Add and Remove Columns (1)

A table built with the Grid component, including only the Person columns we want and adding a column, action.
First NameLast NameAction
dddd11 Spill View
fbfgsdgd tyuytuty View
Jack3 Sprat1 View
Mary Contrary View
References: Grid.


The source for IPersonFinderServiceLocal and @EJB is shown in the Session Beans and @EJB examples.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "">
<!-- We need a doctype to allow us to use special characters like &nbsp; 
     We use a "strict" DTD to make IE follow the alignment rules. -->
<html xmlns:t="" xmlns:p="tapestry:parameter">
<body class="container">
    <h3>Add and Remove Columns (1)</h3>
    A table built with the Grid component, including only the Person columns we want and adding a column, <em>action</em>.

    <div class="eg">
        <t:grid source="persons" row="person" include="firstName,lastName" add="action" rowsPerPage="4" pagerPosition="top">
                <t:pagelink page="examples/tables/AddAndRemoveColumns2" context="person.firstName" href="#">View</t:pagelink>

    <a href="">Grid</a>.<br/><br/>
    <t:pagelink page="Index">Home</t:pagelink><br/><br/>
    The source for IPersonFinderServiceLocal and @EJB is shown in the Session Beans and @EJB examples.<br/><br/>

        <t:sourcecodetab src="/web/src/main/java/jumpstart/web/pages/examples/tables/AddAndRemoveColumns1.tml"/>
        <t:sourcecodetab src="/web/src/main/java/jumpstart/web/pages/examples/tables/"/>
        <t:sourcecodetab src="/web/src/main/resources/META-INF/assets/css/examples/plain.css"/>
        <t:sourcecodetab src="/business/src/main/java/jumpstart/business/domain/person/"/>

package jumpstart.web.pages.examples.tables;

import java.util.List;

import javax.ejb.EJB;


import org.apache.tapestry5.annotations.Import;
import org.apache.tapestry5.annotations.Property;

@Import(stylesheet = "css/examples/plain.css")
public class AddAndRemoveColumns1 {
    static private final int MAX_RESULTS = 30;

    // Screen fields

    private List<Person> persons;
    private Person person;
    // Generally useful bits and pieces

    private IPersonFinderServiceLocal personFinderService;

    // The code
    void setupRender() {
        // Get all persons - ask business service to find them (from the database)
        persons = personFinderService.findPersons(MAX_RESULTS);

.eg {
                margin: 20px 0;
                padding: 14px;
                border: 1px solid #ddd;
                border-radius: 6px;
                -webkit-border-radius: 6px;
                -mox-border-radius: 6px;


import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

 * The Person entity.
public class Person implements Serializable {

    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(nullable = false)
    private Long id;

    @Column(nullable = false)
    private Integer version;

    @Column(length = 10, nullable = false)
    @Size(max = 10)
    private String firstName;

    @Column(length = 10, nullable = false)
    @Size(max = 10)
    private String lastName;
    private Regions region;

    private Date startDate;

    public String toString() {
        final String DIVIDER = ", ";
        StringBuilder buf = new StringBuilder();
        buf.append(this.getClass().getSimpleName() + ": ");
        buf.append("id=" + id + DIVIDER);
        buf.append("version=" + version + DIVIDER);
        buf.append("firstName=" + firstName + DIVIDER);
        buf.append("lastName=" + lastName + DIVIDER);
        buf.append("region=" + region + DIVIDER);
        buf.append("startDate=" + startDate);
        return buf.toString();

    // Default constructor is required by JPA.
    public Person() {

    public Person(String firstName, String lastName, Regions region, Date startDate) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.region = region;
        this.startDate = startDate;

    // The need for an equals() method is discussed at
    public boolean equals(Object obj) {
        return (obj == this) || (obj instanceof Person) && id != null && id.equals(((Person) obj).getId());

    // The need for a hashCode() method is discussed at

    public int hashCode() {
        return id == null ? super.hashCode() : id.hashCode();

    public void validate() throws ValidationException {


    public Long getId() {
        return id;

    public Integer getVersion() {
        return version;

    public void setVersion(Integer version) {
        this.version = version;

    public String getFirstName() {
        return firstName;

    public void setFirstName(String firstName) {
        this.firstName = firstName;

    public String getLastName() {
        return lastName;

    public void setLastName(String lastName) {
        this.lastName = lastName;

    public Regions getRegion() {
        return region;

    public void setRegion(Regions region) {
        this.region = region;

    public Date getStartDate() {
        return startDate;

    public void setStartDate(Date startDate) {
        this.startDate = startDate;