XOM API for Processing XML with Java

[John Cowan <jcowan AT reutershealth.com>]

Laurent Bihanic scripsit:

> What do you think getBaseURI() should return? If called on any node but 
> Element and Document, it can only return the parent's base URI.

+1

> On Element and 
> Document shall it try to resolve absent or relative URIs using the parent's 
> base URI? If yes, how does an application retrieve the actual base URI it 
> has 
> just set?

No.  Java already knows how to resolve the pair {base URI, relative URL};
there is no reason to duplicate that.

> Relative URIs, as these are allowed by the XML Base spec.

Actually, it doesn't.  The value of an xml:base attribute can be a relative
URL, but the value of the base URI that it is specifying cannot.

> In addition, base URIs shall be 
> stored as specified in the input document or by the application and the 
> resolution into absolute URIs shall only occur upon request and depend on 
> the 
> parent base URI.

-1

> Only the xml:base attributes defined by the application should be 
> outputted, 
> the structure of the document defining their scope, as for namespaces.

Since XOM discards entity-boundary information, serializing must insert
xml:base attributes at entity boundaries for reliability.
External entities that contain less than an element (just PIs or PCDATA
or references to other entities) don't count for this purpose.

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