static public short Initialize(ref IntPtr pEnvHandle)
{
string OSVersion = Environment.OSVersion.ToString();
useLibCli = true;
if (OSVersion.Substring(0, 4) == "Unix")
{
useLibCli = false;
}
return(DB2CLIWrapper.SQLAllocHandle(DB2Constants.SQL_HANDLE_ENV, IntPtr.Zero, out pEnvHandle));
}
private void InternalOpen(string connnectionString, DB2Connection connection)
{
try
{
DB2Constants.RetCode sqlRet = (DB2Constants.RetCode)DB2CLIWrapper.SQLAllocHandle(DB2Constants.SQL_HANDLE_DBC, DB2Environment.Instance.PenvHandle, out dbHandle);
DB2ClientUtils.DB2CheckReturn(sqlRet, DB2Constants.SQL_HANDLE_DBC, DB2Environment.Instance.PenvHandle, "Unable to allocate database handle in DB2Connection.", connection);
StringBuilder outConnectStr = new StringBuilder(DB2Constants.SQL_MAX_OPTION_STRING_LENGTH);
short numOutCharsReturned;
sqlRet = (DB2Constants.RetCode)DB2CLIWrapper.SQLDriverConnect(dbHandle, IntPtr.Zero,
connnectionString, DB2Constants.SQL_NTS,
outConnectStr, DB2Constants.SQL_MAX_OPTION_STRING_LENGTH, out numOutCharsReturned,
DB2Constants.SQL_DRIVER_NOPROMPT);
DB2ClientUtils.DB2CheckReturn(sqlRet, DB2Constants.SQL_HANDLE_DBC, dbHandle, "Unable to connect to the database.", connection);
databaseProductName = SQLGetInfo(dbHandle, DB2Constants.SQL_DBMS_NAME);
databaseVersion = SQLGetInfo(dbHandle, DB2Constants.SQL_DBMS_VER);
/* Set the attribute SQL_ATTR_XML_DECLARATION to skip the XML declaration from XML Data */
sqlRet = (DB2Constants.RetCode)DB2CLIWrapper.SQLSetConnectAttr(dbHandle, DB2Constants.SQL_ATTR_XML_DECLARATION, new IntPtr(DB2Constants.SQL_XML_DECLARATION_NONE), DB2Constants.SQL_NTS);
DB2ClientUtils.DB2CheckReturn(sqlRet, DB2Constants.SQL_HANDLE_DBC, dbHandle, "Unable to set SQL_ATTR_XML_DECLARATION", connection);
connection.NativeOpenPerformed = true;
if ((settings.Pool == null) || (settings.Pool.databaseProductName == null))
{
settings.Pool.databaseProductName = databaseProductName;
settings.Pool.databaseVersion = databaseVersion;
}
else if (settings.Pool != null)
{
if (settings.Pool != null)
{
databaseProductName = settings.Pool.databaseProductName;
databaseVersion = settings.Pool.databaseVersion;
}
}
}
catch
{
if (dbHandle != IntPtr.Zero)
{
DB2CLIWrapper.SQLFreeHandle(DB2Constants.SQL_HANDLE_DBC, dbHandle);
dbHandle = IntPtr.Zero;
}
throw;
}
}
internal void AllocateStatement(string location)
{
if (db2Conn.DBHandle.ToInt32() == 0)
{
return;
}
DB2Constants.RetCode sqlRet;
sqlRet = (DB2Constants.RetCode)DB2CLIWrapper.SQLAllocHandle(DB2Constants.SQL_HANDLE_STMT, db2Conn.DBHandle, out hwndStmt);
if ((sqlRet != DB2Constants.RetCode.SQL_SUCCESS) && (sqlRet != DB2Constants.RetCode.SQL_SUCCESS_WITH_INFO))
{
throw new DB2Exception(DB2Constants.SQL_HANDLE_DBC, db2Conn.DBHandle, location + ": Unable to allocate statement handle.");
}
parameters.HwndStmt = hwndStmt;
SetStatementTimeout();
}
public DB2OpenConnection(DB2ConnectionSettings settings, DB2Connection connection)
{
this.settings = settings;
try
{
short sqlRet = DB2CLIWrapper.SQLAllocHandle(DB2Constants.SQL_HANDLE_DBC, DB2Environment.Instance.penvHandle, out dbHandle);
DB2ClientUtils.DB2CheckReturn(sqlRet, DB2Constants.SQL_HANDLE_DBC, DB2Environment.Instance.penvHandle, "Unable to allocate database handle in DB2Connection.", connection);
if (settings.Server.Length > 0)
{
StringBuilder outConnectStr = new StringBuilder(60); // TODO: ????
short numOutCharsReturned;
sqlRet = DB2CLIWrapper.SQLDriverConnect(dbHandle, IntPtr.Zero,
settings.ConnectionString, (short)settings.ConnectionString.Length,
outConnectStr, (short)outConnectStr.Length, out numOutCharsReturned,
DB2Constants.SQL_DRIVER_NOPROMPT /*SQL_DRIVER_COMPLETE*/);
}
else
{
sqlRet = DB2CLIWrapper.SQLConnect(dbHandle,
settings.DatabaseAlias, (short)settings.DatabaseAlias.Length,
settings.UserName, (short)settings.UserName.Length,
settings.PassWord, (short)settings.PassWord.Length);
DB2ClientUtils.DB2CheckReturn(sqlRet, DB2Constants.SQL_HANDLE_DBC, dbHandle, "Unable to connect to the database.", connection);
}
if ((settings.Pool == null) || (settings.Pool.databaseProductName == null))
{
StringBuilder sb = new StringBuilder(256);
short stringLength;
sqlRet = DB2CLIWrapper.SQLGetInfo(dbHandle, /*SQL_DBMS_NAME*/ 17, sb, (short)(sb.Capacity / 2), out stringLength);
new DB2ErrorCollection(DB2Constants.SQL_HANDLE_DBC, dbHandle).ToString();
if (sqlRet == 0)
{
databaseProductName = sb.ToString(0, Math.Min(sb.Capacity, stringLength / 2));
}
sqlRet = DB2CLIWrapper.SQLGetInfo(dbHandle, /*SQL_DBMS_VER*/ 18, sb, (short)(sb.Capacity / 2), out stringLength);
if (sqlRet == 0)
{
databaseVersion = sb.ToString(0, Math.Min(sb.Capacity, stringLength / 2));
try
{
string[] splitVersion = databaseVersion.Split('.');
majorVersion = int.Parse(splitVersion[0]);
minorVersion = int.Parse(splitVersion[1]);
}
catch {}
}
if (settings.Pool != null)
{
settings.Pool.databaseProductName = databaseProductName;
settings.Pool.databaseVersion = databaseVersion;
settings.Pool.majorVersion = majorVersion;
settings.Pool.minorVersion = minorVersion;
}
}
else if (settings.Pool != null)
{
if (settings.Pool != null)
{
databaseProductName = settings.Pool.databaseProductName;
databaseVersion = settings.Pool.databaseVersion;
majorVersion = settings.Pool.majorVersion;
minorVersion = settings.Pool.minorVersion;
}
}
}
catch
{
if (dbHandle != IntPtr.Zero)
{
DB2CLIWrapper.SQLFreeHandle(DB2Constants.SQL_HANDLE_DBC, dbHandle);
dbHandle = IntPtr.Zero;
}
throw;
}
}
