org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean Maven / Gradle / Ivy
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/*
* Copyright 2002-2014 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.orm.hibernate3.annotation;
import java.io.IOException;
import java.util.Set;
import java.util.TreeSet;
import javax.persistence.Embeddable;
import javax.persistence.Entity;
import javax.persistence.MappedSuperclass;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.cfg.Configuration;
import org.springframework.context.ResourceLoaderAware;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternUtils;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
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.TypeFilter;
import org.springframework.orm.hibernate3.LocalSessionFactoryBean;
import org.springframework.util.ClassUtils;
/**
* Subclass of Spring's standard LocalSessionFactoryBean for Hibernate,
* supporting annotation metadata for mappings.
*
* Example for an AnnotationSessionFactoryBean bean definition:
*
*
* <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
* <property name="dataSource" ref="dataSource"/>
* <property name="annotatedClasses">
* <list>
* <value>test.package.Foo</value>
* <value>test.package.Bar</value>
* </list>
* </property>
* </bean>
*
* Or when using classpath scanning for autodetection of entity classes:
*
*
* <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
* <property name="dataSource" ref="dataSource"/>
* <property name="packagesToScan" value="test.package"/>
* </bean>
*
* Requires Hibernate 3.6.x, as of Spring 4.0.
*
* @author Juergen Hoeller
* @since 1.2.2
* @see #setDataSource
* @see #setHibernateProperties
* @see #setAnnotatedClasses
* @see #setAnnotatedPackages
*/
public class AnnotationSessionFactoryBean extends LocalSessionFactoryBean implements ResourceLoaderAware {
private static final String RESOURCE_PATTERN = "/**/*.class";
private static final String PACKAGE_INFO_SUFFIX = ".package-info";
private Class[] annotatedClasses;
private String[] annotatedPackages;
private String[] packagesToScan;
private TypeFilter[] entityTypeFilters = new TypeFilter[] {
new AnnotationTypeFilter(Entity.class, false),
new AnnotationTypeFilter(Embeddable.class, false),
new AnnotationTypeFilter(MappedSuperclass.class, false),
new AnnotationTypeFilter(org.hibernate.annotations.Entity.class, false)};
private ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
/**
* Specify annotated classes, for which mappings will be read from
* class-level annotation metadata.
* @see org.hibernate.cfg.Configuration#addAnnotatedClass(Class)
*/
public void setAnnotatedClasses(Class... annotatedClasses) {
this.annotatedClasses = annotatedClasses;
}
/**
* Specify the names of annotated packages, for which package-level
* annotation metadata will be read.
* @see org.hibernate.cfg.Configuration#addPackage(String)
*/
public void setAnnotatedPackages(String... annotatedPackages) {
this.annotatedPackages = annotatedPackages;
}
/**
* Specify packages to search using Spring-based scanning for entity classes in
* the classpath. This is an alternative to listing annotated classes explicitly.
*
Default is none. Specify packages to search for autodetection of your entity
* classes in the classpath. This is analogous to Spring's component-scan feature
* ({@link org.springframework.context.annotation.ClassPathBeanDefinitionScanner}).
*/
public void setPackagesToScan(String... packagesToScan) {
this.packagesToScan = packagesToScan;
}
/**
* Specify custom type filters for Spring-based scanning for entity classes.
*
Default is to search all specified packages for classes annotated with
* {@code @javax.persistence.Entity}, {@code @javax.persistence.Embeddable}
* or {@code @javax.persistence.MappedSuperclass}, as well as for
* Hibernate's special {@code @org.hibernate.annotations.Entity}.
* @see #setPackagesToScan
*/
public void setEntityTypeFilters(TypeFilter... entityTypeFilters) {
this.entityTypeFilters = entityTypeFilters;
}
@Override
public void setResourceLoader(ResourceLoader resourceLoader) {
this.resourcePatternResolver = ResourcePatternUtils.getResourcePatternResolver(resourceLoader);
}
/**
* Reads metadata from annotated classes and packages into the
* AnnotationConfiguration instance.
*/
@Override
protected void postProcessMappings(Configuration config) throws HibernateException {
if (this.annotatedClasses != null) {
for (Class annotatedClass : this.annotatedClasses) {
config.addAnnotatedClass(annotatedClass);
}
}
if (this.annotatedPackages != null) {
for (String annotatedPackage : this.annotatedPackages) {
config.addPackage(annotatedPackage);
}
}
scanPackages(config);
}
/**
* Perform Spring-based scanning for entity classes.
* @see #setPackagesToScan
*/
protected void scanPackages(Configuration config) {
if (this.packagesToScan != null) {
Set classNames = new TreeSet();
Set packageNames = new TreeSet();
try {
for (String pkg : this.packagesToScan) {
String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX +
ClassUtils.convertClassNameToResourcePath(pkg) + RESOURCE_PATTERN;
Resource[] resources = this.resourcePatternResolver.getResources(pattern);
MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);
for (Resource resource : resources) {
if (resource.isReadable()) {
MetadataReader reader = readerFactory.getMetadataReader(resource);
String className = reader.getClassMetadata().getClassName();
if (matchesEntityTypeFilter(reader, readerFactory)) {
classNames.add(className);
}
else if (className.endsWith(PACKAGE_INFO_SUFFIX)) {
packageNames.add(className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
}
}
}
}
}
catch (IOException ex) {
throw new MappingException("Failed to scan classpath for unlisted classes", ex);
}
try {
for (String className : classNames) {
config.addAnnotatedClass(this.resourcePatternResolver.getClassLoader().loadClass(className));
}
for (String packageName : packageNames) {
config.addPackage(packageName);
}
}
catch (ClassNotFoundException ex) {
throw new MappingException("Failed to load annotated classes from classpath", ex);
}
}
}
/**
* Check whether any of the configured entity type filters matches
* the current class descriptor contained in the metadata reader.
*/
private boolean matchesEntityTypeFilter(MetadataReader reader, MetadataReaderFactory readerFactory) throws IOException {
if (this.entityTypeFilters != null) {
for (TypeFilter filter : this.entityTypeFilters) {
if (filter.match(reader, readerFactory)) {
return true;
}
}
}
return false;
}
}