JSF-DataTableでDataModelを使用する

このセクションでは、dataTableでのデータモデルの使用を紹介します。

応用例

上記の機能をテストするためのテストJSFアプリケーションを作成しましょう。

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

UserData.java

package com.finddevguides.test;

import java.io.Serializable;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.model.ArrayDataModel;
import javax.faces.model.DataModel;

@ManagedBean(name = "userData", eager = true)
@SessionScoped
public class UserData implements Serializable {
   private static final long serialVersionUID = 1L;

   private static final Employee[] employees =  new Employee[] {
      new Employee("John", "Marketing", 30,2000.00),
      new Employee("Robert", "Marketing", 35,3000.00),
      new Employee("Mark", "Sales", 25,2500.00),
      new Employee("Chris", "Marketing", 33,2500.00),
      new Employee("Peter", "Customer Care", 20,1500.00)
   };

   private DataModel<Employee> employeeDataModel
      = new ArrayDataModel<Employee>(employees);

   public DataModel<Employee> getEmployees() {
      return employeeDataModel;
   }
}

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">Sr. No</f:facet>
               #{userData.employees.rowIndex + 1}
            </h:column>

            <h:column>
               <f:facet name = "header">Name</f:facet>
               #{employee.name}
            </h:column>

            <h:column>
               <f:facet name = "header">Department</f:facet>
               #{employee.department}
            </h:column>

            <h:column>
               <f:facet name = "header">Age</f:facet>
               #{employee.age}
            </h:column>

            <h:column>
               <f:facet name = "header">Salary</f:facet>
               #{employee.salary}
            </h:column>
         </h:dataTable>
      </h:form>

   </h:body>
</html>

すべての変更を完了したら、JSF-最初のアプリケーションの章で行ったようにアプリケーションをコンパイルして実行します。すべてがアプリケーションで問題ない場合、次の結果が生成されます。

データテーブルでModelDataを使用するJSF

Jsf-using-datamodel

JSF-DataTableでDataModelを使用する

応用例

UserData.java

home.xhtml

目次