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/*
* 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;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Holder for a key-value style attribute that is part of a bean definition.
* Keeps track of the definition source in addition to the key-value pair.
*
* @author Juergen Hoeller
* @since 2.5
*/
public class BeanMetadataAttribute implements BeanMetadataElement {
private final String name;
@Nullable
private final Object value;
@Nullable
private Object source;
/**
* Create a new AttributeValue instance.
* @param name the name of the attribute (never {@code null})
* @param value the value of the attribute (possibly before type conversion)
*/
public BeanMetadataAttribute(String name, @Nullable Object value) {
Assert.notNull(name, "Name must not be null");
this.name = name;
this.value = value;
}
/**
* Return the name of the attribute.
*/
public String getName() {
return this.name;
}
/**
* Return the value of the attribute.
*/
@Nullable
public Object getValue() {
return this.value;
}
/**
* Set the configuration source {@code Object} for this metadata element.
* The exact type of the object will depend on the configuration mechanism used.
*/
public void setSource(@Nullable Object source) {
this.source = source;
}
@Override
@Nullable
public Object getSource() {
return this.source;
}
@Override
public boolean equals(@Nullable Object other) {
if (this == other) {
return true;
}
if (!(other instanceof BeanMetadataAttribute)) {
return false;
}
BeanMetadataAttribute otherMa = (BeanMetadataAttribute) other;
return (this.name.equals(otherMa.name) &&
ObjectUtils.nullSafeEquals(this.value, otherMa.value) &&
ObjectUtils.nullSafeEquals(this.source, otherMa.source));
}
@Override
public int hashCode() {
return this.name.hashCode() * 29 + ObjectUtils.nullSafeHashCode(this.value);
}
@Override
public String toString() {
return "metadata attribute '" + this.name + "'";
}
}