Apache RDC Taglib - Reusable Dialog Components Tag Library

Apache RDC Taglib - Reusable Dialog Components Tag Library
2014/01/18 - The RDC Taglib has been retired.
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Last Published: 19 August 2009
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Reusable Dialog Components (RDC) Tag Library
JSP 2.0 Reusable Dialog Components (RDC) is
a framework for creating JSP taglibs that
aid in rapid development of voice and multimodal applications.
Project Motivation
Server-side generation of HTML has proven an effective way of
generating the user interface for visual Web applications that
are implemented using server-side application frameworks such
as Struts. Over time, the effort involved in such HTML
generation has been reduced by the availability of various JSP
tag libraries that abstract away the minutiae of HTML
markup. The goal of the RDC project is to achieve for voice
applications what JSP tag libraries have already achieved in
the world of visual Web applications.
The voice application space is seeing rapid growth with the
maturation of speech technologies along with the arrival of a
stable and robust voice programming model as defined in the
W3C VoiceXML 2.0
REC
few years ago. A necessary next step in mainstreaming the
development of server-side voice applications within
environments like Tomcat is the availability of the appropriate
tag libraries that help isolate the JSP developer from the
intricacies of spoken interaction. The goal is to help package
specialized speech design skills in the form of JSP tag
libraries that make it possible for JSP developers to easily
speech-enable Web applications.
Project Overview
The RDC taglib project provides the following pieces:
A small collection of speech dialog components that aid in basic user interaction.
An extensible JSP-2.0 framework for implementing additional speech components that can collaborate in producing complex spoken interaction.
A collection of sample applications that demonstrate the use of these components.
All functionality is implemented either directly as JSP 2.0
tag
or
tagx
files, or as Java classes that implement
the equivalent JSP 2.0 tag implementation interfaces. Dialog
components come with speech grammars authored as
srgs
files, a set of default prompts, and the
associated Java beans that implement validation of the data collected by that component.
The code is under active development, and we are continuing to evolve and enrich the basic framework as we exercise the presently available functionality by authoring new components and by using these components in real-world voice applications.
All components in the RDC taglib produce VoiceXML 2.0 that can be served to any VoiceXML 2.0 compliant voice browser.
The generated applications can be deployed to a standard Tomcat server and be accessed by a VoiceXML 2.0 compliant voice browser.
Requirements
This tag library requires JSP 2.0 support and has been developed on Tomcat 5.5.
It depends on the following libraries, many of which can be obtained from various Apache projects:
jstl.jar and standard.jar (JSTL 1.1.2)
jsp-api.jar (JSP 2.0) for building custom tags
commons-el.jar (1.0) for delayed EL evaluation
struts.jar (1.2.9), commons-digester.jar (1.8.1) and
commons-beanutils.jar (1.8.0) for struts examples and the
rule-based directed dialog
commons-logging.jar (1.1.1) for logging in taglib and sample
applications
commons-scxml.jar (0.9) needed for the SCXML dialog management
strategy of the RDC group container
It may be possible to use Commons library versions lesser than the ones quoted here.
A majority of the tags implemented by this tag library have been
created as
.tag
files.
Tag handlers implemented in Java extend JSP 2.0's
SimpleTagSupport
Documentation
For more information about the Reusable Dialog Components (RDC) Tag Library,
look at the on-line documentation:
View the current release
RDC 1.0 Taglib Documentation
View the development version of the
RDC Taglib Documentation
Download a binary distribution of the Reusable Dialog
Components (RDC) Tag Library:
Download the RDC Tag Library 1.0 release from an
Apache Archives
For information on how to use the distributions in the download section,
look at the following documentation:
Using the Jakarta-Taglibs
Binary Distribution
Using the Jakarta-Taglibs
Source Distribution
RDC News
01/12/2009
The build has been moved to Maven2.
08/01/2006
The SCXML code has been refactored as a generic engine into its own
sub-project
Commons
SCXML
. The RDC taglib has a new dependency of Commons SCXML.
07/29/2005
The RDC tag library has provided an alpha version of an SCXML engine, and a
SCXML dialog management strategy for the RDC group container.
07/20/2005
The RDC tag library has graduated out of Taglibs sandbox with a 1.0 release.
04/25/2005
Internationalization support has been added to all component tags.
02/25/2005
The Music Store sample application is now multi-channel (Speech + small device GUI)!
02/12/2005
Check out the RDC based Music Store sample application (uses Amazon Web Services)!
01/24/2005
Check out the new features in the RDC pre beta release!
09/10/2004
Check out the new Reusable Dialog Components (RDC) taglib!
Contributors
List of contributors:
Rahul Akolkar
2004-2009

The Apache Software Foundation