/// <summary>
/// This sub queries the data using the given dbkey.
/// </summary>
/// <param name="DBKeyValue"><see cref=" string"></see> representation of primary key values.</param>
/// <exception cref="RowNotFoundException">Thrown when the row could not be found.</exception>
public void SelectByDBKey(string DBKeyValue)
{
string[] strtemp;
string[] oldtemp;
long i;
if (DBKeyValue.Contains(Table.DAS.KeyDelimiter.ToString()))
{
strtemp = DBKeyValue.Split(Table.DAS.KeyDelimiter);
oldtemp = new string[strtemp.Length];
for (i = 0; i < strtemp.Length; i++)
{
var ColumnValue = new DASColumnValue(this, (DASDataColumn)Table.PrimaryKey[i]);
oldtemp[i] = ColumnValue.GetValueAsString();
ColumnValue.SetValueAsString(strtemp[i]);
}
}
else
{
oldtemp = new string[1];
var ColumnValue = new DASColumnValue(this, (DASDataColumn)Table.PrimaryKey[0]);
oldtemp[0] = ColumnValue.GetValueAsString();
ColumnValue.SetValueAsString(DBKeyValue);
}
if (ExistsInDB())
{
if (RowState != DataRowState.Detached && RowState != DataRowState.Added)
{
AcceptChanges();
}
SelectFromDB();
}
else
{
if (DBKeyValue.Contains("|"))
{
for (i = 0; i < oldtemp.Length; i++)
{
var ColumnValue = new DASColumnValue(this, (DASDataColumn)Table.PrimaryKey[i]);
ColumnValue.SetValueAsString(oldtemp[i]);
}
}
else
{
var ColumnValue = new DASColumnValue(this, (DASDataColumn)Table.PrimaryKey[0]);
ColumnValue.SetValueAsString(oldtemp[0]);
}
throw new RowNotFoundException(DBKeyValue);
}
}
/// <summary>
/// This function deletes the row in the database.
/// </summary>
/// <returns>Number of affected rows.</returns>
/// <exception cref="NotEditableException">Thrown when the table is not editable.</exception>
/// <exception cref="InvalidRowStateException">Thrown when <see cref="DataRow.RowState"></see> is not equal <see cref=" DataRowState.Deleted"></see>.</exception>
public virtual int DeleteFromDB()
{
int ReturnValue;
if (!Table.IsEditable)
{
throw new NotEditableException();
}
if (RowState == DataRowState.Deleted)
{
var tableDAS = Table.DAS;
var stringBuilder = new StringBuilder();
long i = 1;
foreach (DASDataColumn column in Table.PrimaryKey)
{
var ColumnValue = new DASColumnValue(this, column);
switch (column.DASDataType)
{
case DASDataColumn.DASDataTypes.DASDATE:
tableDAS.AddParameter(string.Format("@PK{0}", i), ColumnValue.DBValue, DAS.ParameterModes.PARM_IN, DAS.ServerTypes.DATE);
break;
case DASDataColumn.DASDataTypes.DASDOUBLE:
case DASDataColumn.DASDataTypes.DASLONG:
tableDAS.AddParameter(string.Format("@PK{0}", i), ColumnValue.DBValue, DAS.ParameterModes.PARM_IN, DAS.ServerTypes.NUMBER);
break;
case DASDataColumn.DASDataTypes.DASSTRING:
tableDAS.AddParameter(string.Format("@PK{0}", i), ColumnValue.DBValue, DAS.ParameterModes.PARM_IN, DAS.ServerTypes.STRING);
break;
default:
throw new UnsupportedDataTypeException(column.DASDataType.ToString());
}
i++;
}
try
{
stringBuilder.AppendFormat("DELETE FROM {0}", Table.DBTableName);
i = 1;
foreach (DASDataColumn column in Table.PrimaryKey)
{
if (i == 1)
{
stringBuilder.Append(" WHERE ");
}
else
{
stringBuilder.Append(" AND ");
}
stringBuilder.AppendFormat("{0} = @PK{1}", column.ColumnName, i++);
}
ReturnValue = tableDAS.ExecuteSQL(stringBuilder.ToString());
}
catch (Exception ex)
{
throw new Exception(ex.Message, ex.InnerException);
}
finally
{
for (var k = 1; k <= Table.PrimaryKey.Length; k++)
{
tableDAS.RemoveParameter(string.Format("@PK{0}", k));
}
}
}
else
{
throw new InvalidRowStateException(RowState);
}
if (ReturnValue > 0)
{
AcceptChanges();
}
return(ReturnValue);
}
/// <summary>
/// This function inserts the row into the database.
/// </summary>
/// <returns>Number of rows affected.</returns>
/// <remarks>Columns with property <see cref="DASDataColumn.IsAutoValue"></see> = <c>True</c>
/// must be set to their DASDataColumn.DefaultValue to get the auto value
/// by <see cref="InsertIntoDB"></see>.</remarks>
/// <exception cref="NotEditableException">Thrown when the table is not editable.</exception>
/// <exception cref="UnsupportedDataTypeException">Thrown when an unsupported data type occurs.</exception>
/// <exception cref="InvalidRowStateException">Thrown when <see cref="DataRow.RowState"></see> is not equal <see cref=" DataRowState.Added"></see>.</exception>
public virtual int InsertIntoDB()
{
int ReturnValue;
if (!(Table.DBTableName.Length > 0))
{
throw new NotInsertableException();
}
if (RowState != DataRowState.Added)
{
throw new InvalidRowStateException(RowState);
}
var stringBuilder = new StringBuilder();
var First = true;
var TableDAS = Table.DAS;
//check for autovalue columns
foreach (DASDataColumn column in Table.Columns)
{
if (!column.IsAutoValue)
{
continue;
}
var curReadOnly = column.ReadOnly;
column.ReadOnly = false;
var ColumnValue = new DASColumnValue(this, column);
if (ColumnValue.Value == column.DefaultValue)
{
ColumnValue.Value = TableDAS.GetAutoValue(column.AutoValueCreator);
}
column.ReadOnly = curReadOnly;
}
//Build SQL statement
stringBuilder.AppendFormat("INSERT INTO {0} (", Table.DBTableName);
foreach (DASDataColumn column in Table.Columns)
{
if (First)
{
First = false;
}
else
{
stringBuilder.Append(", ");
}
stringBuilder.Append(column.DBColumnName);
}
stringBuilder.Append(") VALUES (");
for (long k = 1; k <= Table.Columns.Count(); k++)
{
if (k > 1)
{
stringBuilder.Append(", ");
}
stringBuilder.AppendFormat("@P{0}", k);
}
stringBuilder.Append(")");
//Create Parameters
long i = 1;
foreach (DASDataColumn column in Table.Columns)
{
var ColumnValue = new DASColumnValue(this, column);
switch (column.DASDataType)
{
case DASDataColumn.DASDataTypes.DASDATE:
TableDAS.AddParameter(string.Format("@P{0}", i), ColumnValue.Value, DAS.ParameterModes.PARM_IN,
DAS.ServerTypes.DATE);
break;
case DASDataColumn.DASDataTypes.DASDOUBLE:
case DASDataColumn.DASDataTypes.DASLONG:
TableDAS.AddParameter(string.Format("@P{0}", i), ColumnValue.Value, DAS.ParameterModes.PARM_IN,
DAS.ServerTypes.NUMBER);
break;
case DASDataColumn.DASDataTypes.DASSTRING:
TableDAS.AddParameter(string.Format("@P{0}", i), ColumnValue.Value, DAS.ParameterModes.PARM_IN,
DAS.ServerTypes.STRING);
break;
default:
throw new UnsupportedDataTypeException(column.DASDataType.ToString());
}
i++;
}
try
{
ReturnValue = Table.DAS.ExecuteSQL(stringBuilder.ToString());
}
catch (Exception ex)
{
throw new Exception(ex.Message, ex.InnerException);
}
finally
{
//Remove Parameters
for (long k = 1; k <= Table.Columns.Count(); k++)
{
TableDAS.RemoveParameter(string.Format("@P{0}", k));
}
}
if (ReturnValue > 0)
{
AcceptChanges();
SelectFromDB();
}
return(ReturnValue);
}
