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/*
* Copyright (C) 2008 - 2010 Murray Cumming <murrayc@murrayc.com>
* Copyright (C) 2008 - 2011 Vivien Malerba <malerba@gnome-db.org>
* Copyright (C) 2009 Bas Driessen <bas.driessen@xobas.com>
* Copyright (C) 2010 David King <davidk@openismus.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <libgda/gda-debug-macros.h>
#include <libgda/sql-parser/gda-statement-struct.h>
#include <libgda/sql-parser/gda-statement-struct-delete.h>
#include <libgda/sql-parser/gda-statement-struct-util.h>
#include <libgda/sql-parser/gda-statement-struct-pspec.h>
#include <string.h>
#include <glib/gi18n-lib.h>
static gpointer gda_sql_statement_delete_new (void);
static void gda_sql_statement_delete_free (gpointer stmt);
static gpointer gda_sql_statement_delete_copy (gpointer src);
static gchar *gda_sql_statement_delete_serialize (gpointer stmt);
static gboolean gda_sql_statement_delete_check_structure (GdaSqlAnyPart *stmt, gpointer data, GError **error);
GdaSqlStatementContentsInfo delete_infos = {
GDA_SQL_STATEMENT_DELETE,
"DELETE",
gda_sql_statement_delete_new,
gda_sql_statement_delete_free,
gda_sql_statement_delete_copy,
gda_sql_statement_delete_serialize,
gda_sql_statement_delete_check_structure,
NULL,
NULL,
NULL,
NULL,
NULL
};
GdaSqlStatementContentsInfo *
_gda_sql_statement_delete_get_infos (void)
{
return &delete_infos;
}
static gpointer
gda_sql_statement_delete_new (void)
{
GdaSqlStatementDelete *stmt;
stmt = g_new0 (GdaSqlStatementDelete, 1);
GDA_SQL_ANY_PART (stmt)->type = GDA_SQL_ANY_STMT_DELETE;
return (gpointer) stmt;
}
static void
gda_sql_statement_delete_free (gpointer stmt)
{
GdaSqlStatementDelete *delete = (GdaSqlStatementDelete *) stmt;
if (delete->table)
gda_sql_table_free (delete->table);
if (delete->cond)
gda_sql_expr_free (delete->cond);
g_free (delete);
}
static gpointer
gda_sql_statement_delete_copy (gpointer src)
{
GdaSqlStatementDelete *dest;
GdaSqlStatementDelete *delete = (GdaSqlStatementDelete *) src;
dest = gda_sql_statement_delete_new ();
dest->table = gda_sql_table_copy (delete->table);
gda_sql_any_part_set_parent (dest->table, dest);
dest->cond = gda_sql_expr_copy (delete->cond);
gda_sql_any_part_set_parent (dest->cond, dest);
return dest;
}
static gchar *
gda_sql_statement_delete_serialize (gpointer stmt)
{
GString *string;
gchar *str;
GdaSqlStatementDelete *delete = (GdaSqlStatementDelete *) stmt;
g_return_val_if_fail (stmt, NULL);
string = g_string_new ("\"contents\":{");
/* table name */
g_string_append (string, "\"table\":");
str = gda_sql_table_serialize (delete->table);
g_string_append (string, str);
g_free (str);
/* condition */
if (delete->cond) {
g_string_append (string, ",\"condition\":");
str = gda_sql_expr_serialize (delete->cond);
g_string_append (string, str);
g_free (str);
}
g_string_append_c (string, '}');
str = string->str;
g_string_free (string, FALSE);
return str;
}
/**
* gda_sql_statement_delete_take_table_name
* @stmt: a #GdaSqlStatement pointer
* @value: a table name as a G_TYPE_STRING #GValue
*
* Sets the name of the table to delete from in @stmt. @value's ownership is transferred to
* @stmt (which means @stmt is then responsible for freeing it when no longer needed).
*/
void
gda_sql_statement_delete_take_table_name (GdaSqlStatement *stmt, GValue *value)
{
GdaSqlStatementDelete *delete = (GdaSqlStatementDelete *) stmt->contents;
if (value) {
delete->table = gda_sql_table_new (GDA_SQL_ANY_PART (stmt));
gda_sql_table_take_name (delete->table, value);
}
}
/**
* gda_sql_statement_delete_take_condition
* @stmt: a #GdaSqlStatement pointer
* @cond: the WHERE condition of the DELETE statement, as a #GdaSqlExpr
*
* Sets the WHERE condition of @stmt. @cond's ownership is transferred to
* @stmt (which means @stmt is then responsible for freeing it when no longer needed).
*/
void
gda_sql_statement_delete_take_condition (GdaSqlStatement *stmt, GdaSqlExpr *cond)
{
GdaSqlStatementDelete *delete = (GdaSqlStatementDelete *) stmt->contents;
delete->cond = cond;
gda_sql_any_part_set_parent (delete->cond, delete);
}
static gboolean
gda_sql_statement_delete_check_structure (GdaSqlAnyPart *stmt, G_GNUC_UNUSED gpointer data, GError **error)
{
GdaSqlStatementDelete *delete = (GdaSqlStatementDelete *) stmt;
if (!delete->table) {
g_set_error (error, GDA_SQL_ERROR, GDA_SQL_STRUCTURE_CONTENTS_ERROR,
"%s", _("DELETE statement needs a table to delete from"));
return FALSE;
}
return TRUE;
}
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