By Michi Henning, Steve Vinoski
Here's the CORBA ebook that each C++ software program engineer has been awaiting. complicated CORBA(r) Programming with C++ offers designers and builders with the instruments required to appreciate CORBA know-how on the architectural, layout, and resource code degrees. This e-book deals hands-on causes for construction effective purposes, in addition to lucid examples that offer useful suggestion on keeping off high priced blunders. With this ebook as a consultant, programmers will locate the aid they should effectively adopt industrial-strength CORBA improvement tasks.
The content material is systematically prepared and awarded so the ebook can be used as either an educational and a reference. the wealthy instance courses during this definitive textual content exhibit CORBA builders the way to write clearer code that's extra maintainable, moveable, and effective. The authors' specific assurance of the IDL-to-C++ mapping strikes past the mechanics of the APIs to debate subject matters reminiscent of capability pitfalls and potency. An in-depth presentation of the hot transportable item Adapter (POA) explains easy methods to benefit from its quite a few gains to create scalable and high-performance servers. furthermore, unique dialogue of complex issues, corresponding to rubbish assortment and multithreading, offers builders with the data they should write advertisement purposes.
In-depth assurance of IDL, together with universal idioms and layout trade-offs entire and certain causes of the existence Cycle, Naming, buying and selling, and occasion companies dialogue of IIOP and implementation repositories perception into the dynamic features of CORBA, resembling dynamic typing and the recent DynAny interfaces recommendation on settling on acceptable program architectures and designs exact, transportable, and vendor-independent resource code
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Additional resources for Advanced CORBA (R) Programming with C++
3 Language Mappings Because OMG IDL is a declarative language, it cannot be used to write actual applications. It provides no control constructs or variables, so it cannot be compiled or interpreted into an executable program. It is suitable only for declaring interfaces for objects and defining the data types used to communicate with objects. Language mappings specify how IDL is translated into different programming languages. For each IDL construct, a language mapping defines which facilities of the programming language are used to make the construct available to applications.
A Time object has only a single operation, get_gmt. Clients invoke this operation to obtain the current time in the Greenwich time zone. The operation returns the current time as a structure of type TimeOfDay, which contains the current hour, minute, and second. idl, you must compile it. The CORBA specification standardizes neither how to invoke the IDL compiler nor what the names of the generated files should be, so the example that follows may need some adjustment for your particular ORB. However, the basic idea is the same for all ORBs with a C++ language mapping.
ORB interoperability also requires standardized object reference formats. Object references are opaque to applications, but they contain information that ORBs need in order to establish communications between clients and target objects. The standard object reference format, called the Interoperable Object Reference (IOR), is flexible enough to store information for almost any inter-ORB protocol imaginable. An IOR identifies one or more supported protocols and, for each protocol, contains information specific to that protocol.