pegasus/src/Pegasus/CQL/CQLChainedIdentifierRep.cpp - annotate

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1 chuck 1.1.2.7 //%2003////////////////////////////////////////////////////////////////////////
2 chuck 1.1.2.6 // 3 // Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Development 4 // Company, L. P., IBM Corp., The Open Group, Tivoli Systems.
5 chuck 1.1.2.8 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.;
6 chuck 1.1.2.6 // IBM Corp.; EMC Corporation, The Open Group. 7 // 8 // Permission is hereby granted, free of charge, to any person obtaining a copy 9 // of this software and associated documentation files (the "Software"), to 10 // deal in the Software without restriction, including without limitation the 11 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 12 // sell copies of the Software, and to permit persons to whom the Software is 13 // furnished to do so, subject to the following conditions: 14 // 15 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN 16 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED 17 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 18 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 19 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 20 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 21 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 // 24 //============================================================================== 25 // 26 // Authors: David Rosckes (rosckes@us.ibm.com) 27 chuck 1.1.2.6 // Bert Rivero (hurivero@us.ibm.com) 28 // Chuck Carmack (carmack@us.ibm.com) 29 // Brian Lucier (lucier@us.ibm.com) 30 // 31 // Modified By: 32 // 33 //%///////////////////////////////////////////////////////////////////////////// 34
35 humberto 1.1.2.1 #include "CQLChainedIdentifier.h" 36 #include "CQLChainedIdentifierRep.h"
37 humberto 1.1.2.2 #include <Pegasus/CQL/CQLFactory.h>
38 chuck 1.1.2.17 #include <Pegasus/CQL/QueryContext.h>
39 humberto 1.1.2.18 #include "QueryException.h"
40 chuck 1.1.2.17
41 humberto 1.1.2.1 PEGASUS_NAMESPACE_BEGIN 42
43 humberto 1.1.2.3 CQLChainedIdentifierRep::CQLChainedIdentifierRep(){ 44 } 45
46 humberto 1.1.2.1 CQLChainedIdentifierRep::CQLChainedIdentifierRep(String inString) 47 { 48 parse(inString); 49 } 50
51 humberto 1.1.2.12 CQLChainedIdentifierRep::CQLChainedIdentifierRep(const CQLIdentifier &id)
52 humberto 1.1.2.1 { 53 _subIdentifiers.append(id); 54 } 55
56 humberto 1.1.2.3 CQLChainedIdentifierRep::CQLChainedIdentifierRep(const CQLChainedIdentifierRep* rep){ 57 _subIdentifiers = rep->_subIdentifiers; 58 } 59 60 CQLChainedIdentifierRep::~CQLChainedIdentifierRep(){ 61
62 humberto 1.1.2.1 } 63 64 const Array<CQLIdentifier>& CQLChainedIdentifierRep::getSubIdentifiers()const 65 { 66 return _subIdentifiers; 67 } 68
69 humberto 1.1.2.12 CQLIdentifier CQLChainedIdentifierRep::getLastIdentifier()const{
70 humberto 1.1.2.1 if(_subIdentifiers.size() > 0) 71 return _subIdentifiers[_subIdentifiers.size()-1]; 72 return CQLIdentifier(); 73 } 74 75 String CQLChainedIdentifierRep::toString()const{ 76 String s; 77 for(Uint32 i = 0; i < _subIdentifiers.size(); i++){ 78 s.append(_subIdentifiers[i].toString()); 79 if(i < _subIdentifiers.size() - 1) 80 s.append("."); 81 } 82 return s; 83 } 84
85 humberto 1.1.2.12 void CQLChainedIdentifierRep::append(const CQLIdentifier & id){
86 humberto 1.1.2.1 _subIdentifiers.append(id); 87 } 88
89 humberto 1.1.2.12 Boolean CQLChainedIdentifierRep::isSubChain(const CQLChainedIdentifier & chain)const{
90 humberto 1.1.2.1 Array<CQLIdentifier> ids = chain.getSubIdentifiers(); 91 for(Uint32 i = 0; i < ids.size(); i++){ 92 if(ids[i] != _subIdentifiers[i].getName()) 93 return false; 94 } 95 return true; 96 } 97
98 david 1.1.2.15 CQLIdentifier CQLChainedIdentifierRep::operator[](Uint32 index)const 99 { 100 return CQLIdentifier(_subIdentifiers[index]);
101 humberto 1.1.2.1 } 102
103 humberto 1.1.2.3 CQLChainedIdentifierRep& CQLChainedIdentifierRep::operator=(const CQLChainedIdentifierRep& rhs){ 104 if(&rhs != this){ 105 _subIdentifiers = rhs._subIdentifiers; 106 } 107 return *this; 108 } 109
110 humberto 1.1.2.12 Uint32 CQLChainedIdentifierRep::size()const{
111 humberto 1.1.2.1 return _subIdentifiers.size(); 112 } 113
114 humberto 1.1.2.12 Boolean CQLChainedIdentifierRep::prepend(const CQLIdentifier & id){
115 humberto 1.1.2.1 /* 116 Compare id against the first element in _subIdentifiers, 117 if not an exact match, then prepend. This is used to fully 118 qualify the chained identifier. 119 */ 120 if(id != _subIdentifiers[0]){ 121 _subIdentifiers.prepend(id); 122 return true; 123 } 124 return false; 125 } 126
127 chuck 1.1.2.4 void CQLChainedIdentifierRep::applyContext(QueryContext& inContext) 128 {
129 chuck 1.1.2.9 if (_subIdentifiers.size() == 0) 130 return; 131
132 chuck 1.1.2.11 // Chained identifiers that are standalone symbolic constants 133 // should have had the context applied already. If this method 134 // is called and this is still a standalone symbolic constant, 135 // then that is an error. 136 if (_subIdentifiers.size() == 1 && 137 _subIdentifiers[0].getName().getString().size() == 0 && 138 _subIdentifiers[0].isSymbolicConstant()) 139 {
140 humberto 1.1.2.18 throw CQLValidationException( 141 MessageLoaderParms(String("CQL.CQLChainedIdentifier.STAND_ALONE_SYMBOLIC_CONSTANT"), 142 String("The stand alone chained identifier should have had the context applied already.")) 143 );
144 chuck 1.1.2.11 } 145
146 chuck 1.1.2.5 CQLIdentifier firstId = _subIdentifiers[0]; 147
148 chuck 1.1.2.13 // Process if the first identifier has some contents. 149 if ((firstId.getName().getString().size() != 0) \|\| firstId.isWildcard())
150 chuck 1.1.2.5 { 151 Array<CQLIdentifier> fromList = inContext.getFromList(); 152 153 if (firstId.isWildcard()) 154 {
155 chuck 1.1.2.16 // First chain element is wildcarded.
156 chuck 1.1.2.13 // Prepend the FROM class.
157 chuck 1.1.2.5 _subIdentifiers.prepend(fromList[0]); 158 } 159 else 160 {
161 chuck 1.1.2.16 // Not a wildcard.
162 chuck 1.1.2.10 if (firstId.isScoped())
163 chuck 1.1.2.5 {
164 chuck 1.1.2.13 // The first identifier is a scoped property or a 165 // scoped symbolic constant. 166 // Prepend the FROM class. 167 // Example: SELECT * FROM F WHERE someprop = X::p#'OK'
168 chuck 1.1.2.5 _subIdentifiers.prepend(fromList[0]); 169 } 170 else
171 chuck 1.1.2.10 {
172 chuck 1.1.2.13 // The first identifier is not a scoped property or a scoped 173 // symbolic constant. 174 175 // Determine if the first identifier's name is in the FROM list.
176 chuck 1.1.2.10 String classContext = firstId.getName().getString(); 177 CQLIdentifier matchedId = inContext.findClass(classContext);
178 chuck 1.1.2.14 if (matchedId.getName().getString().size() == 0)
179 chuck 1.1.2.5 {
180 chuck 1.1.2.10 // Could not find the firstId in the FROM list.
181 chuck 1.1.2.16 // Assume the firstId is a property on the FROM class. 182 // Prepend the FROM class, except in the cases described below.
183 chuck 1.1.2.13 // 184 // NOTE: 185 // We need special handling for symbolic constants, because there are cases 186 // where the first id is a class that is not the FROM class. 187 // Refer to section 5.4.3 of the CQL spec. 188 // 189 // Examples:
190 chuck 1.1.2.16 // SELECT * FROM F WHERE F.someprop = prop#'OK' 191 // Prepend the FROM class because symbolic constants can only 192 // apply to properties, and properties in the first position 193 // are assumed to be on the FROM class. 194 //
195 chuck 1.1.2.13 // SELECT * FROM F WHERE F.someprop = ClassNotInFromList.prop#'OK' 196 // We don't want to prepend the FROM class to ClassNotInFromList
197 chuck 1.1.2.16 // in this case. But we need to get the FROM class from the schema 198 // to make sure ClassNotInFromList is not a property on the FROM class.
199 chuck 1.1.2.13 //
200 chuck 1.1.2.16 // SELECT * FROM F WHERE F.someprop = embeddedObjectOnF.X::p#'OK' 201 // In this case embeddedObjectOnF is an embedded object property 202 // on the FROM class. We want to prepend the FROM class. But 203 // we need to get FROM class from the schema first to make sure. 204 // 205 // SELECT * FROM F WHERE F.someprop = embeddedObjectOnF.X::p 206 // In this case embeddedObjectOnF is an embedded object property 207 // on the FROM class. We want to prepend the FROM class. Since 208 // the last id is not a symbolic constant we can prepend without 209 // getting the FROM class from the schema.
210 chuck 1.1.2.13 // 211 // Note that standalone symbolic constants, like #'OK'
212 chuck 1.1.2.16 // are errors when this code is run.
213 chuck 1.1.2.13 // See above for details. 214 //
215 chuck 1.1.2.16 216 if (firstId.isSymbolicConstant() \|\| 217 !getLastIdentifier().isSymbolicConstant()) 218 { 219 // Must be a property on the FROM class. 220 _subIdentifiers.prepend(fromList[0]); 221 } 222 else 223 { 224 // Get the FROM class. 225 try 226 { 227 CIMClass fromClass = inContext.getClass(fromList[0].getName()); 228 if (fromClass.findProperty(firstId.getName()) != PEG_NOT_FOUND) 229 { 230 // A property on the FROM class. 231 _subIdentifiers.prepend(fromList[0]); 232 } 233 } 234 catch (CIMException& ce) 235 { 236 chuck 1.1.2.16 if (ce.getCode() == CIM_ERR_INVALID_CLASS \|\| 237 ce.getCode() == CIM_ERR_NOT_FOUND) 238 { 239 // ATTN may just want to throw the CIMException rather than 240 // CQL exception 241 throw Exception("TEMP MSG - CQLChainId::applyContext - FROM class does not exist");
242 humberto 1.1.2.18 throw CQLValidationException( 243 MessageLoaderParms(String("CQL.CQLChainedIdentifier.FROM_CLASS_DOES_NOT_EXIST"), 244 String("The FROM class does not exist while applying context.")) 245 );
246 chuck 1.1.2.16 } 247 } 248 }
249 chuck 1.1.2.10 } 250 else 251 { 252 // The firstId was found in the FROM list, but it could have been 253 // an alias 254 if (!matchedId.getName().equal(firstId.getName())) 255 { 256 // It was an alias. 257 // Replace the alias with the FROM class 258 _subIdentifiers[0] = matchedId; 259 } 260 else 261 { 262 // It was not an alias. Do nothing. 263 ; 264 }
265 chuck 1.1.2.5 } 266 } 267 } 268 }
269 chuck 1.1.2.10
270 chuck 1.1.2.13 // Go through and replace any aliases on scoping classes
271 chuck 1.1.2.10 for (Uint32 i = 0; i < _subIdentifiers.size(); i++) 272 { 273 if (_subIdentifiers[i].isScoped()) 274 { 275 CQLIdentifier match = inContext.findClass(_subIdentifiers[i].getScope());
276 chuck 1.1.2.13 if (match.getName().getString().size() != 0)
277 chuck 1.1.2.10 {
278 chuck 1.1.2.13 // The scoping class was either the FROM class, or an alias of the 279 // FROM class. Replace the scoping class with the FROM class.
280 chuck 1.1.2.10 _subIdentifiers[i].applyScope(match.getName().getString()); 281 } 282 } 283 }
284 humberto 1.1.2.1 } 285 286 void CQLChainedIdentifierRep::parse(String & string){ 287 /* 288 - parse string on "." 289 - start from the end of string 290 - if more than one substring found, 291 -- store first found string then 292 -- prepend remaining substrings 293 / 294 Char16 delim('.'); 295 Uint32 index; 296 String range; 297 298 / remove any array ranges so we dont parse a false . / 299 if((index = string.find("[")) != PEG_NOT_FOUND){ 300 range = string.subString(index); 301 string.remove(index); 302 } 303 304 index = string.reverseFind(delim); 305 humberto 1.1.2.1 if(index == PEG_NOT_FOUND){ 306 / append the range we may have removed / 307 string.append(range); 308 _subIdentifiers.append(CQLIdentifier(string)); 309 }else{ 310 / append the range we may have removed */ 311 String tmp = string.subString(index+1); 312 tmp.append(range); 313 _subIdentifiers.append(CQLIdentifier(tmp)); 314 315 while(index != PEG_NOT_FOUND){ 316 tmp = string.subString(0,index); 317 index = tmp.reverseFind(delim); 318 if(index == PEG_NOT_FOUND){ 319 _subIdentifiers.prepend(CQLIdentifier(tmp)); 320 } 321 else{ 322 _subIdentifiers.prepend(CQLIdentifier(tmp.subString(index+1))); 323 } 324 } 325 } 326 humberto 1.1.2.1 } 327 328 PEGASUS_NAMESPACE_END

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