Re: SAX RFD: ModSAX Predefined Features
Again, I think that unifying these under the generic get/set API (with Boolean.TRUE and Boolean.FALSE objects as values for features that are really boolean) could be useful. Documentation for each feature should specify whether it's changeable mid-parse ... I'd suggest "no" as the default answer! Mike Dacon commented about the "API archaeology" aspect of this name; perhaps the "Parser2" style naming convention can avoid losing technical context (i.e. this is still a parser, even if it's parsing a DOM or a stream of SAX events :-). > 1. http://xml.org/sax/features/validation Good. (I'm curious if folks prefer one parser, which can have this feature toggled, vs two, where the parser comes with at least an initial value.) > 2A. http://xml.org/sax/features/external-general-entities > 2B. http://xml.org/sax/features/external-parameter-entities Right, two kinds of parsed entities, two control knobs. Validating parsers must refuse to change these knobs. (OK, _five_ kind of parser -- validating, and four kinds of nonvalidating parser! ;-) > 3. http://xml.org/sax/features/namespaces I'd rather have this just kick in modified XML syntax rules (e.g. entity names may never be scoped, and scoped names may have only one interior colon). With that, one can layer the rest of namespace processing on top in any of several fashions. A DOM can be built which exposes namespace declarations; or a filter can munge names and strip out the declarations. The "munge" feature could get its own namespace URI. > 4. http://xml.org/sax/features/unbuffered-input > True means ensure that the parser does not buffer input from a > Reader or InputStream supplied by the application (actually, > one-character look-ahead will usually be required); false means do > not ensure that the parser does not buffer input. This feature might > be useful for reading multiple documents from a single stream. I'm not sure this is a common enough feature to need to be predefined ... support for "XML Islands" within HTML may become important, but much of this can be done (at least in Java) by requiring pushback to be done at appropriate points. > http://xml.org/sax/features/normalize-text This is a good filter feature, I think. Lars suggested a "Catalog" feature. There are different sorts of catalog, and they need configuration, so the value of this could be a URI for the catalog, not just a boolean. Plus, this would seem to be up to the "EntityResolver" to handle ... yes? It'd perhaps suggest that one could ask the next filter in the stream for the resolver it was using ... :-) Good discussion, gang! - Dave 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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