spring FilteredConfigurationPropertiesSource 源码
springboot FilteredConfigurationPropertiesSource 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/source/FilteredConfigurationPropertiesSource.java
/*
* Copyright 2012-2019 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;
import java.util.function.Predicate;
import org.springframework.util.Assert;
/**
* A filtered {@link ConfigurationPropertySource}.
*
* @author Phillip Webb
* @author Madhura Bhave
*/
class FilteredConfigurationPropertiesSource implements ConfigurationPropertySource {
private final ConfigurationPropertySource source;
private final Predicate<ConfigurationPropertyName> filter;
FilteredConfigurationPropertiesSource(ConfigurationPropertySource source,
Predicate<ConfigurationPropertyName> filter) {
Assert.notNull(source, "Source must not be null");
Assert.notNull(filter, "Filter must not be null");
this.source = source;
this.filter = filter;
}
@Override
public ConfigurationProperty getConfigurationProperty(ConfigurationPropertyName name) {
boolean filtered = getFilter().test(name);
return filtered ? getSource().getConfigurationProperty(name) : null;
}
@Override
public ConfigurationPropertyState containsDescendantOf(ConfigurationPropertyName name) {
ConfigurationPropertyState result = this.source.containsDescendantOf(name);
if (result == ConfigurationPropertyState.PRESENT) {
// We can't be sure a contained descendant won't be filtered
return ConfigurationPropertyState.UNKNOWN;
}
return result;
}
@Override
public Object getUnderlyingSource() {
return this.source.getUnderlyingSource();
}
protected ConfigurationPropertySource getSource() {
return this.source;
}
protected Predicate<ConfigurationPropertyName> getFilter() {
return this.filter;
}
@Override
public String toString() {
return this.source.toString() + " (filtered)";
}
}
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- 本文标签： Spring Boot Java Spring
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