public static SqlTable AddForeignKey(this SqlTable table, string referredTableName, bool isNullable = false, string prefix = null, string fkName = null)
{
var referredTableNameWithSchema = new SchemaAndTableName(referredTableName);
var fk = new ForeignKeyRegistrationToTableWithUniqueKey(table, referredTableNameWithSchema, isNullable, prefix, fkName);
var placeHolderColumnName = $"*{referredTableNameWithSchema}.{table.Columns.Count.ToString("D", CultureInfo.InvariantCulture)}";
table.Columns.Add(new SqlColumnFKRegistration(placeHolderColumnName, fk));
table.Properties.Add(fk);
Prepare(table);
return(table);
}
public static void UniqueKey(DatabaseDefinition definition, SqlTable sqlTable, ForeignKeyRegistrationToTableWithUniqueKey fkRegistration, IForeignKeyNamingStrategy fkNaming)
{
var referredTable = definition.GetTable(fkRegistration.ReferredTableName);
var referredUniqueIndex = GetReferredUniqueIndex(referredTable);
var fk = ReplaceFKRegistrationWithNewFK(sqlTable, fkRegistration, referredTable);
var placeHolderColumn = sqlTable.Columns.OfType <SqlColumnFKRegistration>().FirstOrDefault(c => c.FKRegistration == fkRegistration);
var order = sqlTable.Columns.GetOrder(placeHolderColumn.Name);
sqlTable.Columns.Remove(placeHolderColumn.Name);
foreach (var pkColumn in referredUniqueIndex.SqlColumns.Select(x => x.SqlColumn))
{
var col = new SqlColumn();
pkColumn.CopyTo(col);
col.Table = sqlTable;
col.Types.SetAllNullable(fkRegistration.IsNullable);
col.Name = fkNaming.GetFkToPkColumnName(pkColumn, fkRegistration.NamePrefix);
sqlTable.Columns.Add(col.Name, col, order++);
fk.ForeignKeyColumns.Add(new ForeignKeyColumnMap(col, pkColumn));
}
}
