Don't use @ComponentScan for default packages
Update the 'default' package used for @Entity and Repository scanning to be the package of the class annotated with @EnableAutoConfiguration rather than using @ComponentScan. This allows JPA and Spring Data to be used without requiring component scanning and also removes the confusion that could arise from reusing the @ComponentScan annotation, which already has well defined semantics. Fixes gh-200pull/234/head
Phillip Webb
11 years ago
parent
6c255e5785
commit
f103a976f8
@ -0,0 +1,104 @@
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/*
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* Copyright 2012-2014 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.autoconfigure;
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import java.util.Collections;
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import java.util.List;
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import org.springframework.beans.factory.BeanFactory;
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import org.springframework.beans.factory.NoSuchBeanDefinitionException;
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import org.springframework.beans.factory.support.BeanDefinitionRegistry;
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import org.springframework.beans.factory.support.GenericBeanDefinition;
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import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
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import org.springframework.core.Ordered;
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import org.springframework.core.annotation.Order;
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import org.springframework.core.type.AnnotationMetadata;
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import org.springframework.util.ClassUtils;
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/**
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* Class for storing auto-configuration packages for reference later (e.g. by JPA entity
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* scanner).
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*
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* @author Phillip Webb
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* @author Dave Syer
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*/
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public abstract class AutoConfigurationPackages {
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private static final String BEAN = AutoConfigurationPackages.class.getName();
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/**
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* Return the auto-configuration base packages for the given bean factory
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* @param beanFactory the source bean factory
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* @return a list of auto-configuration packages
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* @throws IllegalStateException if auto-configuration is not enabled
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*/
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public static List<String> get(BeanFactory beanFactory) {
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// Currently we only store a single base package, but we return a list to
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// allow this to change in the future if needed
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try {
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return Collections.singletonList(beanFactory.getBean(BEAN, BasePackage.class)
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.toString());
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}
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catch (NoSuchBeanDefinitionException ex) {
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throw new IllegalStateException(
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"Unable to retrieve @EnableAutoConfiguration base packages");
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}
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}
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static void set(BeanDefinitionRegistry registry, String packageName) {
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GenericBeanDefinition beanDefinition = new GenericBeanDefinition();
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beanDefinition.setBeanClass(BasePackage.class);
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beanDefinition.getConstructorArgumentValues().addIndexedArgumentValue(0,
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packageName);
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registry.registerBeanDefinition(BEAN, beanDefinition);
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}
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/**
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* {@link ImportBeanDefinitionRegistrar} to store the base package from the importing
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* configuration.
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*/
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@Order(Ordered.HIGHEST_PRECEDENCE)
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static class Registrar implements ImportBeanDefinitionRegistrar {
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@Override
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public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata,
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BeanDefinitionRegistry registry) {
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set(registry,
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ClassUtils.getPackageName(importingClassMetadata.getClassName()));
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}
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}
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/**
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* Holder for the base package.
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*/
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final static class BasePackage {
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private final String name;
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public BasePackage(String name) {
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this.name = name;
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}
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@Override
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public String toString() {
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return this.name;
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}
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}
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}
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@ -1,71 +0,0 @@
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/*
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* Copyright 2012-2013 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.autoconfigure;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import org.springframework.beans.factory.BeanFactory;
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import org.springframework.beans.factory.NoSuchBeanDefinitionException;
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import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
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/**
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* Convenience class for storing base packages during component scan, for reference later
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* (e.g. by JPA entity scanner).
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*
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* @author Phillip Webb
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* @author Dave Syer
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*/
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public abstract class AutoConfigurationUtils {
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private static final String BASE_PACKAGES_BEAN = AutoConfigurationUtils.class
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.getName() + ".basePackages";
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private static Set<String> EXCLUDED_PACKAGES;
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static {
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Set<String> exclude = new HashSet<String>();
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exclude.add("org.springframework.data.rest.webmvc");
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EXCLUDED_PACKAGES = Collections.unmodifiableSet(exclude);
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}
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@SuppressWarnings("unchecked")
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public static List<String> getBasePackages(BeanFactory beanFactory) {
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try {
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return beanFactory.getBean(BASE_PACKAGES_BEAN, List.class);
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}
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catch (NoSuchBeanDefinitionException ex) {
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return Collections.emptyList();
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}
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}
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public static void storeBasePackages(ConfigurableListableBeanFactory beanFactory,
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List<String> basePackages) {
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if (!beanFactory.containsBean(BASE_PACKAGES_BEAN)) {
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beanFactory.registerSingleton(BASE_PACKAGES_BEAN, new ArrayList<String>());
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}
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List<String> storePackages = getBasePackages(beanFactory);
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for (String basePackage : basePackages) {
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if (!EXCLUDED_PACKAGES.contains(basePackage)
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&& !storePackages.contains(basePackage)) {
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storePackages.add(basePackage);
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}
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}
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}
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}
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@ -1,156 +0,0 @@
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/*
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* Copyright 2012-2013 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.autoconfigure;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.BeansException;
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import org.springframework.beans.factory.BeanFactory;
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import org.springframework.beans.factory.BeanFactoryAware;
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import org.springframework.beans.factory.config.BeanDefinition;
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import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
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import org.springframework.beans.factory.support.AbstractBeanDefinition;
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import org.springframework.beans.factory.support.BeanDefinitionRegistry;
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import org.springframework.cglib.proxy.Enhancer;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
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import org.springframework.core.annotation.AnnotationAttributes;
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import org.springframework.core.type.AnnotationMetadata;
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import org.springframework.core.type.StandardAnnotationMetadata;
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import org.springframework.core.type.classreading.MetadataReader;
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import org.springframework.core.type.classreading.MetadataReaderFactory;
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import org.springframework.core.type.classreading.SimpleMetadataReaderFactory;
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import org.springframework.util.ClassUtils;
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import org.springframework.util.StringUtils;
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/**
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* Helper to detect a component scan declared in the enclosing context (normally on a
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* {@code @Configuration} class). Once the component scan is detected, the base packages
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* are stored for retrieval later.
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*
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* @author Dave Syer
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* @author Phillip Webb
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* @see AutoConfigurationUtils
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*/
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public class ComponentScanDetector implements ImportBeanDefinitionRegistrar,
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BeanFactoryAware {
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private final Log logger = LogFactory.getLog(getClass());
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private BeanFactory beanFactory;
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private MetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory();
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@Override
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public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata,
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final BeanDefinitionRegistry registry) {
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storeComponentScanBasePackages();
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}
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private void storeComponentScanBasePackages() {
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if (this.beanFactory instanceof ConfigurableListableBeanFactory) {
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storeComponentScanBasePackages((ConfigurableListableBeanFactory) this.beanFactory);
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}
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else {
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if (this.logger.isWarnEnabled()) {
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this.logger
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.warn("Unable to read @ComponentScan annotations for auto-configure");
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}
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}
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}
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private void storeComponentScanBasePackages(
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ConfigurableListableBeanFactory beanFactory) {
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List<String> basePackages = new ArrayList<String>();
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for (String beanName : beanFactory.getBeanDefinitionNames()) {
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BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName);
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String[] basePackagesAttribute = (String[]) beanDefinition
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.getAttribute("componentScanBasePackages");
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if (basePackagesAttribute != null) {
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basePackages.addAll(Arrays.asList(basePackagesAttribute));
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}
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AnnotationMetadata metadata = getMetadata(beanDefinition);
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basePackages.addAll(getBasePackages(metadata));
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}
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AutoConfigurationUtils.storeBasePackages(beanFactory, basePackages);
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}
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private AnnotationMetadata getMetadata(BeanDefinition beanDefinition) {
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if (beanDefinition instanceof AbstractBeanDefinition
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&& ((AbstractBeanDefinition) beanDefinition).hasBeanClass()) {
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Class<?> beanClass = ((AbstractBeanDefinition) beanDefinition).getBeanClass();
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if (Enhancer.isEnhanced(beanClass)) {
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beanClass = beanClass.getSuperclass();
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}
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return new StandardAnnotationMetadata(beanClass, true);
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}
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String className = beanDefinition.getBeanClassName();
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if (className != null) {
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try {
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MetadataReader metadataReader = this.metadataReaderFactory
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.getMetadataReader(className);
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return metadataReader.getAnnotationMetadata();
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}
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catch (IOException ex) {
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if (this.logger.isDebugEnabled()) {
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this.logger.debug(
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"Could not find class file for introspecting @ComponentScan classes: "
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+ className, ex);
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}
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}
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}
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return null;
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}
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private List<String> getBasePackages(AnnotationMetadata metadata) {
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AnnotationAttributes attributes = AnnotationAttributes
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.fromMap((metadata == null ? null : metadata.getAnnotationAttributes(
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ComponentScan.class.getName(), true)));
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if (attributes != null) {
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List<String> basePackages = new ArrayList<String>();
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addAllHavingText(basePackages, attributes.getStringArray("value"));
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addAllHavingText(basePackages, attributes.getStringArray("basePackages"));
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for (String packageClass : attributes.getStringArray("basePackageClasses")) {
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basePackages.add(ClassUtils.getPackageName(packageClass));
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}
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if (basePackages.isEmpty()) {
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basePackages.add(ClassUtils.getPackageName(metadata.getClassName()));
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}
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return basePackages;
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}
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return Collections.emptyList();
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}
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private void addAllHavingText(List<String> list, String[] strings) {
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for (String s : strings) {
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if (StringUtils.hasText(s)) {
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list.add(s);
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}
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}
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}
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@Override
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public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
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this.beanFactory = beanFactory;
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}
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}
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@ -0,0 +1,69 @@
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/*
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* Copyright 2012-2014 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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|
* You may obtain a copy of the License at
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|
*
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|
* http://www.apache.org/licenses/LICENSE-2.0
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*
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|
* Unless required by applicable law or agreed to in writing, software
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|
* distributed under the License is distributed on an "AS IS" BASIS,
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|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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|
* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.autoconfigure;
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import java.util.Collections;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.ExpectedException;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.context.annotation.Import;
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import static org.hamcrest.Matchers.equalTo;
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import static org.junit.Assert.assertThat;
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/**
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* Tests for {@link AutoConfigurationPackages}.
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*
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* @author Phillip Webb
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*/
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@SuppressWarnings("resource")
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public class AutoConfigurationPackagesTests {
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@Rule
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public ExpectedException thrown = ExpectedException.none();
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@Test
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public void setAndGet() {
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AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
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ConfigWithRegistrar.class);
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assertThat(AutoConfigurationPackages.get(context.getBeanFactory()),
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equalTo(Collections.singletonList(getClass().getPackage().getName())));
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}
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@Test
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public void getWithoutSet() throws Exception {
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AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
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EmptyConfig.class);
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this.thrown.expect(IllegalStateException.class);
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this.thrown
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.expectMessage("Unable to retrieve @EnableAutoConfiguration base packages");
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AutoConfigurationPackages.get(context.getBeanFactory());
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}
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@Configuration
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@Import(AutoConfigurationPackages.Registrar.class)
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static class ConfigWithRegistrar {
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||||||
|
}
|
||||||
|
|
||||||
|
@Configuration
|
||||||
|
static class EmptyConfig {
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
@ -1,71 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright 2012-2013 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
|
|
||||||
*
|
|
||||||
* http://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.autoconfigure;
|
|
||||||
|
|
||||||
import java.util.Arrays;
|
|
||||||
import java.util.List;
|
|
||||||
|
|
||||||
import org.junit.Before;
|
|
||||||
import org.junit.Test;
|
|
||||||
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
|
|
||||||
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
|
|
||||||
|
|
||||||
import static org.hamcrest.Matchers.equalTo;
|
|
||||||
import static org.junit.Assert.assertThat;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Tests for {@link AutoConfigurationUtils}.
|
|
||||||
*
|
|
||||||
* @author Phillip Webb
|
|
||||||
*/
|
|
||||||
public class AutoConfigurationUtilsTests {
|
|
||||||
|
|
||||||
private ConfigurableListableBeanFactory beanFactory;
|
|
||||||
|
|
||||||
@Before
|
|
||||||
public void setup() {
|
|
||||||
this.beanFactory = new DefaultListableBeanFactory();
|
|
||||||
}
|
|
||||||
|
|
||||||
@Test
|
|
||||||
public void storeAndGetBasePackages() throws Exception {
|
|
||||||
List<String> packageList = Arrays.asList("com.mycorp.test1", "com.mycorp.test2");
|
|
||||||
AutoConfigurationUtils.storeBasePackages(this.beanFactory, packageList);
|
|
||||||
List<String> actual = AutoConfigurationUtils.getBasePackages(this.beanFactory);
|
|
||||||
assertThat(actual, equalTo(packageList));
|
|
||||||
}
|
|
||||||
|
|
||||||
@Test
|
|
||||||
public void doubleAdd() throws Exception {
|
|
||||||
List<String> list1 = Arrays.asList("com.mycorp.test1", "com.mycorp.test2");
|
|
||||||
List<String> list2 = Arrays.asList("com.mycorp.test2", "com.mycorp.test3");
|
|
||||||
AutoConfigurationUtils.storeBasePackages(this.beanFactory, list1);
|
|
||||||
AutoConfigurationUtils.storeBasePackages(this.beanFactory, list2);
|
|
||||||
List<String> actual = AutoConfigurationUtils.getBasePackages(this.beanFactory);
|
|
||||||
assertThat(actual, equalTo(Arrays.asList("com.mycorp.test1", "com.mycorp.test2",
|
|
||||||
"com.mycorp.test3")));
|
|
||||||
}
|
|
||||||
|
|
||||||
@Test
|
|
||||||
public void excludedPackages() throws Exception {
|
|
||||||
List<String> packageList = Arrays.asList("com.mycorp.test1",
|
|
||||||
"org.springframework.data.rest.webmvc");
|
|
||||||
AutoConfigurationUtils.storeBasePackages(this.beanFactory, packageList);
|
|
||||||
List<String> actual = AutoConfigurationUtils.getBasePackages(this.beanFactory);
|
|
||||||
assertThat(actual, equalTo(Arrays.asList("com.mycorp.test1")));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -0,0 +1,46 @@
|
|||||||
|
/*
|
||||||
|
* Copyright 2012-2014 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
|
||||||
|
*
|
||||||
|
* http://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.autoconfigure;
|
||||||
|
|
||||||
|
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
|
||||||
|
import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
|
||||||
|
import org.springframework.core.Ordered;
|
||||||
|
import org.springframework.core.annotation.AnnotationAttributes;
|
||||||
|
import org.springframework.core.annotation.Order;
|
||||||
|
import org.springframework.core.type.AnnotationMetadata;
|
||||||
|
import org.springframework.util.ClassUtils;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* {@link ImportBeanDefinitionRegistrar} to store the base package for tests.
|
||||||
|
*
|
||||||
|
* @author Phillip Webb
|
||||||
|
*/
|
||||||
|
@Order(Ordered.HIGHEST_PRECEDENCE)
|
||||||
|
public class TestAutoConfigurationPackageRegistrar implements
|
||||||
|
ImportBeanDefinitionRegistrar {
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void registerBeanDefinitions(AnnotationMetadata metadata,
|
||||||
|
BeanDefinitionRegistry registry) {
|
||||||
|
AnnotationAttributes attributes = AnnotationAttributes.fromMap(metadata
|
||||||
|
.getAnnotationAttributes(TestAutoConfigurationPackage.class.getName(),
|
||||||
|
true));
|
||||||
|
AutoConfigurationPackages.set(registry,
|
||||||
|
ClassUtils.getPackageName(attributes.getString("value")));
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue