com.livk.commons.selector.SpringAbstractImportSelector Maven / Gradle / Ivy
/*
* Copyright 2021-2024 spring-boot-extension 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 com.livk.commons.selector;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.AutoConfigurationImportSelector;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.context.annotation.ImportCandidates;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DeferredImportSelector;
import org.springframework.core.GenericTypeResolver;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.util.Assert;
import java.lang.annotation.Annotation;
import java.util.Collections;
import java.util.List;
import java.util.Set;
/**
* 导入普通的{@link Configuration}或者{@link AutoConfiguration}
*
* 具备识别 {@link AutoConfigureAfter}和{@link AutoConfigureBefore}的能力
*
* 功效大致与 {@link AutoConfigurationImportSelector}一样，缺失排除自动装配的能力
*
* @param 注解类型
* @author livk
* @see AutoConfigurationImportSelector
* @see org.springframework.boot.autoconfigure.EnableAutoConfiguration
*/
public abstract class SpringAbstractImportSelector extends AutoConfigurationImportSelector
implements DeferredImportSelector {
/**
* The Annotation class.
*/
private final Class annotationClass;
@SuppressWarnings("unchecked")
protected SpringAbstractImportSelector() {
this.annotationClass = (Class) GenericTypeResolver.resolveTypeArgument(this.getClass(),
SpringAbstractImportSelector.class);
}
@Override
protected Class getAnnotationClass() {
return annotationClass;
}
@Override
protected List getCandidateConfigurations(AnnotationMetadata metadata, AnnotationAttributes attributes) {
Assert.notNull(annotationClass, "annotation Class not be null");
List configurations = ImportCandidates.load(annotationClass, getBeanClassLoader()).getCandidates();
Assert.notEmpty(configurations,
"No auto configuration classes found in META-INF/spring/" + annotationClass.getName()
+ ".imports. If you are using a custom packaging, make sure that file is correct.");
return configurations;
}
@Override
protected List getExcludeAutoConfigurationsProperty() {
return Collections.emptyList();
}
@Override
protected Set getExclusions(AnnotationMetadata metadata, AnnotationAttributes attributes) {
return Collections.emptySet();
}
}