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#include <libgda/libgda.h>
#include <virtual/libgda-virtual.h>
#include <sql-parser/gda-sql-parser.h>
#include <stdlib.h>
#include <string.h>
static GdaDataModel *run_sql_select (GdaConnection *cnc, const gchar *sql);
static gboolean run_sql_non_select (GdaConnection *cnc, const gchar *sql);
int
main (int argc, char **argv)
{
GError *error = NULL;
GdaConnection *cnc;
GdaVirtualProvider *provider;
GdaDataModel *rw_model;
gchar *file;
/* set up test environment */
g_setenv ("GDA_TOP_BUILD_DIR", TOP_BUILD_DIR, 0);
g_setenv ("GDA_TOP_SRC_DIR", TOP_SRC_DIR, TRUE);
gda_init ();
provider = gda_vprovider_data_model_new ();
cnc = gda_virtual_connection_open (provider, NULL);
g_assert (cnc);
/* create RW data model to store results */
rw_model = gda_data_model_array_new_with_g_types (2, G_TYPE_STRING, G_TYPE_INT);
gda_data_model_set_column_name (rw_model, 0, "country");
gda_data_model_set_column_name (rw_model, 1, "population");
/* load CSV data models */
GdaDataModel *country_model, *city_model;
GdaSet *options = gda_set_new_inline (1, "TITLE_AS_FIRST_LINE", G_TYPE_BOOLEAN, TRUE);
file = g_build_filename (CHECK_FILES, "tests", "data-models", "city.csv", NULL);
city_model = gda_data_model_import_new_file (file, TRUE, options);
g_free (file);
file = g_build_filename (CHECK_FILES, "tests", "data-models", "country.csv", NULL);
country_model = gda_data_model_import_new_file (file, TRUE, options);
g_free (file);
g_object_unref (options);
/* Add data models to connection */
if (!gda_vconnection_data_model_add_model (GDA_VCONNECTION_DATA_MODEL (cnc), rw_model, "results", &error))
g_error ("Add RW model error: %s\n", error && error->message ? error->message : "no detail");
if (!gda_vconnection_data_model_add_model (GDA_VCONNECTION_DATA_MODEL (cnc), city_model, "city", &error))
g_error ("Add city model error: %s\n", error && error->message ? error->message : "no detail");
if (!gda_vconnection_data_model_add_model (GDA_VCONNECTION_DATA_MODEL (cnc), country_model, "country", &error))
g_error ("Add country model error: %s\n", error && error->message ? error->message : "no detail");
/* test */
GdaDataModel *model;
model = run_sql_select (cnc, "SELECT * FROM city");
gda_data_model_dump (model, stdout);
g_object_unref (model);
model = run_sql_select (cnc, "SELECT __gda_row_nb, * FROM city");
gda_data_model_dump (model, stdout);
g_object_unref (model);
/* compute list of countries where population >= 1M */
if (! run_sql_non_select (cnc, "INSERT INTO results SELECT co.name, sum (ci.population) as pop FROM country co INNER JOIN city ci ON (co.code=ci.countrycode) GROUP BY co.name HAVING sum (ci.population) > 10000000 ORDER BY co.name DESC"))
g_error ("Could not run computation query");
/* save resulting data model to CSV */
gchar *export, *expected;
export = gda_data_model_export_to_string (rw_model, GDA_DATA_MODEL_IO_TEXT_SEPARATED,
NULL, 0, NULL, 0, NULL);
file = g_build_filename (CHECK_FILES, "tests", "data-models", "check_virtual.csv", NULL);
if (!g_file_get_contents (file, &expected, NULL, NULL))
return EXIT_FAILURE;
g_free (file);
if (strcmp (export, expected))
return EXIT_FAILURE;
g_free (export);
g_free (expected);
g_object_unref (city_model);
g_object_unref (country_model);
g_object_unref (cnc);
g_object_unref (provider);
g_print ("Ok.\n");
return EXIT_SUCCESS;
}
static GdaDataModel *
run_sql_select (GdaConnection *cnc, const gchar *sql)
{
GdaStatement *stmt;
GError *error = NULL;
GdaDataModel *res;
GdaSqlParser *parser;
parser = gda_connection_create_parser (cnc);
stmt = gda_sql_parser_parse_string (parser, sql, NULL, NULL);
g_object_unref (parser);
res = gda_connection_statement_execute_select (cnc, stmt, NULL, &error);
g_object_unref (stmt);
if (!res)
g_error ("Could not execute query: %s\n",
error && error->message ? error->message : "no detail");
return res;
}
static gboolean
run_sql_non_select (GdaConnection *cnc, const gchar *sql)
{
GdaStatement *stmt;
GError *error = NULL;
gint nrows;
GdaSqlParser *parser;
parser = gda_connection_create_parser (cnc);
stmt = gda_sql_parser_parse_string (parser, sql, NULL, NULL);
g_object_unref (parser);
nrows = gda_connection_statement_execute_non_select (cnc, stmt, NULL, NULL, &error);
g_object_unref (stmt);
if (nrows == -1) {
g_print ("NON SELECT error: %s\n", error && error->message ? error->message : "no detail");
if (error)
g_error_free (error);
return FALSE;
}
return TRUE;
}
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