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package org.springframework.context.annotation;

A Condition that offers more fine-grained control when used with @Configuration. Allows certain conditions to adapt when they match based on the configuration phase. For example, a condition that checks if a bean has already been registered might choose to only be evaluated during the REGISTER_BEAN ConfigurationPhase.
Author:Phillip Webb
See Also:
Since:4.0
/** * A {@link Condition} that offers more fine-grained control when used with * {@code @Configuration}. Allows certain conditions to adapt when they match * based on the configuration phase. For example, a condition that checks if a bean * has already been registered might choose to only be evaluated during the * {@link ConfigurationPhase#REGISTER_BEAN REGISTER_BEAN} {@link ConfigurationPhase}. * * @author Phillip Webb * @since 4.0 * @see Configuration */
public interface ConfigurationCondition extends Condition {
Return the ConfigurationPhase in which the condition should be evaluated.
/** * Return the {@link ConfigurationPhase} in which the condition should be evaluated. */
ConfigurationPhase getConfigurationPhase();
The various configuration phases where the condition could be evaluated.
/** * The various configuration phases where the condition could be evaluated. */
enum ConfigurationPhase {
The Condition should be evaluated as a @Configuration class is being parsed.

If the condition does not match at this point, the @Configuration class will not be added.

/** * The {@link Condition} should be evaluated as a {@code @Configuration} * class is being parsed. * <p>If the condition does not match at this point, the {@code @Configuration} * class will not be added. */
PARSE_CONFIGURATION,
The Condition should be evaluated when adding a regular (non @Configuration) bean. The condition will not prevent @Configuration classes from being added.

At the time that the condition is evaluated, all @Configuration classes will have been parsed.

/** * The {@link Condition} should be evaluated when adding a regular * (non {@code @Configuration}) bean. The condition will not prevent * {@code @Configuration} classes from being added. * <p>At the time that the condition is evaluated, all {@code @Configuration} * classes will have been parsed. */
REGISTER_BEAN } }