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<a name="The-PolyORB-generic-middleware"></a>
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Previous: <a href="Distribution-models-and-middleware-standards.html#Distribution-models-and-middleware-standards" accesskey="p" rel="prev">Distribution models and middleware standards</a>, Up: <a href="Introduction-to-PolyORB.html#Introduction-to-PolyORB" accesskey="u" rel="up">Introduction to PolyORB</a> [<a href="About-This-Guide.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p>
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<a name="The-PolyORB-generic-middleware-1"></a>
<h3 class="section">1.3 The PolyORB generic middleware</h3>
<p>Typical middleware implementations for one platform support only one
set of such interfaces, predefined configuration capabilities and
cannot interoperate with other platforms. In addition to traditional
middleware implementations, PolyORB provides an original architecture
to enable support for multiple interoperating distribution models in a
uniform canvas.
</p>
<p>PolyORB is a polymorphic, reusable infrastructure for building or
prototyping new middleware adapted to specific application needs. It
provides a set of components on top of which various instances can be
elaborated. These instances (or personalities) are views on PolyORB
facilities that are compliant to existing standards, either at the API
level (application personality) or at the protocol level (protocol
personality). These personalities are mutually exclusive views of the
same architecture.
</p>
<p>The decoupling of application and protocol personalities, and the
support for multiple simultaneous personalities within the same
running middleware, are key features required for the construction of
interoperable distributed applications. This allows PolyORB to
communicate with middleware that implements different distribution
standards: PolyORB provides middleware-to-middleware interoperability
(M2M).
</p>
<p>PolyORB’s modularity allows for easy extension and replacement of its
core and personality components, in order to meet specific requirements.
In this way, standard or application-specific personalities can be
created in a streamlined process, from early stage prototyping to
full-featured implementation. The PolyORB architecture also allows
the automatic, just-in-time creation of proxies between incompatible
environments.
</p>
<p>You may find additional technical literature on PolyORB, including research
papers and implementation notes, on the project websites:
<a href="http://libre.adacore.com/libre/tools/polyorb/">http://libre.adacore.com/libre/tools/polyorb/</a> and
<a href="http://polyorb.objectweb.org/">http://polyorb.objectweb.org/</a>.
</p>
<p><i>Note: PolyORB is the project formerly known as DROOPI, a Distributed
Reusable Object-Oriented Polymorphic Infrastructure</i>
</p>
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