[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SAX: ModSAX addition, general property query
Hi David, In a message dated 3/8/99 9:10:40 AM Eastern Standard Time, david@m... writes: > What: Additions to ModParser interface > > I'm proposing a couple of additions to the ModParser interface: > > public interface ModParser extends Parser > { > public abstract void setFeature (String featureID, boolean state) > throws SAXNotSupportedException; > public abstract void setHandler (String handlerID, ModHandler handler) > throws SAXNotSupportedException; > public abstract void set (String infoID, Object prop) > throws SAXNotSupportedException; > public abstract Object get (String infoID) > throws SAXNotSupportedException; > } > > These allow you to do interesting things like > > parser.set("http://www.foo.com/props/textfilter", filter); > > or > > try { > Node node = parser.get("http://xml.org/sax/props/dom-node"); > } catch (SAXNotRecognizedException e1) { > // doesn't know about DOM processing... > } catch (SAXNotSupportedException e2) { > // knows about DOM processing, but not doing it... > } > I think the success of a general set() and get() capability will be based on the creation of a good initial set of descriptors (what you called infoID) to get or set. So, in that vein, I have 2 comments: 1. I still strongly urge not to use a URI for a feature or infoID. These are not resource locations they are just a descriptive string. In fact, I bet that most parsers just implement your initial recommended set. 2. I'd recommend that constants be defined in the interface for the initial set of standard features and infoIDs. Something like: public static final String VALIDATE = "sax.feature.validation"; public static final String DOCUMENT = "sax.dom.Document"; Then I can do this: try { parser.setFeature(ModParser.VALIDATE, true); } catch (SAXNotRecognizedException e1) { // doesn't know about validation } catch (SAXNotSupportedException e2) { // Does not support validation } Best wishes, - Mike (mdaconta@a...) 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...)
|
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|