHashCode(Array.get(o1, i)); |
| } |
| return result; |
| } |
| return o1.hashCode(); |
| } |
| |
| public static <A, R> R getObjectFromFactory(Class<? extends Factory<R, A>> factoryInterface, A obj) throws ClassNotFoundException { |
| Iterator<? extends Factory<R, A>> it = ServiceLoader.load(factoryInterface).iterator(); |
| while (it.hasNext()) { |
| Factory<R, A> factory = it.next(); |
| R instance = factory.getInstance(obj); |
| if (instance != null) { |
| return instance; |
| } |
| } |
| throw new ClassNotFoundException(factoryInterface.getClass().getName()); |
| } |
| } |