infra.beans.factory.config.AutowiredPropertyMarker 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.factory.config;
import java.io.Serial;
import java.io.Serializable;
import infra.beans.factory.support.BeanDefinitionBuilder;
/**
* Simple marker class for an individually autowired property value, to be added
* to {@link BeanDefinition#getPropertyValues()} for a specific bean property.
*
* At runtime, this will be replaced with a {@link DependencyDescriptor}
* for the corresponding bean property's write method, eventually to be resolved
* through a {@link AutowireCapableBeanFactory#resolveDependency} step.
*
* @author Juergen Hoeller
* @author Harry Yang
* @see AutowireCapableBeanFactory#resolveDependency
* @see BeanDefinition#getPropertyValues()
* @see BeanDefinitionBuilder#addAutowiredProperty
* @since 4.0 2022/3/6 21:15
*/
public final class AutowiredPropertyMarker implements Serializable {
@Serial
private static final long serialVersionUID = 1L;
/**
* The canonical instance for the autowired marker value.
*/
public static final Object INSTANCE = new AutowiredPropertyMarker();
private AutowiredPropertyMarker() {
}
@Serial
private Object readResolve() {
return INSTANCE;
}
@Override
public int hashCode() {
return AutowiredPropertyMarker.class.hashCode();
}
@Override
public String toString() {
return "(autowired)";
}
}