spring EmbeddedValueResolutionSupport 源码
spring EmbeddedValueResolutionSupport 代码
文件路径：/spring-context/src/main/java/org/springframework/context/support/EmbeddedValueResolutionSupport.java
/*
* Copyright 2002-2017 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.context.support;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.lang.Nullable;
import org.springframework.util.StringValueResolver;
/**
* Convenient base class for components with a need for embedded value resolution
* (i.e. {@link org.springframework.context.EmbeddedValueResolverAware} consumers).
*
* @author Juergen Hoeller
* @since 4.1
*/
public class EmbeddedValueResolutionSupport implements EmbeddedValueResolverAware {
@Nullable
private StringValueResolver embeddedValueResolver;
@Override
public void setEmbeddedValueResolver(StringValueResolver resolver) {
this.embeddedValueResolver = resolver;
}
/**
* Resolve the given embedded value through this instance's {@link StringValueResolver}.
* @param value the value to resolve
* @return the resolved value, or always the original value if no resolver is available
* @see #setEmbeddedValueResolver
*/
@Nullable
protected String resolveEmbeddedValue(String value) {
return (this.embeddedValueResolver != null ? this.embeddedValueResolver.resolveStringValue(value) : value);
}
}
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