apb.htm

corba比较入门级的介绍详细间接了corba访问发布各种细节。

<H3><A NAME="Heading18"></A><FONT COLOR="#000077">Visigenic Software's VisiBroker
and Other Products'</FONT></H3>
<P>Visigenic is quickly making a name for itself in the CORBA industry. The company
has been successful in licensing its ORB technology to a number of high-profile vendors,
including Borland, Netscape, Novell, Oracle, SGI, and Sybase. In addition to licensing
its technology, Visigenic also offers the following products:

<UL>
	<LI><I>VisiBroker for C++</I> is a complete CORBA ORB for developing CORBA applications
	in C++. VisiBroker is available on a variety of platforms, including Solaris, HP-UX,
	AIX, IRIX, Digital Unix, Windows 95, and Windows NT.<BR>
	<BR>
	
	<LI><I>VisiBroker for Java</I> is a 100% Pure Java implementation of a CORBA ORB.
	Visigenic has the distinction of bringing to market the first CORBA 2.0-compliant
	ORB written in 100% Pure Java.<BR>
	<BR>
	
	<LI>Visigenic also provides implementations for a number of CORBAservices with its
	<I>VisiBroker</I> <I>Naming</I> <I>Service</I> (CORBA Naming Service),<I> VisiBroker
	Event Service </I>(CORBA Event Service), and <I>TPBroker </I>(CORBA Transaction Service).
</UL>

<P>Visigenic has recently announced the <I>Distributed</I> <I>Application</I> <I>Platform</I><B>
</B><I>Architecture </I>(Visigenic/DAP), its plan for a CORBA development platform.
Along with the CORBAservices presently offered, Visigenic plans to add other services,
such as the CORBA Trader Service, integrated transaction capability, and asynchronous
messaging capability.</P>
<P>Information on VisiBroker and other Visigenic products, many of which can be downloaded
as trial versions, is available from Visigenic's Web site at <A HREF="http://www.visigenic.com/"><TT>http://www.visigenic.com/</TT></A>.
<H3><A NAME="Heading19"></A><FONT COLOR="#000077">Xerox PARC's ILU'</FONT></H3>
<P>Strictly speaking, ILU (Inter-Language Unification) is not a CORBA 2.0-compliant
ORB, although it supports IIOP along with the CORBA language mappings for C, C++,
and Java. The capabilities provided by ILU are a superset of CORBA. For example,
languages supported by ILU, in addition to the aforementioned C, C++, and Java, include
Python, Common LISP, and Modula-3. Also, ILU includes, of all things, an implementation
of HTTP (Hypertext Transport Protocol, the mechanism used by the World Wide Web).</P>
<P>According to the ILU Web page, one of the implementation goals is to maximize
compatibility with existing open standards, and this goal is reflected in the availability
list for ILU: SunOS, Solaris, HP-UX, AIX, OSF, IRIX, FreeBSD, Linux, LynxOS, SCO,
Windows 3.1, Windows 95, and Windows NT. Additionally, ILU supports a number of threading
and event loop models. Again, ILU is not strictly a CORBA 2.0-compliant product,
but it is freely available with no restrictions (other than that a copyright notice
must accompany any copies of the software).</P>
<P>Information on ILU, as well as a freely available downloadable copy, is available
at PARC's Web site (actually their FTP site) at <A HREF="ftp://ftp.parc.xerox.com/pub/ilu/ilu.html"><TT>ftp://ftp.parc.xerox.com/pub/ilu/ilu.html</TT></A>.
<H2><A NAME="Heading20"></A><FONT COLOR="#000077">A Look at CORBA-Aware Development
Tools</FONT></H2>
<P>This section describes development tools that are &quot;CORBA-aware,&quot; meaning
that they have at least some knowledge of CORBA application development methodology.
For instance, such a tool can generate and parse IDL definitions or enable a developer
to graphically create a set of IDL interfaces to define the workings of a CORBA application.</P>
<P>Note that a number of development products might include ORBs (as mentioned previously,
Visigenic Software licenses its ORB technology to a number of other software vendors).
Development products that include ORBs without providing CORBA-specific development
tools are not mentioned here.
<H3><A NAME="Heading21"></A><FONT COLOR="#000077">Aonix's Software through Pictures'</FONT></H3>
<P>Software through Pictures is a family of tools that supports, among other things,
object-oriented analysis and design of applications. Software through Pictures supports
a variety of OO methodologies, including the Unified Modeling Language (UML), Object
Modeling Technique (OMT), and Booch. Software through Pictures supports graphical
editing of business requirements, use cases, object models, dynamic models, functional
models, object interaction diagrams, and class tables. Software through Pictures
also integrates with a variety of languages and tools, such as Smalltalk, C++, Java,
and IDL (making it useful as a CORBA design tool); FrameMaker and Interleaf are supported
for automatic generation of documentation. Finally, Software through Pictures supports
SunOS, Solaris, HP-UX, AIX, Digital UNIX, and Windows NT.</P>
<P>More information on the Software through Pictures family of products is available
on Aonix's Web site at <A HREF="http://www.aonix.com/Products/StP/stp.html"><TT>http://www.aonix.com/Products/StP/stp.html</TT></A>.
<H3><A NAME="Heading22"></A><FONT COLOR="#000077">Black &amp; White Software's CORBA
Development Tools'</FONT></H3>
<P>Black &amp; White Software offers a plethora of CORBA development tools:

<UL>
	<LI><I>OrbixBuilder</I> is a family of products that plug in to various development
	tools. OrbixBuilder provides graphical utilities and code generation for CORBA clients
	and servers and is bundled with IONA Technologies' Orbix or OrbixWeb (depending on
	whether a C++ or Java flavor of OrbixBuilder is chosen). In addition to supporting
	Black &amp; White's own UIM/Orbix and Web/Enable, OrbixBuilder supports Symantec's
	Visual Caf&#233;.<BR>
	<BR>
	
	<LI><I>Object/Observer</I> provides diagnostic and trace mechanisms for CORBA applications,
	facilitating the monitoring of server activity, network traffic, and other communication
	details.<BR>
	<BR>
	
	<LI>UIM/Orbix is a graphical application builder tool geared towards the development
	of CORBA applications in C++. In addition, UIM/Orbix is extensible through other
	products offered by Black &amp; White.<BR>
	<BR>
	
	<LI><I>Orb/Enable</I> is a set of tools that simplify CORBA application development.
	It enables the user to create and import IDL files as well as visually browse the
	CORBA server interfaces available in an Interface Repository.<BR>
	<BR>
	
	<LI><I>Web/Enable</I>, an add-on to UIM/Orbix, facilitates the development of CORBA
	applications in Java, complementing UIM/Orbix's C++ development facilities. Web/Enable
	also includes IONA Technologies' OrbixWeb.<BR>
	<BR>
	
	<LI><I>Object/LM</I> provides access control and usage metering for CORBA applications
	as well as license management and a security mechanism.
</UL>

<P>More information on Black &amp; White's CORBA development products is available
on the Black &amp; White Web site at <A HREF="http://www.blackwhite.com/products/corbadev.html"><TT>http://www.blackwhite.com/products/corbadev.html</TT></A>.
<H3><A NAME="Heading23"></A><FONT COLOR="#000077">ParcPlace's Distributed Smalltalk'</FONT></H3>
<P>Distributed Smalltalk is an interactive tool that supports the development of
CORBA applications in--what else--Smalltalk. In addition to providing graphical design
and development tools, Distributed Smalltalk includes a CORBA 2.0-compliant ORB and
implementations for the CORBA Naming Service, the CORBA Event Service, the CORBA
Transaction Service, and the CORBA Concurrency Service. Distributed Smalltalk also
includes other CORBA features, such as an Interface Repository browser and the capability
to generate IDL from existing Smalltalk classes. Distributed Smalltalk supports Windows
3.1, Windows 95, Windows NT, MacOS, HP-UX, AIX, Solaris, and SunOS.</P>
<P>More information on Distributed Smalltalk is available on ParcPlace's Web site
at <A HREF="http://www.parcplace.com/products/dst/info/dst.htm"><TT>http://www.parcplace.com/products/dst/info/dst.htm</TT></A>.
<H3><A NAME="Heading24"></A><FONT COLOR="#000077">Rational Software's Rose'</FONT></H3>
<P>Rational Rose is the most popular visual design tool on the market today. The
tool supports Booch, Object Modeling Technique (OMT), and Unified Modeling Language
(UML) notations and provides tools for use case analysis, class and object modeling,
component modeling, and more. Rose also supports a number of languages, including
Visual Basic, PowerBuilder, C++, Fort&#233;, Java, Smalltalk, and SQLWindows. In
addition, Rose can be used to create logical models for relational databases, supporting
Oracle7, Sybase, SQL Server, Watcom SQL, and ANSI SQL. Of particular use to CORBA
application developers is Rose's capability to generate IDL from graphical object
models. Rose is available on a number of platforms, including Windows 95, Windows
NT, IRIX, Solaris, AIX, Digital UNIX, and HP-UX.</P>
<P>More information on Rose, as well as a downloadable evaluation copy, can be found
on Rational's Web site at <A HREF="http://www.rational.com/products/rose/index.html"><TT>http://www.rational.com/products/rose/index.html</TT></A>.
<H3><A NAME="Heading25"></A><FONT COLOR="#000077">TakeFive Software's SNiFF+'</FONT></H3>
<P>SNiFF+ is a development tool (or actually a family of tools) that supports a wide
variety of languages, including C, C++, FORTRAN, Java, IDL, and others. Useful to
CORBA developers is SNiFF+'s capability to generate and parse IDL files. Of course,
SNiFF+ offers a variety of graphical tools, such as a class browser, a debugger,
and more.</P>
<P>More information on the SNiFF+ family of products, along with downloadable evaluation
software, can be found on TakeFive's Web site at <A HREF="http://www.takefive.com/products.htm"><TT>http://www.takefive.com/products.htm</TT></A>.
<H3><A NAME="Heading26"></A><FONT COLOR="#000077">TRW's Universal Network Architecture
Services (UNAS)'</FONT></H3>
<P>TRW's Universal Network Architecture Services (UNAS) is a development tool combined
with a CORBA ORB, supporting some beyond-CORBA features such as object monitoring
and control, performance evaluation and tuning, and fault tolerance. UNAS also supports
the CORBA Naming Service and SNMP (Simple Network Management Protocol) management.
Also supported are the C++ and Ada languages, SunOS, Solaris, HP-UX, AIX, IRIX, Digital
UNIX, OpenVMS, DEC CMW, ULTRIX, Rational Apex, Rational R1000, SCO UNIX, and Windows
NT platforms.</P>

<P>More information on UNAS is available at TRW's Web site at <TT>http://www.trw.com/unas/</TT><A
HREF="http://www.trw.com/unas/"><TT>http://www.trw.com/unas/</TT></A>.
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