Olá amigos, to com um probleminha no JSF, eu excluo um item e depois dou um F5 e ele volta no dataTable mas no banco ele não existe mais, fica só na memoria, como posso resolver isso, segue código.
<?xml version="1.0" encoding="UTF-8"?>
<!--
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and open the template in the editor.
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<ui:composition
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:rich="http://richfaces.org/rich"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:ajx="http://richfaces.ajax4jsf.org/rich"
xmlns:fn="http://java.sun.com/jsp/jstl/functions">
<f:view>
<a4j:form id="formItemController">
<!--para exibir array de items-->
<h:panelGrid>
<a4j:outputPanel rendered="#{itemController.items != null}">
<rich:dataTable value="#{itemController.items}" var="it" rows="5" id="dtItemController"
onRowMouseOver="this.style.backgroundColor='#F1F1F1'"
onRowMouseOut="this.style.backgroundColor='#{a4jSkin.tableBackgroundColor}'">
<!--cabeçalho padrao-->
<f:facet name="header">
<rich:columnGroup>
<rich:column colspan="5">Lista de Items</rich:column>
<rich:column breakBefore="true">
<h:outputText value="Código"/>
</rich:column>
<rich:column sortBy="#{it.itemDescricao}" filterBy="#{it.itemDescricao}"
filterEvent="onclick"><h:outputText value="Descrição" /></rich:column>
<rich:column><h:outputText value="Preço"/></rich:column>
<rich:column><h:outputText value="Altera"/></rich:column>
<rich:column><h:outputText value="Excluí"/></rich:column>
</rich:columnGroup>
</f:facet>
<rich:column><h:outputText value="#{it.itemCodigo}"/></rich:column>
<rich:column><h:outputText value="#{it.itemDescricao}"/></rich:column>
<rich:column><h:outputText value="#{it.itemPreco}"/></rich:column>
<rich:column>
<a4j:commandButton value="Editar" action="#{itemController.altera}" >
<f:setPropertyActionListener value="#{it}" target="#{itemController.itemBean}" />
</a4j:commandButton>
</rich:column>
<rich:column>
<a4j:commandButton value="Excluir" action="#{itemController.exclui}" reRender="formItemController">
<f:setPropertyActionListener value="#{it}" target="#{itemController.itemBean}"/>
</a4j:commandButton>
</rich:column>
<!--paginação do grid-->
<f:facet name="footer">
<rich:datascroller for="dtItemController" maxPages="20" renderIfSinglePage="false" />
</f:facet>
</rich:dataTable>
</a4j:outputPanel>
<h:outputText rendered="#{itemController.items == null}" value="Nenhum Item Cadastrado!"/>
</h:panelGrid>
<h:commandButton action="#{itemController.addItem}" value="Cadastrar Items"/>
</a4j:form>
</f:view>
</ui:composition>
