[libgda] sqlite: recordset destruction improvements

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 35370800e1251e09baa78d576d4532909742e080
Author: Daniel Espinosa <esodan gmail com>
Date:   Tue Oct 9 15:59:44 2018 -0500

    sqlite: recordset destruction improvements

 libgda/sqlite/gda-sqlite-recordset.c | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)
---
diff --git a/libgda/sqlite/gda-sqlite-recordset.c b/libgda/sqlite/gda-sqlite-recordset.c
index 22db1e26a..fa163f306 100644
--- a/libgda/sqlite/gda-sqlite-recordset.c
+++ b/libgda/sqlite/gda-sqlite-recordset.c
@@ -48,6 +48,7 @@ static void gda_sqlite_recordset_class_init (GdaSqliteRecordsetClass *klass);
 static void gda_sqlite_recordset_init       (GdaSqliteRecordset *recset,
                                             GdaSqliteRecordsetClass *klass);
 static void gda_sqlite_recordset_dispose   (GObject *object);
+static void gda_sqlite_recordset_finalize   (GObject *object);
 
 /* virtual methods */
 static gint    gda_sqlite_recordset_fetch_nb_rows (GdaDataSelect *model);
@@ -90,6 +91,7 @@ gda_sqlite_recordset_class_init (GdaSqliteRecordsetClass *klass)
        parent_class = g_type_class_peek_parent (klass);
 
        object_class->dispose = gda_sqlite_recordset_dispose;
+       object_class->finalize = gda_sqlite_recordset_finalize;
        pmodel_class->fetch_nb_rows = gda_sqlite_recordset_fetch_nb_rows;
        pmodel_class->fetch_random = gda_sqlite_recordset_fetch_random;
 
@@ -111,18 +113,35 @@ gda_sqlite_recordset_dispose (GObject *object)
        if (recset->priv) {
                GdaSqlitePStmt *ps;
                ps = GDA_SQLITE_PSTMT (GDA_DATA_SELECT (object)->prep_stmt);
-               ps->stmt_used = FALSE;
-               virt_cnc_set_working_obj (gda_data_select_get_connection ((GdaDataSelect*) recset), recset);
-               SQLITE3_CALL (sqlite3_reset) (ps->sqlite_stmt);
-               virt_cnc_set_working_obj (gda_data_select_get_connection ((GdaDataSelect*) recset), NULL);
+               if (ps != NULL) {
+                       ps->stmt_used = FALSE;
+                       virt_cnc_set_working_obj (gda_data_select_get_connection ((GdaDataSelect*) recset), 
recset);
+                       SQLITE3_CALL (sqlite3_reset) (ps->sqlite_stmt);
+                       virt_cnc_set_working_obj (gda_data_select_get_connection ((GdaDataSelect*) recset), 
NULL);
+               }
 
-               if (recset->priv->tmp_row)
+               if (recset->priv->tmp_row) {
                        g_object_unref (recset->priv->tmp_row);
+                       recset->priv->tmp_row = NULL;
+               }
+       }
+
+       parent_class->dispose (object);
+}
+
+static void
+gda_sqlite_recordset_finalize (GObject *object)
+{
+       GdaSqliteRecordset *recset = (GdaSqliteRecordset *) object;
+
+       g_return_if_fail (GDA_IS_SQLITE_RECORDSET (recset));
+
+       if (recset->priv) {
                g_free (recset->priv);
                recset->priv = NULL;
        }
 
-       parent_class->dispose (object);
+       parent_class->finalize (object);
 }
 
 /*