io.micronaut.context.annotation.Primary Maven / Gradle / Ivy
/*
* Copyright 2017-2020 original 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 io.micronaut.context.annotation;
import jakarta.inject.Qualifier;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
/**
* A {@link Qualifier} that indicates that this bean is the primary bean that should be selected in the case of
* multiple possible interface implementations.
*
* Note that if multiple primary beans are found then a {@link io.micronaut.context.exceptions.NonUniqueBeanException} can still occur.
*
* @author Graeme Rocher
* @see Qualifier @Qualifier
*/
@Qualifier
@Documented
@Retention(RUNTIME)
public @interface Primary {
/**
* Qualified name.
* @since 3.5.1
*/
String NAME = Primary.class.getName();
/**
* The simple name of this annotation.
*/
String SIMPLE_NAME = Primary.class.getSimpleName();
}