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Table 3-4 provides an overview of the relationship between the previous Process-focused Application Integration patterns and the revised Process-focused Application Integration patterns presented in this chapter. The differences between the old and new definitions are summarized as follows:
Direct Connection is retained for application coordinated requests.
Transactional is now a quality of service. Transactionality may apply to all of these patterns, so it is applied as a quality of service rather than being a separate pattern.
Aggregator/Broker are combined into Broker for broker coordinated requests.
Manage Process is split into Serial Process and Parallel Process for process managed coordinated requests.
The read-only versus read/write classification used with old patterns is not used with the new patterns, since:
For Transactional and Managed Process, read-only is not applicable
For Direct Connection, the same pattern applies in both cases
For Aggregator/Broker, the observed patterns are identical
Old Pattern | New Pattern | ||
---|---|---|---|
Information Request (R/O) | Processing Request (R/W) | ||
Application Coordinated | Direct Connection | Direct Connection | Same |
Transactional Coordinated | Not applicable | Transactional | Now a Quality of Service |
Broker Coordinated | Aggregator | Broker | Broker |
Process Managed Coordinated | Not applicable | Managed Process | Split into:
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