CORBA

From Academic Kids

In computing, Common Object Request Broker Architecture (CORBA), is a standard for software componentry. The CORBA standard is created and controlled by the Object Management Group (OMG). It defines APIs, communication protocol, and object/service information models to enable heterogeneous applications written in various languages running on various platforms to interoperate. CORBA therefore provides platform and location transparency for sharing well-defined objects across a distributed computing platform.

In a general sense CORBA "wraps" code written in some language into a bundle containing additional information on the capabilities of the code inside, and how to call it. The resulting wrapped objects can then be called from other programs (or CORBA objects) over the network. In this sense, CORBA can be considered as a machine-readable documentation format, similar to a header file but with considerably more information.

CORBA uses an interface definition language (IDL) to specify the interfaces that objects will present to the world. CORBA then specifies a "mapping" from IDL to a specific implementation language like C++ or Java. This mapping precisely describes how the CORBA data types are to be used in both client and server implementations. Standard mappings exist for Ada, C, C++, Lisp, Smalltalk, Java, and Python. There are also non-standard mappings for Perl and Tcl implemented by ORBs written for those languages.

The CORBA IDL is only one example of an IDL.

In addition to providing users with a language and a platform neutral remote procedure call specification, CORBA defines commonly needed services such as transactions and security.

Contents

CORBA Implementations


  • Combat (http://www.fpx.de/Combat/) A Tcl ORB, and a Tcl layer for C++ ORBs.
  • e*ORB (http://www.prismtechnologies.com/section-item.asp?sid4=&sid3=&sid2=9&sid=18&id=174) - Missing image
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    - A commercial ORB for Ada, C and C++.
  • JacORB (http://www.jacorb.org/) - Missing image
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    - A Free Software (LGPL) ORB implemented in Java.
  • MICO (http://www.mico.org/) - Missing image
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    - A Free Software (GPL) ORB implemented in C++.
  • omniORB (http://omniorb.sourceforge.net/) - Missing image
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    - An Free Software (LGPL) ORB for C++ and Python.
  • Orbacus (http://www.orbacus.com/) - commercial C++ ORB by IONA Technologies
  • Orbix (http://www.iona.com/products/orbix/welcome.htm) - commercial ORB by IONA Technologies
  • Perl ORB (http://sf.net/projects/perlorb/) - Missing image
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    - An Open Source (Artistic License) ORB implemented in Perl.
  • PolyORB - Missing image
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    - A Free Software (MGPL) ORB implemented in Ada.
  • Python ORB (http://www.fnorb.org/) - Missing image
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    - A Free Software (Python license) ORB implemented in Python.
  • SANKHYA Varadhi (http://www.sankhya.com/info/varadhi.html) - Missing image
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    - A commercial ORB for C++
  • TAO (http://www.cs.wustl.edu/~schmidt/TAO.html) - Missing image
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    - The ACE ORB, an Open Source ORB for C++

See also

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References

External links

es:CORBA fr:Common Object Request Broker Architecture gl:CORBA it:CORBA nl:Common Object Request Broker Architecture pl:CORBA pt:CORBA zh:CORBA

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