spring CachingConfigurationPropertySource 源码
springboot CachingConfigurationPropertySource 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/source/CachingConfigurationPropertySource.java
/*
* Copyright 2012-2022 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.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.context.properties.source;
/**
* Interface used to indicate that a {@link ConfigurationPropertySource} supports
* {@link ConfigurationPropertyCaching}.
*
* @author Phillip Webb
*/
interface CachingConfigurationPropertySource {
/**
* Return {@link ConfigurationPropertyCaching} for this source.
* @return source caching
*/
ConfigurationPropertyCaching getCaching();
/**
* Find {@link ConfigurationPropertyCaching} for the given source.
* @param source the configuration property source
* @return a {@link ConfigurationPropertyCaching} instance or {@code null} if the
* source does not support caching.
*/
static ConfigurationPropertyCaching find(ConfigurationPropertySource source) {
if (source instanceof CachingConfigurationPropertySource cachingSource) {
return cachingSource.getCaching();
}
return null;
}
}
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