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To enhance the performance and support wildcards #175

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34 changes: 26 additions & 8 deletions src/main/java/org/mybatis/spring/SqlSessionFactoryBean.java
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,13 @@
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.NestedIOException;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.type.ClassMetadata;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy;
import org.springframework.util.ClassUtils;

/**
* {@code FactoryBean} that creates an MyBatis {@code SqlSessionFactory}.
Expand Down Expand Up @@ -191,7 +197,7 @@ public void setPlugins(Interceptor[] plugins) {
}

/**
* Packages to search for type aliases.
* Packages to search for type aliases,wildcards are supported,such as a.b.**.c.
*
* @since 1.0.1
*
Expand Down Expand Up @@ -390,7 +396,7 @@ public void afterPropertiesSet() throws Exception {
* @return SqlSessionFactory
* @throws IOException if loading the config file failed
*/
protected SqlSessionFactory buildSqlSessionFactory() throws IOException {
protected SqlSessionFactory buildSqlSessionFactory() throws Exception {

Configuration configuration;

Expand Down Expand Up @@ -431,12 +437,24 @@ protected SqlSessionFactory buildSqlSessionFactory() throws IOException {
String[] typeAliasPackageArray = tokenizeToStringArray(this.typeAliasesPackage,
ConfigurableApplicationContext.CONFIG_LOCATION_DELIMITERS);
for (String packageToScan : typeAliasPackageArray) {
configuration.getTypeAliasRegistry().registerAliases(packageToScan,
typeAliasesSuperType == null ? Object.class : typeAliasesSuperType);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Scanned package: '" + packageToScan + "' for aliases");
}
}
String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX +
ClassUtils.convertClassNameToResourcePath(packageToScan) + "/**/*.class";
ResourcePatternResolver rpr = new PathMatchingResourcePatternResolver();
Resource[] resources = rpr.getResources(pattern);
MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(rpr);
for (Resource resource : resources) {
if (resource.isReadable()) {
ClassMetadata classMetadata = readerFactory.getMetadataReader(resource).getClassMetadata();
Class clazz = Class.forName(classMetadata.getClassName());
if (typeAliasesSuperType == null || typeAliasesSuperType.isAssignableFrom(clazz)){
configuration.getTypeAliasRegistry().registerAlias(clazz);
}
}
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Scanned package: '" + packageToScan + "' for aliases");
}
}
}

if (!isEmpty(this.typeAliases)) {
Expand Down