/*
 * Copyright (C) 2012 - Juan Ferrer Toribio
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "sql-delete.h"

/**
 * SECTION: sql-delete
 * @Short_description: the equivalent of the DELETE statement in SQL.
 * @Title: SqlDelete
 * 
 * The #SqlDelete represents a deletion statement.
 **/
G_DEFINE_TYPE (SqlDelete, sql_delete, SQL_TYPE_DML);

SqlDelete * sql_delete_new ()
{
	return g_object_new (SQL_TYPE_DELETE, NULL);
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private

static void sql_delete_render (SqlDelete * obj, SqlRender * render)
{
	sql_render_add_token (render, "DELETE");
	sql_render_add_object (render, obj->table);
	
	if (SQL_DML (obj)->target)
	{
		sql_render_add_list (render, T, "FROM", SQL_DML (obj)->target, ",");
		sql_render_add_item (render, F, "WHERE", SQL_DML (obj)->where);
	}
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Public

void sql_delete_add_table (SqlDelete * obj, SqlTable * table)
{
	g_return_if_fail (SQL_IS_DELETE (obj));
	g_return_if_fail (SQL_IS_TABLE (table));
	
	obj->table = g_slist_append (obj->table, g_object_ref_sink (table));
}

//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class

static void sql_delete_init (SqlDelete * obj)
{	
	obj->table = NULL;
}

static void sql_delete_finalize (SqlDelete * obj)
{
	g_slist_free_full (obj->table, g_object_unref);
	G_OBJECT_CLASS (sql_delete_parent_class)->finalize (G_OBJECT (obj));
}

static void sql_delete_class_init (SqlDeleteClass * klass)
{
	G_OBJECT_CLASS (klass)->finalize = (GObjectFinalizeFunc) sql_delete_finalize;
	SQL_OBJECT_CLASS (klass)->render = (SqlRenderFunc) sql_delete_render;
}