[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX: ModSAX addition, general property query
From: John Wilson <tug@w...> >I don't think that it's unreasonable to insist that objects representing a >Feature, Handler or Property should either implement a distinct interface or >subclass a distinct class. If this is so the Parser can tell what Feature, >Handler or Property is being set by enquiring of the type of the object. (I >favour insisting that they subclass distinct classes because (in Java) that >naturally imposes the restriction that a single object can only represent a >single Property.) Filters often implement more than one (generally all) handler interface and then register themselves with the underlying parser/filter for the same events requested by the overlaying application/filter. Your proposal would require the filter to instantiate seperate objects for each set of events it needs to process, though it could simply pass-through the handlers for those it does not. The role and class of an object are often distinct. This was one of the things I did not like about the aggregation scheme that was proposed by Sun a while back. I think David got it right. Bill xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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