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

Return to CQLChainedIdentifierRep.cpp CVS log

Up to [Pegasus] / pegasus / src / Pegasus / CQL

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 humberto 1.1.2.1 PEGASUS_NAMESPACE_BEGIN 39
40 humberto 1.1.2.3 CQLChainedIdentifierRep::CQLChainedIdentifierRep(){ 41 } 42
43 humberto 1.1.2.1 CQLChainedIdentifierRep::CQLChainedIdentifierRep(String inString) 44 { 45 parse(inString); 46 } 47
48 humberto 1.1.2.12 CQLChainedIdentifierRep::CQLChainedIdentifierRep(const CQLIdentifier &id)
49 humberto 1.1.2.1 { 50 _subIdentifiers.append(id); 51 } 52
53 humberto 1.1.2.3 CQLChainedIdentifierRep::CQLChainedIdentifierRep(const CQLChainedIdentifierRep* rep){ 54 _subIdentifiers = rep->_subIdentifiers; 55 } 56 57 CQLChainedIdentifierRep::~CQLChainedIdentifierRep(){ 58
59 humberto 1.1.2.1 } 60 61 const Array<CQLIdentifier>& CQLChainedIdentifierRep::getSubIdentifiers()const 62 { 63 return _subIdentifiers; 64 } 65
66 humberto 1.1.2.12 CQLIdentifier CQLChainedIdentifierRep::getLastIdentifier()const{
67 humberto 1.1.2.1 if(_subIdentifiers.size() > 0) 68 return _subIdentifiers[_subIdentifiers.size()-1]; 69 return CQLIdentifier(); 70 } 71 72 String CQLChainedIdentifierRep::toString()const{ 73 String s; 74 for(Uint32 i = 0; i < _subIdentifiers.size(); i++){ 75 s.append(_subIdentifiers[i].toString()); 76 if(i < _subIdentifiers.size() - 1) 77 s.append("."); 78 } 79 return s; 80 } 81
82 humberto 1.1.2.12 void CQLChainedIdentifierRep::append(const CQLIdentifier & id){
83 humberto 1.1.2.1 _subIdentifiers.append(id); 84 } 85
86 humberto 1.1.2.12 Boolean CQLChainedIdentifierRep::isSubChain(const CQLChainedIdentifier & chain)const{
87 humberto 1.1.2.1 Array<CQLIdentifier> ids = chain.getSubIdentifiers(); 88 for(Uint32 i = 0; i < ids.size(); i++){ 89 if(ids[i] != _subIdentifiers[i].getName()) 90 return false; 91 } 92 return true; 93 } 94 95 CQLIdentifier& CQLChainedIdentifierRep::operator[](Uint32 index){ 96 return _subIdentifiers[index]; 97 } 98
99 humberto 1.1.2.3 CQLChainedIdentifierRep& CQLChainedIdentifierRep::operator=(const CQLChainedIdentifierRep& rhs){ 100 if(&rhs != this){ 101 _subIdentifiers = rhs._subIdentifiers; 102 } 103 return *this; 104 } 105
106 humberto 1.1.2.12 Uint32 CQLChainedIdentifierRep::size()const{
107 humberto 1.1.2.1 return _subIdentifiers.size(); 108 } 109
110 humberto 1.1.2.12 Boolean CQLChainedIdentifierRep::prepend(const CQLIdentifier & id){
111 humberto 1.1.2.1 /* 112 Compare id against the first element in _subIdentifiers, 113 if not an exact match, then prepend. This is used to fully 114 qualify the chained identifier. 115 */ 116 if(id != _subIdentifiers[0]){ 117 _subIdentifiers.prepend(id); 118 return true; 119 } 120 return false; 121 } 122
123 chuck 1.1.2.4 void CQLChainedIdentifierRep::applyContext(QueryContext& inContext) 124 {
125 chuck 1.1.2.9 if (_subIdentifiers.size() == 0) 126 return; 127
128 chuck 1.1.2.11 // Chained identifiers that are standalone symbolic constants 129 // should have had the context applied already. If this method 130 // is called and this is still a standalone symbolic constant, 131 // then that is an error. 132 if (_subIdentifiers.size() == 1 && 133 _subIdentifiers[0].getName().getString().size() == 0 && 134 _subIdentifiers[0].isSymbolicConstant()) 135 { 136 throw Exception("TEMP MSG: CQLChainedIdentifierRep::applyContext - standalone symb const"); 137 } 138
139 chuck 1.1.2.5 CQLIdentifier firstId = _subIdentifiers[0]; 140
141 chuck 1.1.2.13 // Process if the first identifier has some contents. 142 if ((firstId.getName().getString().size() != 0) \|\| firstId.isWildcard())
143 chuck 1.1.2.5 { 144 Array<CQLIdentifier> fromList = inContext.getFromList(); 145 146 if (firstId.isWildcard()) 147 {
148 chuck 1.1.2.13 // Single element chain that is wildcarded. 149 // Prepend the FROM class.
150 chuck 1.1.2.5 _subIdentifiers.prepend(fromList[0]); 151 } 152 else 153 {
154 chuck 1.1.2.13 // Not a single element wildcard.
155 chuck 1.1.2.10 if (firstId.isScoped())
156 chuck 1.1.2.5 {
157 chuck 1.1.2.13 // The first identifier is a scoped property or a 158 // scoped symbolic constant. 159 // Prepend the FROM class. 160 // Example: SELECT * FROM F WHERE someprop = X::p#'OK'
161 chuck 1.1.2.5 _subIdentifiers.prepend(fromList[0]); 162 } 163 else
164 chuck 1.1.2.10 {
165 chuck 1.1.2.13 // The first identifier is not a scoped property or a scoped 166 // symbolic constant. 167 168 // Determine if the first identifier's name is in the FROM list.
169 chuck 1.1.2.10 String classContext = firstId.getName().getString(); 170 CQLIdentifier matchedId = inContext.findClass(classContext);
171 chuck 1.1.2.13 if (matchedId.getName().getString().size() != 0)
172 chuck 1.1.2.5 {
173 chuck 1.1.2.10 // Could not find the firstId in the FROM list.
174 chuck 1.1.2.13 // Assume the firstId is a property on the FROM class, 175 // and prepend the FROM class, except in the case described below. 176 // 177 // NOTE: 178 // We need special handling for symbolic constants, because there are cases 179 // where the first id is a class that is not the FROM class. 180 // Refer to section 5.4.3 of the CQL spec. 181 // 182 // Examples: 183 // SELECT * FROM F WHERE F.someprop = ClassNotInFromList.prop#'OK' 184 // We don't want to prepend the FROM class to ClassNotInFromList 185 // in this case. 186 // 187 // SELECT * FROM F WHERE F.someprop = embeddedObject.X::p#'OK' 188 // Even though embeddedObject may an property on F, and not 189 // a classname, we still don't need to prepend F because the 190 // scoping class X will be used to get the value of 'OK' on property 191 // p. 192 // 193 // SELECT * FROM F WHERE F.someprop = propOnClassF#'OK' 194 // We want to prepend in this case. The identifier propOnClassF 195 chuck 1.1.2.13 // is assumed to be a property on the FROM class, not a classname 196 // itself. 197 // 198 // Note that standalone symbolic constants, like #'OK' 199 // are errors in this code. 200 // See above for details. 201 //
202 chuck 1.1.2.10 if (_subIdentifiers.size() == 1 \|\| 203 !_subIdentifiers[_subIdentifiers.size()-1].isSymbolicConstant()) 204 { 205 _subIdentifiers.prepend(fromList[0]); 206 } 207 } 208 else 209 { 210 // The firstId was found in the FROM list, but it could have been 211 // an alias 212 if (!matchedId.getName().equal(firstId.getName())) 213 { 214 // It was an alias. 215 // Replace the alias with the FROM class 216 _subIdentifiers[0] = matchedId; 217 } 218 else 219 { 220 // It was not an alias. Do nothing. 221 ; 222 }
223 chuck 1.1.2.5 } 224 } 225 } 226 }
227 chuck 1.1.2.10
228 chuck 1.1.2.13 // Go through and replace any aliases on scoping classes
229 chuck 1.1.2.10 for (Uint32 i = 0; i < _subIdentifiers.size(); i++) 230 { 231 if (_subIdentifiers[i].isScoped()) 232 { 233 CQLIdentifier match = inContext.findClass(_subIdentifiers[i].getScope());
234 chuck 1.1.2.13 if (match.getName().getString().size() != 0)
235 chuck 1.1.2.10 {
236 chuck 1.1.2.13 // The scoping class was either the FROM class, or an alias of the 237 // FROM class. Replace the scoping class with the FROM class.
238 chuck 1.1.2.10 _subIdentifiers[i].applyScope(match.getName().getString()); 239 } 240 } 241 }
242 humberto 1.1.2.1 } 243 244 void CQLChainedIdentifierRep::parse(String & string){ 245 /* 246 - parse string on "." 247 - start from the end of string 248 - if more than one substring found, 249 -- store first found string then 250 -- prepend remaining substrings 251 / 252 Char16 delim('.'); 253 Uint32 index; 254 String range; 255 256 / remove any array ranges so we dont parse a false . / 257 if((index = string.find("[")) != PEG_NOT_FOUND){ 258 range = string.subString(index); 259 string.remove(index); 260 } 261 262 index = string.reverseFind(delim); 263 humberto 1.1.2.1 if(index == PEG_NOT_FOUND){ 264 / append the range we may have removed / 265 string.append(range); 266 _subIdentifiers.append(CQLIdentifier(string)); 267 }else{ 268 / append the range we may have removed */ 269 String tmp = string.subString(index+1); 270 tmp.append(range); 271 PEGASUS_STD(cout) << "tmp = " << tmp << PEGASUS_STD(endl); 272 _subIdentifiers.append(CQLIdentifier(tmp)); 273 274 while(index != PEG_NOT_FOUND){ 275 tmp = string.subString(0,index); 276 index = tmp.reverseFind(delim); 277 if(index == PEG_NOT_FOUND){ 278 _subIdentifiers.prepend(CQLIdentifier(tmp)); 279 } 280 else{ 281 _subIdentifiers.prepend(CQLIdentifier(tmp.subString(index+1))); 282 } 283 } 284 humberto 1.1.2.1 } 285 } 286 287 PEGASUS_NAMESPACE_END

No CVS admin address has been configured