infra.beans.BeanMetadataAttribute Maven / Gradle / Ivy
/*
* Copyright 2017 - 2024 the original author or authors.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [https://www.gnu.org/licenses/]
*/
package infra.beans;
import infra.lang.Assert;
import infra.lang.Nullable;
import infra.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
* @author Harry Yang
* @since 4.0
* @since 4.0 2022/3/7 12:30
*/
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 is required");
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 otherMa)) {
return false;
}
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: name='%s'; value=%s".formatted(this.name, this.value);
}
}