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Polish class conditions documentation

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Closes gh-15578
This commit is contained in:
Stephane Nicoll
2018-12-31 10:36:02 +01:00
parent 0a0568867a
commit be161b23cb
2 changed files with 42 additions and 7 deletions
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8
spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnClass.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2012-2017 the original author or authors.
* Copyright 2012-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -26,6 +26,12 @@ import org.springframework.context.annotation.Conditional;
/**
* {@link Conditional} that only matches when the specified classes are on the classpath.
* <p>
* A {@link #value()} can be safely specified on {@code @Configuration} classes as the
* annotation metadata is parsed by using ASM before the class is loaded. Extra care is
* required when placed on {@code @Bean} methods, consider isolating the condition in a
* separate {@code Configuration} class, in particular if the return type of the method
* matches the {@link #value target of the condition}.
*
* @author Phillip Webb
*/