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Re: visual query tools: SHOE/PARKA applet

From: Jeff Heflin <heflin@cs.umd.edu>
Date: Tue, 30 May 2000 14:18:08 -0400
Message-ID: <393405E0.E263320@cs.umd.edu>
To: www-rdf-interest@w3.org
At Dan Brickley's request, I have made the source code for both the
binary and n-ary versions of the PIQ (the Parka query interface)
available. The code is written in Java 1.0 and can be found at

As written, it relies on a Parka-DB server for the backend, if you don't
have a Parka license, you will have to modify the code to use some other
appropriate backend. If you wish to obtain a Parka license, contact
James Hendler at hendler@cs.umd.edu.

Jeff Heflin

> Date: Fri, 26 May 2000 08:33:18 -0400 (EDT)
> From: Dan Brickley <danbri@w3.org>
> To: www-rdf-interest@w3.org
> cc: eric@w3.org
> Message-ID: <Pine.LNX.4.20.0005260811250.6794-100000@tux.w3.org>
> Subject: visual query tools: SHOE/PARKA applet
> I just stumbled across a rather neat Java-based query demo on the
> SHOE/PARKA site.
> http://www.cs.umd.edu/projects/plus/SHOE/binpiq.html (older binary-relations)
> http://www.cs.umd.edu/projects/plus/SHOE/piq.html (new n-ary relation)
> The two versions of the applet correspond to SHOE's evolution from an
> RDF-like binary relations model to a full n-ary relations approach. The
> Java applet demo allows the graphical creation of queries. Basically it's
> a simple visual graph editor with the ability to flag each node in the
> graph as a variable. The query structure can then be sent to a server
> which responds with a result-set that can also be viewed in terms of the
> query graph.
> For the Java-averse, there are screenshots,
> http://www.cs.umd.edu/projects/plus/SHOE/images/plusquery.gif
> http://www.cs.umd.edu/projects/plus/SHOE/images/pubquery.gif
> (rounded nodes represent variables in these displays)
> Dan
Received on Tuesday, 30 May 2000 14:18:15 UTC

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