src/sql/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     virtual DbRetVal setBinaryParam(int paramNo, void *value)=0;
  51     virtual DbRetVal resolve()=0;
  52     virtual bool isFldNull(int pos)=0;
  53     virtual int getFldPos(char *name)=0;
  54     virtual DbRetVal setNull(int pos)=0;
  55     virtual ~Statement(){}
  56 };
  57
  58 class DmlStatement : public Statement
  59 {
  60     protected:
  61     Table *table;
  62
  63     void **params;
  64     //used to store FieldValue* for insert or ConditionValue* for other stmts
  65
  66     char **paramValues;
  67     int totalParams;
  68
  69     public:
  70     int noOfParamFields() { return totalParams; }
  71     virtual DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info) =0;
  72
  73     virtual DbRetVal execute(int &rowsAffected)=0;
  74     virtual DbRetVal setParam(int paramNo, void *value)=0;
  75
  76     virtual DbRetVal setShortParam(int paramNo, short value)=0;
  77     virtual DbRetVal setIntParam(int paramNo, int value)=0;
  78     virtual DbRetVal setLongParam(int paramNo, long value)=0;
  79     virtual DbRetVal setLongLongParam(int paramNo, long long value)=0;
  80     virtual DbRetVal setByteIntParam(int paramNo, ByteInt value)=0;
  81     virtual DbRetVal setFloatParam(int paramNo, float value)=0;
  82     virtual DbRetVal setDoubleParam(int paramNo, double value)=0;
  83     virtual DbRetVal setStringParam(int paramNo, char *value)=0;
  84     virtual DbRetVal setDateParam(int paramNo, Date value)=0;
  85     virtual DbRetVal setTimeParam(int paramNo, Time value)=0;
  86     virtual DbRetVal setTimeStampParam(int paramNo, TimeStamp value)=0;
  87     virtual DbRetVal setBinaryParam(int paramNo, void *value)=0;
  88     virtual bool isFldNull(int pos)=0;
  89     virtual DbRetVal setNull(int pos)=0;
  90     virtual DbRetVal resolve()=0;
  91     virtual void* getParamValuePtr( int pos )=0;
  92     virtual int getFldPos(char *name)=0;
  93     virtual ~DmlStatement(){}
  94 };
  95
  96 class InsStatement : public DmlStatement
  97 {
  98     public:
  99     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 100
 101     DbRetVal execute(int &rowsAffected);
 102     DbRetVal setParam(int paramNo, void *value);
 103
 104     DbRetVal setShortParam(int paramNo, short value);
 105     DbRetVal setIntParam(int paramNo, int value);
 106     DbRetVal setLongParam(int paramNo, long value);
 107     DbRetVal setLongLongParam(int paramNo, long long value);
 108     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 109     DbRetVal setFloatParam(int paramNo, float value);
 110     DbRetVal setDoubleParam(int paramNo, double value);
 111     DbRetVal setStringParam(int paramNo, char *value);
 112     DbRetVal setDateParam(int paramNo, Date value);
 113     DbRetVal setTimeParam(int paramNo, Time value);
 114     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 115         DbRetVal setBinaryParam(int paramNo, void *value);
 116     bool isFldNull(int pos){return table->isFldNull(pos);}
 117     void* getParamValuePtr( int );
 118     int getFldPos(char *name);
 119     DbRetVal setNull(int pos);
 120     DbRetVal resolve();
 121     InsStatement();
 122     ~InsStatement();
 123 };
 124
 125 class SelStatement : public DmlStatement
 126 {
 127     private:
 128     DbRetVal resolveStar();
 129     DbRetVal setBindFieldAndValues();
 130     DbRetVal resolveForCondition();
 131
 132     public:
 133     FieldValue **bindFields;
 134     char **bindFieldValues;
 135     int totalFields;
 136
 137
 138     DbRetVal execute(int &rowsAffected);
 139     DbRetVal setParam(int paramNo, void *value);
 140
 141     DbRetVal setShortParam(int paramNo, short value);
 142     DbRetVal setIntParam(int paramNo, int value);
 143     DbRetVal setLongParam(int paramNo, long value);
 144     DbRetVal setLongLongParam(int paramNo, long long value);
 145     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 146     DbRetVal setFloatParam(int paramNo, float value);
 147     DbRetVal setDoubleParam(int paramNo, double value);
 148     DbRetVal setStringParam(int paramNo, char *value);
 149     DbRetVal setDateParam(int paramNo, Date value);
 150     DbRetVal setTimeParam(int paramNo, Time value);
 151     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 152     DbRetVal setBinaryParam(int paramNo, void *value);
 153
 154     DbRetVal replaceStarWithFirstFldName(FieldName *name);
 155     DbRetVal resolveGroupFld(AggTableImpl *impl);
 156     bool isFldNull(int pos){return table->isFldNull(pos);}
 157     int getFldPos(char *name);
 158     DbRetVal setNull(int pos){}
 159     DbRetVal close();
 160     DbRetVal freeScan();
 161     DbRetVal resolve();
 162     SelStatement();
 163     ~SelStatement();
 164
 165     DbRetVal openTables();
 166 //    DbRetVal resolveGroupFld(AggTableImpl *impl);
 167
 168     DbRetVal setBindField(int pos, void* value);
 169
 170     int noOfProjFields();
 171     DbRetVal getProjFldInfo (int projpos, FieldInfo *&fInfo);
 172     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 173
 174     void *getParamValuePtr( int );
 175     DataType getFieldType( int );
 176     int getFieldLength( int );
 177     char* getFieldName( int );
 178
 179     void *fetch();
 180     void *fetch(DbRetVal &rv);
 181     void *fetchAndPrint(bool SQL);
 182     void *next();
 183     void *getFieldValuePtr( int );
 184 };
 185
 186 class UpdStatement : public DmlStatement
 187 {
 188     public:
 189     DbRetVal execute(int &rowsAffected);
 190     DbRetVal setParam(int paramNo, void *value);
 191
 192     DbRetVal setShortParam(int paramNo, short value);
 193     DbRetVal setIntParam(int paramNo, int value);
 194     DbRetVal setLongParam(int paramNo, long value);
 195     DbRetVal setLongLongParam(int paramNo, long long value);
 196     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 197     DbRetVal setFloatParam(int paramNo, float value);
 198     DbRetVal setDoubleParam(int paramNo, double value);
 199     DbRetVal setStringParam(int paramNo, char *value);
 200     DbRetVal setDateParam(int paramNo, Date value);
 201     DbRetVal setTimeParam(int paramNo, Time value);
 202     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 203     DbRetVal setBinaryParam(int paramNo, void *value);
 204     void* getParamValuePtr(int);
 205     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 206     bool isFldNull(int pos){return table->isFldNull(pos);}
 207     int getFldPos(char *name);
 208     DbRetVal setNull(int pos){}
 209     DbRetVal resolve();
 210     UpdStatement();
 211     ~UpdStatement();
 212
 213     int totalAssignParams;
 214     DbRetVal resolveForAssignment();
 215 };
 216
 217 class DelStatement : public DmlStatement
 218 {
 219     public:
 220     DbRetVal execute(int &rowsAffected);
 221     DbRetVal setParam(int paramNo, void *value);
 222
 223     DbRetVal setShortParam(int paramNo, short value);
 224     DbRetVal setIntParam(int paramNo, int value);
 225     DbRetVal setLongParam(int paramNo, long value);
 226     DbRetVal setLongLongParam(int paramNo, long long value);
 227     DbRetVal setByteIntParam(int paramNo, ByteInt value);
 228     DbRetVal setFloatParam(int paramNo, float value);
 229     DbRetVal setDoubleParam(int paramNo, double value);
 230     DbRetVal setStringParam(int paramNo, char *value);
 231     DbRetVal setDateParam(int paramNo, Date value);
 232     DbRetVal setTimeParam(int paramNo, Time value);
 233     DbRetVal setTimeStampParam(int paramNo, TimeStamp value);
 234     DbRetVal setBinaryParam(int paramNo, void *value);
 235     bool isFldNull(int pos){return table->isFldNull(pos);}
 236     DbRetVal getParamFldInfo(int paramPos, FieldInfo *&info);
 237     void* getParamValuePtr(int);
 238     DbRetVal setNull(int pos){}
 239     DbRetVal resolve();
 240     DelStatement();
 241     ~DelStatement();
 242     int getFldPos(char *name);
 243     DbRetVal resolveForCondition(); //TODO::put this is Statement class, duplicated from SelStatement.
 244
 245 };
 246
 247 class DdlStatement : public Statement
 248 {
 249     public:
 250     DbRetVal execute(int &rowsAffected)=0;
 251     //TODO: i think rowsAffected is not part of ddl - gopal said its design decision
 252     DbRetVal resolve()=0;
 253
 254     DbRetVal setParam(int paramNo, void *value) { }
 255     DbRetVal setShortParam(int paramNo, short value) { }
 256     DbRetVal setIntParam(int paramNo, int value) { }
 257     DbRetVal setLongParam(int paramNo, long value) { }
 258     DbRetVal setLongLongParam(int paramNo, long long value) { }
 259     DbRetVal setByteIntParam(int paramNo, ByteInt value) { }
 260     DbRetVal setFloatParam(int paramNo, float value) { }
 261     DbRetVal setDoubleParam(int paramNo, double value) { }
 262     DbRetVal setStringParam(int paramNo, char *value) { }
 263     DbRetVal setDateParam(int paramNo, Date value) { }
 264     DbRetVal setTimeParam(int paramNo, Time value) { }
 265     DbRetVal setTimeStampParam(int paramNo, TimeStamp value) { }
 266     DbRetVal setBinaryParam(int paramNo, void *value) { }
 267     bool isFldNull(int pos){ }
 268     int getFldPos(char *name){}
 269     DbRetVal setNull(int pos){}
 270 };
 271
 272 class CreateTblStatement : public DdlStatement
 273 {
 274     public:
 275     DbRetVal execute(int &rowsAffected);
 276     DbRetVal resolve();
 277     DbRetVal checkForDot(char *name);
 278     CreateTblStatement();
 279     ~CreateTblStatement();
 280
 281     private:
 282     char tblName[IDENTIFIER_LENGTH];
 283     TableDef tblDef;
 284 };
 285
 286 class CreateIdxStatement : public DdlStatement
 287 {
 288     public:
 289     DbRetVal execute(int &rowsAffected);
 290     DbRetVal resolve(){return OK; }
 291
 292     CreateIdxStatement();
 293     ~CreateIdxStatement();
 294
 295 };
 296
 297 class DropTblStatement : public DdlStatement
 298 {
 299     public:
 300     DbRetVal execute(int &rowsAffected);
 301     DbRetVal resolve(){return OK; }
 302
 303     DropTblStatement(){}
 304     ~DropTblStatement(){}
 305 };
 306 class DropIdxStatement : public DdlStatement
 307 {
 308     public:
 309     DbRetVal execute(int &rowsAffected);
 310     DbRetVal resolve() {return OK; }
 311
 312     DropIdxStatement(){}
 313     ~DropIdxStatement(){}
 314 };
 315
 316 class StatementFactory
 317 {
 318     public:
 319     static Statement* getStatement(ParsedData *pData );
 320 };
 321 #endif