7 Replies Latest reply on Jun 28, 2010 7:26 AM by ilya_shaikovsky

Custom Facelets tag ignored inside a4j:repeat

xck3001 Jun 16, 2010 8:41 AM

Hi,

I have some problems using a custom Facelets tag (extending UIComponentBase) inside a a4j:repeat loop. Outside of the loop, everything works fine. Inside the loop, the tag is ignored and no content rendered inside the page.

While debugging, I see that the tag's encodeAll() method is not triggered at all, so I think I am missing something.

Does my tag have to extend some Ajax4JSF class in order to work inside the A4J loop?

We use JSF2 with RF 3.3.3.Final .

Thanks in advance,

Matthias

1. Re: Custom Facelets tag ignored inside a4j:repeat

ilya_shaikovsky Jun 16, 2010 9:19 AM (in response to xck3001)

Does my tag have to extend some Ajax4JSF class in order to work inside the A4J loop?
No. a4j:repeat - could be used for f: and h: and myfaces tags for example and them not depends on any a4j classes.

So need to look more to your impl.
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2. Re: Custom Facelets tag ignored inside a4j:repeat

xck3001 Jun 16, 2010 9:27 AM (in response to ilya_shaikovsky)

We noted that is does not depend on any attribute/parameter that I pass inside the tag, because even without any attribute the encodeAll() is not triggered.

I will try to create a very small piece of an example to simplify the examination.
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3. Re: Custom Facelets tag ignored inside a4j:repeat

xck3001 Jun 17, 2010 4:21 AM (in response to xck3001)

BTW, in the "real-world" page we use dozens of h:outputText inside the a4j:repeat, so this indeed works. Maybe my custom component is just something missing.

I made an reduced example which also reproduces this error:

Custom component:

@FacesComponent("testComponent")
public class TestComponent extends UIComponentBase
{

    @Override
    public String getFamily()
    {
        return null;
    }

    @Override
    public void encodeAll(FacesContext ctx) throws IOException
    {
        ctx.getResponseWriter().write("test");
    }

}

Taglib:

<tag>
        <tag-name>test</tag-name>
        <component>
            <component-type>
                testComponent
            </component-type>
        </component>
    </tag>

Facelet:

<f:view contentType="text/html">
        <head>
        
        </head>
        <body>        
            <a4j:repeat value="#{testBean.items}" var="item">
                #{item} <test:test />
                <br/>
            </a4j:repeat>
            Output below list:<test:test />                
        </body>
    </f:view>

Managed bean, just created for using inside a4j:repeat loop:

@ManagedBean
public class TestBean
{

    private List<String> items;

    @PostConstruct
    public void init()
    {
        List<String> items = new ArrayList<String>();
        items.add("item1");
        items.add("item2");
        items.add("item3");
        this.items = items;

    }

    public List<String> getItems()
    {
        return items;
    }
}

This will generate the following output (note that the tag outside of the a4j:repeat is rendered correctly):

item1                     
item2                     
item3                     
Output below list:test

4. Re: Custom Facelets tag ignored inside a4j:repeat

ilya_shaikovsky Jun 17, 2010 5:04 AM (in response to xck3001)
probably some problems with namespace definition or taglib declaration. In order to check follow simple steps:
open test page
call "show page HTML source" from browser menu
verify if there are
<test:test />
tags in generated HTML. If them present - tag was just not identified.
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5. Re: Custom Facelets tag ignored inside a4j:repeat

xck3001 Jun 17, 2010 5:34 AM (in response to ilya_shaikovsky)

The tag is resolved, because you can see the "test" output at the last line. Also, here is the HTML source:

          <body>
                    item1
                    <br />
                    item2
                    <br />

                    item3
                    <br />
               Output below list:test                    
          </body>

6. Re: Custom Facelets tag ignored inside a4j:repeat

xck3001 Jun 22, 2010 6:32 AM (in response to xck3001)

Can I provide any additional information about the problem?
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7. Re: Custom Facelets tag ignored inside a4j:repeat

ilya_shaikovsky Jun 28, 2010 7:26 AM (in response to xck3001)

sample in war with java sources would be great.
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