include/Statement.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Prabakaran Thirumalai   *
   3  *   praba_tuty@yahoo.com   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef STATEMENT_H
  21 #define STATEMENT_H
  22 #include "Parser.h"
  23
  24 class Statement
  25 {
  26     protected:
  27     ParsedData *parsedData;
  28     DatabaseManager *dbMgr;
  29
  30     public:
  31     void setParsedData(ParsedData *pData) {  parsedData = pData; }
  32     void setDbMgr(DatabaseManager *dbmgr) { dbMgr = dbmgr; }
  33
  34
  35     virtual int noOfParamFields() { return  0; }
  36     virtual DbRetVal execute(int &rowsAffected)=0;
  37     virtual DbRetVal setParam(int paramNo, void *value)=0;
  38
  39     virtual DbRetVal setShortParam(int paramNo, short value)=0;
  40     virtual DbRetVal setIntParam(int paramNo, int value)=0;
  41     virtual DbRetVal setLongParam(int paramNo, long value)=0;
  42     virtual DbRetVal setLongLongParam(int paramNo, long long value)=0;
  43     virtual DbRetVal setByteIntParam(int paramNo, ByteInt value)=0;
  44     virtual DbRetVal setFloatParam(int paramNo, float value)=0;
  45     virtual DbRetVal setDoubleParam(int paramNo, double value)=0;
  46     virtual DbRetVal setStringParam(int paramNo, char *value)=0;
  47     virtual DbRetVal setDateParam(int paramNo, Date value)=0;
  48     virtual DbRetVal setTimeParam(int paramNo, Time value)=0;
  49     virtual DbRetVal setTimeStampParam(int paramNo, TimeStamp value)=0;
  50
  51
  52     virtual DbRetVal resolve()=0;
  53     virtual ~Statement(){}
  54 };
  55
  56 class DmlStatement : public Statement
  57 {
  58     protected:
  59     Table *table;
  60
  61     void **params;
  62     //used to store FieldValue* for insert or ConditionValue* for other stmts
  63
  64     char **paramValues;
  65     int totalParams;
  66
  67     public:
  68     int noOfParamFields() { return totalParams; }
  69     virtual DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info) =0;
  70
  71     virtual DbRetVal execute(int &rowsAffected)=0;
  72     virtual DbRetVal setParam(int paramNo, void *value)=0;
  73
  74     virtual DbRetVal setShortParam(int paramNo, short value)=0;
  75     virtual DbRetVal setIntParam(int paramNo, int value)=0;
  76     virtual DbRetVal setLongParam(int paramNo, long value)=0;
  77     virtual DbRetVal setLongLongParam(int paramNo, long long value)=0;
  78     virtual DbRetVal setByteIntParam(int paramNo, ByteInt value)=0;
  79     virtual DbRetVal setFloatParam(int paramNo, float value)=0;
  80     virtual DbRetVal setDoubleParam(int paramNo, double value)=0;
  81     virtual DbRetVal setStringParam(int paramNo, char *value)=0;
  82     virtual DbRetVal setDateParam(int paramNo, Date value)=0;
  83     virtual DbRetVal setTimeParam(int paramNo, Time value)=0;
  84     virtual DbRetVal setTimeStampParam(int paramNo, TimeStamp value)=0;
  85
  86
  87     virtual DbRetVal resolve()=0;
  88     virtual void* getParamValuePtr( int pos )=0;
  89     virtual ~DmlStatement(){}
  90 };
  91
  92 class InsStatement : public DmlStatement
  93 {
  94     public:
  95     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
  96
  97     DbRetVal execute(int &rowsAffected);
  98     DbRetVal setParam(int paramNo, void *value);
  99
 100     DbRetVal setShortParam(int paramNo, short value);
 101     DbRetVal setIntParam(int paramNo, int value);
 102     DbRetVal setLongParam(int paramNo, long value);
 103     DbRetVal setLongLongParam(int paramNo, long long value);
 104     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 105     DbRetVal setFloatParam(int paramNo, float value);
 106     DbRetVal setDoubleParam(int paramNo, double value);
 107     DbRetVal setStringParam(int paramNo, char *value);
 108     DbRetVal setDateParam(int paramNo, Date value);
 109     DbRetVal setTimeParam(int paramNo, Time value);
 110     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 111     void* getParamValuePtr( int );
 112     DbRetVal resolve();
 113     InsStatement();
 114     ~InsStatement();
 115 };
 116
 117 class SelStatement : public DmlStatement
 118 {
 119     private:
 120     DbRetVal resolveStar();
 121     DbRetVal setBindFieldAndValues();
 122     DbRetVal resolveForCondition();
 123
 124     public:
 125     FieldValue **bindFields;
 126     char **bindFieldValues;
 127     int totalFields;
 128
 129
 130     DbRetVal execute(int &rowsAffected);
 131     DbRetVal setParam(int paramNo, void *value);
 132
 133     DbRetVal setShortParam(int paramNo, short value);
 134     DbRetVal setIntParam(int paramNo, int value);
 135     DbRetVal setLongParam(int paramNo, long value);
 136     DbRetVal setLongLongParam(int paramNo, long long value);
 137     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 138     DbRetVal setFloatParam(int paramNo, float value);
 139     DbRetVal setDoubleParam(int paramNo, double value);
 140     DbRetVal setStringParam(int paramNo, char *value);
 141     DbRetVal setDateParam(int paramNo, Date value);
 142     DbRetVal setTimeParam(int paramNo, Time value);
 143     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 144
 145     DbRetVal close();
 146     DbRetVal resolve();
 147     SelStatement();
 148     ~SelStatement();
 149
 150
 151     DbRetVal setBindField(int pos, void* value);
 152
 153     int noOfProjFields();
 154     DbRetVal getProjFldInfo (int projpos, FieldInfo *&fInfo);
 155     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 156
 157     void *getParamValuePtr( int );
 158     DataType getFieldType( int );
 159     int getFieldLength( int );
 160     char* getFieldName( int );
 161
 162     void *fetch();
 163     void *fetch(DbRetVal &rv);
 164     void *fetchAndPrint(bool SQL);
 165     void *next();
 166     void *getFieldValuePtr( int );
 167 };
 168
 169 class UpdStatement : public DmlStatement
 170 {
 171     public:
 172     DbRetVal execute(int &rowsAffected);
 173     DbRetVal setParam(int paramNo, void *value);
 174
 175     DbRetVal setShortParam(int paramNo, short value);
 176     DbRetVal setIntParam(int paramNo, int value);
 177     DbRetVal setLongParam(int paramNo, long value);
 178     DbRetVal setLongLongParam(int paramNo, long long value);
 179     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 180     DbRetVal setFloatParam(int paramNo, float value);
 181     DbRetVal setDoubleParam(int paramNo, double value);
 182     DbRetVal setStringParam(int paramNo, char *value);
 183     DbRetVal setDateParam(int paramNo, Date value);
 184     DbRetVal setTimeParam(int paramNo, Time value);
 185     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 186     void* getParamValuePtr(int);
 187     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 188
 189
 190     DbRetVal resolve();
 191     UpdStatement();
 192     ~UpdStatement();
 193
 194     int totalAssignParams;
 195     DbRetVal resolveForAssignment();
 196 };
 197
 198 class DelStatement : public DmlStatement
 199 {
 200     public:
 201     DbRetVal execute(int &rowsAffected);
 202     DbRetVal setParam(int paramNo, void *value);
 203
 204     DbRetVal setShortParam(int paramNo, short value);
 205     DbRetVal setIntParam(int paramNo, int value);
 206     DbRetVal setLongParam(int paramNo, long value);
 207     DbRetVal setLongLongParam(int paramNo, long long value);
 208     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 209     DbRetVal setFloatParam(int paramNo, float value);
 210     DbRetVal setDoubleParam(int paramNo, double value);
 211     DbRetVal setStringParam(int paramNo, char *value);
 212     DbRetVal setDateParam(int paramNo, Date value);
 213     DbRetVal setTimeParam(int paramNo, Time value);
 214     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 215
 216     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 217     void* getParamValuePtr(int);
 218     DbRetVal resolve();
 219     DelStatement();
 220     ~DelStatement();
 221
 222     DbRetVal resolveForCondition(); //TODO::put this is Statement class, duplicated from SelStatement.
 223
 224 };
 225
 226 class DdlStatement : public Statement
 227 {
 228     public:
 229     DbRetVal execute(int &rowsAffected)=0;
 230     //TODO: i think rowsAffected is not part of ddl - gopal said its design decision
 231     DbRetVal resolve()=0;
 232
 233     DbRetVal setParam(int paramNo, void *value) { }
 234     DbRetVal setShortParam(int paramNo, short value) { }
 235     DbRetVal setIntParam(int paramNo, int value) { }
 236     DbRetVal setLongParam(int paramNo, long value) { }
 237     DbRetVal setLongLongParam(int paramNo, long long value) { }
 238     DbRetVal setByteIntParam(int paramNo, ByteInt value) { }
 239     DbRetVal setFloatParam(int paramNo, float value) { }
 240     DbRetVal setDoubleParam(int paramNo, double value) { }
 241     DbRetVal setStringParam(int paramNo, char *value) { }
 242     DbRetVal setDateParam(int paramNo, Date value) { }
 243     DbRetVal setTimeParam(int paramNo, Time value) { }
 244     DbRetVal setTimeStampParam(int paramNo, TimeStamp value) { }
 245 };
 246
 247 class CreateTblStatement : public DdlStatement
 248 {
 249     public:
 250     DbRetVal execute(int &rowsAffected);
 251     DbRetVal resolve();
 252
 253     CreateTblStatement();
 254     ~CreateTblStatement();
 255
 256     private:
 257     char tblName[IDENTIFIER_LENGTH];
 258     TableDef tblDef;
 259 };
 260
 261 class CreateIdxStatement : public DdlStatement
 262 {
 263     public:
 264     DbRetVal execute(int &rowsAffected);
 265     DbRetVal resolve(){return OK; }
 266
 267     CreateIdxStatement();
 268     ~CreateIdxStatement();
 269
 270 };
 271
 272 class DropTblStatement : public DdlStatement
 273 {
 274     public:
 275     DbRetVal execute(int &rowsAffected);
 276     DbRetVal resolve(){return OK; }
 277
 278     DropTblStatement(){}
 279     ~DropTblStatement(){}
 280 };
 281 class DropIdxStatement : public DdlStatement
 282 {
 283     public:
 284     DbRetVal execute(int &rowsAffected);
 285     DbRetVal resolve() {return OK; }
 286
 287     DropIdxStatement(){}
 288     ~DropIdxStatement(){}
 289 };
 290
 291 class StatementFactory
 292 {
 293     public:
 294     static Statement* getStatement(ParsedData *pData );
 295 };
 296 #endif