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Ajax Framework - Fragment

Fragment component is used to define automatically partially process and update sections whenever ajax request is triggered by a descandant component. In this example, required input field outside the fragment is ignored and only the contents of the fragment are processed-updated automatically on button click since button is inside the fragment. Fragment makes it easy to define partial ajax process and update without explicitly defining component identifiers.

Documentation 
<h:form>
    <h:panelGrid columns="2" cellpadding="5">
        <p:outputLabel for="ignored" value="Required" />
        <p:inputText id="ignored" required="true" />
    </h:panelGrid>

    <p:fragment>
        <p:autoUpdate />
        <h:panelGrid columns="4" cellpadding="5">
            <p:outputLabel for="txt" value="Text Value:" />
            <p:inputText id="txt" value="#{basicView.text}" />
            <p:commandButton value="Submit"/>
            <h:outputText value="#{basicView.text}" />
        </h:panelGrid>
    </p:fragment>
</h:form>

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