JSF - Edit Data of a DataTable


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In this section, we'll showcase the adding editing capability to a row in a dataTable.

Example Application

Let us create a test JSF application to test the above functionality.

Step Description
1 Create a project with a name helloworld under a package com.tutorialspoint.test as explained in the JSF - Display DataTable sub-chapter of JSF - Data Tables chapter.
2 Modify home.xhtml as explained below. Keep the rest of the files unchanged.
3 Compile and run the application to make sure the business logic is working as per the requirements.
4 Finally, build the application in the form of war file and deploy it in Apache Tomcat Webserver.
5 Launch your web application using appropriate URL as explained below in the last step.

home.xhtml

<?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">
   
   <h:head>
      <title>JSF tutorial</title>		
      <h:outputStylesheet library = "css" name = "styles.css"  /> 	
   </h:head>
   
   <h:body> 
      <h2>DataTable Example</h2>
      
      <h:form>
         <h:dataTable value = "#{userData.employees}" var = "employee"
            styleClass = "employeeTable"
            headerClass = "employeeTableHeader"
            rowClasses = "employeeTableOddRow,employeeTableEvenRow">
            
            <h:column>    				
               <f:facet name = "header">Name</f:facet>    				
               <h:inputText value = "#{employee.name}"
                  size = "10" rendered = "#{employee.canEdit}" />
               <h:outputText value = "#{employee.name}"
                  rendered = "#{not employee.canEdit}" />
            </h:column>
            
            <h:column>
               <f:facet name = "header">Department</f:facet>
               <h:inputText value = "#{employee.department}" 
                  size = "20" rendered = "#{employee.canEdit}" />
               <h:outputText value = "#{employee.department}" 
                  rendered = "#{not employee.canEdit}" />
            </h:column>
            
            <h:column>
               <f:facet name = "header">Age</f:facet>
               <h:inputText value = "#{employee.age}" size = "5"
                  rendered = "#{employee.canEdit}" />
               <h:outputText value = "#{employee.age}" 
                  rendered = "#{not employee.canEdit}" />
            </h:column>
            
            <h:column>
               <f:facet name = "header">Salary</f:facet>
               <h:inputText value = "#{employee.salary}" 
                  size = "5" rendered = "#{employee.canEdit}" />
               <h:outputText value = "#{employee.salary}" 
                  rendered = "#{not employee.canEdit}" />
            </h:column>
            
            <h:column>
               <f:facet name = "header">Edit</f:facet>
               <h:commandButton value = "Edit" 
                  action = "#{userData.editEmployee}" 
                  rendered = "#{not employee.canEdit}">        
                  <f:setPropertyActionListener 
                  target = "#{userData.employee}" value = "#{employee}" />
               </h:commandButton>
            </h:column>
         </h:dataTable>  
         <br/>
         
         <h:commandButton value = "Save Employees"
            action = "#{userData.saveEmployees}" />	  
      </h:form>
   
   </h:body>
</html>

Once you are ready with all the changes done, let us compile and run the application as we did in JSF - First Application chapter. If everything is fine with your application, this will produce the following result.

JSF Edit Data of datatable

Click the edit button of any row. Following will be the output.

JSF Edit Data of datatable1

Click Save Employees button to save the edit. Following will be the output.

JSF Edit Data of datatable2
jsf_data_tables.htm

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