Can't seem to find the problem here. The search() method is defined in the local interface and the session bean, and it's invoked by the JSP/JSF. As you can see, the email field is annotated as @In+@Out, neither required. I recieve as NoSuchMethodException.

Entity

@Local
public interface UserSearch {
 public String search();
}

@Stateful
@Scope(ScopeType.SESSION)
@Name("usersearch")
public class UserSearchAction implements UserSearch, Serializable {

 @PersistenceContext
 private EntityManager em;

 @In(required=false)
 @Out(required=false)
 private String email;
 ...
 public String search() {
 String queryStr = "from UserView where lower(email) = :email";
 Query query = em.createQuery(queryStr);

 query.setParameter("email", email.toLowerCase() + "%");

 //The complete list of results
 this.searchResults = query.getResultList();
 return "refresh-page";
 }
 ...
}

<f:view>
 <h:form>
 <h:inputText id="email" value="#{email}" />
 <h:commandButton id="search" type="submit" value="Search" action="#{usersearch.search}" styleClass="formButton" />
 </h:form>
</f:view>

javax.faces.FacesException: Error calling action method of component with id _id0:search
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
 at javax.faces.component.UICommand.broadcast(UICommand.java:106)
 at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
 at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
 at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:316)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run()V(Unknown Source)
Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{usersearch.search}
 at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:165)
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
 ... 27 more
Caused by: java.lang.NoSuchMethodException: search
 at java.lang.Class.findMethod(Ljava.lang.String;[Ljava.lang.Class;I)Ljava.lang.reflect.Method;(Unknown Source)
 at java.lang.Class.getMethod(Ljava.lang.String;[Ljava.lang.Class;I)Ljava.lang.reflect.Method;(Unknown Source)
 at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:118)