src/tools/isql.cxx

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by www.databasecache.com                           *
   3  *   Contact: praba_tuty@databasecache.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  ***************************************************************************/
  16 #include<CSql.h>
  17 #include<DatabaseManagerImpl.h>
  18 #include <Statement.h>
  19 #include <SqlFactory.h>
  20 #include <SqlStatement.h>
  21 #include <SqlNwConnection.h>
  22 #include <SqlNwStatement.h>
  23 #define SQL_STMT_LEN 1024
  24 enum STMT_TYPE
  25 {
  26     SELECT =0,
  27     DDL ,
  28     OTHER
  29 };
  30 STMT_TYPE stmtType = SELECT;
  31 FILE *fp;
  32 AbsSqlConnection *conn;
  33 AbsSqlStatement *stmt;
  34 SqlApiImplType type = CSqlUnknown;
  35 bool gateway=false, silent=false;
  36 bool autocommitmode = true;
  37 bool network = false;
  38 IsolationLevel isoLevel = READ_COMMITTED;
  39 void printHelp();
  40 bool getInput(bool);
  41 void printUsage()
  42 {
  43    printf("Usage: csql [ [-u username] [-p passwd] ] [ [-H hostname] [-P port] ]\n");
  44    printf("            [-s sqlfile] \n");
  45    printf("       username -> username to connect to database\n");
  46    printf("       password -> password to connect to database\n");
  47    printf("       hostname -> hostname to connect to database through network\n");
  48    printf("       port     -> port no\n");
  49    printf("       sqlfile  -> filename containing sql statements\n");
  50    return;
  51
  52 }
  53
  54 int main(int argc, char **argv)
  55 {
  56     char username[IDENTIFIER_LENGTH];
  57     username [0] = '\0';
  58     char password[IDENTIFIER_LENGTH];
  59     password [0] = '\0';
  60     char hostname[IDENTIFIER_LENGTH];
  61     hostname[0] = '\0';
  62     char port[8];
  63     port[0] ='\0';
  64     char filename[512];
  65     filename [0] ='\0';
  66     int c = 0, opt=0;
  67     while ((c = getopt(argc, argv, "u:p:s:H:P:gS?")) != EOF)
  68     {
  69         switch (c)
  70         {
  71             case 'u' : strcpy(username , argv[optind - 1]); break;
  72             case 'p' : strcpy(password , argv[optind - 1]); break;
  73             case 's' : strcpy(filename , argv[optind - 1]); break;
  74             case '?' : { opt = 1; break; } //print help
  75             case 'S' : { silent = true; break; } //silent
  76             case 'g' : { gateway = true; break; } //print help
  77             case 'H' : { strcpy (hostname, argv[optind - 1]);
  78                          network = true; break; }
  79             case 'P' : { strcpy (port,     argv[optind - 1]);
  80                          network = true; break; }
  81             default: printf("Wrong args\n"); exit(1);
  82
  83         }
  84     }//while options
  85     //printf("%s %s %s", username, password, filename);
  86     if (opt == 1)
  87     {
  88         printUsage();
  89         return 0;
  90     }
  91     if (username[0] == '\0' )
  92     {
  93         strcpy(username, "root");
  94         strcpy(password, "manager");
  95     }
  96     if (network) {
  97         if (hostname[0] == '\0') { printUsage(); return 0; }
  98         if (port[0] == '\0') { printUsage(); return 0; }
  99     }
 100     bool fileFlag = false;
 101     if (filename [0] !='\0')
 102     {
 103         fp = fopen(filename,"r");
 104         if (fp == NULL)
 105         {
 106             printf("Unable to open the file %s\n", filename);
 107             return 1;
 108         }
 109         fileFlag = true;
 110     }
 111
 112     DbRetVal rv = OK;
 113     if (network) {
 114         if (gateway) type = CSqlNetworkGateway;
 115         else type = CSqlNetwork;
 116         conn = SqlFactory::createConnection(type);
 117         SqlNwConnection *con = (SqlNwConnection *)conn;
 118         con->setHost(hostname, atoi(port));
 119     }
 120     else {
 121         if (gateway) type = CSqlGateway;
 122         else type = CSql;
 123         conn = SqlFactory::createConnection(type);
 124     }
 125     rv = conn->connect(username,password);
 126     if (rv != OK) return 1;
 127     stmt = SqlFactory::createStatement(type);
 128     stmt->setConnection(conn);
 129     //rv = conn->beginTrans(READ_COMMITTED, TSYNC);
 130     rv = conn->beginTrans();
 131     if (rv != OK) return 2;
 132     while (getInput(fileFlag) == true) continue;
 133
 134     //TODO::conn should provide method telling status of the transaction.
 135     //if running, then abort it
 136     conn->rollback();
 137     if (filename [0] !='\0')
 138     {
 139        fclose(fp);
 140     }
 141     conn->disconnect();
 142     delete stmt;
 143     delete conn;
 144     return 0;
 145 }
 146 bool handleTransaction(char *st)
 147 {
 148     while (isspace (*st)|| *st == '(' ) st++; // Skip white spaces
 149     if (strcasecmp (st, "COMMIT;") == 0 ||
 150         strcasecmp (st, "commit;") == 0 )
 151     {
 152         conn->commit();
 153         //conn->beginTrans(isoLevel, TSYNC);
 154         conn->beginTrans(isoLevel);
 155         return true;
 156     }
 157     else if (strcasecmp (st, "ROLLBACK;") == 0||
 158         strcasecmp (st, "rollback;") == 0)
 159     {
 160         conn->rollback();
 161         //conn->beginTrans(isoLevel, TSYNC);
 162         conn->beginTrans(isoLevel);
 163         return true;
 164     }
 165     else if (strcasecmp (st, "SET AUTOCOMMIT ON;") == 0)
 166     {
 167         autocommitmode = true;
 168         if (!silent) printf("AUTOCOMMIT Mode is set to ON\n");
 169         return true;
 170     }
 171     else if (strcasecmp (st, "SET AUTOCOMMIT OFF;") == 0)
 172     {
 173         autocommitmode = false;
 174         if (!silent) printf("AUTOCOMMIT Mode is set to OFF\n");
 175         return true;
 176     }
 177     else if (strcasecmp (st, "SET ISOLATION LEVEL UNCOMMITTED;") == 0)
 178     {
 179         isoLevel = READ_UNCOMMITTED;
 180         printf("Isolation Level is set to READ_UNCOMMITTED\n");
 181         return true;
 182     }
 183     else if (strcasecmp (st, "SET ISOLATION LEVEL COMMITTED;") == 0)
 184     {
 185         isoLevel = READ_COMMITTED;
 186         printf("Isolation Level is set to READ_COMMITTED\n");
 187         return true;
 188     }
 189     else if (strcasecmp (st, "SET ISOLATION LEVEL REPEATABLE;") == 0)
 190     {
 191         isoLevel = READ_REPEATABLE;
 192         printf("Isolation Level is set to READ_REPEATABLE\n");
 193         return true;
 194     }
 195     return false;
 196 }
 197 bool handleEchoAndComment(char *st)
 198 {
 199     while (isspace (*st)|| *st == '(' ) st++; // Skip white spaces
 200     if (strncasecmp (st, "ECHO", 4) == 0)
 201     {
 202         printf("%s\n", st);
 203         return true;
 204     }else if (strncmp(st, "--", 2) == 0)
 205     {
 206         return true;
 207     }else if (strncasecmp(st, "help", 2) == 0)
 208     {
 209         printHelp();
 210         return true;
 211     }else if (strcasecmp(st, "show tables;") == 0) {
 212       List tableList = stmt->getAllTableNames();
 213       ListIterator iter = tableList.getIterator();
 214       Identifier *elem = NULL;
 215       int ret =0;
 216       printf("=============TableNames===================\n");
 217       int count =0;
 218       while (iter.hasElement())
 219       {
 220           elem = (Identifier*) iter.nextElement();
 221           count++;
 222           printf("   %s \n", elem->name);
 223       }
 224       if (count ==0) printf("  No tables exist\n");
 225       printf("==========================================\n");
 226
 227         return true;
 228     }
 229     return false;
 230 }
 231 void printHelp()
 232 {
 233     printf("CSQL Command List\n");
 234     printf("======================================================\n");
 235     printf("SHOW TABLES\n");
 236     printf("SET AUTOCOMMIT ON|OFF\n");
 237     printf("SET ISOLATION LEVEL UNCOMMITTED|COMMITTED|REPEATABLE\n");
 238     printf("CREATE TABLE|INDEX ...\n");
 239     printf("INSERT ...\n");
 240     printf("UPDATE ...\n");
 241     printf("DELETE ...\n");
 242     printf("SELECT ...\n");
 243     printf("======================================================\n");
 244 }
 245 void setStmtType(char *st)
 246 {
 247    if (strncasecmp (st, "SELECT", 6) == 0)  {stmtType=SELECT; return; }
 248    else if (strncasecmp (st, "CREATE", 6) == 0) {stmtType=DDL; return; }
 249    else if (strncasecmp (st, "DROP", 4) == 0) { stmtType=DDL; return; }
 250    stmtType = OTHER;
 251    return ;
 252 }
 253
 254 char getQueryFromStdIn(char *buf)
 255 {
 256     char    c, *bufBegin=buf;
 257     int    ln, charCnt=0;
 258
 259     ln=1;
 260     printf("CSQL>");
 261     while( (c=(char ) getchar()) != EOF && c != ';')
 262     {
 263         *buf++ = c; charCnt++;
 264         if(c=='\n') //printf("%1d>",ln++);
 265             ln++;
 266         if( charCnt == SQL_STMT_LEN ) {
 267             printf("SQL Statement length is greater than %d. "
 268             "Ignoring the statement.\n", SQL_STMT_LEN );
 269             *bufBegin++ =';';
 270             *bufBegin ='\0';
 271             return 0;
 272         }
 273     }
 274     *buf++ = ';';
 275     *buf = '\0';
 276     return c;
 277 }
 278 char getQueryFromFile(char *buf)
 279 {
 280     char    c, *bufBegin=buf;
 281     int charCnt=0;
 282     while( (c=(char ) fgetc(fp)) != EOF && c != ';')
 283     {
 284         *buf++ = c; charCnt++;
 285         if( charCnt == SQL_STMT_LEN ) {
 286             printf("SQL Statement length is greater than %d. "
 287             "Ignoring the statement.\n", SQL_STMT_LEN );
 288             *bufBegin++ =';';
 289             *bufBegin ='\0';
 290             return 0;
 291         }
 292     }
 293     *buf++ = ';';
 294     *buf = '\0';
 295     return c;
 296 }
 297
 298 bool getInput(bool fromFile)
 299 {
 300     char buffer [SQL_STMT_LEN + 1];
 301
 302     char eof;
 303     if (fromFile == false)
 304         eof = getQueryFromStdIn(buffer);
 305     else
 306         eof = getQueryFromFile(buffer);
 307
 308     char *buf = buffer;
 309     while(*buf == ' ' || *buf == '\t' || *buf == '\n') buf++;
 310     if (eof == EOF || strncasecmp (buf, "quit", 4) == 0)
 311         return false;
 312     if (handleTransaction(buf)) return true;
 313     if (handleEchoAndComment(buf)) return true;
 314     if ( *buf == ';' ) return true; // Null statement.
 315
 316     setStmtType(buf);
 317
 318     DbRetVal rv = stmt->prepare(buf);
 319     if (rv != OK)
 320     {
 321         printf("Statement prepare failed with error %d\n", rv);
 322         return true;
 323     }
 324     int rows =0;
 325     rv = stmt->execute(rows);
 326     if (rv != OK)
 327     {
 328         printf("Statement execute failed with error %d\n", rv);
 329         stmt->free();
 330         return true;
 331     }
 332     if (stmtType == OTHER)
 333     {
 334         if (!silent) printf("Statement Executed: Rows Affected = %d\n", rows);
 335     }
 336     else if (stmtType == DDL)
 337     {
 338         if (!silent) printf("Statement Executed\n");
 339     }
 340     else
 341     {
 342         FieldInfo *info = new FieldInfo();
 343         printf("---------------------------------------------------------\n");
 344         printf("\t");
 345         for (int i = 0 ; i < stmt->noOfProjFields() ; i++)
 346         {
 347                         stmt->getProjFldInfo(i+1, info);
 348             printf("%s\t", info->fldName);
 349         }
 350         printf("\n---------------------------------------------------------\n");
 351         delete info;
 352         void *tuple = NULL;
 353         while(true)
 354         {
 355             printf("\t");
 356             tuple = (char*)stmt->fetchAndPrint(false);
 357             printf("\n");
 358             if (tuple == NULL) { break; }
 359         }
 360         stmt->close();
 361     }
 362     stmt->free();
 363     if (autocommitmode)
 364     {
 365         conn->commit();
 366         //conn->beginTrans(isoLevel, TSYNC);
 367         conn->beginTrans(isoLevel);
 368         return true;
 369     }
 370     return true;
 371 }