HyperDAML

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HyperDAML is a tool which produces an HTML hypertext version of a DAML or RDF document, providing fragments for IDs, and links to referenced resources (links to referenced namespaces, classes, and properties may be added in the future). It is currently a proof-of-concept implementation of the Hypertext DAML Ontologies item on the DAML Tools Wishlist (although it is also useful for instance content).

Roughly, HyperDAML does for DAML and RDF what Hypermail does for email messages.

HyperDAML is available via a WWW form interface, a WWW CGI interface, or download.

Examples

DAML	HyperDAML
gedcom.daml	gedcom.html
jhendler.daml	jhendler.html
mdean.html	mdean.html
daml+oil.daml	daml+oil.html
daml+oil-ex.daml	daml+oil-ex.html

WWW Form Interface

WWW CGI Interface

A CGI interface is also available for use from HTML pages. Link to http://www.daml.org/cgi-bin/hyperdaml?your-uri. If no ?uri is specified, this script will look for an HTTP Referer request header, allowing usage in your page like


        click <a href="http://www.daml.org/cgi-bin/hyperdaml">here</a> to view embedded DAML

Download

2 implementations have been developed and are available for download:

hyperdaml.java: This is the most functional version, used to produce the examples above. It requires Java 2 and JAXP 1.1 or later.
hyperdaml.xsl: This is a less functional version. It was developed using Xalan Java 2 but should run with any XSLT processor.

Caveats

The JAXP parser currently used by hyperdaml gets exceptions when processing certain key documents and document types:
- when processing HTML and XHTML documents with !DOCTYPEs like http://www.w3.org/TR/REC-html40/loose.dtd:
  Next character must be ">" terminating declaration "%HTML.Version".
- when processing the RDF Schema namespace http://www.w3.org/2000/01/rdf-schema#:
  Character conversion error: "Malformed UTF-8 char -- is an XML encoding declaration missing?" (line number may be too low)
  probably due to the French labels.
hyperdaml can incur a noticeable delay when processing large documents
hyperdaml only generates #name when rdf:ID is used, not rdf:about

Possible Future Directions

A todo list of possible enhancements is available here:

items marked with an (X) have been completed
items marked with a (fraction) have been partially completed
other items are still outstanding

Please send additional suggestions to Mike Dean.

Related Work

Joe Kopena concurrently developed a similar CGI script in Perl to markup DAML pages.

Author

Mike Dean

$Id: index.xml,v 1.15 2003/12/19 17:08:31 mdean Exp $