//View Data
public DB2DataReader ExecDataView(String sql)
{
if (this.ConnectDatabase() == true)
{
Cmd = new DB2Command(sql, Conn);
Resultset = Cmd.ExecuteReader();
}
return Resultset;
}
public static string GetDBValueStr(DB2DataReader reader, string columnName, string defaultValue = "")
{
if (reader[columnName] == DBNull.Value)
{
return defaultValue;
}
else
{
string value = string.Empty;
value = reader[columnName].ToString();
return value;
}
}
public static int GetDBValueInt(DB2DataReader reader, string columnName, int defaultValue = -1)
{
if (reader[columnName] == DBNull.Value)
{
return defaultValue;
}
else
{
string value = string.Empty;
value = reader[columnName].ToString();
return Convert.ToInt32(value);
}
}
public static DateTime GetDBValueDateTime(DB2DataReader reader, string columnName, string defaultValue = "0000-01-01")
{
if (reader[columnName] == DBNull.Value)
{
return Convert.ToDateTime(defaultValue);
}
else
{
string value = string.Empty;
value = reader[columnName].ToString();
return Convert.ToDateTime(value);
}
}
private DataTable GetSchema()
{
dataAdapter.SelectCommand.Connection.Open();
DB2Command cmd = new DB2Command(dataAdapter.SelectCommand.CommandText, dataAdapter.SelectCommand.Connection);
DB2DataReader fake = cmd.ExecuteReader(CommandBehavior.KeyInfo);
DataTable dt = fake.GetSchemaTable();
fake.Close();
dataAdapter.SelectCommand.Connection.Close();
return(dt);
}
///
/// ExecuteScalar
///
public object ExecuteScalar()
{
if ((db2Conn == null) || (db2Conn.State != ConnectionState.Open))
{
throw new InvalidOperationException("Prepare needs an open connection");
}
using (DB2DataReader reader = ExecuteReader(CommandBehavior.SingleResult | CommandBehavior.SingleRow))
{
if (reader.Read() && (reader.FieldCount > 0))
{
return(reader[0]);
}
}
return(null);
}
public DB2DataReader ExecuteReader(CommandBehavior behavior)
{
if ((db2Conn == null) || (db2Conn.State != ConnectionState.Open))
{
throw new InvalidOperationException("Prepare needs an open connection");
}
DB2DataReader reader;
ExecuteNonQueryInternal(behavior);
reader = new DB2DataReader(db2Conn, this, behavior);
refDataReader = new WeakReference(reader);
return(reader);
}
internal void ConnectionClosed()
{
DB2DataReader reader = null;
if ((refDataReader != null) && refDataReader.IsAlive)
{
reader = (DB2DataReader)refDataReader.Target;
}
if ((reader != null) && refDataReader.IsAlive)
{
reader.Dispose();
refDataReader = null;
}
CloseStatementHandle(true);
db2Trans = null;
}
public static bool GetDBValueBool(DB2DataReader reader, string columnName, bool defaultValue = false)
{
if (reader[columnName] == DBNull.Value)
{
return defaultValue;
}
else
{
string value = string.Empty;
value = reader[columnName].ToString();
string[] yesParas = { "1", "Y" };
if (yesParas.Contains(value))
{
return true;
}
else
{
return false;
}
}
}
public DB2DataReader ExecuteReader(CommandBehavior behavior)
{
if((db2Conn == null) || (db2Conn.State != ConnectionState.Open))
throw new InvalidOperationException("Prepare needs an open connection");
DB2DataReader reader;
ExecuteNonQueryInternal(behavior);
reader = new DB2DataReader(db2Conn, this, behavior);
refDataReader = new WeakReference(reader);
return reader;
}
protected internal DB2SpatialExtenderFeatureDataReader(
IGeometryFactory geomFactory, DB2DataReader internalReader,
string geometryColumn, string oidColumn) :
base(geomFactory, internalReader, geometryColumn, oidColumn)
{
}
