Download Advanced CORBA Programming with C++ by Michi Henning PDF

By Michi Henning

Written for the skilled C++ developer dealing with real-world CORBA for the 1st time, complicated CORBA Programming with C++ is an invaluable advisor to present day hottest regular for allotted computing.After a brief travel of CORBA fundamentals, the authors leap correct in with a minimal skeleton software written in C++. From there, they supply actually large insurance of CORBA IDL, in addition to many guidance for utilizing IDL information varieties in C++. (They conceal complex good points comparable to any, TypeCode, and DynAny later within the book.).Next the publication unveils its pattern software - a dispensed weather keep an eye on procedure. fabric at the moveable item Adapter and the article lifestyles Cycle, together with rubbish assortment suggestions, rounds out this part. extra chapters learn the main points of item Request agents (ORBs), together with web Inter-ORB Protocol (IIOP), repositories, and binding. The authors additionally current CORBA's integrated APIs for Naming, buying and selling, and occasion providers (including asynchronous occasion handling), that's most beneficial as reference material.Final sections study options for larger scalability, together with multithreading and optimizing community site visitors for CORBA items. The authors supply a number of brief excerpts of C++ code, even though it has to be acknowledged that a lot of this publication is reference fabric instead of a hands-on programming educational.

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1, CORBA contained specifications only for the Basic Object Adapter (BOA). The BOA was the original CORBA object adapter, and its designers felt that it would suffice for the majority of applications, with other object adapters filling only niche roles. However, CORBA did not evolve as expected because of the following problems with the BOA specification. The BOA specification did not account for the fact that, because of their need to support servants, object adapters tend to be language-specific.

It follows that an object reference is not the same as an object's identity. 2. References can be nil. CORBA defines a distinguished nil value for object references. A nil reference points nowhere and is analogous to a C++ null pointer. Nil references are useful for conveying "not found" or "not there" semantics. For example, an operation can return a nil reference to indicate that a client's search for an object did not locate a matching instance. Nil references can also be used to implement optional reference parameters.

Protocol independence The client does not know what communication protocol is used to send messages. If several protocols are available to communicate with the server, the ORB transparently selects a protocol at run time. Transport independence The client is ignorant of the transport and data link layer used to transmit messages. ORBs can transparently use various networking technologies such as Ethernet, ATM, token ring, or serial lines. 1 Object Reference Semantics Object references are analogous to C++ class instance pointers but can denote objects implemented in different processes (possibly on other machines) as well as objects implemented in the client's own address space.

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