org.mybatis.spring.annotation

Annotation Type MapperScan

@Retention(value=RUNTIME)
 @Target(value=TYPE)
 @Documented
 @Import(value=MapperScannerRegistrar.class)
 @Repeatable(value=MapperScans.class)
public @interface MapperScan

Use this annotation to register MyBatis mapper interfaces when using Java Config. It performs when same work as MapperScannerConfigurer via MapperScannerRegistrar.

Configuration example:

 @Configuration
 @MapperScan("org.mybatis.spring.sample.mapper")
 public class AppConfig {

   @Bean
   public DataSource dataSource() {
     return new EmbeddedDatabaseBuilder()
              .addScript("schema.sql")
              .build();
   }

   @Bean
   public DataSourceTransactionManager transactionManager() {
     return new DataSourceTransactionManager(dataSource());
   }

   @Bean
   public SqlSessionFactory sqlSessionFactory() throws Exception {
     SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
     sessionFactory.setDataSource(dataSource());
     return sessionFactory.getObject();
   }
 }
 

Since:

1.2.0

Author:

Michael Lanyon, Eduardo Macarron

See Also:

MapperScannerRegistrar, MapperFactoryBean

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
Class<? extends Annotation>	annotationClass This property specifies the annotation that the scanner will search for.
Class<?>[]	basePackageClasses Type-safe alternative to basePackages() for specifying the packages to scan for annotated components.
String[]	basePackages Base packages to scan for MyBatis interfaces.
Class<? extends MapperFactoryBean>	factoryBean Specifies a custom MapperFactoryBean to return a mybatis proxy as spring bean.
Class<?>	markerInterface This property specifies the parent that the scanner will search for.
Class<? extends org.springframework.beans.factory.support.BeanNameGenerator>	nameGenerator The BeanNameGenerator class to be used for naming detected components within the Spring container.
String	sqlSessionFactoryRef Specifies which SqlSessionFactory to use in the case that there is more than one in the spring context.
String	sqlSessionTemplateRef Specifies which SqlSessionTemplate to use in the case that there is more than one in the spring context.
String[]	value Alias for the basePackages() attribute.

Element Detail

value

public abstract String[] value

Alias for the basePackages() attribute. Allows for more concise annotation declarations e.g.: @MapperScan("org.my.pkg") instead of @MapperScan(basePackages = "org.my.pkg")}.

Returns:

base package names

Default:

{}

basePackages

public abstract String[] basePackages

Base packages to scan for MyBatis interfaces. Note that only interfaces with at least one method will be registered; concrete classes will be ignored.

Returns:

base package names for scanning mapper interface

Default:

{}

basePackageClasses

public abstract Class<?>[] basePackageClasses

Type-safe alternative to basePackages() for specifying the packages to scan for annotated components. The package of each class specified will be scanned.

Consider creating a special no-op marker class or interface in each package that serves no purpose other than being referenced by this attribute.

Returns:

classes that indicate base package for scanning mapper interface

Default:

{}

nameGenerator

public abstract Class<? extends org.springframework.beans.factory.support.BeanNameGenerator> nameGenerator

The BeanNameGenerator class to be used for naming detected components within the Spring container.

Returns:

the class of BeanNameGenerator

Default:

org.springframework.beans.factory.support.BeanNameGenerator.class

annotationClass

public abstract Class<? extends Annotation> annotationClass

This property specifies the annotation that the scanner will search for.

The scanner will register all interfaces in the base package that also have the specified annotation.

Note this can be combined with markerInterface.

Returns:

the annotation that the scanner will search for

Default:

java.lang.annotation.Annotation.class

markerInterface

public abstract Class<?> markerInterface

This property specifies the parent that the scanner will search for.

The scanner will register all interfaces in the base package that also have the specified interface class as a parent.

Note this can be combined with annotationClass.

Returns:

the parent that the scanner will search for

Default:

java.lang.Class.class

sqlSessionTemplateRef

public abstract String sqlSessionTemplateRef

Specifies which SqlSessionTemplate to use in the case that there is more than one in the spring context. Usually this is only needed when you have more than one datasource.

Returns:

the bean name of SqlSessionTemplate

Default:

""

sqlSessionFactoryRef

public abstract String sqlSessionFactoryRef

Specifies which SqlSessionFactory to use in the case that there is more than one in the spring context. Usually this is only needed when you have more than one datasource.

Returns:

the bean name of SqlSessionFactory

Default:

""

factoryBean

public abstract Class<? extends MapperFactoryBean> factoryBean

Specifies a custom MapperFactoryBean to return a mybatis proxy as spring bean.

Returns:

the class of MapperFactoryBean

Default:

org.mybatis.spring.mapper.MapperFactoryBean.class