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Service qualifiers
An application communicates its quality of service (QoS) needs to the runtime environment by specifying service qualifiers. They govern the interaction between a service client and a target service.
Qualifiers can be specified on service component references, interfaces, and implementations. Because declaration of the QoS values are external to an implementation, you can change these values without changing the implementation. You can also set them differently when several instances of the same implementation are used in different contexts.
The following list describes the categories of qualifiers:
- Transaction
- Rules for the type of transaction
- Activity session
- Rules for joining the active session
- Security
- Rules for permission
- Asynchronous reliability
- Rules for asynchronous message delivery
Related concepts:
Service components
Service data objects
Modules
Imports and exports
Service implementation types