| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | // Original Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved. |
| 16 | // The Apache Software License, Version 1.1 |
| 17 | |
| 18 | package net.sourceforge.hiveremoting.caucho; |
| 19 | |
| 20 | import java.io.IOException; |
| 21 | import java.lang.reflect.Field; |
| 22 | import java.lang.reflect.Method; |
| 23 | import java.lang.reflect.Modifier; |
| 24 | import java.util.ArrayList; |
| 25 | import java.util.List; |
| 26 | import java.util.logging.Level; |
| 27 | import java.util.logging.Logger; |
| 28 | |
| 29 | import com.caucho.hessian.io.AbstractHessianOutput; |
| 30 | import com.caucho.hessian.io.AbstractSerializer; |
| 31 | |
| 32 | /** |
| 33 | * Serializing an object for known object types. |
| 34 | */ |
| 35 | public class NonSerializableClassSerializer extends AbstractSerializer |
| 36 | { |
| 37 | private static final Logger _log = |
| 38 | Logger.getLogger(NonSerializableClassSerializer.class.getName()); |
| 39 | |
| 40 | public NonSerializableClassSerializer(Class cl) |
| 41 | { |
| 42 | _writeReplace = getWriteReplace(cl); |
| 43 | if (_writeReplace != null) |
| 44 | { |
| 45 | _writeReplace.setAccessible(true); |
| 46 | } |
| 47 | |
| 48 | List<Field> primitiveFields = new ArrayList<Field>(); |
| 49 | List<Field> compoundFields = new ArrayList<Field>(); |
| 50 | for (; cl != null; cl = cl.getSuperclass()) |
| 51 | { |
| 52 | Field[] fields = cl.getDeclaredFields(); |
| 53 | for (int i = 0; i < fields.length; i++) |
| 54 | { |
| 55 | Field field = fields[i]; |
| 56 | |
| 57 | if ( Modifier.isTransient(field.getModifiers()) |
| 58 | || Modifier.isStatic(field.getModifiers())) |
| 59 | { |
| 60 | continue; |
| 61 | } |
| 62 | // XXX: could parameterize the handler to only deal with public |
| 63 | field.setAccessible(true); |
| 64 | |
| 65 | if ( field.getType().isPrimitive() |
| 66 | || field.getType().getName().startsWith("java.lang.") |
| 67 | && !field.getType().equals(Object.class)) |
| 68 | { |
| 69 | primitiveFields.add(field); |
| 70 | } |
| 71 | else |
| 72 | { |
| 73 | compoundFields.add(field); |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | List<Field> fields = new ArrayList<Field>(); |
| 79 | fields.addAll(primitiveFields); |
| 80 | fields.addAll(compoundFields); |
| 81 | _fields = new Field[fields.size()]; |
| 82 | fields.toArray(_fields); |
| 83 | _fieldSerializers = new FieldSerializer[_fields.length]; |
| 84 | for (int i = 0; i < _fields.length; i++) |
| 85 | { |
| 86 | _fieldSerializers[i] = getFieldSerializer(_fields[i].getType()); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Returns the writeReplace method |
| 92 | */ |
| 93 | protected Method getWriteReplace(Class cl) |
| 94 | { |
| 95 | for (; cl != null; cl = cl.getSuperclass()) |
| 96 | { |
| 97 | Method[] methods = cl.getDeclaredMethods(); |
| 98 | for (int i = 0; i < methods.length; i++) |
| 99 | { |
| 100 | Method method = methods[i]; |
| 101 | if ( method.getName().equals("writeReplace") |
| 102 | && method.getParameterTypes().length == 0) |
| 103 | { |
| 104 | return method; |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | return null; |
| 109 | } |
| 110 | |
| 111 | @Override public void writeObject(Object obj, AbstractHessianOutput out) |
| 112 | throws IOException |
| 113 | { |
| 114 | if (out.addRef(obj)) |
| 115 | { |
| 116 | return; |
| 117 | } |
| 118 | |
| 119 | Class cl = obj.getClass(); |
| 120 | // CSOFF: IllegalCatchCheck |
| 121 | try |
| 122 | { |
| 123 | if (_writeReplace != null) |
| 124 | { |
| 125 | Object repl = _writeReplace.invoke(obj, new Object[0]); |
| 126 | out.removeRef(obj); |
| 127 | out.writeObject(repl); |
| 128 | out.replaceRef(repl, obj); |
| 129 | return; |
| 130 | } |
| 131 | } |
| 132 | catch (Exception e) |
| 133 | { |
| 134 | _log.log(Level.FINE, e.toString(), e); |
| 135 | } |
| 136 | // CSON: IllegalCatchCheck |
| 137 | |
| 138 | int ref = out.writeObjectBegin(cl.getName()); |
| 139 | if (ref < 0) |
| 140 | { |
| 141 | writeObject10(obj, out); |
| 142 | } |
| 143 | else |
| 144 | { |
| 145 | if (ref == 0) |
| 146 | { |
| 147 | writeDefinition20(out); |
| 148 | } |
| 149 | writeInstance(obj, out); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | private void writeObject10(Object obj, AbstractHessianOutput out) |
| 154 | throws IOException |
| 155 | { |
| 156 | for (int i = 0; i < _fields.length; i++) |
| 157 | { |
| 158 | Field field = _fields[i]; |
| 159 | out.writeString(field.getName()); |
| 160 | _fieldSerializers[i].serialize(out, obj, field); |
| 161 | } |
| 162 | out.writeMapEnd(); |
| 163 | } |
| 164 | |
| 165 | private void writeDefinition20(AbstractHessianOutput out) |
| 166 | throws IOException |
| 167 | { |
| 168 | out.writeClassFieldLength(_fields.length); |
| 169 | for (int i = 0; i < _fields.length; i++) |
| 170 | { |
| 171 | Field field = _fields[i]; |
| 172 | out.writeString(field.getName()); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | public void writeInstance(Object obj, AbstractHessianOutput out) |
| 177 | throws IOException |
| 178 | { |
| 179 | for (int i = 0; i < _fields.length; i++) |
| 180 | { |
| 181 | Field field = _fields[i]; |
| 182 | _fieldSerializers[i].serialize(out, obj, field); |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | private static FieldSerializer getFieldSerializer(Class type) |
| 187 | { |
| 188 | if ( int.class.equals(type) |
| 189 | || byte.class.equals(type) |
| 190 | || short.class.equals(type) |
| 191 | || int.class.equals(type)) |
| 192 | { |
| 193 | return IntFieldSerializer.SER; |
| 194 | } |
| 195 | else if (long.class.equals(type)) |
| 196 | { |
| 197 | return LongFieldSerializer.SER; |
| 198 | } |
| 199 | else if ( double.class.equals(type) |
| 200 | || float.class.equals(type)) |
| 201 | { |
| 202 | return DoubleFieldSerializer.SER; |
| 203 | } |
| 204 | else if (boolean.class.equals(type)) |
| 205 | { |
| 206 | return BooleanFieldSerializer.SER; |
| 207 | } |
| 208 | else if (String.class.equals(type)) |
| 209 | { |
| 210 | return StringFieldSerializer.SER; |
| 211 | } |
| 212 | else |
| 213 | { |
| 214 | return FieldSerializer.SER; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | static class FieldSerializer |
| 219 | { |
| 220 | static final FieldSerializer SER = new FieldSerializer(); |
| 221 | |
| 222 | void serialize(AbstractHessianOutput out, Object obj, Field field) |
| 223 | throws IOException |
| 224 | { |
| 225 | Object value = null; |
| 226 | try |
| 227 | { |
| 228 | value = field.get(obj); |
| 229 | } |
| 230 | catch (IllegalAccessException e) |
| 231 | { |
| 232 | _log.log(Level.FINE, e.toString(), e); |
| 233 | } |
| 234 | out.writeObject(value); |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | static class BooleanFieldSerializer extends FieldSerializer |
| 239 | { |
| 240 | static final FieldSerializer SER = new BooleanFieldSerializer(); |
| 241 | |
| 242 | @Override void serialize(AbstractHessianOutput out, Object obj, Field field) |
| 243 | throws IOException |
| 244 | { |
| 245 | boolean value = false; |
| 246 | try |
| 247 | { |
| 248 | value = field.getBoolean(obj); |
| 249 | } |
| 250 | catch (IllegalAccessException e) |
| 251 | { |
| 252 | _log.log(Level.FINE, e.toString(), e); |
| 253 | } |
| 254 | out.writeBoolean(value); |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | static class IntFieldSerializer extends FieldSerializer |
| 259 | { |
| 260 | static final FieldSerializer SER = new IntFieldSerializer(); |
| 261 | |
| 262 | @Override void serialize(AbstractHessianOutput out, Object obj, Field field) |
| 263 | throws IOException |
| 264 | { |
| 265 | int value = 0; |
| 266 | try |
| 267 | { |
| 268 | value = field.getInt(obj); |
| 269 | } |
| 270 | catch (IllegalAccessException e) |
| 271 | { |
| 272 | _log.log(Level.FINE, e.toString(), e); |
| 273 | } |
| 274 | out.writeInt(value); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | static class LongFieldSerializer extends FieldSerializer |
| 279 | { |
| 280 | static final FieldSerializer SER = new LongFieldSerializer(); |
| 281 | |
| 282 | @Override void serialize(AbstractHessianOutput out, Object obj, Field field) |
| 283 | throws IOException |
| 284 | { |
| 285 | long value = 0; |
| 286 | try |
| 287 | { |
| 288 | value = field.getLong(obj); |
| 289 | } |
| 290 | catch (IllegalAccessException e) |
| 291 | { |
| 292 | _log.log(Level.FINE, e.toString(), e); |
| 293 | } |
| 294 | out.writeLong(value); |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | static class DoubleFieldSerializer extends FieldSerializer |
| 299 | { |
| 300 | static final FieldSerializer SER = new DoubleFieldSerializer(); |
| 301 | |
| 302 | @Override void serialize(AbstractHessianOutput out, Object obj, Field field) |
| 303 | throws IOException |
| 304 | { |
| 305 | double value = 0; |
| 306 | try |
| 307 | { |
| 308 | value = field.getDouble(obj); |
| 309 | } |
| 310 | catch (IllegalAccessException e) |
| 311 | { |
| 312 | _log.log(Level.FINE, e.toString(), e); |
| 313 | } |
| 314 | out.writeDouble(value); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | static class StringFieldSerializer extends FieldSerializer |
| 319 | { |
| 320 | static final FieldSerializer SER = new StringFieldSerializer(); |
| 321 | |
| 322 | @Override void serialize(AbstractHessianOutput out, Object obj, Field field) |
| 323 | throws IOException |
| 324 | { |
| 325 | String value = null; |
| 326 | try |
| 327 | { |
| 328 | value = (String) field.get(obj); |
| 329 | } |
| 330 | catch (IllegalAccessException e) |
| 331 | { |
| 332 | _log.log(Level.FINE, e.toString(), e); |
| 333 | } |
| 334 | out.writeString(value); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | private Field[] _fields; |
| 339 | private FieldSerializer[] _fieldSerializers; |
| 340 | private Method _writeReplace; |
| 341 | } |