Annotation Interface ConditionalOnExpression
@Retention(RUNTIME)
@Target({TYPE,METHOD})
@Documented
@Conditional(org.springframework.boot.autoconfigure.condition.OnExpressionCondition.class)
public @interface ConditionalOnExpression
Configuration annotation for a conditional element that depends on the value of a SpEL
expression.
Referencing a bean in the expression will cause that bean to be initialized very early in context refresh processing. As a result, the bean won't be eligible for post-processing (such as configuration properties binding) and its state may be incomplete.
- Since:
- 1.0.0
- Author:
- Dave Syer
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Optional Element Summary
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Element Details
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value
String valueThe SpEL expression to evaluate. Expression should returntrue
if the condition passes orfalse
if it fails.- Returns:
- the SpEL expression
- Default:
- "true"
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