[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX2: DTDDeclHandler (minimalist position)
I haven't been paying too much attention to SAX, but today I was sitting in my office waiting for students to drop by. They never do, except right before and after exams, so I was a little bored and started reading threads I'd normally filter, and I noticed something: > > public interface DTDDeclHandler > { > public final static int ATTRIBUTE_DEFAULTED = 1; > public final static int ATTRIBUTE_IMPLIED = 2; > public final static int ATTRIBUTE_REQUIRED = 3; > public final static int ATTRIBUTE_FIXED = 4; > How committed are you to using integer constants? I know this is common, but it tends to lend itself to bad code. Some people prefer a solution like this: public class AttributStatus { public final static AttributeStatus ATTRIBUTE_DEFAULTED = new AttributeStatus(); public final static AttributeStatus ATTRIBUTE_IMPLIED = new AttributeStatus(); public final static AttributeStatus ATTRIBUTE_FIXED = new AttributeStatus(); public final static AttributeStatus ATTRIBUTE_REQUIRED = new AttributeStatus(); private AttributeStatus() {} } This creates four menmonic constants you want and gives them a checkable type. New constants can't be created because of the private constructor. And there's no chance that anybody's going to write code like if (getAttributeStatus() == 1) { doSomething(); } Programmers are more or less forced to use the constants. What do you think? -- Elliotte Rusty Harold elharo@m... 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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