C++ CppSQLite3Table::fieldName方法代码示例

EXPORT_C gint32 CContactDb::InitEntityDb(gchar* dbName) /* fill fields name */
	{
	strcpy(m_dbName, dbName);
	OpenDatabase();
	CppSQLite3Table contactTable = m_dbBeluga.getTable("select * from contact limit 1;");
	m_pFieldsName = g_ptr_array_sized_new(contactTable.numFields());
	if (!m_pFieldsName)
		{
		CloseDatabase();
		return ERROR(ESide_Client, EModule_Db, ECode_No_Memory);
		}
			
	for (int i=0; i<contactTable.numFields(); i++)
		g_ptr_array_add(m_pFieldsName, g_string_new((gchar*)contactTable.fieldName(i)));
	
	CloseDatabase();
	return 0;
	}

int main(int argc, char **argv)
{
    testCppSQLite();
    
    try
    {
        DrRobot::Parser file = DrRobot::Parser("files/simple.csv");
        
        CppSQLite3DB* db = getSQLiteDB();
        
        string statement = "create table _data ( "; 
        string headers = "";
        //Print headers
        for(int j=0;j<file.columnCount();j++){
            std::cout << file.getHeaderElement(j) << "\t\t";
            statement += file.getHeaderElement(j)+" TEXT,";
            headers += file.getHeaderElement(j);
            if(j<file.columnCount()-1)
            {
                headers += ",";
            }
        }
        statement+="id INTEGER PRIMARY KEY ASC)";
        std::cout<<std::endl;
        
        std::cout<<statement<<std::endl;
        
        db->execDML(statement.c_str());
        
        for(int i=0;i<file.rowCount();i++) {
            statement = "insert into _data Values(";
            for(int j=0;j<file.columnCount();j++){
                std::cout << file[i][j] << "\t\t";
                statement += "\""+file[i][j]+"\",";
            }
            statement += "null)";
            std::cout << "\n" <<statement << "\t\t";
            db->execDML(statement.c_str());
            
            std::cout<<std::endl;
        }
        
        
        CppSQLite3Table t = db->getTable("select * from _data;");
        
        for (int fld = 0; fld < t.numFields(); fld++)
        {
            cout << t.fieldName(fld) << "|";
        }
        cout << endl;
        for (int row = 0; row < t.numRows(); row++)
        {
            t.setRow(row);
            for (int fld = 0; fld < t.numFields(); fld++)
            {
                if (!t.fieldIsNull(fld))
                    cout << t.fieldValue(fld) << "|";
                else
                    cout << "NULL" << "|";
            }
            cout << endl;
        }
        
    }
    catch (DrRobot::Error &e)
    {
        std::cerr << e.what() << std::endl;
    }
    
    shutDownDB();
    
    return 0;
}

void testCppSQLite()
{
    try
    {
        int i, fld;
        time_t tmStart, tmEnd;
        
        remove(gszFile);
        
        CppSQLite3DB* db = getSQLiteDB();
        cout << "SQLite Version: " << db->SQLiteVersion() << endl;
        
        cout << endl << "Creating emp table" << endl;
        db->execDML("create table emp(empno int, empname char(20));");
        ///////////////////////////////////////////////////////////////
        // Execute some DML, and print number of rows affected by each one
        ///////////////////////////////////////////////////////////////
        cout << endl << "DML tests" << endl;
        int nRows = db->execDML("insert into emp values (7, 'David Beckham');");
        cout << nRows << " rows inserted" << endl;
        
        nRows = db->execDML(
                           "update emp set empname = 'Christiano Ronaldo' where empno = 7;");
        cout << nRows << " rows updated" << endl;
        
        nRows = db->execDML("delete from emp where empno = 7;");
        cout << nRows << " rows deleted" << endl;
        
        /////////////////////////////////////////////////////////////////
        // Transaction Demo
        // The transaction could just as easily have been rolled back
        /////////////////////////////////////////////////////////////////
        int nRowsToCreate(50000);
        cout << endl << "Transaction test, creating " << nRowsToCreate;
        cout << " rows please wait..." << endl;
        tmStart = time(0);
        db->execDML("begin transaction;");
        
        for (i = 0; i < nRowsToCreate; i++)
        {
            char buf[128];
            sprintf(buf, "insert into emp values (%d, 'Empname%06d');", i, i);
            db->execDML(buf);
        }
        
        db->execDML("commit transaction;");
        tmEnd = time(0);
        
        ////////////////////////////////////////////////////////////////
        // Demonstrate CppSQLiteDB::execScalar()
        ////////////////////////////////////////////////////////////////
        cout << db->execScalar("select count(*) from emp;") 
        << " rows in emp table in ";
        cout << tmEnd-tmStart << " seconds (that was fast!)" << endl;
        
        ////////////////////////////////////////////////////////////////
        // Re-create emp table with auto-increment field
        ////////////////////////////////////////////////////////////////
        cout << endl << "Auto increment test" << endl;
        db->execDML("drop table emp;");
        db->execDML(
                   "create table emp(empno integer primary key, empname char(20));");
        cout << nRows << " rows deleted" << endl;
        
        for (i = 0; i < 5; i++)
        {
            char buf[128];
            sprintf(buf, 
                    "insert into emp (empname) values ('Empname%06d');", i+1);
            db->execDML(buf);
            cout << " primary key: " << db->lastRowId() << endl;
        }
        
        ///////////////////////////////////////////////////////////////////
        // Query data and also show results of inserts into auto-increment field
        //////////////////////////////////////////////////////////////////
        cout << endl << "Select statement test" << endl;
        CppSQLite3Query q = db->execQuery("select * from emp order by 1;");
        
        for (fld = 0; fld < q.numFields(); fld++)
        {
            cout << q.fieldName(fld) << "(" << q.fieldDeclType(fld) << ")|";
        }
        cout << endl;
        
        while (!q.eof())
        {
            cout << q.fieldValue(0) << "|";
            cout << q.fieldValue(1) << "|" << endl;
            q.nextRow();
        }
        
        ///////////////////////////////////////////////////////////////
        // SQLite's printf() functionality. Handles embedded quotes and NULLs
        ////////////////////////////////////////////////////////////////
        cout << endl << "SQLite sprintf test" << endl;
        CppSQLite3Buffer bufSQL;
        bufSQL.format("insert into emp (empname) values (%Q);", "He's bad");
        cout << (const char*)bufSQL << endl;
        db->execDML(bufSQL);
//.........这里部分代码省略.........

int CDbMeter::GroupShowCommand(const char* dbfilename, int nGroupKey, GROUPCOMMANDINFO *pGroupCommandinfo)
{
	try
	{
		CppSQLite3DB db;
		db.open(dbfilename);
		CppSQLite3Buffer bufSQL;
		CppSQLite3Table t;
		char szTime[16] = {0,};
		char szTmpTime[5] = {0,};

		if (0 < nGroupKey)
			bufSQL.format("SELECT * FROM command WHERE GroupKey=%d;", nGroupKey);
		else
			bufSQL.format("SELECT * FROM command;");
		t = db.getTable(bufSQL);

		for( int fld = 0; fld < t.numFields(); fld++)
			XDEBUG("%s | ", t.fieldName(fld));
		XDEBUG("\r\n");

		for ( int row = 0; row < t.numRows(); row++)
		{
			t.setRow(row);
			for (int fld=0; fld<t.numFields(); fld++)
			{
				if( !t.fieldIsNull(fld))
				{
					switch(fld)
					{
					case 0:
						pGroupCommandinfo->nCommandKey = atoi( t.fieldValue(fld) );
						break;
					case 1:
						pGroupCommandinfo->nGroupKey = atoi( t.fieldValue(fld) );
						break;
					case 2:
						StrToEUI64( t.fieldValue(fld), &(pGroupCommandinfo->id) );
						break;
					case 3:
						memcpy( pGroupCommandinfo->pGroupName, t.fieldValue(fld), strlen(t.fieldValue(fld)) );
						break;
					case 4:
						pGroupCommandinfo->nCommandState = atoi( t.fieldValue(fld));
						break;
					case 5:
						VARAPI_StringToOid( t.fieldValue(fld), &(pGroupCommandinfo->commandOID) );
						break;
					case 6:	// Create TimeStamp
						memcpy(szTime, t.fieldValue(fld), strlen(t.fieldValue(fld)));
						memcpy(szTmpTime, szTime, 4);	//Year
						pGroupCommandinfo->commandCreateTime.year = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[4]), 2 );	//Month
						pGroupCommandinfo->commandCreateTime.mon = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[6]), 2 );	//Day
						pGroupCommandinfo->commandCreateTime.day = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[8]), 2 );	//Hour
						pGroupCommandinfo->commandCreateTime.hour = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[10]), 2 );	//Min
						pGroupCommandinfo->commandCreateTime.min = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[12]), 2 );	//Sec
						pGroupCommandinfo->commandCreateTime.sec = atoi(szTmpTime);
						break;
					case 7:
						memcpy(szTime, t.fieldValue(fld), strlen(t.fieldValue(fld)));
						memcpy(szTmpTime, szTime, 4);	//Year
						pGroupCommandinfo->commandExecTime.year = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[4]), 2 );	//Month
						pGroupCommandinfo->commandExecTime.mon = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[6]), 2 );	//Day
						pGroupCommandinfo->commandExecTime.day = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[8]), 2 );	//Hour
						pGroupCommandinfo->commandExecTime.hour = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[10]), 2 );	//Min
						pGroupCommandinfo->commandExecTime.min = atoi(szTmpTime);
						memcpy(szTmpTime, &(szTime[12]), 2 );	//Sec
						pGroupCommandinfo->commandExecTime.sec = atoi(szTmpTime);
						break;
					case  8:
						pGroupCommandinfo->nResult = 0;
						break;
					case 9:
						break;
					}
					XDEBUG("%s | ", t.fieldValue(fld));
				}
			}
			XDEBUG("\r\n");
		}

		db.close();
	}
	catch( CppSQLite3Exception& e )
	{
		XDEBUG("%s\r\n",e.errorMessage());
		return e.errorCode();
	}
	return SQLITE_OK;
}