infra.beans.factory.support.AutowireCandidateQualifier 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.support;
import infra.beans.BeanMetadataAttributeAccessor;
import infra.beans.factory.annotation.Qualifier;
import infra.lang.Assert;
/**
* Qualifier for resolving autowire candidates. A bean definition that
* includes one or more such qualifiers enables fine-grained matching
* against annotations on a field or parameter to be autowired.
*
* @author Mark Fisher
* @author Juergen Hoeller
* @author Harry Yang
* @see Qualifier
* @since 4.0 2021/12/22 23:33
*/
@SuppressWarnings("serial")
public class AutowireCandidateQualifier extends BeanMetadataAttributeAccessor {
/**
* The name of the key used to store the value.
*/
public static final String VALUE_KEY = "value";
private final String typeName;
/**
* Construct a qualifier to match against an annotation of the
* given type.
*
* @param type the annotation type
*/
public AutowireCandidateQualifier(Class type) {
this(type.getName());
}
/**
* Construct a qualifier to match against an annotation of the
* given type name.
* The type name may match the fully-qualified class name of
* the annotation or the short class name (without the package).
*
* @param typeName the name of the annotation type
*/
public AutowireCandidateQualifier(String typeName) {
Assert.notNull(typeName, "Type name is required");
this.typeName = typeName;
}
/**
* Construct a qualifier to match against an annotation of the
* given type whose {@code value} attribute also matches
* the specified value.
*
* @param type the annotation type
* @param value the annotation value to match
*/
public AutowireCandidateQualifier(Class type, Object value) {
this(type.getName(), value);
}
/**
* Construct a qualifier to match against an annotation of the
* given type name whose {@code value} attribute also matches
* the specified value.
*
The type name may match the fully-qualified class name of
* the annotation or the short class name (without the package).
*
* @param typeName the name of the annotation type
* @param value the annotation value to match
*/
public AutowireCandidateQualifier(String typeName, Object value) {
Assert.notNull(typeName, "Type name is required");
this.typeName = typeName;
setAttribute(VALUE_KEY, value);
}
/**
* Retrieve the type name. This value will be the same as the
* type name provided to the constructor or the fully-qualified
* class name if a Class instance was provided to the constructor.
*/
public String getTypeName() {
return this.typeName;
}
}