The Contexts and Dependency Injection (CDI) 1.1 specification introduced implicit bean discovery mode, resulting in behavior and performance changes from the Java Platform, Enterprise Edition (Java EE) 6 CDI 1.0 implementation in WebSphere Application Server. An implicit bean is any archive that contains one or more bean classes with either a bean-defining annotation or one or more session beans.

When moving from Java EE 6 CDI 1.0 to Java EE 7 CDI 1.1 or later, implicit bean discovery results in all WAR and JAR files being scanned by the runtime, even if they do not have a beans.xml file. This scan is a behavior change from Java EE 6 CDI 1.0, where a missing beans.xml file would prevent the scanning of archives in the application.

This rule flags the following bean-defining annotations and Enterprise JavaBeans (EJB) session beans in all WAR and JAR files that do not have a beans.xml file.

@ApplicationScoped, @SessionScoped, @ConversationScoped, and @RequestedScoped annotations
All other normal scope type annotations
@Interceptor and @Decorator annotations
@Stereotype and @Dependent annotations
@Stateful, @Stateless and @Singleton session beans

The binary application scanner flags classes that are annotated with @NormalScope. These annotations may be detected even if they appear outside the context of the beans.xml files that explicitly or implicitly use them.

To disable this CDI behavior change during run time at the WAR or JAR level, add a beans.xml file with bean discovery mode set to none, as shown in the following example.


<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
		  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
		  		      http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd" 
		  		      bean-discovery-mode="none" version="1.1">
</beans>

On Liberty, you can also disable this behavior by adding the following property to the server.xml file.


<cdi12 enableImplicitBeanArchives="false"/>

For more information on the Java EE 7 CDI 1.2 implementation, see Contexts and Dependency Injection 1.2 behavior changes.