org.springframework.boot.autoconfigure.condition

Annotation Type ConditionalOnExpression

@Retention(value=RUNTIME)
 @Target(value={TYPE,METHOD})
 @Documented
 @Conditional(value=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

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
String	value The SpEL expression to evaluate.

Element Detail

value

public abstract String value

The SpEL expression to evaluate. Expression should return true if the condition passes or false if it fails.

Returns:

the SpEL expression

Default:

"true"