Software Architecture Documentation (SAD)

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Primary Presentation

Informal Notation
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Visio file

UML
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soapatterns.org notation
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Element Catalog

Context Diagram

N/A

Variability Guide

Configurability of data access

To configure data storage such that it supports different database vendors, we don't want to use any SQL statements in our queries that use vendor specific syntax and can potentially hinder migrating databases. We also use the DAO pattern to abstract away clients from accessing data directly.

Email communication

All email communication parameters (hostname, ports and protocol) should be configurable outside the code via a configuration file. The parameters are read at load time.

Rationale

  • We have chosen a Service Oriented Architecture for the Adventure Builder because we desire a high degree of interoperability between internal and external entities in the system. This gives us a great deal of flexibility in terms of implementation platforms.
    • For example, the Airline Provider component may be implemented using Java, PHP, .NET, IBM CICS or any other technology that supports SOAP web services.
    • Internally, it's possible, for example, to reimplement and deploy Consumer Website using .NET. OPC doesn't have to change because the SOAP Web services communication allows such level of interoperability.
  • We have also a clear separation between the user interface and the business logic. The Consumer Website (user interface) and OPC (business logic) are two separate applications that together implement the functionality described in the System Overview.
  • We chose to implement the service registry using a simple data repository because of ease of implementation. Creating a UDDI registry was an alternative that was rejected because it would bring increased complexity with no apparent benefit, given that the repository is only queried internally (using a standard format is more relevant when the registry will be accessed by external players).

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