[jboss-jira] [JBoss JIRA] (WFLY-10754) NullPointerException using Stateless with configured interceptors
Matej Novotny (JIRA)
issues at jboss.org
Mon Jul 30 10:13:00 EDT 2018
[ https://issues.jboss.org/browse/WFLY-10754?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matej Novotny updated WFLY-10754:
---------------------------------
Description:
I report a strange behavior on WildFly 13 when configuring interceptors within stateless. Below I describe the scenario:
Here a simple interceptor:
{code:java}
package it.vige.injection.interceptors;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
@Interceptor
public class OKInterceptor {
@AroundInvoke
public Object aroundInvoke(InvocationContext ic) throws Exception {
return ic.proceed();
}
}
{code}
Here an annotation used as interceptor binding:
{code:java}
package it.vige.injection.interceptors;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import javax.interceptor.InterceptorBinding;
@Retention(RUNTIME)
@Target({ METHOD, TYPE, CONSTRUCTOR })
@InterceptorBinding
public @interface NotOK {
}
{code}
Here an interceptor annotated with the interceptor binding:
{code:java}
package it.vige.injection.interceptors;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
@Interceptor
@NotOK
public class NotOKInterceptor {
@AroundInvoke
public Object aroundInvoke(InvocationContext ic) throws Exception {
return ic.proceed();
}
}
{code}
Here the stateless service configured with both the interceptors:
{code:java}
package it.vige.injection.interceptors;
import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
public class SimpleService {
@Interceptors({ OKInterceptor.class })
public void ok() {
}
@NotOK
public void notOk() {
}
}
{code}
This service must have two methods, one attached to the simple interceptor and the other attached to the interceptor binding.
Here the beans.xml configuration:
{code:java}
<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_2_0.xsd"
version="2.0" bean-discovery-mode="all">
<interceptors>
<class>it.vige.injection.interceptors.OKInterceptor</class>
<class>it.vige.injection.interceptors.NotOKInterceptor</class>
</interceptors>
</beans>
{code}
And in the end the client who call the service:
{code:java}
....
@Inject
private SimpleService simpleService;
...
// this call works:
simpleService.ok();
// this call starts a NullPointerException:
simpleService.notOk();
...
{code}
when I try to call the notOk method I get this exception:
{code:java}
javax.ejb.EJBException: java.lang.NullPointerException
at deployment.test.war//it.vige.injection.test.InterceptorsTestCase.testNotOk(InterceptorsTestCase.java:52)
Caused by: java.lang.NullPointerException
at deployment.test.war//it.vige.injection.test.InterceptorsTestCase.testNotOk(InterceptorsTestCase.java:52)
{code}
The same thing was tested on WildFly 11.0.0.Final and it was ok.
If on WildFfly 13.0.0.Final I remove the @Stateless annotation from the service it works
was:
I report a strange behavior on WildFly 13 when configuring interceptors within stateless. Below I describe the scenario:
Here a simple interceptor:
{code:java}
package it.vige.injection.interceptors;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
@Interceptor
public class OKInterceptor {
@AroundInvoke
public Object aroundInvoke(InvocationContext ic) throws Exception {
return ic.proceed();
}
}
{code}
Here an annotation used as interceptor binding:
{code:java}
package it.vige.injection.interceptors;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import javax.interceptor.InterceptorBinding;
@Retention(RUNTIME)
@Target({ METHOD, TYPE, CONSTRUCTOR })
@InterceptorBinding
public @interface NotOK {
}
{code}
Here an interceptor annotated with the interceptor binding:
{code:java}
package it.vige.injection.interceptors;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
@Interceptor
@NotOK
public class NotOKInterceptor {
@AroundInvoke
public Object aroundInvoke(InvocationContext ic) throws Exception {
return ic.proceed();
}
}
{code}
Here the stateless service configured with both the interceptors:
{code:java}
package it.vige.injection.interceptors;
import javax.ejb.Stateless;
import javax.interceptor.Interceptors;
@Stateless
public class SimpleService {
@Interceptors({ OKInterceptor.class })
public void ok() {
}
@NotOK
public void notOk() {
}
}
{code}
This service must have two methods, one attached to the simple interceptor and the other attached to the interceptor binding.
Here the beans.xml configuration:
{code:java}
<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_2_0.xsd"
version="2.0" bean-discovery-mode="all">
<interceptors>
<class>it.vige.injection.interceptors.OKInterceptor</class>
<class>it.vige.injection.interceptors.NotOKInterceptor</class>
</interceptors>
</beans>
{code}
And in the end the client who call the service:
{code:java}
....
@Inject
private SimpleService simpleService;
...
// this call works:
simpleService.ok();
// this call starts a NullPointerException:
simpleService.notOk();
...
{code}
when I try to call the notOk method I get this exception:
{code:java}
javax.ejb.EJBException: java.lang.NullPointerException
at deployment.test.war//it.vige.injection.test.InterceptorsTestCase.testNotOk(InterceptorsTestCase.java:52)
Caused by: java.lang.NullPointerException
at deployment.test.war//it.vige.injection.test.InterceptorsTestCase.testNotOk(InterceptorsTestCase.java:52)
{code}
The same thing was tested on WildFly 12.0.0.Final and it was ok.
If on WildFfly 13.0.0.Final I remove the @Stateless annotation from the service it works
Workaround Description:
Do *not* declare the {{OKInterceptor}} in {{beans.xml}}.
According to spec, interceptors declared via {{@Interceptors}} annotation do not require this for activation anyway. Hence the interceptor will still get invoked and the error will disappear.
Workaround: Workaround Exists
Priority: Minor (was: Major)
Environment: WildFly 12.0.0.Final and newer (was: WildFly 13.0.0.Final and java 10.0.1)
> NullPointerException using Stateless with configured interceptors
> -----------------------------------------------------------------
>
> Key: WFLY-10754
> URL: https://issues.jboss.org/browse/WFLY-10754
> Project: WildFly
> Issue Type: Bug
> Components: CDI / Weld
> Affects Versions: 13.0.0.Final
> Environment: WildFly 12.0.0.Final and newer
> Reporter: Luca Stancapiano
> Assignee: Matej Novotny
> Priority: Minor
>
> I report a strange behavior on WildFly 13 when configuring interceptors within stateless. Below I describe the scenario:
> Here a simple interceptor:
> {code:java}
> package it.vige.injection.interceptors;
> import javax.interceptor.AroundInvoke;
> import javax.interceptor.Interceptor;
> import javax.interceptor.InvocationContext;
> @Interceptor
> public class OKInterceptor {
> @AroundInvoke
> public Object aroundInvoke(InvocationContext ic) throws Exception {
> return ic.proceed();
> }
> }
> {code}
> Here an annotation used as interceptor binding:
> {code:java}
> package it.vige.injection.interceptors;
> import static java.lang.annotation.ElementType.CONSTRUCTOR;
> import static java.lang.annotation.ElementType.METHOD;
> import static java.lang.annotation.ElementType.TYPE;
> import static java.lang.annotation.RetentionPolicy.RUNTIME;
> import java.lang.annotation.Retention;
> import java.lang.annotation.Target;
> import javax.interceptor.InterceptorBinding;
> @Retention(RUNTIME)
> @Target({ METHOD, TYPE, CONSTRUCTOR })
> @InterceptorBinding
> public @interface NotOK {
> }
> {code}
> Here an interceptor annotated with the interceptor binding:
> {code:java}
> package it.vige.injection.interceptors;
> import javax.interceptor.AroundInvoke;
> import javax.interceptor.Interceptor;
> import javax.interceptor.InvocationContext;
> @Interceptor
> @NotOK
> public class NotOKInterceptor {
> @AroundInvoke
> public Object aroundInvoke(InvocationContext ic) throws Exception {
> return ic.proceed();
> }
> }
> {code}
> Here the stateless service configured with both the interceptors:
> {code:java}
> package it.vige.injection.interceptors;
> import javax.ejb.Stateless;
> import javax.interceptor.Interceptors;
> @Stateless
> public class SimpleService {
> @Interceptors({ OKInterceptor.class })
> public void ok() {
> }
> @NotOK
> public void notOk() {
> }
> }
> {code}
> This service must have two methods, one attached to the simple interceptor and the other attached to the interceptor binding.
> Here the beans.xml configuration:
> {code:java}
> <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_2_0.xsd"
> version="2.0" bean-discovery-mode="all">
> <interceptors>
> <class>it.vige.injection.interceptors.OKInterceptor</class>
> <class>it.vige.injection.interceptors.NotOKInterceptor</class>
> </interceptors>
> </beans>
> {code}
> And in the end the client who call the service:
> {code:java}
> ....
> @Inject
> private SimpleService simpleService;
> ...
> // this call works:
> simpleService.ok();
> // this call starts a NullPointerException:
> simpleService.notOk();
> ...
> {code}
> when I try to call the notOk method I get this exception:
> {code:java}
> javax.ejb.EJBException: java.lang.NullPointerException
> at deployment.test.war//it.vige.injection.test.InterceptorsTestCase.testNotOk(InterceptorsTestCase.java:52)
> Caused by: java.lang.NullPointerException
> at deployment.test.war//it.vige.injection.test.InterceptorsTestCase.testNotOk(InterceptorsTestCase.java:52)
> {code}
> The same thing was tested on WildFly 11.0.0.Final and it was ok.
> If on WildFfly 13.0.0.Final I remove the @Stateless annotation from the service it works
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