7.6.3. Configure a Container Interceptor

Summary

Container interceptors use the standard Java EE interceptor libraries, meaning they use the same XSD elements that are allowed in ejb-jar.xml file for the 3.1 version of the ejb-jar deployment descriptor. Because they are based on the standard Jave EE interceptor libraries, container interceptors may only be configured using deployment descriptors. This was done by design so applications would not require any JBoss specific annotation or other library dependencies. For more information about container interceptors, refer to: Section 7.6.1, “About Container Interceptors”.

Procedure 7.11. Create the Descriptor File to Configure the Container Interceptor

  1. Create a jboss-ejb3.xml file in the META-INF directory of the EJB deployment.
  2. Configure the container interceptor elements in the descriptor file.
    1. Use the urn:container-interceptors:1.0 namespace to specify configuration of container interceptor elements.
    2. Use the <container-interceptors> element to specify the container interceptors.
    3. Use the <interceptor-binding> elements to bind the container interceptor to the EJBs. The interceptors can be bound in either of the following ways:
      • Bind the interceptor to all the EJBs in the deployment using the * wildcard.
      • Bind the interceptor at the individual bean level using the specific EJB name.
      • Bind the interceptor at the specific method level for the EJBs.

      Note

      These elements are configured using the EJB 3.1 XSD in the same way it is done for Java EE interceptors.
  3. Review the following descriptor file for examples of the above elements.

    Example 7.2. jboss-ejb3.xml

    <jboss xmlns="http://www.jboss.com/xml/ns/javaee"
       xmlns:jee="http://java.sun.com/xml/ns/javaee"
       xmlns:ci ="urn:container-interceptors:1.0">
 
    <jee:assembly-descriptor>
        <ci:container-interceptors>
            <!-- Default interceptor -->
            <jee:interceptor-binding>
                <ejb-name>*</ejb-name>
                <interceptor-class>org.jboss.as.test.integration.ejb.container.interceptor.ContainerInterceptorOne</interceptor-class>
            </jee:interceptor-binding>
            <!-- Class level container-interceptor -->
            <jee:interceptor-binding>
                <ejb-name>AnotherFlowTrackingBean</ejb-name>
                <interceptor-class>org.jboss.as.test.integration.ejb.container.interceptor.ClassLevelContainerInterceptor</interceptor-class>
            </jee:interceptor-binding>
            <!-- Method specific container-interceptor -->
            <jee:interceptor-binding>
                <ejb-name>AnotherFlowTrackingBean</ejb-name>
                <interceptor-class>org.jboss.as.test.integration.ejb.container.interceptor.MethodSpecificContainerInterceptor</interceptor-class>
                <method>
                    <method-name>echoWithMethodSpecificContainerInterceptor</method-name>
                </method>
            </jee:interceptor-binding>
            <!-- container interceptors in a specific order -->
            <jee:interceptor-binding>
                <ejb-name>AnotherFlowTrackingBean</ejb-name>
                <interceptor-order>
                    <interceptor-class>org.jboss.as.test.integration.ejb.container.interceptor.ClassLevelContainerInterceptor</interceptor-class>
                    <interceptor-class>org.jboss.as.test.integration.ejb.container.interceptor.MethodSpecificContainerInterceptor</interceptor-class>
                    <interceptor-class>org.jboss.as.test.integration.ejb.container.interceptor.ContainerInterceptorOne</interceptor-class>
                </interceptor-order>
                <method>
                    <method-name>echoInSpecificOrderOfContainerInterceptors</method-name>
                </method>
            </jee:interceptor-binding>
        </ci:container-interceptors>
    </jee:assembly-descriptor>
</jboss>
    The XSD for the urn:container-interceptors:1.0 namespace is available at EAP_HOME/docs/schema/jboss-ejb-container-interceptors_1_0.xsd.
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