[redland-dev] Patch for Model class in JAVA bindings

[Attilio Fiandrotti]

Hi

i noticed that when i call Model.getTarget() with an unexisting target, 
a new Node is created even if librdf_model_get_target() returned null, 
and so it's not possible for the user detecting if a target was found or 
not.
With the attached patch ( that i guess should be applied also to 
getSource(), getArc(), getFeature() ) the user is able to detect a 
search with no results with something like

Node obj = model.getTarget( <my source> ,<my arc> );
if ( obj == null ) {
	//manage missing target
}


Attilio

ps

any chance to fix the other bug [1] i reported some times ago?

[1] http://lists.gnomehack.com/pipermail/redland-dev/2006-June/001336.html


Index: java/org/librdf/redland/Model.java
===================================================================
--- java/org/librdf/redland/Model.java  (revisione 10984)
+++ java/org/librdf/redland/Model.java  (copia locale)
@@ -181,7 +181,11 @@

    public Node getTarget(Node source, Node arc)
    {
-    return new Node(this.world, 
core.librdf_model_get_target(this.object, source.__get_object(), 
arc.__get_object()), true);+       long node = 
core.librdf_model_get_target(this.object, source.__get_object(), 
arc.__get_object());
+       if (node == 0)
+               return null;
+       else
+               return new Node(this.world, node);
    }

    public Node getFeature(URI feature)