How to rerender a4j:mediaOutput?

[alexanderbelov]

Can anybody advice how can I reRender a4j:mediaOuptut?

I have the following:

<h:selectOneListbox size="1" id="currentFilters" value="#{graphSessionBean.communicationFilterName}">
 <f:selectItems value="#{graphBean.filters}"/>
 <a4j:support event="onchange" reRender="outputImage" limitToList="true" ajaxSingle="true" ignoreDupResponses="true"/>
 <a4j:support event="onkeyup" reRender="outputImage" limitToList="true" ajaxSingle="true" ignoreDupResponses="true"/>
</h:selectOneListbox>

<a4j:outputPanel id="outputImage">
<a4j:mediaOutput createContent="#{graphBean.paint}" value="#{graphSessionBean.currentGraphAttributes}" mimeType="image/jpeg" id="output" element="img" cacheable="false" session="false"/>

When I change value of h:selectOneListbox, I want to reRender a4j:mediaOutput. Value of a4j:mediaOutput is the same, but #{graphBean.paint} is not called and in responce I have the same image.
</a4j:outputPanel>

[alexanderbelov]

Sorry.

<h:selectOneListbox size="1" id="currentFilters" value="#{graphSessionBean.communicationFilterName}">
 <f:selectItems value="#{graphBean.filters}"/>
 <a4j:support event="onchange" reRender="outputImage" limitToList="true" ajaxSingle="true" ignoreDupResponses="true"/>
 <a4j:support event="onkeyup" reRender="outputImage" limitToList="true" ajaxSingle="true" ignoreDupResponses="true"/>
</h:selectOneListbox>

<a4j:outputPanel id="outputImage">
<a4j:mediaOutput createContent="#{graphBean.paint}" value="#{graphSessionBean.currentGraphAttributes}" mimeType="image/jpeg" id="output" element="img" cacheable="false" session="false"/>
</a4j:outputPanel>

When I change value of h:selectOneListbox, I want to reRender a4j:mediaOutput. Value of a4j:mediaOut
put is the same, but #{graphBean.paint} is not called and in responce I have the same image.

[alexanderbelov]

I have tryed to change value of a4j:mediaOutput and now it works. Is it required to update component?

[alexanderbelov]

I cannot use value attribute only to paint image, because it must be short object. I take data from database. Is it possible to rerender a4j:mediaOutput without changing value?

[ilya_shaikovsky]

without changing its value - it will be cached. You should append some modificator to the value.

[alexanderbelov]

OK, thank you.