/*
 * Copyright 2012-2020 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.boot.context.properties;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.core.Conventions;
import org.springframework.core.annotation.MergedAnnotation;

/**
 * {@link BeanDefinition} that is used for registering
 * {@link ConfigurationProperties @ConfigurationProperties} beans.
 *
 * @author Phillip Webb
 */
class ConfigurationPropertiesBeanDefinition extends GenericBeanDefinition {

	private static final String ANNOTATION_ATTRIBUTE = Conventions
			.getQualifiedAttributeName(ConfigurationPropertiesBeanDefinition.class, "annotation");

	ConfigurationPropertiesBeanDefinition(Class<?> beanClass, MergedAnnotation<ConfigurationProperties> annotation) {
		setBeanClass(beanClass);
		setAttribute(ANNOTATION_ATTRIBUTE, annotation);
	}

	@SuppressWarnings("unchecked")
	static MergedAnnotation<ConfigurationProperties> getAnnotation(BeanDefinition beanDefinition) {
		MergedAnnotation<ConfigurationProperties> annotation = (beanDefinition != null)
				? (MergedAnnotation<ConfigurationProperties>) beanDefinition.getAttribute(ANNOTATION_ATTRIBUTE) : null;
		return (annotation != null) ? annotation : MergedAnnotation.missing();
	}

}
