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/*
* Copyright (C) 2007 - 2011 Vivien Malerba <malerba@gnome-db.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <libgda/libgda.h>
#include <sql-parser/gda-sql-parser.h>
GdaConnection *open_connection (void);
void display_products_contents (GdaConnection *cnc);
void create_table (GdaConnection *cnc);
int
main (int argc, char *argv[])
{
gda_init ();
GdaConnection *cnc;
/* open connections */
cnc = open_connection ();
create_table (cnc);
display_products_contents (cnc);
gda_connection_close (cnc);
return 0;
}
/*
* Open a connection to the example.db file
*/
GdaConnection *
open_connection (void)
{
GdaConnection *cnc;
GError *error = NULL;
cnc = gda_connection_open_from_string ("SQLite", "DB_DIR=.;DB_NAME=ddl_db", NULL,
GDA_CONNECTION_OPTIONS_NONE,
&error);
if (!cnc) {
g_print ("Could not open connection to SQLite database in example_db.db file: %s\n",
error && error->message ? error->message : "No detail");
exit (1);
}
return cnc;
}
/*
* Create a "products" table using a GdaServerOperation object
*/
void
create_table (GdaConnection *cnc)
{
GError *error = NULL;
GdaServerProvider *provider;
GdaServerOperation *op;
gchar *sql;
gint i;
/* create a new GdaServerOperation object */
provider = gda_connection_get_provider (cnc);
op = gda_server_provider_create_operation (provider, cnc, GDA_SERVER_OPERATION_CREATE_TABLE, NULL, &error);
if (!op) {
g_print ("CREATE TABLE operation is not supported by the provider: %s\n",
error && error->message ? error->message : "No detail");
exit (1);
}
/* Set parameter's values */
/* table name */
if (!gda_server_operation_set_value_at (op, "products", &error, "/TABLE_DEF_P/TABLE_NAME")) goto on_set_error;
/* "id' field */
i = 0;
if (!gda_server_operation_set_value_at (op, "id", &error, "/FIELDS_A/@COLUMN_NAME/%d", i)) goto on_set_error;
if (!gda_server_operation_set_value_at (op, "integer", &error, "/FIELDS_A/@COLUMN_TYPE/%d", i)) goto on_set_error;
if (!gda_server_operation_set_value_at (op, "TRUE", &error, "/FIELDS_A/@COLUMN_AUTOINC/%d", i)) goto on_set_error;
if (!gda_server_operation_set_value_at (op, "TRUE", &error, "/FIELDS_A/@COLUMN_PKEY/%d", i)) goto on_set_error;
/* 'product_name' field */
i++;
if (!gda_server_operation_set_value_at (op, "product_name", &error, "/FIELDS_A/@COLUMN_NAME/%d", i)) goto on_set_error;
if (!gda_server_operation_set_value_at (op, "varchar", &error, "/FIELDS_A/@COLUMN_TYPE/%d", i)) goto on_set_error;
if (!gda_server_operation_set_value_at (op, "50", &error, "/FIELDS_A/@COLUMN_SIZE/%d", i)) goto on_set_error;
if (!gda_server_operation_set_value_at (op, "TRUE", &error, "/FIELDS_A/@COLUMN_NNUL/%d", i)) goto on_set_error;
/* Show the SQL to execute
* This does not always work since some operations may not be accessible through SQL
*/
sql = gda_server_provider_render_operation (provider, cnc, op, &error);
if (!sql) {
g_print ("Error rendering SQL: %s\n",
error && error->message ? error->message : "No detail");
exit (1);
}
g_print ("SQL to execute: %s\n", sql);
g_free (sql);
/* Actually execute the operation */
if (! gda_server_provider_perform_operation (provider, cnc, op, &error)) {
g_print ("Error executing the operation: %s\n",
error && error->message ? error->message : "No detail");
exit (1);
}
g_object_unref (op);
return;
on_set_error:
g_print ("Error setting value in GdaSererOperation: %s\n",
error && error->message ? error->message : "No detail");
exit (1);
}
/*
* display the contents of the 'products' table
*/
void
display_products_contents (GdaConnection *cnc)
{
GdaDataModel *data_model;
GdaStatement *stmt;
gchar *sql = "SELECT * FROM products";
GError *error = NULL;
GdaSqlParser *parser;
parser = gda_connection_create_parser (cnc);
if (!parser) /* @cnc does not provide its own parser => use default one */
parser = gda_sql_parser_new ();
stmt = gda_sql_parser_parse_string (parser, sql, NULL, NULL);
data_model = gda_connection_statement_execute_select (cnc, stmt, NULL, &error);
g_object_unref (stmt);
if (!data_model)
g_error ("Could not get the contents of the 'products' table: %s\n",
error && error->message ? error->message : "No detail");
gda_data_model_dump (data_model, stdout);
g_object_unref (data_model);
}
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