Ordenar dataTable Facelets

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
	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:c="http://java.sun.com/jstl/core"
	xmlns:t="http://myfaces.apache.org/tomahawk"
	xmlns:a4j="https://ajax4jsf.dev.java.net/ajax"
	template="/templates/template.xhtml">

	<ui:define name="title">PatrimonioWeb :: Lista Patrimônios</ui:define>
	<ui:define name="body">Lista dos Patrimônios<br />
		<h:form>
			<h:dataTable width="85%" value="#{controlePatrimonio.todos}"
				var="patrimonio">

				<tr>
				<!-- <h:column>
						<f:facet name="header">Funcionário</f:facet>
				#{patrimonio.funcionario}</h:column>
					<h:column>-->
					
					 <h:column>
						<f:facet name="header">Funcionário</f:facet>
				#{patrimonio.funcionario.pessoaFisica.pessoa.nome}</h:column>
					<h:column>
					
						<f:facet name="header">Tombo</f:facet>
				#{patrimonio.tombo}</h:column>
					<h:column>
						<f:facet name="header">Produto</f:facet>
				#{patrimonio.produto.nome} #{patrimonio.produto.descricao}</h:column>
					<h:column>
						<f:facet name="header">Serial</f:facet>
				#{patrimonio.serial}</h:column>
					<h:column>
						<f:facet name="header">Setor</f:facet>
				#{patrimonio.setor}</h:column>
					<h:column>
						<f:facet name="header">Data</f:facet>
						<h:outputText value="#{patrimonio.data}">
							<f:convertDateTime pattern="dd/MM/yyyy" />
						</h:outputText>
					</h:column>
					<h:column>
						<f:facet name="header">Nota Fiscal</f:facet>
				#{patrimonio.notaFiscal}</h:column>
				
					<h:column>
						<f:facet name="header">Situação</f:facet>
				#{patrimonio.situacao.descricao}</h:column>
					<h:column>
						<f:facet name="header">Observação</f:facet>
				#{patrimonio.observacao}</h:column>

					<h:column>
						<h:commandLink action="#{controlePatrimonio.editar}">
							<f:setPropertyActionListener value="#{patrimonio}"
								target="#{controlePatrimonio.patrimonio}" />Editar</h:commandLink>
					</h:column>
					<h:column>
						<h:commandLink action="#{controlePatrimonio.excluir}">
							<f:setPropertyActionListener value="#{patrimonio}"
								target="#{controlePatrimonio.patrimonio}" />Excluir</h:commandLink>
					</h:column>
				</tr>

			</h:dataTable>
		</h:form>

	</ui:define>
</ui:composition>