test/dbapi/Connection/conntest15.c

   1 //Update a tuple in a transaction and abort it
   2 //scan should not display the inserted tuple.
   3
   4 #include<CSql.h>
   5 int main()
   6 {
   7    Connection conn;
   8    DbRetVal rv = conn.open("root", "manager");
   9    if (rv != OK) { printf("Unable  to open database\n"); return 1;}
  10    DatabaseManager *dbMgr = conn.getDatabaseManager();
  11    if (dbMgr == NULL) { printf("Auth failed\n"); return 2;}
  12    TableDef tabDef;
  13    tabDef.addField("f1", typeInt);
  14    tabDef.addField("f2", typeString, 196);
  15    rv = dbMgr->createTable("t1", tabDef);
  16    if (rv != OK) { printf("Table creation failed\n"); return 3; }
  17    printf("Table created\n");
  18    Table *table = dbMgr->openTable("t1");
  19    if (table == NULL) { printf("Unable to open table\n"); return 4; }
  20    int id = 0;
  21    char name[196] = "ARVIND KOTHI";
  22    table->bindFld("f1", &id);
  23    table->bindFld("f2", name);
  24    int i;
  25    for (i=0; i<10; i++)
  26    {
  27       id=i;
  28       conn.startTransaction();
  29       rv = table->insertTuple();
  30       if (rv != OK)
  31       {
  32            printf("Insertion failed at %d th tuple", i+1);
  33            dbMgr->closeTable(table);
  34            dbMgr->dropTable("t1");
  35            return 5;
  36       }
  37       conn.commit();
  38     }
  39     printf("%d tuples are inserted into the dababase\n", i);
  40
  41     conn.startTransaction();
  42     Condition p;
  43     int val = 3;
  44     p.setTerm("f1", OpEquals, &val);
  45     table->setCondition(&p);
  46     table->execute();
  47     void *tuple;
  48     while(true)
  49     {
  50        tuple=(char*)table->fetch();
  51        if (tuple == NULL) break;
  52        strcpy(name,"Kanchana");
  53        rv = table->updateTuple();
  54        if (rv != OK)
  55        {
  56            printf("Updation failed ");
  57            dbMgr->closeTable(table);
  58            dbMgr->dropTable("t1");
  59            return 6;
  60        }
  61        printf("Updated tuple value is %d %s",id,name);
  62     }
  63     table->closeScan();
  64     conn.rollback();
  65     table->setCondition(NULL);
  66     table->execute();
  67     while(true)
  68     {
  69         tuple = (char*)table->fetch() ;
  70         if (tuple == NULL) {break;}
  71         printf("\nBinded Tuple value is %d %s", id, name);
  72     }
  73
  74     table->closeScan();
  75     dbMgr->closeTable(table);
  76     dbMgr->dropTable("t1");
  77     conn.close();
  78     return 0;
  79 }
  80
  81