| /* |
| * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved. |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Caucho Technology (http://www.caucho.com/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "Burlap", "Resin", and "Caucho" must not be used to |
| * endorse or promote products derived from this software without prior |
| * written permission. For written permission, please contact |
| * info@caucho.com. |
| * |
| * 5. Products derived from this software may not be called "Resin" |
| * nor may "Resin" appear in their names without prior written |
| * permission of Caucho Technology. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, |
| * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * @author Scott Ferguson |
| */ |
| |
| package com.alibaba.com.caucho.hessian3.io; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * Serializing an object for known object types. |
| */ |
| public class BeanSerializer extends AbstractSerializer { |
| private static final Logger log |
| = Logger.getLogger(BeanSerializer.class.getName()); |
| |
| private static final Object[] NULL_ARGS = new Object[0]; |
| private Method[] _methods; |
| private String[] _names; |
| |
| private Object _writeReplaceFactory; |
| private Method _writeReplace; |
| |
| public BeanSerializer(Class cl, ClassLoader loader) { |
| introspectWriteReplace(cl, loader); |
| |
| ArrayList primitiveMethods = new ArrayList(); |
| ArrayList compoundMethods = new ArrayList(); |
| |
| for (; cl != null; cl = cl.getSuperclass()) { |
| Method[] methods = cl.getDeclaredMethods(); |
| |
| for (int i = 0; i < methods.length; i++) { |
| Method method = methods[i]; |
| |
| if (Modifier.isStatic(method.getModifiers())) |
| continue; |
| |
| if (method.getParameterTypes().length != 0) |
| continue; |
| |
| String name = method.getName(); |
| |
| if (!name.startsWith("get")) |
| continue; |
| |
| Class type = method.getReturnType(); |
| |
| if (type.equals(void.class)) |
| continue; |
| |
| if (findSetter(methods, name, type) == null) |
| continue; |
| |
| // XXX: could parameterize the handler to only deal with public |
| method.setAccessible(true); |
| |
| if (type.isPrimitive() |
| || type.getName().startsWith("java.lang.") |
| && !type.equals(Object.class)) |
| primitiveMethods.add(method); |
| else |
| compoundMethods.add(method); |
| } |
| } |
| |
| ArrayList methodList = new ArrayList(); |
| methodList.addAll(primitiveMethods); |
| methodList.addAll(compoundMethods); |
| |
| Collections.sort(methodList, new MethodNameCmp()); |
| |
| _methods = new Method[methodList.size()]; |
| methodList.toArray(_methods); |
| |
| _names = new String[_methods.length]; |
| |
| for (int i = 0; i < _methods.length; i++) { |
| String name = _methods[i].getName(); |
| |
| name = name.substring(3); |
| |
| int j = 0; |
| for (; j < name.length() && Character.isUpperCase(name.charAt(j)); j++) { |
| } |
| |
| if (j == 1) |
| name = name.substring(0, j).toLowerCase() + name.substring(j); |
| else if (j > 1) |
| name = name.substring(0, j - 1).toLowerCase() + name.substring(j - 1); |
| |
| _names[i] = name; |
| } |
| } |
| |
| private void introspectWriteReplace(Class cl, ClassLoader loader) { |
| try { |
| String className = cl.getName() + "HessianSerializer"; |
| |
| Class serializerClass = Class.forName(className, false, loader); |
| |
| Object serializerObject = serializerClass.newInstance(); |
| |
| Method writeReplace = getWriteReplace(serializerClass, cl); |
| |
| if (writeReplace != null) { |
| _writeReplaceFactory = serializerObject; |
| _writeReplace = writeReplace; |
| |
| return; |
| } |
| } catch (ClassNotFoundException e) { |
| } catch (Exception e) { |
| log.log(Level.FINER, e.toString(), e); |
| } |
| |
| _writeReplace = getWriteReplace(cl); |
| } |
| |
| /** |
| * Returns the writeReplace method |
| */ |
| protected Method getWriteReplace(Class cl) { |
| for (; cl != null; cl = cl.getSuperclass()) { |
| Method[] methods = cl.getDeclaredMethods(); |
| |
| for (int i = 0; i < methods.length; i++) { |
| Method method = methods[i]; |
| |
| if (method.getName().equals("writeReplace") && |
| method.getParameterTypes().length == 0) |
| return method; |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Returns the writeReplace method |
| */ |
| protected Method getWriteReplace(Class cl, Class param) { |
| for (; cl != null; cl = cl.getSuperclass()) { |
| for (Method method : cl.getDeclaredMethods()) { |
| if (method.getName().equals("writeReplace") |
| && method.getParameterTypes().length == 1 |
| && param.equals(method.getParameterTypes()[0])) |
| return method; |
| } |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void writeObject(Object obj, AbstractHessianOutput out) |
| throws IOException { |
| if (out.addRef(obj)) |
| return; |
| |
| Class cl = obj.getClass(); |
| |
| try { |
| if (_writeReplace != null) { |
| Object repl; |
| |
| if (_writeReplaceFactory != null) |
| repl = _writeReplace.invoke(_writeReplaceFactory, obj); |
| else |
| repl = _writeReplace.invoke(obj); |
| |
| out.removeRef(obj); |
| |
| out.writeObject(repl); |
| |
| out.replaceRef(repl, obj); |
| |
| return; |
| } |
| } catch (Exception e) { |
| log.log(Level.FINER, e.toString(), e); |
| } |
| |
| int ref = out.writeObjectBegin(cl.getName()); |
| |
| if (ref < -1) { |
| // Hessian 1.1 uses a map |
| |
| for (int i = 0; i < _methods.length; i++) { |
| Method method = _methods[i]; |
| Object value = null; |
| |
| try { |
| value = _methods[i].invoke(obj, (Object[]) null); |
| } catch (Exception e) { |
| log.log(Level.FINE, e.toString(), e); |
| } |
| |
| out.writeString(_names[i]); |
| |
| out.writeObject(value); |
| } |
| |
| out.writeMapEnd(); |
| } else { |
| if (ref == -1) { |
| out.writeInt(_names.length); |
| |
| for (int i = 0; i < _names.length; i++) |
| out.writeString(_names[i]); |
| |
| out.writeObjectBegin(cl.getName()); |
| } |
| |
| for (int i = 0; i < _methods.length; i++) { |
| Method method = _methods[i]; |
| Object value = null; |
| |
| try { |
| value = _methods[i].invoke(obj, (Object[]) null); |
| } catch (Exception e) { |
| log.log(Level.FINER, e.toString(), e); |
| } |
| |
| out.writeObject(value); |
| } |
| } |
| } |
| |
| /** |
| * Finds any matching setter. |
| */ |
| private Method findSetter(Method[] methods, String getterName, Class arg) { |
| String setterName = "set" + getterName.substring(3); |
| |
| for (int i = 0; i < methods.length; i++) { |
| Method method = methods[i]; |
| |
| if (!method.getName().equals(setterName)) |
| continue; |
| |
| if (!method.getReturnType().equals(void.class)) |
| continue; |
| |
| Class[] params = method.getParameterTypes(); |
| |
| if (params.length == 1 && params[0].equals(arg)) |
| return method; |
| } |
| |
| return null; |
| } |
| |
| static class MethodNameCmp implements Comparator<Method> { |
| @Override |
| public int compare(Method a, Method b) { |
| return a.getName().compareTo(b.getName()); |
| } |
| } |
| } |