Add @Bean condition based on a SpEL condition [SPR-11750]

[spring-projects-issues]

Bruce Brouwer opened SPR-11750 and commented

It would be nice to have a generic condition that enables beans based upon the result of a SpEL expression. This is similar to #16007, but rather than activating a whole profile, this would activate individual beans. I would like to be able to do something like this (I'm not particularly keen on the names I picked):

@EnabledWhen("#{ systemProperties['a'] }")
public MyBean myBean() {
  return new MyBean();
}

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Issue Links:

• Adding ConditionalOnProperty to spring-core [SPR-13244] #17835 Adding ConditionalOnProperty to spring-core

[spring-projects-issues]

Stéphane Nicoll commented

Such feature already exists in boot, check org.springframework.boot.autoconfigure.condition.ConditionalOnExpression

[spring-projects-issues]

Bruce Brouwer commented

It seems like such a generally useful feature that it would be nice to have it in spring-context

[spring-projects-issues]

Bruce Brouwer commented

I've pretty much switched over to Spring Boot, so feel free to close this issue.