[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX: ModSAX addition, general property query
----- Original Message ----- From: Bill la Forge <b.laforge@j...> To: John Wilson <tug@w...>; XML Developers' List <xml-dev@i...> Sent: 09 March 1999 12:39 Subject: 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. Certainly you need to instantiate an object per handler, however it need not be too ugly public class MyFilter { public final DTDHandler dtdHandler = new DTDHandler() { ... }; public final DocumentHandler documentHandler = new DocumentHandler() { ... }; .... } would seem to me to be a reasonable way of dealing with this. John Wilson The Wilson Partnership 5 Market Hill, Whitchurch, Aylesbury, Bucks HP22 4JB, UK +44 1296 641072, +44 976 611010(mobile), +44 1296 641874(fax) Mailto: tug@w... 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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