/* GDA Common Library
 * Copyright (C) 1998 - 2005 The GNOME Foundation.
 *
 * Authors:
 *	Juan-Mariano de Goyeneche <jmseyas@dit.upm.es>
 *      Daniel Espinosa Ortiz <esodan@gmail.com> (GdaBlob based on GObject)
 *      Vivien Malerba <malerba@gnome-db.org>
 *
 * This Library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this Library; see the file COPYING.LIB.  If not,
 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#if !defined(__gda_blob_h__)
#  define __gda_blob_h__

#include <glib.h>
#include <glib-object.h>

G_BEGIN_DECLS

typedef enum {
	GDA_BLOB_MODE_READ = 1,
	GDA_BLOB_MODE_WRITE = 1 << 1,
	GDA_BLOB_MODE_RDWR = 0x03 
} GdaBlobMode;

#define GDA_TYPE_BLOB            (gda_blob_get_type())
#define GDA_BLOB(obj)            (G_TYPE_CHECK_INSTANCE_CAST (obj, GDA_TYPE_BLOB, GdaBlob))
#define GDA_BLOB_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST (klass, GDA_TYPE_BLOB, GdaBlobClass))
#define GDA_IS_BLOB(obj)         (G_TYPE_CHECK_INSTANCE_TYPE(obj, GDA_TYPE_BLOB))
#define GDA_IS_BLOB_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GDA_TYPE_BLOB))

typedef struct _GdaBlob GdaBlob;
struct _GdaBlob {
	GObject object;
};

typedef struct _GdaBlobClass GdaBlobClass;
struct _GdaBlobClass {
	GObjectClass parent_class;

	/* Virtual methods */
	gint   (* open)      (GdaBlob *blob, GdaBlobMode mode);
	gint   (* read)      (GdaBlob *blob, gpointer buf, gint size,
			      gint *bytes_read);
	gint   (* write)     (GdaBlob *blob, gpointer buf, gint size,
			      gint *bytes_written);
	gint   (* lseek)     (GdaBlob *blob, gint offset, gint whence);
	gint   (* close)     (GdaBlob *blob);
	gint   (* remove)    (GdaBlob *blob);
	gchar *(* get_sql_id)(GdaBlob *blob);
};

GType    gda_blob_get_type  (void);

gint     gda_blob_open      (GdaBlob *blob, GdaBlobMode mode);
gint     gda_blob_read      (GdaBlob *blob, gpointer buf, gint size, gint *bytes_read);
gint     gda_blob_write     (GdaBlob *blob, gpointer buf, gint size, gint *bytes_written);
gint     gda_blob_lseek     (GdaBlob *blob, gint offset, gint whence);
gint     gda_blob_close     (GdaBlob *blob);
gint     gda_blob_remove    (GdaBlob *blob);
gchar   *gda_blob_get_sql_id(GdaBlob *blob);

G_END_DECLS

#endif