ValueType.java revision 608:7e06bf1dcb09
1/* 2 * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25/* 26 * Licensed Materials - Property of IBM 27 * RMI-IIOP v1.0 28 * Copyright IBM Corp. 1998 1999 All Rights Reserved 29 * 30 */ 31 32package sun.rmi.rmic.iiop; 33 34import java.util.Vector; 35import sun.tools.java.ClassNotFound; 36import sun.tools.java.ClassDeclaration; 37import sun.tools.java.ClassDefinition; 38import sun.tools.java.MemberDefinition; 39import java.util.Hashtable; 40import java.io.ObjectStreamClass; 41import java.io.ObjectStreamField; 42 43 44/** 45 * ValueType represents any non-special class which does inherit from 46 * java.io.Serializable and does not inherit from java.rmi.Remote. 47 * <p> 48 * The static forValue(...) method must be used to obtain an instance, and 49 * will return null if the ClassDefinition is non-conforming. 50 * 51 * @author Bryan Atsatt 52 */ 53public class ValueType extends ClassType { 54 55 private boolean isCustom; 56 57 //_____________________________________________________________________ 58 // Public Interfaces 59 //_____________________________________________________________________ 60 61 /** 62 * Create an ValueType object for the given class. 63 * 64 * If the class is not a properly formed or if some other error occurs, the 65 * return value will be null, and errors will have been reported to the 66 * supplied BatchEnvironment. 67 */ 68 public static ValueType forValue(ClassDefinition classDef, 69 ContextStack stack, 70 boolean quiet) { 71 72 if (stack.anyErrors()) return null; 73 74 // Do we already have it? 75 76 sun.tools.java.Type theType = classDef.getType(); 77 String typeKey = theType.toString(); 78 Type existing = getType(typeKey,stack); 79 80 if (existing != null) { 81 82 if (!(existing instanceof ValueType)) return null; // False hit. 83 84 // Yep, so return it... 85 86 return (ValueType) existing; 87 } 88 89 // Is this java.lang.Class? 90 91 boolean javaLangClass = false; 92 93 if (classDef.getClassDeclaration().getName() == idJavaLangClass) { 94 95 // Yes, so replace classDef with one for 96 // javax.rmi.CORBA.ClassDesc... 97 98 javaLangClass = true; 99 BatchEnvironment env = stack.getEnv(); 100 ClassDeclaration decl = env.getClassDeclaration(idClassDesc); 101 ClassDefinition def = null; 102 103 try { 104 def = decl.getClassDefinition(env); 105 } catch (ClassNotFound ex) { 106 classNotFound(stack,ex); 107 return null; 108 } 109 110 classDef = def; 111 } 112 113 // Could this be a value? 114 115 if (couldBeValue(stack,classDef)) { 116 117 // Yes, so check it... 118 119 ValueType it = new ValueType(classDef,stack,javaLangClass); 120 putType(typeKey,it,stack); 121 stack.push(it); 122 123 if (it.initialize(stack,quiet)) { 124 stack.pop(true); 125 return it; 126 } else { 127 removeType(typeKey,stack); 128 stack.pop(false); 129 return null; 130 } 131 } else { 132 return null; 133 } 134 } 135 136 137 /** 138 * Return a string describing this type. 139 */ 140 public String getTypeDescription () { 141 String result = addExceptionDescription("Value"); 142 if (isCustom) { 143 result = "Custom " + result; 144 } 145 if (isIDLEntity) { 146 result = result + " [IDLEntity]"; 147 } 148 return result; 149 } 150 151 /** 152 * Return true if this type is a "custom" type (i.e. 153 * it implements java.io.Externalizable or has a 154 * method with the following signature: 155 * 156 * private void writeObject(java.io.ObjectOutputStream out); 157 * 158 */ 159 public boolean isCustom () { 160 return isCustom; 161 } 162 163 164 //_____________________________________________________________________ 165 // Subclass/Internal Interfaces 166 //_____________________________________________________________________ 167 168 /** 169 * Create a ValueType instance for the given class. The resulting 170 * object is not yet completely initialized. 171 */ 172 private ValueType(ClassDefinition classDef, 173 ContextStack stack, 174 boolean isMappedJavaLangClass) { 175 super(stack,classDef,TYPE_VALUE | TM_CLASS | TM_COMPOUND); 176 isCustom = false; 177 178 // If this is the mapped version of java.lang.Class, 179 // set the non-IDL names back to java.lang.Class... 180 181 if (isMappedJavaLangClass) { 182 setNames(idJavaLangClass,IDL_CLASS_MODULE,IDL_CLASS); 183 } 184 } 185 186 //_____________________________________________________________________ 187 // Internal Interfaces 188 //_____________________________________________________________________ 189 190 /** 191 * Initialize this instance. 192 */ 193 194 private static boolean couldBeValue(ContextStack stack, ClassDefinition classDef) { 195 196 boolean result = false; 197 ClassDeclaration classDecl = classDef.getClassDeclaration(); 198 BatchEnvironment env = stack.getEnv(); 199 200 try { 201 // Make sure it's not remote... 202 203 if (env.defRemote.implementedBy(env, classDecl)) { 204 failedConstraint(10,false,stack,classDef.getName()); 205 } else { 206 207 // Make sure it's Serializable... 208 209 if (!env.defSerializable.implementedBy(env, classDecl)) { 210 failedConstraint(11,false,stack,classDef.getName()); 211 } else { 212 result = true; 213 } 214 } 215 } catch (ClassNotFound e) { 216 classNotFound(stack,e); 217 } 218 219 return result; 220 } 221 222 /** 223 * Initialize this instance. 224 */ 225 private boolean initialize (ContextStack stack, boolean quiet) { 226 227 ClassDefinition ourDef = getClassDefinition(); 228 ClassDeclaration ourDecl = getClassDeclaration(); 229 230 try { 231 232 // Make sure our parentage is ok... 233 234 if (!initParents(stack)) { 235 failedConstraint(12,quiet,stack,getQualifiedName()); 236 return false; 237 } 238 239 240 // We're ok, so make up our collections... 241 242 Vector directInterfaces = new Vector(); 243 Vector directMethods = new Vector(); 244 Vector directMembers = new Vector(); 245 246 // Get interfaces... 247 248 if (addNonRemoteInterfaces(directInterfaces,stack) != null) { 249 250 // Get methods... 251 252 if (addAllMethods(ourDef,directMethods,false,false,stack) != null) { 253 254 // Update parent class methods 255 if (updateParentClassMethods(ourDef,directMethods,false,stack) != null) { 256 257 // Get constants and members... 258 259 if (addAllMembers(directMembers,false,false,stack)) { 260 261 // We're ok, so pass 'em up... 262 263 if (!initialize(directInterfaces,directMethods,directMembers,stack,quiet)) { 264 return false; 265 } 266 267 // Is this class Externalizable? 268 269 boolean externalizable = false; 270 if (!env.defExternalizable.implementedBy(env, ourDecl)) { 271 272 // No, so check to see if we have a serialPersistentField 273 // that will modify the members. 274 275 if (!checkPersistentFields(getClassInstance(),quiet)) { 276 return false; 277 } 278 } else { 279 280 // Yes. 281 282 externalizable = true; 283 } 284 285 // Should this class be considered "custom"? It is if 286 // it is Externalizable OR if it has a method with the 287 // following signature: 288 // 289 // private void writeObject(java.io.ObjectOutputStream out); 290 // 291 292 if (externalizable) { 293 isCustom = true; 294 } else { 295 for (MemberDefinition member = ourDef.getFirstMember(); 296 member != null; 297 member = member.getNextMember()) { 298 299 if (member.isMethod() && 300 !member.isInitializer() && 301 member.isPrivate() && 302 member.getName().toString().equals("writeObject")) { 303 304 // Check return type, arguments and exceptions... 305 306 sun.tools.java.Type methodType = member.getType(); 307 sun.tools.java.Type rtnType = methodType.getReturnType(); 308 309 if (rtnType == sun.tools.java.Type.tVoid) { 310 311 // Return type is correct. How about arguments? 312 313 sun.tools.java.Type[] args = methodType.getArgumentTypes(); 314 if (args.length == 1 && 315 args[0].getTypeSignature().equals("Ljava/io/ObjectOutputStream;")) { 316 317 // Arguments are correct, so it is a custom 318 // value type... 319 320 isCustom = true; 321 } 322 } 323 } 324 } 325 } 326 } 327 328 return true; 329 } 330 } 331 } 332 } catch (ClassNotFound e) { 333 classNotFound(stack,e); 334 } 335 336 return false; 337 } 338 339 340 private boolean checkPersistentFields (Class clz, boolean quiet) { 341 342 // Do we have a writeObject method? 343 344 for (int i = 0; i < methods.length; i++) { 345 if (methods[i].getName().equals("writeObject") && 346 methods[i].getArguments().length == 1) { 347 348 Type returnType = methods[i].getReturnType(); 349 Type arg = methods[i].getArguments()[0]; 350 String id = arg.getQualifiedName(); 351 352 if (returnType.isType(TYPE_VOID) && 353 id.equals("java.io.ObjectOutputStream")) { 354 355 // Got one, so there's nothing to do... 356 357 return true; 358 } 359 } 360 } 361 362 // Do we have a valid serialPersistentField array? 363 364 MemberDefinition spfDef = null; 365 366 for (int i = 0; i < members.length; i++) { 367 if (members[i].getName().equals("serialPersistentFields")) { 368 369 Member member = members[i]; 370 Type type = member.getType(); 371 Type elementType = type.getElementType(); 372 373 // We have a member with the correct name. Make sure 374 // we have the correct signature... 375 376 if (elementType != null && 377 elementType.getQualifiedName().equals( 378 "java.io.ObjectStreamField") 379 ) { 380 381 if (member.isStatic() && 382 member.isFinal() && 383 member.isPrivate()) { 384 385 // We have the correct signature 386 387 spfDef = member.getMemberDefinition(); 388 389 } else { 390 391 // Bad signature... 392 393 failedConstraint(4,quiet,stack,getQualifiedName()); 394 return false; 395 } 396 } 397 } 398 } 399 400 // If we do not have a serialPersistentField, 401 // there's nothing to do, so return with no error... 402 403 if (spfDef == null) { 404 return true; 405 } 406 407 // Ok, now we must examine the contents of the array - 408 // then validate them... 409 410 Hashtable fields = getPersistentFields(clz); 411 boolean result = true; 412 413 for (int i = 0; i < members.length; i++) { 414 String fieldName = members[i].getName(); 415 String fieldType = members[i].getType().getSignature(); 416 417 // Is this field present in the array? 418 419 String type = (String) fields.get(fieldName); 420 421 if (type == null) { 422 423 // No, so mark it transient... 424 425 members[i].setTransient(); 426 427 } else { 428 429 // Yes, does the type match? 430 431 if (type.equals(fieldType)) { 432 433 // Yes, so remove it from the fields table... 434 435 fields.remove(fieldName); 436 437 } else { 438 439 // No, so error... 440 441 result = false; 442 failedConstraint(2,quiet,stack,fieldName,getQualifiedName()); 443 } 444 } 445 } 446 447 // Ok, we've checked all of our fields. Are there any left in the "array"? 448 // If so, it's an error... 449 450 if (result && fields.size() > 0) { 451 452 result = false; 453 failedConstraint(9,quiet,stack,getQualifiedName()); 454 } 455 456 // Return result... 457 458 return result; 459 } 460 461 /** 462 * Get the names and types of all the persistent fields of a Class. 463 */ 464 private Hashtable getPersistentFields (Class clz) { 465 Hashtable result = new Hashtable(); 466 ObjectStreamClass osc = ObjectStreamClass.lookup(clz); 467 if (osc != null) { 468 ObjectStreamField[] fields = osc.getFields(); 469 for (int i = 0; i < fields.length; i++) { 470 String typeSig; 471 String typePrefix = String.valueOf(fields[i].getTypeCode()); 472 if (fields[i].isPrimitive()) { 473 typeSig = typePrefix; 474 } else { 475 if (fields[i].getTypeCode() == '[') { 476 typePrefix = ""; 477 } 478 typeSig = typePrefix + fields[i].getType().getName().replace('.','/'); 479 if (typeSig.endsWith(";")) { 480 typeSig = typeSig.substring(0,typeSig.length()-1); 481 } 482 } 483 result.put(fields[i].getName(),typeSig); 484 } 485 } 486 return result; 487 } 488} 489