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Reference Documentation: Why does not exist an XML configuration version for @Async? [SPR-14164] #18736

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spring-issuemaster opened this issue Apr 13, 2016 · 1 comment

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@spring-issuemaster spring-issuemaster commented Apr 13, 2016

Manuel Jordan opened SPR-14164 and commented

I am doing some experiments about tasks and scheduling

After to read all this (my following content): consider include the explanation in the Reference documentation.

Taking in consideration first approach to declare a bean in Spring was with XML, later with annotations (@Component, @Service etc) and finally with JavaConfig.

I did realise about the following:

If we have @Scheduled, we have the XML version too such as:

<task:scheduled-tasks scheduler="myScheduler">
    <task:scheduled ref="beanA" method="methodA" fixed-delay="5000" initial-delay="1000"/>
    <task:scheduled ref="beanB" method="methodB" fixed-rate="5000"/>
    <task:scheduled ref="beanC" method="methodC" cron="*/5 * * * * MON-FRI"/>
</task:scheduled-tasks>

And if we have @Async, why is not available an XML equivalent configuration?
Perhaps, something like

<task:async ref="beanA" method="methodA" />

It thinking if the developer does not want apply @Scheduled, how he can do the same approach for @Async?

Perhaps we have a .class or .jar file and we want apply Async support for a POJO where
the .java class is not available

I already have read the javadoc for @Async and reference documentation 33. Task Execution and Scheduling. There is no explanation about this behaviour

I am OK with these two annotations, but just wondered why does not exist for @Async the XML equivalent configuration such as @Scheduled.

Thanks


Affects: 4.2 GA, 4.2.3, 4.3 RC1

Backported to: 4.2.7

@spring-issuemaster
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@spring-issuemaster spring-issuemaster commented Apr 15, 2016

Manuel Jordan commented

Even if exists a valid explanation, just curious if can enhanced the XML schemas to support something like

<task:async ref="beanA" method="methodA" />

I know Java Config and Spring Boot are available. But again, in case the .java file is not available (only .class) we can work around through XML

Let me know if I should create a new JIRA request.

Thanks

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