Ao filtrar livros pelo preço, estou recebendo o erro abaixo. Infelizmente não consegui descobrir sua causa. Agradeço quem puder me ajudar. O código não chega a executar a função precoEhMenor.
fev 21, 2017 11:18:46 AM com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException
GRAVE: Error Rendering View[/livro.xhtml]
javax.el.ELException: /livro.xhtml @116,72 filterFunction="livroBean.precoEhMenor": Cannot convert livroBean.precoEhMenor of type class java.lang.String to class java.lang.Integer
at com.sun.faces.facelets.el.TagMethodExpression.invoke(Unknown Source)
at org.primefaces.component.datatable.feature.FilterFeature.filter(FilterFeature.java:171)
at org.primefaces.component.datatable.feature.FilterFeature.encode(FilterFeature.java:120)
at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:80)
at javax.faces.component.UIComponentBase.encodeEnd(Unknown Source)
at javax.faces.component.UIComponent.encodeAll(Unknown Source)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(Unknown Source)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(Unknown Source)
at org.primefaces.component.api.UIData.visitTree(UIData.java:827)
at javax.faces.component.UIComponent.visitTree(Unknown Source)
at javax.faces.component.UIForm.visitTree(Unknown Source)
at javax.faces.component.UIComponent.visitTree(Unknown Source)
at javax.faces.component.UIComponent.visitTree(Unknown Source)
at com.sun.faces.context.PartialViewContextImpl.processComponents(Unknown Source)
at com.sun.faces.context.PartialViewContextImpl.processPartial(Unknown Source)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:57)
at javax.faces.component.UIViewRoot.encodeChildren(Unknown Source)
at javax.faces.component.UIComponent.encodeAll(Unknown Source)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(Unknown Source)
at com.sun.faces.application.view.MultiViewHandler.renderView(Unknown Source)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(Unknown Source)
at com.sun.faces.lifecycle.Phase.doPhase(Unknown Source)
at com.sun.faces.lifecycle.LifecycleImpl.render(Unknown Source)
at javax.faces.webapp.FacesServlet.service(Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:495)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:767)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1347)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
fev 21, 2017 11:18:46 AM com.sun.faces.context.AjaxExceptionHandlerImpl handlePartialResponseError
GRAVE: javax.el.ELException: /livro.xhtml @116,72 filterFunction="livroBean.precoEhMenor": Cannot convert livroBean.precoEhMenor of type class java.lang.String to class java.lang.Integer
at com.sun.faces.facelets.el.TagMethodExpression.invoke(Unknown Source)
at org.primefaces.component.datatable.feature.FilterFeature.filter(FilterFeature.java:171)
at org.primefaces.component.datatable.feature.FilterFeature.encode(FilterFeature.java:120)
at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:80)
at javax.faces.component.UIComponentBase.encodeEnd(Unknown Source)
at javax.faces.component.UIComponent.encodeAll(Unknown Source)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(Unknown Source)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(Unknown Source)
at org.primefaces.component.api.UIData.visitTree(UIData.java:827)
at javax.faces.component.UIComponent.visitTree(Unknown Source)
at javax.faces.component.UIForm.visitTree(Unknown Source)
at javax.faces.component.UIComponent.visitTree(Unknown Source)
at javax.faces.component.UIComponent.visitTree(Unknown Source)
at com.sun.faces.context.PartialViewContextImpl.processComponents(Unknown Source)
at com.sun.faces.context.PartialViewContextImpl.processPartial(Unknown Source)
at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:57)
at javax.faces.component.UIViewRoot.encodeChildren(Unknown Source)
at javax.faces.component.UIComponent.encodeAll(Unknown Source)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(Unknown Source)
at com.sun.faces.application.view.MultiViewHandler.renderView(Unknown Source)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(Unknown Source)
at com.sun.faces.lifecycle.Phase.doPhase(Unknown Source)
at com.sun.faces.lifecycle.LifecycleImpl.render(Unknown Source)
at javax.faces.webapp.FacesServlet.service(Unknown Source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:495)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:767)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1347)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)Abaixo o código do método
public boolean precoEhMenor(Object valorColuna, Object filtroDigitado, Locale locate) {
// tirando espaços do filtro
String textoDigitado = (filtroDigitado == null) ? null : filtroDigitado.toString().trim();
System.out.println("Filtrando pelo " + textoDigitado + ", Valor do elemento: " + valorColuna);
// o filtro é nulo ou vazio?
if (textoDigitado == null || textoDigitado.equals("")) {
return true;
}
// elemento da tabela é nulo?
if (valorColuna == null) {
return false;
}
try {
// fazendo o parsing do filtro para converter para Double
Double precoDigitado = Double.valueOf(textoDigitado);
Double precoColuna = (Double) valorColuna;
// comparando os valores, compareTo devolve um valor negativo se o
// value é menor do que o filtro
return precoColuna.compareTo(precoDigitado) < 0;
} catch (NumberFormatException e) {
// usuario nao digitou um numero
return false;
}
}Abaixo a página livro.xhtml
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<ui:composition template="_template.xhtml">
<f:metadata>
<f:viewParam name="livroId" value="#{livroBean.livro.id}" />
<f:viewAction action="#{livroBean.carregaPelaId}"
if="#{param.livroId != null}"></f:viewAction>
</f:metadata>
<ui:define name="titulo">
<p:panelGrid>Novo Livro</p:panelGrid>
</ui:define>
<ui:define name="conteudo">
<h:form>
<p:messages id="mensagens" />
<br />
<p:fieldset legend="Dados do Livro">
<p:panelGrid columns="2">
<p:outputLabel value="Titulo:" for="titulo" />
<p:inputText id="titulo" value="#{livroBean.livro.titulo}"
required="true" requiredMessage="Título obrigatório!"
validatorMessage="Título não pode ser superior a 40 caracteres">
<f:validateLength maximum="40" />
<f:ajax execute="titulo" render="mensagens" event="blur" />
</p:inputText>
<p:outputLabel value="ISBN:" for="isbn" />
<p:inputMask id="isbn" value="#{livroBean.livro.isbn}"
mask="999-9-99-999999-9"
validator="#{livroBean.comecaComDigitoUm}">
<f:ajax execute="isbn" render="mensagens" event="keypress" />
</p:inputMask>
<p:outputLabel value="Preço:" for="preco" />
<p:inputNumber id="preco" value="#{livroBean.livro.preco}"
validatorMessage="Valor deve estar entre R$1.00 e R$1000.00"
symbol="R$" symbolPosition="p" decimalSeparator=","
thousandSeparator=".">
<f:validateDoubleRange minimum="1.00" maximum="1000.00" />
</p:inputNumber>
<p:outputLabel value="Data de Lançamento:" for="dataLancamento" />
<p:calendar id="dataLancamento" pattern="dd/MM/yyyy"
value="#{livroBean.livro.dataLancamento.time}">
<f:passThroughAttribute name="type" value="date" />
<f:passThroughAttribute name="required" value="true" />
<f:convertDateTime pattern="dd/MM/yyyy" />
</p:calendar>
</p:panelGrid>
</p:fieldset>
<br />
<p:fieldset legend="Dados do Autor">
<p:panelGrid columns="4" styleClass="ui-noborder">
<p:outputLabel value="Selecione o Autor:" for="autor" />
<p:selectOneMenu value="#{livroBean.autorId}" id="autor">
<f:selectItems value="#{livroBean.autores}" var="autor"
itemLabel="#{autor.nome}" itemValue="#{autor.id}" />
</p:selectOneMenu>
<p:commandButton value="Gravar Autor" icon="fa fa-plus"
action="#{livroBean.gravarAutor}" process="@this autor"
update="tabelaAutores">
</p:commandButton>
<p:commandLink value="Cadastrar novo autor"
action="autor?faces-redirect=true" immediate="true" />
</p:panelGrid>
<p:dataList id="tabelaAutores" title="Autores do Livro"
emptyMessage="Nenhum autor cadastrado para o livro"
value="#{livroBean.autoresDoLivro}" var="autor" type="unordered"
itemStyleClass="fa fa-arrow-circle-right">
<f:facet name="header">Autores do Livro</f:facet>
#{autor.nome}
<p:commandLink styleClass="fa fa-fw fa-remove"
style="text-decoration:none"
action="#{livroBean.removerAutorDoLivro(autor)}" process="@this"
update="tabelaAutores" />
</p:dataList>
</p:fieldset>
<br />
<h:commandButton value="Gravar" action="#{livroBean.gravar}">
<!-- <f:ajax execute="@form" render="@form :formTabelaLivros:tabelaLivros" /> -->
</h:commandButton>
<br />
</h:form>
<br />
<h:form id="formTabelaLivros">
<p:dataTable id="tabelaLivros" value="#{livroBean.livros}"
var="livro" paginator="true" rows="5">
<f:facet name="header">Livros</f:facet>
<p:column headerText="Título" sortBy="#{livro.titulo}"
filterBy="#{livro.titulo}" filterMatchMode="startsWith">
<p:outputLabel value="#{livro.titulo}" />
</p:column>
<p:column headerText="ISBN" sortBy="#{livro.isbn}"
filterBy="#{livro.isbn}" filterMatchMode="contains">
<p:outputLabel value="#{livro.isbn}" />
</p:column>
<p:column headerText="Preço" sortBy="#{livro.preco}"
filterBy="#{livro.preco}" filterFunction="livroBean.precoEhMenor">
<h:outputText value="#{livro.preco}">
<f:convertNumber type="currency" pattern="R$ #0.00"
currencySymbol="R$" locale="pt_BR" />
</h:outputText>
</p:column>
<p:column headerText="Data Lançamento"
sortBy="#{livro.dataLancamento.time}"
filterBy="#{livro.dataLancamento.time}" filterMatchMode="contains">
<p:outputLabel value="#{livro.dataLancamento.time}">
<f:convertDateTime pattern="dd/MM/yyyy" />
</p:outputLabel>
</p:column>
<p:column headerText="Alterar">
<h:commandLink value="Alterar"
action="#{livroBean.carregar(livro)}" />
</p:column>
<p:column headerText="Remover">
<h:commandLink value="Remover" action="#{livroBean.remover(livro)}"></h:commandLink>
</p:column>
</p:dataTable>
</h:form>
</ui:define>
<ui:define name="textoRodape">
Cadastro de Livros
</ui:define>
</ui:composition>
</html>