[libgda] Misc. corrections

[Vivien Malerba <vivien src gnome org>]

commit 1ae9a4bc3fdf3b38c7ef41ba25cdbe3807277ed2
Author: Vivien Malerba <malerba gnome-db org>
Date:   Tue May 3 16:28:46 2011 +0200

    Misc. corrections

 libgda/gda-attributes-manager.c |    2 +-
 libgda/gda-connection.c         |   17 +++++++++++------
 libgda/gda-tree-node.c          |   10 +++++-----
 tools/browser/auth-dialog.c     |    2 +-
 4 files changed, 18 insertions(+), 13 deletions(-)
---
diff --git a/libgda/gda-attributes-manager.c b/libgda/gda-attributes-manager.c
index 8124814..bd89108 100644
--- a/libgda/gda-attributes-manager.c
+++ b/libgda/gda-attributes-manager.c
@@ -250,7 +250,7 @@ manager_real_set (GdaAttributesManager *mgr, gpointer ptr,
  * @mgr: a #GdaAttributesManager
  * @ptr: a pointer to the resources to which the attribute will apply
  * @att_name: an attribute's name
- * @value: a #GValue, or %NULL
+ * @value: (transfer none): a #GValue, or %NULL
  *
  * Associates an attribute named @att_name to @ptr, with the value @value. Any previous association is replaced by
  * this one, and if @value is %NULL then the association is removed.
diff --git a/libgda/gda-connection.c b/libgda/gda-connection.c
index 7ff4e5d..5da6358 100644
--- a/libgda/gda-connection.c
+++ b/libgda/gda-connection.c
@@ -2705,6 +2705,11 @@ gda_connection_statement_prepare (GdaConnection *cnc, GdaStatement *stmt, GError
 	}
 }
 
+/*
+ * @args is consumed as a succession of (column number, GType) arguments
+ * which ends with a column number of -1. The returned array is always terminated by G_TYPE_NONE,
+ * and contains 0 where no column type information has been provided
+ */
 static GType *
 make_col_types_array (va_list args)
 {
@@ -2712,16 +2717,16 @@ make_col_types_array (va_list args)
 	gint max = 10;
 	gint col;
 
-	types = g_new (GType, max + 1);
-	for (col = 0; col <= max; col ++)
-		types[col] = G_TYPE_NONE;
+	types = g_new0 (GType, max + 1);
+	types [max] = G_TYPE_NONE;
 	for (col = va_arg (args, gint); col >= 0; col = va_arg (args, gint)) {
-		if (col > max) {
+		if (col >= max) {
 			gint i;
 			types = g_renew (GType, types, col + 5 + 1);
-			for (i = max; col <= col + 5; i ++)
-				types[i] = G_TYPE_NONE;
+			for (i = max; i <= col + 5; i ++)
+				types[i] = 0;
 			max = col + 5;
+			types [max] = G_TYPE_NONE;
 		}
 		types [col] = va_arg (args, GType);
 	}
diff --git a/libgda/gda-tree-node.c b/libgda/gda-tree-node.c
index f40eef0..b8e9f81 100644
--- a/libgda/gda-tree-node.c
+++ b/libgda/gda-tree-node.c
@@ -1,5 +1,5 @@
-/* GDA library
- * Copyright (C) 2009 - 2010 The GNOME Foundation.
+/*
+ * Copyright (C) 2009 - 2011 The GNOME Foundation.
  *
  * AUTHORS:
  *      Vivien Malerba <malerba gnome-db org>
@@ -724,7 +724,7 @@ gda_tree_node_get_node_attribute (GdaTreeNode *node, const gchar *attribute)
  * gda_tree_node_set_node_attribute:
  * @node: a #GdaTreeNode
  * @attribute: attribute name
- * @value: a #GValue, or %NULL
+ * @value: (transfer none): a #GValue, or %NULL
  * @destroy: a function to be called when @attribute is not needed anymore, or %NULL
  *
  * Set the value associated to a named attribute. The @attribute string is used AS IT IS by this method (eg.
@@ -738,8 +738,8 @@ gda_tree_node_get_node_attribute (GdaTreeNode *node, const gchar *attribute)
  * For example one would use it as:
  *
  * <code>
- * gda_tree_node_set_node_attribute (node, g_strdup (my_attribute), g_free, my_value);
- * gda_tree_node_set_node_attribute (node, GDA_ATTRIBUTE_NAME, NULL, my_value);
+ * gda_tree_node_set_node_attribute (node, g_strdup (my_attribute), my_value, g_free);
+ * gda_tree_node_set_node_attribute (node, GDA_ATTRIBUTE_NAME, my_value, NULL);
  * </code>
  *
  * If there is already an attribute named @attribute set, then its value is replaced with the new value (@value is
diff --git a/tools/browser/auth-dialog.c b/tools/browser/auth-dialog.c
index 744aec8..37ade6f 100644
--- a/tools/browser/auth-dialog.c
+++ b/tools/browser/auth-dialog.c
@@ -622,7 +622,7 @@ auth_dialog_run (AuthDialog *dialog)
 						const GValue *cvalue = NULL;
 						if (gda_holder_is_valid (holder))
 							cvalue = gda_holder_get_value (holder);
-						if (cvalue) {
+						if (cvalue && (G_VALUE_TYPE (cvalue) != GDA_TYPE_NULL)) {
 							gchar *r1, *r2;
 							r1 = gda_value_stringify (cvalue);
 							r2 = gda_rfc1738_encode (r1);