private void RenameColumn(Table table, Column column, string renameFrom, Queue<SchemaItem> callbackQueue)
{
log("Renaming Column: " + renameFrom + " -> " + column.Name);
ExecuteNonQuery("EXEC sp_rename @p1, @p2, 'COLUMN';",
table.Name + "." + renameFrom,
column.Name);
}
private void CreateColumn(Table table, Column column, Queue<SchemaItem> callbackQueue)
{
log("Creating Column: " + column.Name);
RunCallback(column, CallbackAction.Before);
callbackQueue.Enqueue(column);
string typeDesc = GetColumnDescriptor(column);
string query = string.Format("ALTER TABLE [{0}] ADD [{1}] {2}", table.Name, column.Name, typeDesc);
ExecuteNonQuery(query);
}
private void CreateForeignKey(Table table, Column column)
{
string keyname = string.Format("FK_{0}_{1}_{2}", table.Name, column.Name, column.References);
List<string> fkeys = existingForeignKeys.GetValueOrDefault(table.Name.Trim());
if (Exists(fkeys, keyname))
return;
log("Creating Foreign Key: " + keyname);
existingForeignKeys.GetValue(table.Name, () => new List<string>()).Add(keyname);
finalUpdates.Add(string.Format("ALTER TABLE [{0}] ADD CONSTRAINT [FK_{0}_{1}_{2}] FOREIGN KEY ([{1}]) REFERENCES [{2}];", table.Name, column.Name, column.References));
}
private static string GetColumnDescriptor(Column column)
{
string typeDesc = GetTypeDescriptor(column);
if (!column.Nullable)
typeDesc += " NOT NULL";
if (!string.IsNullOrEmpty(column.DefaultValue))
typeDesc += " DEFAULT (" + column.DefaultValue + ")";
bool identity;
if (Boolean.TryParse(column.IsIdentity, out identity) && identity)
typeDesc += " IDENTITY";
return typeDesc;
}
