[libgda/gtk3] Corrected gda_holder_get_value() in case holder has been marked as invalid



commit bbf7f1fd9c5b5558c1757f0fe743867a9bff2820
Author: Vivien Malerba <malerba gnome-db org>
Date:   Thu Oct 28 15:44:15 2010 +0200

    Corrected gda_holder_get_value() in case holder has been marked as invalid
    
    in this case make sure the returned value is NULL and not
    a value of type GDA_TYPE_NULL

 libgda/gda-holder.c                |   35 ++++++++++++++++++++---------------
 tests/value-holders/check_holder.c |    2 +-
 2 files changed, 21 insertions(+), 16 deletions(-)
---
diff --git a/libgda/gda-holder.c b/libgda/gda-holder.c
index 7d1eeb9..e594d06 100644
--- a/libgda/gda-holder.c
+++ b/libgda/gda-holder.c
@@ -721,6 +721,8 @@ gda_holder_get_id (GdaHolder *holder)
  *
  * If @holder is set to NULL, then the returned value is a #GDA_TYPE_NULL GValue.
  *
+ * If @holder is invalid, then the returned value is %NULL.
+ *
  * Returns: the value, or %NULL
  */
 const GValue *
@@ -729,22 +731,26 @@ gda_holder_get_value (GdaHolder *holder)
 	g_return_val_if_fail (GDA_IS_HOLDER (holder), NULL);
 	g_return_val_if_fail (holder->priv, NULL);
 
-	if (!holder->priv->full_bind) {
-		/* return default value if possible */
-		if (holder->priv->default_forced) {
-			g_assert (holder->priv->default_value);
-			if (G_VALUE_TYPE (holder->priv->default_value) == holder->priv->g_type) 
-				return holder->priv->default_value;
-			else
-				return NULL;
+	if (holder->priv->full_bind)
+		return gda_holder_get_value (holder->priv->full_bind);
+	else {
+		if (holder->priv->valid) {
+			/* return default value if possible */
+			if (holder->priv->default_forced) {
+				g_assert (holder->priv->default_value);
+				if (G_VALUE_TYPE (holder->priv->default_value) == holder->priv->g_type) 
+					return holder->priv->default_value;
+				else
+					return NULL;
+			}
+			
+			if (!holder->priv->value)
+				holder->priv->value = gda_value_new_null ();
+			return holder->priv->value;
 		}
-
-		if (!holder->priv->value)
-			holder->priv->value = gda_value_new_null ();
-		return holder->priv->value;
+		else
+			return NULL;
 	}
-	else 
-		return gda_holder_get_value (holder->priv->full_bind);
 }
 
 /**
@@ -1230,7 +1236,6 @@ gda_holder_force_invalid (GdaHolder *holder)
 
 	holder->priv->invalid_forced = TRUE;
 	holder->priv->valid = FALSE;
-	
 	if (holder->priv->value) {
 		if (holder->priv->is_freeable)
 			gda_value_free (holder->priv->value);
diff --git a/tests/value-holders/check_holder.c b/tests/value-holders/check_holder.c
index efe6dad..d014131 100644
--- a/tests/value-holders/check_holder.c
+++ b/tests/value-holders/check_holder.c
@@ -227,7 +227,7 @@ test3 (GError **error)
 		return FALSE;
 	}
 	cvalue = gda_holder_get_value (h);
-	if (!gda_value_is_null (cvalue)) {
+	if (cvalue) {
 		g_set_error (error, 0, 0, "%s", 
 			     "GdaHolder's value is incorrect");
 		return FALSE;



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