AsyncAnnotationBeanPostProcessor could find TaskExecutor by type/name [SPR-13248]

[spring-projects-issues]

Juergen Hoeller opened SPR-13248 and commented

Along the lines of #17827, AsyncAnnotationBeanPostProcessor could find a TaskExecutor bean by type and/or name in the context, avoiding the need to implement AsyncConfigurer for that purpose.

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Issue Links:

• ScheduledAnnotationBeanPostProcessor should fall back to default TaskScheduler by name [SPR-13236] #17827 ScheduledAnnotationBeanPostProcessor should fall back to default TaskScheduler by name
• Regression: AsyncAnnotationBeanPostProcessor fails on startup when encountering ambiguous TaskExecutor beans [SPR-13720] #18293 Regression: AsyncAnnotationBeanPostProcessor fails on startup when encountering ambiguous TaskExecutor beans
• Regression: Early instantiation of a bean prevents proxying for @Async in 4.2.x but works in 4.1.x [SPR-14030] #18602 Regression: Early instantiation of a bean prevents proxying for @Async in 4.2.x but works in 4.1.x
• Consistently accept "taskExecutor" bean of type Executor (as stated in @EnableAsync's javadoc) [SPR-15566] #20125 Consistently accept "taskExecutor" bean of type Executor (as stated in @EnableAsync's javadoc)
• SchedulingConfigurer's ScheduledTaskRegistrar should reliably shut down before TaskScheduler [SPR-15067] #19633 SchedulingConfigurer's ScheduledTaskRegistrar should reliably shut down before TaskScheduler

Referenced from: commits c3e57dd

[spring-projects-issues]

Juergen Hoeller commented

This turns out to be easy enough, so I've rolled it in for 4.2 GA still.

Note that we search for a TaskExecutor bean... not a plain Executor since that would match with ScheduledExecutorService as well, which is unusable for our purposes here. TaskExecutor is more clearly designed for it and clearly differentiated from scheduler types. And we fall back to a bean named "taskExecutor", if any, along the lines of #17827.

Juergen