SAX: String Internalisation and a CORBA/DCOM Question
Here's another last-minute SAX question: should org.xml.sax.Parser expose a method for internalising strings? public abstract String intern (String s); Most Java-based parsers, at least, already use some type of internalisation (but not, usually, the inefficient java.lang.String.intern() method) for names -- the SAX driver could expose this functionality if support is already there, or do its own internalising if support is absent. As someone has already pointed out, internalised strings will make a dramatic difference for the speed of applications, since applications can use a simple '==' operator (or the local equivalent) to test for equality rather than a slow subroutine like java.lang.String.equals(). My only concern has to do with distributed environments: is it possible to use internalisation with CORBA or DCOM? In other words, is there a way to guarantee that an object broker returns what turns out to be the same object/pointer during different calls? Help or advice will be gratefully accepted. By the way, here's the minimum list of what should be internalised in the callbacks from the SAX parser: - element type names in DocumentHandler.startElement and DocumentHandler.endElement - attribute names in AttributeList.getName() - attribute types in AttibuteList.getType() (both variants) There are other candidates, such as tokenised attribute values, PI targets, and notations and entity names. How large should the list be? Thanks, and all the best, David -- David Megginson ak117@f... Microstar Software Ltd. dmeggins@m... http://home.sprynet.com/sprynet/dmeggins/ 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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