[richfaces-issues] [JBoss JIRA] Commented: (RF-10974) a4j:poll data being called twice

[Jay Balunas (JIRA)]

    [ https://issues.jboss.org/browse/RF-10974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12604779#comment-12604779 ] 

Jay Balunas commented on RF-10974:
----------------------------------

It is not uncommon for some attribute calls like "data" to call multiple times through the lifecycle.  This is common to JSF not just RichFaces.  These should be used as pure "getters" not for doing lookups, or state change.

> a4j:poll data being called twice
> --------------------------------
>
>                 Key: RF-10974
>                 URL: https://issues.jboss.org/browse/RF-10974
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component-a4j-core
>    Affects Versions: 4.0.0.Final
>         Environment: Tomcat 7.0.12
>            Reporter: Martin Sadowski
>
> Bean:
> {code}
> @ManagedBean
> @SessionScoped
> public class TestBean {
>   
>   int i = 0;
>   
>   public String getPollData() {
>     System.out.println("getPollData()");
>     return "" + i++;
>   }
> }
> {code}
> test.xhtml:
> {code}
> <a4j:poll interval="10000" data="#{testBean.pollData}" oncomplete="alert(event.data);"/>
> {code}
> Result:
> {code}
> 1
> 3
> 5
> ...
> {code}

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