private void ParseFKInfo(DataRow keyData)
{
Name = keyData["CONSTRAINT_NAME"].ToString();
ReferencedTable = keyData["REFERENCED_TABLE_NAME"].ToString();
if (keyData["MATCH_OPTION"] != DBNull.Value)
{
Match = (MatchOption)Enum.Parse(typeof(MatchOption), keyData["MATCH_OPTION"].ToString(), true);
}
if (keyData["UPDATE_RULE"] != DBNull.Value)
{
UpdateAction = GetActionForSql(keyData["UPDATE_RULE"].ToString());
}
if (keyData["DELETE_RULE"] != DBNull.Value)
{
DeleteAction = GetActionForSql(keyData["DELETE_RULE"].ToString());
}
string[] restrictions = new string[4] {
null, Table.OwningNode.Database, Table.Name, Name
};
DataTable cols = Table.OwningNode.GetSchema("Foreign Key Columns", restrictions);
foreach (DataRow row in cols.Rows)
{
FKColumnPair colPair = new FKColumnPair();
colPair.Column = row["COLUMN_NAME"].ToString();
colPair.ReferencedColumn = row["REFERENCED_COLUMN_NAME"].ToString();
Columns.Add(colPair);
}
}
bool ITablePart.HasChanges()
{
if (!ObjectHelper.AreEqual(this, oldFk))
{
return(true);
}
if (Columns.Count != oldFk.Columns.Count)
{
return(true);
}
foreach (FKColumnPair fc in Columns)
{
int i = 0;
for (; i < oldFk.Columns.Count; i++)
{
FKColumnPair ofc = oldFk.Columns[i];
if (ofc.ReferencedColumn == fc.ReferencedColumn &&
ofc.Column == fc.Column)
{
break;
}
}
if (i == oldFk.Columns.Count)
{
return(true);
}
}
return(false);
}
private void ParseFKInfo(DataRow keyData)
{
Name = keyData["CONSTRAINT_NAME"].ToString();
ReferencedTable = keyData["REFERENCED_TABLE_NAME"].ToString();
if (keyData["MATCH_OPTION"] != DBNull.Value)
Match = (MatchOption)Enum.Parse(typeof(MatchOption), keyData["MATCH_OPTION"].ToString(), true);
if (keyData["UPDATE_RULE"] != DBNull.Value)
UpdateAction = GetActionForSql(keyData["UPDATE_RULE"].ToString());
if (keyData["DELETE_RULE"] != DBNull.Value)
DeleteAction = GetActionForSql(keyData["DELETE_RULE"].ToString());
string[] restrictions = new string[4] { null, Table.OwningNode.Database, Table.Name, Name };
DataTable cols = Table.OwningNode.GetSchema("Foreign Key Columns", restrictions);
foreach (DataRow row in cols.Rows)
{
FKColumnPair colPair = new FKColumnPair();
colPair.Column = row["COLUMN_NAME"].ToString();
colPair.ReferencedColumn = row["REFERENCED_COLUMN_NAME"].ToString();
Columns.Add(colPair);
}
}
void ITablePart.Saved()
{
if (oldFk == null)
{
oldFk = new ForeignKey(Table);
}
// copy over the top level properties
oldFk.DeleteAction = DeleteAction;
oldFk.Match = Match;
oldFk.Name = Name;
oldFk.ReferencedTable = ReferencedTable;
oldFk.Table = Table;
oldFk.UpdateAction = UpdateAction;
// now we need to copy the columns
oldFk.Columns.Clear();
foreach (FKColumnPair fc in Columns)
{
FKColumnPair old = new FKColumnPair();
old.ReferencedColumn = fc.ReferencedColumn;
old.Column = fc.Column;
oldFk.Columns.Add(old);
}
}
void ITablePart.Saved()
{
if (oldFk == null)
oldFk = new ForeignKey(Table);
// copy over the top level properties
oldFk.DeleteAction = DeleteAction;
oldFk.Match = Match;
oldFk.Name = Name;
oldFk.ReferencedTable = ReferencedTable;
oldFk.Table = Table;
oldFk.UpdateAction = UpdateAction;
// now we need to copy the columns
oldFk.Columns.Clear();
foreach (FKColumnPair fc in Columns)
{
FKColumnPair old = new FKColumnPair();
old.ReferencedColumn = fc.ReferencedColumn;
old.Column = fc.Column;
oldFk.Columns.Add(old);
}
}
private void columnGrid_CellValuePushed(object sender, DataGridViewCellValueEventArgs e)
{
if (columnGrid.Rows[e.RowIndex].IsNewRow)
return;
FKColumnPair fk;
if ((e.RowIndex == columnGrid.Rows.Count - 1) && (columnGrid.Rows.Count > fkColumnsBindingSource.Count))
{
fk = new FKColumnPair() { Column = "", ReferencedColumn = "" };
fkColumnsBindingSource.Add(fk);
}
else
{
fk = (fkColumnsBindingSource[e.RowIndex] as FKColumnPair);
}
switch (e.ColumnIndex)
{
case 0:
fk.Column = (string)e.Value == None ? null : (string)e.Value;
break;
case 1:
fk.ReferencedColumn = (string)e.Value == None ? null : (string)e.Value;
break;
}
}
