[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX: Entity Resolution
David Megginson wrote: > ENTITY RESOLUTION > ----------------- > > While I agree that a full entity manager would be more powerful than a > simple callback, I am not certain that the power will really be needed > by most SAX users; furthermore, if it is needed, that functionality > can be supplied more generally by an HTTP or FTP proxy server. For > now, then, I recommend that we stick with the resolveEntity callback, > which is simple to use and to learn, but provides 80% of the required > functionality (that's 80% in the abstract 80/20 sense). I agree with James on this one. I think that the entity manager interface is actually simpler in several senses: #1. It more perfectly allows you to ignore entities if you don't care about them. Think of the difference between 1.0 AWT and 1.1 AWT event handling. In the former you implement certain callbacks to get certain behaviour. In the latter, you register callbacks. In the old-style interface, it was only possible to make a simple applet that ignored most events by using the magic of inheritance (which we should not depend on too heavily). In the new-style interface you can ignore a particular object's events by merely not registering a handler for them. I contend that the latter is simpler in the case where you don't care about the events. #2. It more perfectly aligns with the language and intent of the SGML spec. where an entity handler is a distinct and important code module. XML-Lang does not specify the concept of an entity handler, but those of us from the SGML world know it to be a useful organizing concept and I think we can help the XML new-comers by promoting it. #3. The role of the XML App is not to provide information, but to consume it. I think that mixing up these responsibilities is confusing and complicates the construction of XML Apps. -- http://itrc.uwaterloo.ca/~papresco Art is always at peril in universities, where there are so many people, young and old, who love art less than argument, and dote upon a text that provides the nutritious pemmican on which scholars love to chew. -- Robertson Davies in "The Cunning Man" 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/ 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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