/// <summary>
/// Removes all data from all Backsight tables. This is done when a new environment
/// is being imported. You will probably need to bracket this call with calls
/// to <see cref="EnableForeignKeys"/> (disable foreign key constraints, then
/// remove, then import, then re-enable constraints).
/// </summary>
/// <param name="db">The data server containing the tables</param>
public void RemoveAll(IDataServer db)
{
BacksightDataSet ds = new BacksightDataSet();
foreach (DataTable dt in ds.Tables)
{
// Assume the "ced" schema, since I don't see any DataTable.SchemaName property.
string tableName = GetTableName(dt);
string sql = String.Format("DELETE FROM [ced].[{0}]", tableName);
db.ExecuteNonQuery(sql);
}
/*
* using (IConnection ic = ConnectionFactory.GetConnection())
* {
* SqlConnection c = ic.Value;
*
* foreach (DataTable dt in ds.Tables)
* {
* // Assume the "ced" schema, since I don't see any DataTable.SchemaName property.
* string tableName = GetTableName(dt);
* string sql = String.Format("DELETE FROM [ced].[{0}]", tableName);
* SqlCommand cmd = new SqlCommand(sql, c);
* cmd.ExecuteNonQuery();
* }
* }
*/
}
/// <summary>
/// Enable or disable foreign key constraints for Backsight system tables.
/// </summary>
/// <param name="ds">The database containing the tables.</param>
/// <param name="enable">Specify <c>false</c> to enable constraints, <c>true</c>
/// to re-enable.</param>
public void EnableForeignKeys(IDataServer ds, bool enable)
{
// Do it the heavy-handed way, since I'm still getting foreign key errors
// after setting ForeignKey.IsEnabled to false.
/*
* if (enable)
* AddForeignKeyConstraints(null);
* else
* DropForeignKeyConstraints();
*/
/*
* BacksightDataSet ds = new BacksightDataSet();
*
* foreach (DataTable dt in ds.Tables)
* {
* Smo.Table t = m_Database.Tables[dt.TableName];
* if (t!=null)
* {
* foreach (Smo.ForeignKey fk in t.ForeignKeys)
* fk.IsEnabled = enable;
* }
* }
*/
string[] tables = GetCedTableNames();
string checkClause = (enable ? "CHECK" : "NOCHECK");
foreach (string tableName in tables)
{
string sql = String.Format("ALTER TABLE [ced].[{0}] {1} CONSTRAINT ALL", tableName, checkClause);
ds.ExecuteNonQuery(sql);
}
/*
* using (IConnection ic = ConnectionFactory.GetConnection())
* {
* SqlConnection c = ic.Value;
*
* foreach (string tableName in tables)
* {
* string sql = String.Format("ALTER TABLE [ced].[{0}] {1} CONSTRAINT ALL", tableName, checkClause);
* SqlCommand cmd = new SqlCommand(sql, c);
* cmd.ExecuteNonQuery();
* }
* }
*/
}
