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/* mg-join.h
*
* Copyright (C) 2003 Vivien Malerba
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#ifndef __MG_JOIN_H_
#define __MG_JOIN_H_
#include "mg-base.h"
#include "mg-defs.h"
#include <libgda/libgda.h>
G_BEGIN_DECLS
#define MG_JOIN_TYPE (mg_join_get_type())
#define MG_JOIN(obj) G_TYPE_CHECK_INSTANCE_CAST (obj, mg_join_get_type(), MgJoin)
#define MG_JOIN_CLASS(klass) G_TYPE_CHECK_CLASS_CAST (klass, mg_join_get_type (), MgJoinClass)
#define IS_MG_JOIN(obj) G_TYPE_CHECK_INSTANCE_TYPE (obj, mg_join_get_type ())
/* Interfaces:
* MgXmlStorage
* MgRerefer
*/
/* error reporting */
extern GQuark mg_join_error_quark (void);
#define MG_JOIN_ERROR mg_join_error_quark ()
/* different possible types for a query */
typedef enum {
MG_JOIN_TYPE_INNER,
MG_JOIN_TYPE_LEFT_OUTER,
MG_JOIN_TYPE_RIGHT_OUTER,
MG_JOIN_TYPE_FULL_OUTER,
MG_JOIN_TYPE_CROSS,
MG_JOIN_TYPE_LAST
} MgJoinType;
enum
{
MG_JOIN_XML_LOAD_ERROR,
MG_JOIN_META_DATA_UPDATE,
MG_JOIN_FIELDS_ERROR
};
/* struct for the object's data */
struct _MgJoin
{
MgBase object;
MgJoinPrivate *priv;
};
/* struct for the object's class */
struct _MgJoinClass
{
MgBaseClass class;
/* signals */
void (*type_changed) (MgJoin *join);
void (*condition_changed) (MgJoin *join);
};
guint mg_join_get_type (void);
GObject *mg_join_new_with_targets (MgQuery *query, MgTarget *target_1, MgTarget *target_2);
GObject *mg_join_new_with_xml_ids (MgQuery *query, const gchar *target_1_xml_id, const gchar *target_2_xml_id);
GObject *mg_join_new_copy (MgJoin *orig, GHashTable *replacements);
void mg_join_set_join_type (MgJoin *join, MgJoinType type);
MgJoinType mg_join_get_join_type (MgJoin *join);
MgQuery *mg_join_get_query (MgJoin *join);
MgTarget *mg_join_get_target_1 (MgJoin *join);
MgTarget *mg_join_get_target_2 (MgJoin *join);
void mg_join_swap_targets (MgJoin *join);
gboolean mg_join_set_condition (MgJoin *join, MgCondition *cond);
MgCondition *mg_join_get_condition (MgJoin *join);
const gchar *mg_join_render_type (MgJoin *join);
G_END_DECLS
#endif
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