Um modelo para a implantação de Federação de Trades

AUTOR(ES)

Luiz Augusto de PaulaLima Junior

DATA DE PUBLICAÇÃO

1994

RESUMO

This work describes a proposal of a TRADER which is the computational object that receives service offers from other objects (called "servers") storing them in a data base. When another object (a "client") needs a computational service, it can ask the trader about the service, and then the trader may return the "address" of a server which offers that service. Through dynamic binding the client can access the service at the server s interface. Ali of these concepts are introduced in the Chapter 1 besides the ISO Reference Model for Open Distributed Processing (RM-ODP). In Chapter 2 the trader is described in detail using the five view-points defined in the RM-ODP. The grouping of traders creating Federations is discussed in Chapter 3, presenting the advantages and the details of this organization, again using the five view-points of the RM-ODP. In Chapter 4 mechanisms and models for the construction of federated traders are presented. A theoretic model for the implementation of a trader including all the functionality neccessary for federation and federated operations is also proposed in this chapter. Furthermore, the details of the implementation of the prototype of a trader are discussed. The prototype was built as a part of the MULTIWARE platform which is in development at UNICAMP. The main algorithms and data structures are also commented in Chapter 4. At the end of the chapter, a comparative analysis of related works is made. At last, in Chapter 5, the maim difficulties found during the development of the project are raised and the main contributions of this current work and possible future extensions are commented

ASSUNTO(S)

processamento eletronico de dados - processamento distribuido - processamento paralelo (computadores) - algoritmos

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