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I have this JSF table. I want to add row numbers.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
>
<h:head>
<h:outputStylesheet library="css" name="table-style.css" />
</h:head>
<h:body>
<h1>JSF 2 dataTable example</h1>
<h:form>
<h:dataTable value="#{order.orderList}" var="o"
styleClass="order-table"
headerClass="order-table-header"
rowClasses="order-table-odd-row,order-table-even-row"
>
<h:column>
<f:facet name="header">No</f:facet>
<h:inputText value="#{order.orderList.rowIndex + 1}" size="10" rendered="false" />
<h:outputText value="#{order.orderList.rowIndex + 1}" rendered="#{not order.orderList.rowIndex + 1}" />
</h:column>
<h:column>
<f:facet name="header">Order No</f:facet>
<h:inputText value="#{o.orderNo}" size="10" rendered="#{o.editable}" />
<h:outputText value="#{o.orderNo}" rendered="#{not o.editable}" />
</h:column>
<h:column>
<f:facet name="header">Product Name</f:facet>
<h:inputText value="#{o.productName}" size="20" rendered="#{o.editable}" />
<h:outputText value="#{o.productName}" rendered="#{not o.editable}" />
</h:column>
<h:column>
<f:facet name="header">Price</f:facet>
<h:inputText value="#{o.price}" size="10" rendered="#{o.editable}" />
<h:outputText value="#{o.price}" rendered="#{not o.editable}" />
</h:column>
<h:column>
<f:facet name="header">Quantity</f:facet>
<h:inputText value="#{o.qty}" size="5" rendered="#{o.editable}" />
<h:outputText value="#{o.qty}" rendered="#{not o.editable}" />
</h:column>
<h:column>
<f:facet name="header">Action</f:facet>
<h:commandLink value="Edit" action="#{order.editAction(o)}" rendered="#{not o.editable}" />
</h:column>
</h:dataTable>
<h:commandButton value="Save Changes" action="#{order.saveAction}" />
</h:form>
</h:body>
</html>
package com.mkyong;
import java.io.Serializable;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
@ManagedBean(name="order")
@SessionScoped
public class OrderBean implements Serializable{
private static final long serialVersionUID = 1L;
private static final ArrayList<Order> orderList =
new ArrayList<Order>(Arrays.asList(
new Order("A0001", "Intel CPU",
new BigDecimal("700.00"), 1),
new Order("A0002", "Harddisk 10TB",
new BigDecimal("500.00"), 2),
new Order("A0003", "Dell Laptop",
new BigDecimal("11600.00"), 8),
new Order("A0004", "Samsung LCD",
new BigDecimal("5200.00"), 3),
new Order("A0005", "A4Tech Mouse",
new BigDecimal("100.00"), 10)
));
public ArrayList<Order> getOrderList() {
return orderList;
}
public String saveAction() {
//get all existing value but set "editable" to false
for (Order order : orderList){
order.setEditable(false);
}
//return to current page
return null;
}
public String editAction(Order order) {
order.setEditable(true);
return null;
}
public static class Order{
String orderNo;
String productName;
BigDecimal price;
int qty;
boolean editable;
public Order(String orderNo, String productName, BigDecimal price, int qty) {
this.orderNo = orderNo;
this.productName = productName;
this.price = price;
this.qty = qty;
}
public boolean isEditable() {
return editable;
}
public void setEditable(boolean editable) {
this.editable = editable;
}
public String getOrderNo() {
return orderNo;
}
public void setOrderNo(String orderNo) {
this.orderNo = orderNo;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public BigDecimal getPrice() {
return price;
}
public void setPrice(BigDecimal price) {
this.price = price;
}
public int getQty() {
return qty;
}
public void setQty(int qty) {
this.qty = qty;
}
}
}
I added #{order.orderList.rowIndex + 1} in order to count the rows and display the number. But when I run the JSF page I get this error:
java.lang.NumberFormatException: For input string: "rowIndex"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:481)
at java.lang.Integer.parseInt(Integer.java:514)
at javax.el.ListELResolver.toInteger(ListELResolver.java:409)
at javax.el.ListELResolver.getValue(ListELResolver.java:202)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
at com.sun.el.parser.AstValue.getValue(AstValue.java:183)
at com.sun.el.parser.AstNot.getValue(AstNot.java:63)
at com.sun.el.parser.AstPlus.getValue(AstPlus.java:59)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:224)
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:413)
at javax.faces.component.UIData.iterate(UIData.java:1993)
at javax.faces.component.UIData.processDecodes(UIData.java:1161)
at javax.faces.component.UIForm.processDecodes(UIForm.java:225)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1176)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:933)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:679)
I think that rowIndex is not found. How I can fix this?
Regards
512
To display data table row number or get row index we have to use getRowIndex() method of javax. faces. model. DataModel class.
JSF <h:dataTable> Tag. It is used to create a data table.
JSF provides a rich control named DataTable to render and format html tables. DataTable can iterate over a collection or array of values to display data. DataTable provides attributes to modify its data in an easy way.
The rowIndex is a property of <h:dataTable> component itself, not of its java.util.List value.
<h:dataTable binding="#{table}" ...>
<h:column>#{table.rowIndex + 1}</h:column>
...
</h:dataTable>
The exception which you got is basically telling that you're attempting to access a List item by a string index like so orderList.get("rowIndex"), this is not valid. The only valid way to access a list item is using the brace notation like so #{order.orderList[0]} which resolves to orderList.get(0), but this is not what you need, after all.
An alternative is to wrap the orderList in a DataModel property and provide that as value instead, e.g.
<h:dataTable value="#{order.orderModel}" ...>
<h:column>#{order.orderModel.rowIndex + 1}</h:column>
...
</h:dataTable>
with
private transient DataModel orderModel;
public DataModel getOrderModel() {
if (orderModel == null) {
orderModel = new ListDataModel(orderList);
}
return orderModel;
}
It should be displayed for output only. It makes no sense to display it in an input component as it's not possible to set a sum as a single value expression. Also using it in the rendered attribute the way as you did is not valid as it doesn't return a boolean, but a long.
53
Another option is use List's indexOf() method:
<h:outputText value="#{order.orderList.indexOf(o) + 1}"/>
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