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RichFaces 面试题与答案

问题 6. How to different skins are runtime?

We can define an applications skin with EL expression like this:

Deine a session scoped skinBean and manage its currentSkin property at runtime with your skin names values. Every time a page is rendered, RichFaces will resolve the value in #{skinBean.currentSkin} to get the current skin. Changing Skins should not be done via AJAX but with a full page refresh. A full page refresh will ensure that all CSS links are correctly updated based on the new skin.

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问题 7. Tell me about a4j:outputPanel and ajaxRendered?

"ajaxRendered" attribute of the <a4j:outputPanel> set to "true" allows to define the area of the page that will be re-rendered even if it is not pointed in the reRender attribute explicitly. It might be useful if you have an area on a page that should be updated as a response on any Ajax request.

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问题 8. What is limitToList attribute?

"limitToList" attribute allows to dismiss the behavior of the <a4j:outputPanel> "ajaxRendered" attribute.

limitToList = "true" means to update only the area(s) that mentioned in the "reRender" attribute explicitly. All output panels with ajaxRendered="true" is ignored.

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问题 9. Give some examples of RichFaces Components.

Some components of RichFaces:

<rich:panel>

<rich:dataTable>

<rich:toolTip>

<rich:modalPanel>

<rich:separator>

<rich:spacer>

<rich:togglePanel>

<rich:tabPanel>

<rich:collapsiblePanel>

<rich:tooltip>

<rich:fileUpload>

<rich:calendar>

<rich:select>

<rich:tree>

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问题 10. Give some examples of a4j components.

Some examples of a4j components:

<a4j:commandLink>
<a4j:commandButton>
<a4j:outputPanel>
<a4j:region>
<a4j:mediaOutput>
<a4j:queue>

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