[glom] Add some runtime warnings.

[Murray Cumming <murrayc src gnome org>]

commit 7193b1f99aaf32cb02f45499feb321632851576e
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Feb 3 08:57:55 2012 +0100

    Add some runtime warnings.
    
    	* glom/libglom/db_utils.cc: get_table_names_from_database():
    	Slightly improved error checking.
    	* glom/libglom/privs.cc: set_table_privileges():
    	Warn if a GRANT fails.

 ChangeLog                |    9 +++++++++
 glom/libglom/db_utils.cc |    8 ++++++--
 glom/libglom/privs.cc    |    6 +++++-
 3 files changed, 20 insertions(+), 3 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index e99b7be..208ba57 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2012-02-03  Murray Cumming  <murrayc murrayc com>
+
+	Add some runtime warnings.
+
+	* glom/libglom/db_utils.cc: get_table_names_from_database():
+	Slightly improved error checking. 
+	* glom/libglom/privs.cc: set_table_privileges():
+	Warn if a GRANT fails.
+
 2012-02-02  Murray Cumming  <murrayc murrayc com>
 
 	Share on Network: Add reassuring message when user removal fails.
diff --git a/glom/libglom/db_utils.cc b/glom/libglom/db_utils.cc
index 60084c5..2ea67b6 100644
--- a/glom/libglom/db_utils.cc
+++ b/glom/libglom/db_utils.cc
@@ -1067,11 +1067,15 @@ type_vec_strings get_table_names_from_database(bool ignore_system_tables)
       std::cerr << G_STRFUNC << ": Error: " << ex.what() << std::endl;
     }
 
-    if(data_model_tables && (data_model_tables->get_n_columns() == 0))
+    if(!data_model_tables)
+    {
+      std::cerr << G_STRFUNC << ": libgda returned an empty tables GdaDataModel for the database." << std::endl;
+    }
+    else if(data_model_tables->get_n_columns() <= 0)
     {
       std::cerr << G_STRFUNC << ": libgda reported 0 tables for the database." << std::endl;
     }
-    else if(data_model_tables)
+    else
     {
       //std::cout << "debug: data_model_tables refcount=" << G_OBJECT(data_model_tables->gobj())->ref_count << std::endl;
       const int rows = data_model_tables->get_n_rows();
diff --git a/glom/libglom/privs.cc b/glom/libglom/privs.cc
index 5d95cbf..58d72c0 100644
--- a/glom/libglom/privs.cc
+++ b/glom/libglom/privs.cc
@@ -251,7 +251,11 @@ bool Privs::set_table_privileges(const Glib::ustring& group_name, const Glib::us
     Privileges priv_autoincrements;
     priv_autoincrements.m_view = true;
     priv_autoincrements.m_edit = true;
-    return set_table_privileges(group_name, GLOM_STANDARD_TABLE_AUTOINCREMENTS_TABLE_NAME, priv_autoincrements);
+    if(!set_table_privileges(group_name, GLOM_STANDARD_TABLE_AUTOINCREMENTS_TABLE_NAME, priv_autoincrements))
+    {
+      std::cerr << G_STRFUNC << ": GRANT failed on autoincrements table." << std::endl;
+      return false;
+    }
   }
 
   return true;