Andy Seaborne commented on JENA-1232:

Not hearing anything, I'll close this.

The import point is that we could have toString() relative to a common set of 
prefixes but not a graph sensitive one.

> Node toString() method doesn't take into account the prefix mapping for 
> literals
> --------------------------------------------------------------------------------
>                 Key: JENA-1232
>                 URL: https://issues.apache.org/jira/browse/JENA-1232
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: Base
>    Affects Versions: Jena 3.1.0
>            Reporter: Lorenz B├╝hmann
>            Priority: Trivial
> Hi,
> not sure whether this is really a (very minor) bug or just a decision by 
> design, but what I discovered during using the graph layer of Jena was the 
> following:
> The class org.apache.jena.graph.Node provides some toString() methods, among 
> others, one which allows to add a PrefixMapping as argument
> This is then taken into account for rendering the object, e.g. to provide a 
> prefixed form of a URI. But I have recognized now that this doesn't work for 
> literals, e.g.
> "1"^^<http://www.w3.org/2001/XMLSchema#int>
> is never shortened to
> "1"^^xsd:int
> When looking into the code, I saw that in the class  
> org.apache.jena.graph.Node_Literal the prefix mapping is just ignored then 
> [1], probably because it's delegated to a method of the class LiteralLabel 
> which doesn't seem to have any method that uses prefix mappings.
> I know that this basically affects the core API, so probably this wasn't 
> designed for 3rd party use and extensions - in that case, simply close this 
> issue and I will continue with my current workaround.
> [1] 
> https://github.com/apache/jena/blob/master/jena-core/src/main/java/org/apache/jena/graph/Node_Literal.java#L67

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