spring Location 源码
spring Location 代码
文件路径：/spring-beans/src/main/java/org/springframework/beans/factory/parsing/Location.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.beans.factory.parsing;
import org.springframework.core.io.Resource;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Class that models an arbitrary location in a {@link Resource resource}.
*
* <p>Typically used to track the location of problematic or erroneous
* metadata in XML configuration files. For example, a
* {@link #getSource() source} location might be 'The bean defined on
* line 76 of beans.properties has an invalid Class'; another source might
* be the actual DOM Element from a parsed XML {@link org.w3c.dom.Document};
* or the source object might simply be {@code null}.
*
* @author Rob Harrop
* @since 2.0
*/
public class Location {
private final Resource resource;
@Nullable
private final Object source;
/**
* Create a new instance of the {@link Location} class.
* @param resource the resource with which this location is associated
*/
public Location(Resource resource) {
this(resource, null);
}
/**
* Create a new instance of the {@link Location} class.
* @param resource the resource with which this location is associated
* @param source the actual location within the associated resource
* (may be {@code null})
*/
public Location(Resource resource, @Nullable Object source) {
Assert.notNull(resource, "Resource must not be null");
this.resource = resource;
this.source = source;
}
/**
* Get the resource with which this location is associated.
*/
public Resource getResource() {
return this.resource;
}
/**
* Get the actual location within the associated {@link #getResource() resource}
* (may be {@code null}).
* <p>See the {@link Location class level javadoc for this class} for examples
* of what the actual type of the returned object may be.
*/
@Nullable
public Object getSource() {
return this.source;
}
}
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