| /* |
| * Copyright (c) 2001-2008 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 com.alibaba.com.caucho.hessian.io.FieldDeserializer2Factory.NullFieldDeserializer; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.HashMap; |
| |
| /** |
| * Serializing an object for known object types. |
| */ |
| public class JavaDeserializer extends AbstractMapDeserializer { |
| private Class<?> _type; |
| private HashMap<?, FieldDeserializer2> _fieldMap; |
| private Method _readResolve; |
| private Constructor<?> _constructor; |
| private Object[] _constructorArgs; |
| |
| public JavaDeserializer(Class<?> cl, FieldDeserializer2Factory fieldFactory) { |
| _type = cl; |
| _fieldMap = getFieldMap(cl, fieldFactory); |
| |
| _readResolve = getReadResolve(cl); |
| |
| if (_readResolve != null) { |
| _readResolve.setAccessible(true); |
| } |
| |
| _constructor = getConstructor(cl); |
| _constructorArgs = getConstructorArgs(_constructor); |
| } |
| |
| /** |
| * Creates a map of the classes fields. |
| */ |
| protected static Object getParamArg(Class<?> cl) { |
| if (!cl.isPrimitive()) |
| return null; |
| else if (boolean.class.equals(cl)) |
| return Boolean.FALSE; |
| else if (byte.class.equals(cl)) |
| return new Byte((byte) 0); |
| else if (short.class.equals(cl)) |
| return new Short((short) 0); |
| else if (char.class.equals(cl)) |
| return new Character((char) 0); |
| else if (int.class.equals(cl)) |
| return Integer.valueOf(0); |
| else if (long.class.equals(cl)) |
| return Long.valueOf(0); |
| else if (float.class.equals(cl)) |
| return Float.valueOf(0); |
| else if (double.class.equals(cl)) |
| return Double.valueOf(0); |
| else |
| throw new UnsupportedOperationException(); |
| } |
| |
| static void logDeserializeError(Field field, Object obj, Object value, |
| Throwable e) |
| throws IOException { |
| String fieldName = (field.getDeclaringClass().getName() |
| + "." + field.getName()); |
| |
| if (e instanceof HessianFieldException) |
| throw (HessianFieldException) e; |
| else if (e instanceof IOException) |
| throw new HessianFieldException(fieldName + ": " + e.getMessage(), e); |
| |
| if (value != null) |
| throw new HessianFieldException(fieldName + ": " + value.getClass().getName() |
| + " cannot be assigned to '" + field.getType().getName() + "'", e); |
| else |
| throw new HessianFieldException(fieldName + ": " + field.getType().getName() + " cannot be assigned from null", e); |
| } |
| |
| protected Constructor<?> getConstructor(Class<?> cl) { |
| Constructor<?>[] constructors = cl.getDeclaredConstructors(); |
| long bestCost = Long.MAX_VALUE; |
| |
| Constructor<?> constructor = null; |
| |
| for (int i = 0; i < constructors.length; i++) { |
| Class<?>[] param = constructors[i].getParameterTypes(); |
| long cost = 0; |
| |
| for (int j = 0; j < param.length; j++) { |
| cost = 4 * cost; |
| |
| if (Object.class.equals(param[j])) |
| cost += 1; |
| else if (String.class.equals(param[j])) |
| cost += 2; |
| else if (int.class.equals(param[j])) |
| cost += 3; |
| else if (long.class.equals(param[j])) |
| cost += 4; |
| else if (param[j].isPrimitive()) |
| cost += 5; |
| else |
| cost += 6; |
| } |
| |
| if (cost < 0 || cost > (1 << 48)) |
| cost = 1 << 48; |
| |
| cost += (long) param.length << 48; |
| |
| if (cost < bestCost) { |
| constructor = constructors[i]; |
| bestCost = cost; |
| } |
| } |
| |
| if (constructor != null) { |
| constructor.setAccessible(true); |
| } |
| |
| return constructor; |
| } |
| |
| protected Object[] getConstructorArgs(Constructor<?> constructor) { |
| Object[] constructorArgs = null; |
| |
| if (constructor != null) { |
| Class<?>[] params = constructor.getParameterTypes(); |
| constructorArgs = new Object[params.length]; |
| for (int i = 0; i < params.length; i++) { |
| constructorArgs[i] = getParamArg(params[i]); |
| } |
| } |
| |
| return constructorArgs; |
| } |
| |
| @Override |
| public Class<?> getType() { |
| return _type; |
| } |
| |
| @Override |
| public boolean isReadResolve() { |
| return _readResolve != null; |
| } |
| |
| public Object readMap(AbstractHessianInput in) |
| throws IOException { |
| try { |
| Object obj = instantiate(); |
| |
| return readMap(in, obj); |
| } catch (IOException e) { |
| throw e; |
| } catch (RuntimeException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(_type.getName() + ":" + e.getMessage(), e); |
| } |
| } |
| |
| @Override |
| public Object[] createFields(int len) { |
| return new FieldDeserializer2[len]; |
| } |
| |
| @Override |
| public Object createField(String name) { |
| Object reader = _fieldMap.get(name); |
| |
| if (reader == null) |
| reader = NullFieldDeserializer.DESER; |
| |
| return reader; |
| } |
| |
| @Override |
| public Object readObject(AbstractHessianInput in, |
| Object[] fields) |
| throws IOException { |
| try { |
| Object obj = instantiate(); |
| |
| return readObject(in, obj, (FieldDeserializer2[]) fields); |
| } catch (IOException e) { |
| throw e; |
| } catch (RuntimeException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(_type.getName() + ":" + e.getMessage(), e); |
| } |
| } |
| |
| @Override |
| public Object readObject(AbstractHessianInput in, |
| String[] fieldNames) |
| throws IOException { |
| try { |
| Object obj = instantiate(); |
| |
| return readObject(in, obj, fieldNames); |
| } catch (IOException e) { |
| throw e; |
| } catch (RuntimeException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(_type.getName() + ":" + e.getMessage(), e); |
| } |
| } |
| |
| /** |
| * Returns the readResolve method |
| */ |
| protected Method getReadResolve(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("readResolve") |
| && method.getParameterTypes().length == 0) |
| return method; |
| } |
| } |
| |
| return null; |
| } |
| |
| public Object readMap(AbstractHessianInput in, Object obj) |
| throws IOException { |
| try { |
| int ref = in.addRef(obj); |
| |
| while (!in.isEnd()) { |
| Object key = in.readObject(); |
| |
| FieldDeserializer2 deser = _fieldMap.get(key); |
| |
| if (deser != null) |
| deser.deserialize(in, obj); |
| else |
| in.readObject(); |
| } |
| |
| in.readMapEnd(); |
| |
| Object resolve = resolve(in, obj); |
| |
| if (obj != resolve) |
| in.setRef(ref, resolve); |
| |
| return resolve; |
| } catch (IOException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(e); |
| } |
| } |
| |
| private Object readObject(AbstractHessianInput in, |
| Object obj, |
| FieldDeserializer2[] fields) |
| throws IOException { |
| try { |
| int ref = in.addRef(obj); |
| |
| for (FieldDeserializer2 reader : fields) { |
| reader.deserialize(in, obj); |
| } |
| |
| Object resolve = resolve(in, obj); |
| |
| if (obj != resolve) |
| in.setRef(ref, resolve); |
| |
| return resolve; |
| } catch (IOException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(obj.getClass().getName() + ":" + e, e); |
| } |
| } |
| |
| public Object readObject(AbstractHessianInput in, |
| Object obj, |
| String[] fieldNames) |
| throws IOException { |
| try { |
| int ref = in.addRef(obj); |
| |
| for (String fieldName : fieldNames) { |
| FieldDeserializer2 reader = _fieldMap.get(fieldName); |
| |
| if (reader != null) |
| reader.deserialize(in, obj); |
| else |
| in.readObject(); |
| } |
| |
| Object resolve = resolve(in, obj); |
| |
| if (obj != resolve) |
| in.setRef(ref, resolve); |
| |
| return resolve; |
| } catch (IOException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new IOExceptionWrapper(obj.getClass().getName() + ":" + e, e); |
| } |
| } |
| |
| protected Object resolve(AbstractHessianInput in, Object obj) |
| throws Exception { |
| // if there's a readResolve method, call it |
| try { |
| if (_readResolve != null) |
| return _readResolve.invoke(obj, new Object[0]); |
| } catch (InvocationTargetException e) { |
| if (e.getCause() instanceof Exception) |
| throw (Exception) e.getCause(); |
| else |
| throw e; |
| } |
| |
| return obj; |
| } |
| |
| protected Object instantiate() |
| throws Exception { |
| try { |
| if (_constructor != null) |
| return _constructor.newInstance(_constructorArgs); |
| else |
| return _type.newInstance(); |
| } catch (Exception e) { |
| throw new HessianProtocolException("'" + _type.getName() + "' could not be instantiated", e); |
| } |
| } |
| |
| /** |
| * Creates a map of the classes fields. |
| */ |
| protected HashMap<String, FieldDeserializer2> |
| getFieldMap(Class<?> cl, FieldDeserializer2Factory fieldFactory) { |
| HashMap<String, FieldDeserializer2> fieldMap |
| = new HashMap<String, FieldDeserializer2>(); |
| |
| 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; |
| else if (fieldMap.get(field.getName()) != null) |
| continue; |
| |
| /* |
| // XXX: could parameterize the handler to only deal with public |
| try { |
| field.setAccessible(true); |
| } catch (Throwable e) { |
| e.printStackTrace(); |
| } |
| */ |
| |
| FieldDeserializer2 deser = fieldFactory.create(field); |
| |
| fieldMap.put(field.getName(), deser); |
| } |
| } |
| |
| return fieldMap; |
| } |
| } |