/*
* Copyright 2010-2013 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.mybatis.spring.mapper;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.util.Arrays;
import java.util.Set;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.config.RuntimeBeanReference;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.context.annotation.ClassPathBeanDefinitionScanner;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.AnnotationTypeFilter;
import org.springframework.core.type.filter.AssignableTypeFilter;
import org.springframework.core.type.filter.TypeFilter;
import org.springframework.util.StringUtils;
/**
* A {@link ClassPathBeanDefinitionScanner} that registers Mappers by
* {@code basePackage}, {@code annotationClass}, or {@code markerInterface}. If
* an {@code annotationClass} and/or {@code markerInterface} is specified, only
* the specified types will be searched (searching for all interfaces will be
* disabled).
* <p>
* This functionality was previously a private class of
* {@link MapperScannerConfigurer}, but was broken out in version 1.2.0.
*
* @author Hunter Presnall
* @author Eduardo Macarron
*
* @see MapperFactoryBean
* @since 1.2.0
* @version $Id$
*/
public class ClassPathMapperScanner extends ClassPathBeanDefinitionScanner {
private boolean addToConfig = true;
private SqlSessionFactory sqlSessionFactory;
private SqlSessionTemplate sqlSessionTemplate;
private String sqlSessionTemplateBeanName;
private String sqlSessionFactoryBeanName;
private Class<? extends Annotation> annotationClass;
private Class<?> markerInterface;
public ClassPathMapperScanner(BeanDefinitionRegistry registry) {
super(registry, false);
}
public void setAddToConfig(boolean addToConfig) {
this.addToConfig = addToConfig;
}
public void setAnnotationClass(Class<? extends Annotation> annotationClass) {
this.annotationClass = annotationClass;
}
public void setMarkerInterface(Class<?> markerInterface) {
this.markerInterface = markerInterface;
}
public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
this.sqlSessionFactory = sqlSessionFactory;
}
public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
this.sqlSessionTemplate = sqlSessionTemplate;
}
public void setSqlSessionTemplateBeanName(String sqlSessionTemplateBeanName) {
this.sqlSessionTemplateBeanName = sqlSessionTemplateBeanName;
}
public void setSqlSessionFactoryBeanName(String sqlSessionFactoryBeanName) {
this.sqlSessionFactoryBeanName = sqlSessionFactoryBeanName;
}
/**
* Configures parent scanner to search for the right interfaces. It can search
* for all interfaces or just for those that extends a markerInterface or/and
* those annotated with the annotationClass
*/
public void registerFilters() {
boolean acceptAllInterfaces = true;
// if specified, use the given annotation and / or marker interface
if (this.annotationClass != null) {
addIncludeFilter(new AnnotationTypeFilter(this.annotationClass));
acceptAllInterfaces = false;
}
// override AssignableTypeFilter to ignore matches on the actual marker interface
if (this.markerInterface != null) {
addIncludeFilter(new AssignableTypeFilter(this.markerInterface) {
@Override
protected boolean matchClassName(String className) {
return false;
}
});
acceptAllInterfaces = false;
}
if (acceptAllInterfaces) {
// default include filter that accepts all classes
addIncludeFilter(new TypeFilter() {
@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException {
return true;
}
});
}
// exclude package-info.java
addExcludeFilter(new TypeFilter() {
@Override
public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException {
String className = metadataReader.getClassMetadata().getClassName();
return className.endsWith("package-info");
}
});
}
/**
* Calls the parent search that will search and register all the candidates.
* Then the registered objects are post processed to set them as
* MapperFactoryBeans
*/
@Override
public Set<BeanDefinitionHolder> doScan(String... basePackages) {
Set<BeanDefinitionHolder> beanDefinitions = super.doScan(basePackages);
if (beanDefinitions.isEmpty()) {
logger.warn("No MyBatis mapper was found in '" + Arrays.toString(basePackages) + "' package. Please check your configuration.");
} else {
processBeanDefinitions(beanDefinitions);
}
return beanDefinitions;
}
private void processBeanDefinitions(Set<BeanDefinitionHolder> beanDefinitions) {
GenericBeanDefinition definition;
for (BeanDefinitionHolder holder : beanDefinitions) {
definition = (GenericBeanDefinition) holder.getBeanDefinition();
if (logger.isDebugEnabled()) {
logger.debug("Creating MapperFactoryBean with name '" + holder.getBeanName()
+ "' and '" + definition.getBeanClassName() + "' mapperInterface");
}
// the mapper interface is the original class of the bean
// but, the actual class of the bean is MapperFactoryBean
definition.getPropertyValues().add("mapperInterface", definition.getBeanClassName());
definition.setBeanClass(MapperFactoryBean.class);
definition.getPropertyValues().add("addToConfig", this.addToConfig);
boolean explicitFactoryUsed = false;
if (StringUtils.hasText(this.sqlSessionFactoryBeanName)) {
definition.getPropertyValues().add("sqlSessionFactory", new RuntimeBeanReference(this.sqlSessionFactoryBeanName));
explicitFactoryUsed = true;
} else if (this.sqlSessionFactory != null) {
definition.getPropertyValues().add("sqlSessionFactory", this.sqlSessionFactory);
explicitFactoryUsed = true;
}
if (StringUtils.hasText(this.sqlSessionTemplateBeanName)) {
if (explicitFactoryUsed) {
logger.warn("Cannot use both: sqlSessionTemplate and sqlSessionFactory together. sqlSessionFactory is ignored.");
}
definition.getPropertyValues().add("sqlSessionTemplate", new RuntimeBeanReference(this.sqlSessionTemplateBeanName));
explicitFactoryUsed = true;
} else if (this.sqlSessionTemplate != null) {
if (explicitFactoryUsed) {
logger.warn("Cannot use both: sqlSessionTemplate and sqlSessionFactory together. sqlSessionFactory is ignored.");
}
definition.getPropertyValues().add("sqlSessionTemplate", this.sqlSessionTemplate);
explicitFactoryUsed = true;
}
if (!explicitFactoryUsed) {
if (logger.isDebugEnabled()) {
logger.debug("Enabling autowire by type for MapperFactoryBean with name '" + holder.getBeanName() + "'.");
}
definition.setAutowireMode(AbstractBeanDefinition.AUTOWIRE_BY_TYPE);
}
}
}
/**
* {@inheritDoc}
*/
@Override
protected boolean isCandidateComponent(AnnotatedBeanDefinition beanDefinition) {
return beanDefinition.getMetadata().isInterface() && beanDefinition.getMetadata().isIndependent();
}
/**
* {@inheritDoc}
*/
@Override
protected boolean checkCandidate(String beanName, BeanDefinition beanDefinition) {
if (super.checkCandidate(beanName, beanDefinition)) {
return true;
} else {
logger.warn("Skipping MapperFactoryBean with name '" + beanName
+ "' and '" + beanDefinition.getBeanClassName() + "' mapperInterface"
+ ". Bean already defined with the same name!");
return false;
}
}
}