| /* |
| * 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.hessian.io; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| |
| /** |
| * Input stream for Hessian requests, deserializing objects using the |
| * java.io.Serialization protocol. |
| * <p> |
| * <p>HessianSerializerInput is unbuffered, so any client needs to provide |
| * its own buffering. |
| * <p> |
| * <h3>Serialization</h3> |
| * <p> |
| * <pre> |
| * InputStream is = new FileInputStream("test.xml"); |
| * HessianOutput in = new HessianSerializerOutput(is); |
| * |
| * Object obj = in.readObject(); |
| * is.close(); |
| * </pre> |
| * <p> |
| * <h3>Parsing a Hessian reply</h3> |
| * <p> |
| * <pre> |
| * InputStream is = ...; // from http connection |
| * HessianInput in = new HessianSerializerInput(is); |
| * String value; |
| * |
| * in.startReply(); // read reply header |
| * value = in.readString(); // read string value |
| * in.completeReply(); // read reply footer |
| * </pre> |
| */ |
| public class HessianSerializerInput extends HessianInput { |
| /** |
| * Creates a new Hessian input stream, initialized with an |
| * underlying input stream. |
| * |
| * @param is the underlying input stream. |
| */ |
| public HessianSerializerInput(InputStream is) { |
| super(is); |
| } |
| |
| /** |
| * Creates an uninitialized Hessian input stream. |
| */ |
| public HessianSerializerInput() { |
| } |
| |
| /** |
| * Reads an object from the input stream. cl is known not to be |
| * a Map. |
| */ |
| protected Object readObjectImpl(Class cl) |
| throws IOException { |
| try { |
| Object obj = cl.newInstance(); |
| |
| if (_refs == null) |
| _refs = new ArrayList(); |
| _refs.add(obj); |
| |
| HashMap fieldMap = getFieldMap(cl); |
| |
| int code = read(); |
| for (; code >= 0 && code != 'z'; code = read()) { |
| _peek = code; |
| |
| Object key = readObject(); |
| |
| Field field = (Field) fieldMap.get(key); |
| |
| if (field != null) { |
| Object value = readObject(field.getType()); |
| field.set(obj, value); |
| } else { |
| Object value = readObject(); |
| } |
| } |
| |
| if (code != 'z') |
| throw expect("map", code); |
| |
| // if there's a readResolve method, call it |
| try { |
| Method method = cl.getMethod("readResolve", new Class[0]); |
| return method.invoke(obj, new Object[0]); |
| } catch (Exception e) { |
| } |
| |
| return obj; |
| } catch (IOException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(e); |
| } |
| } |
| |
| /** |
| * Creates a map of the classes fields. |
| */ |
| protected HashMap getFieldMap(Class cl) { |
| HashMap fieldMap = new HashMap(); |
| |
| for (; cl != null; cl = cl.getSuperclass()) { |
| Field[] fields = cl.getDeclaredFields(); |
| for (int i = 0; i < fields.length; i++) { |
| Field field = fields[i]; |
| |
| if (Modifier.isTransient(field.getModifiers()) || |
| Modifier.isStatic(field.getModifiers())) |
| continue; |
| |
| // XXX: could parameterize the handler to only deal with public |
| field.setAccessible(true); |
| |
| fieldMap.put(field.getName(), field); |
| } |
| } |
| |
| return fieldMap; |
| } |
| } |