[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX: org.xml.sax.AttributeMap
David> David Megginson <URL:mailto:ak117@f...> => In article <199802250138.UAA00524@u...>, David => wrote: David> David Megginson writes: David> package org.xml.sax; David> David> public interface AttributeList { David> David> //... David> public abstract String getType (int index); David> //... David> David> } We're returning one of a bounded, known set of values. I'd prefer to use an int for this type of thing, along with a set of constants. I.e. public abstract String getType (int index); public static final int CDATA = 0; public static final int NMTOKEN = 1; // etc. The only advantage a String has over this is that you can meaningfully present it to the user as it is. A disadvantage of String is that it is computationally expensive to compare for equality (or equivalently, and worse, to switch() on it). Comparison becomes easier if one provides a set of String constants and guarantees that returned values will test equal with "==". That is not too different to my suggestion of using numeric constants. Converting integers to human-readable Strings is easy: public static String[] typeNames = new String[/* some size */]; static { typeNames[CDATA] = "CDATA"; typeNames[NMTOKEN] = "NMTOKEN"; // etc. } but I don't think this needs to be part of the interface. One might wish to use short or char instead of int if storage space is at a premium; I'm making no judgement on which arithmetic type is best. This proposal is not Java-specific. -- 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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