/// <summary>
/// Test CUBRID Isolation Levels
/// </summary>
private static void Test_IsolationLevel()
{
string sqlTablesCount = "select count(*) from db_class";
int tablesCount, newTableCount;
using (CUBRIDConnection conn = new CUBRIDConnection())
{
conn.ConnectionString = TestCases.connString;
conn.Open();
TestCases.ExecuteSQL("drop table if exists isol", conn);
conn.SetIsolationLevel(CUBRIDIsolationLevel.TRAN_REP_READ);
Debug.Assert(conn.GetIsolationLevel() == CUBRIDIsolationLevel.TRAN_REP_READ);
tablesCount = (int)TestCases.GetSingleValue(sqlTablesCount, conn);
TestCases.ExecuteSQL("create table isol(id int)", conn);
newTableCount = (int)TestCases.GetSingleValue(sqlTablesCount, conn);
//Verify table was created
Debug.Assert(newTableCount == tablesCount + 1);
using (CUBRIDConnection connOut = new CUBRIDConnection())
{
connOut.ConnectionString = TestCases.connString;
connOut.Open();
newTableCount = (int)TestCases.GetSingleValue(sqlTablesCount, connOut);
//CREATE TABLE is visible from another connection
Debug.Assert(newTableCount == tablesCount + 1);
}
TestCases.ExecuteSQL("drop table if exists isol", conn);
}
using (CUBRIDConnection conn = new CUBRIDConnection())
{
conn.ConnectionString = TestCases.connString;
conn.Open();
conn.SetIsolationLevel(CUBRIDIsolationLevel.TRAN_REP_CLASS_COMMIT_INSTANCE);
Debug.Assert(conn.GetIsolationLevel() == CUBRIDIsolationLevel.TRAN_REP_CLASS_COMMIT_INSTANCE);
tablesCount = (int)TestCases.GetSingleValue(sqlTablesCount, conn);
conn.BeginTransaction();
TestCases.ExecuteSQL("create table isol(id int)", conn);
newTableCount = (int)TestCases.GetSingleValue(sqlTablesCount, conn);
//Verify table was created
Debug.Assert(newTableCount == tablesCount + 1);
using (CUBRIDConnection connOut = new CUBRIDConnection())
{
connOut.ConnectionString = TestCases.connString;
connOut.Open();
newTableCount = (int)TestCases.GetSingleValue(sqlTablesCount, connOut);
Debug.Assert(newTableCount == tablesCount + 1);
}
conn.Commit();
newTableCount = (int)TestCases.GetSingleValue(sqlTablesCount, conn);
//Verify table was created
Debug.Assert(newTableCount == tablesCount + 1);
TestCases.ExecuteSQL("drop table if exists isol", conn);
newTableCount = (int)TestCases.GetSingleValue(sqlTablesCount, conn);
Debug.Assert(newTableCount == tablesCount);
}
}
