/*
* 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.data.repository.config;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
import java.util.Collections;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanNameGenerator;
import org.springframework.core.env.Environment;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.TypeFilter;
import org.springframework.data.util.Streamable;
import org.springframework.util.Assert;
Base class to implement RepositoryConfigurationSource
s. Author: Oliver Gierke, Thomas Darimont, Peter Rietzler, Jens Schauder
/**
* Base class to implement {@link RepositoryConfigurationSource}s.
*
* @author Oliver Gierke
* @author Thomas Darimont
* @author Peter Rietzler
* @author Jens Schauder
*/
public abstract class RepositoryConfigurationSourceSupport implements RepositoryConfigurationSource {
protected static final String DEFAULT_REPOSITORY_IMPL_POSTFIX = "Impl";
private final Environment environment;
private final RepositoryBeanNameGenerator beanNameGenerator;
private final BeanDefinitionRegistry registry;
Creates a new RepositoryConfigurationSourceSupport
with the given environment. Params: - environment – must not be null.
- classLoader – must not be null.
- registry – must not be null.
/**
* Creates a new {@link RepositoryConfigurationSourceSupport} with the given environment.
*
* @param environment must not be {@literal null}.
* @param classLoader must not be {@literal null}.
* @param registry must not be {@literal null}.
*/
public RepositoryConfigurationSourceSupport(Environment environment, ClassLoader classLoader,
BeanDefinitionRegistry registry, BeanNameGenerator generator) {
Assert.notNull(environment, "Environment must not be null!");
Assert.notNull(classLoader, "ClassLoader must not be null!");
Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
this.environment = environment;
this.beanNameGenerator = new RepositoryBeanNameGenerator(classLoader, generator);
this.registry = registry;
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.RepositoryConfigurationSource#getCandidates(org.springframework.core.io.ResourceLoader)
*/
@Override
public Streamable<BeanDefinition> getCandidates(ResourceLoader loader) {
RepositoryComponentProvider scanner = new RepositoryComponentProvider(getIncludeFilters(), registry);
scanner.setConsiderNestedRepositoryInterfaces(shouldConsiderNestedRepositories());
scanner.setEnvironment(environment);
scanner.setResourceLoader(loader);
getExcludeFilters().forEach(it -> scanner.addExcludeFilter(it));
return Streamable.of(() -> getBasePackages().stream()//
.flatMap(it -> scanner.findCandidateComponents(it).stream()));
}
Return the TypeFilter
s to define which types to exclude when scanning for repositories. Default implementation returns an empty collection. Returns: must not be null.
/**
* Return the {@link TypeFilter}s to define which types to exclude when scanning for repositories. Default
* implementation returns an empty collection.
*
* @return must not be {@literal null}.
*/
@Override
public Streamable<TypeFilter> getExcludeFilters() {
return Streamable.empty();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.RepositoryConfigurationSource#getBeanNameGenerator()
*/
@Override
public String generateBeanName(BeanDefinition beanDefinition) {
return beanNameGenerator.generateBeanName(beanDefinition);
}
Return the TypeFilter
s to define which types to include when scanning for repositories. Default implementation returns an empty collection. Returns: must not be null.
/**
* Return the {@link TypeFilter}s to define which types to include when scanning for repositories. Default
* implementation returns an empty collection.
*
* @return must not be {@literal null}.
*/
protected Iterable<TypeFilter> getIncludeFilters() {
return Collections.emptySet();
}
Returns whether we should consider nested repositories, i.e. repository interface definitions nested in other
classes.
Returns: true if the container should look for nested repository interface definitions.
/**
* Returns whether we should consider nested repositories, i.e. repository interface definitions nested in other
* classes.
*
* @return {@literal true} if the container should look for nested repository interface definitions.
*/
public boolean shouldConsiderNestedRepositories() {
return false;
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.RepositoryConfigurationSource#toImplementationDetectionConfiguration()
*/
@Override
public ImplementationDetectionConfiguration toImplementationDetectionConfiguration(MetadataReaderFactory factory) {
return new SpringImplementationDetectionConfiguration(this, factory);
}
@RequiredArgsConstructor
private class SpringImplementationDetectionConfiguration implements ImplementationDetectionConfiguration {
private final RepositoryConfigurationSource source;
private final @Getter MetadataReaderFactory metadataReaderFactory;
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.CustomRepositoryImplementationDetector.ImplementationDetectionConfiguration#getImplementationPostfix()
*/
@Override
public String getImplementationPostfix() {
return source.getRepositoryImplementationPostfix()
.orElse(DefaultRepositoryConfiguration.DEFAULT_REPOSITORY_IMPLEMENTATION_POSTFIX);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.CustomRepositoryImplementationDetector.ImplementationDetectionConfiguration#getBasePackages()
*/
@Override
public Streamable<String> getBasePackages() {
return source.getBasePackages();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.CustomRepositoryImplementationDetector.ImplementationDetectionConfiguration#getExcludeFilters()
*/
@Override
public Streamable<TypeFilter> getExcludeFilters() {
return source.getExcludeFilters();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.config.CustomRepositoryImplementationDetector.ImplementationDetectionConfiguration#generateBeanName(org.springframework.beans.factory.config.BeanDefinition)
*/
@Override
public String generateBeanName(BeanDefinition definition) {
return source.generateBeanName(definition);
}
}
}