PersonUpdate.tml


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- 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="http://tapestry.apache.org/schema/tapestry_5_3.xsd" xmlns:p="tapestry:parameter">
<head>
    <link rel="stylesheet" type="text/css" href="${context:css/together/easycrudedit.css}"/>
</head>
<body>
    <h1>Update</h1>
    
    <div class="eg">
        <t:if test="person">
            <t:beaneditform t:id="personForm" object="person" submitLabel="Save">[BeanEditForm here]
                <!-- If optimistic locking is not needed then comment out this next bit. It works because Hidden fields are part of the submit. -->
                <p:version>
                    <t:hidden value="person.version"/>
                </p:version>
            </t:beaneditform><br/>
        </t:if>
        <t:if negate="true" test="person">
            Person ${personId} does not exist.<br/><br/>
        </t:if>
    
        <a t:type="pageLink" t:page="together/easycrud/Persons" href="#">Cancel</a>
    </div>

    <a t:type="pageLink" t:page="Index" href="#">Home</a><br/><br/>
    
    The source for PersonFinderService, @EJB handling, etc. is shown in the @EJB example.<br/><br/>

    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/pages/together/easycrud/person/PersonUpdate.tml"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/pages/together/easycrud/person/PersonUpdate.java"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/css/together/easycrudedit.css"/>
    <t:sourcecodedisplay src="/business/src/main/java/jumpstart/business/domain/person/Person.java"/>
    <t:sourcecodedisplay src="/business/src/main/java/jumpstart/business/domain/person/Regions.java"/>
</body>
</html>

PersonUpdate.java


package jumpstart.web.pages.together.easycrud.person;

import javax.ejb.EJB;

import jumpstart.business.domain.person.Person;
import jumpstart.business.domain.person.iface.IPersonFinderServiceLocal;
import jumpstart.business.domain.person.iface.IPersonManagerServiceLocal;
import jumpstart.util.ExceptionUtil;
import jumpstart.web.pages.together.easycrud.Persons;

import org.apache.tapestry5.PersistenceConstants;
import org.apache.tapestry5.annotations.Component;
import org.apache.tapestry5.annotations.InjectPage;
import org.apache.tapestry5.annotations.Persist;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.corelib.components.BeanEditForm;

public class PersonUpdate {

    // The activation context

    @Property
    private Long personId;

    // Screen fields

    @Property
    private Person person;

    // Work fields

    // This carries version through the redirect that follows a server-side validation failure.
    @Persist(PersistenceConstants.FLASH)
    private Integer versionFlash;

    // Other pages

    @InjectPage
    private Persons indexPage;

    // Generally useful bits and pieces

    @Component(id = "personForm")
    private BeanEditForm personForm;

    @EJB
    private IPersonFinderServiceLocal personFinderService;

    @EJB
    private IPersonManagerServiceLocal personManagerService;

    // The code

    // onPassivate() is called by Tapestry to get the activation context to put in the URL.

    Long onPassivate() {
        return personId;
    }

    // onActivate() is called by Tapestry to pass in the activation context from the URL.

    void onActivate(Long personId) {
        this.personId = personId;
    }

    // setupRender() is called by Tapestry right before it starts rendering the page.

    void setupRender() {

        // We're doing this here instead of in onPrepareForRender() because person is used outside the form.

        person = personFinderService.findPerson(personId);
        // Handle null person in the template.

    }

    // PersonForm bubbles up the PREPARE_FOR_RENDER event during form render.

    void onPrepareForRender() {

        // If the form has errors then we're redisplaying after a redirect.
        // Form will restore your input values but it's up to us to restore Hidden values.

        if (personForm.getHasErrors()) {
            if (person != null) {
                person.setVersion(versionFlash);
            }
        }
    }

    // PersonForm bubbles up the PREPARE_FOR_SUBMIT event during form submission.

    void onPrepareForSubmit() {
        // Get objects for the form fields to overlay.
        person = personFinderService.findPerson(personId);

        if (person == null) {
            person = new Person();
            // Unfortunately this form error message will never be displayed because we can't do <t:if test="user>
            // INSIDE the BeanEditForm.
            personForm.recordError("Person has been deleted by another process.");
        }
    }

    // PersonForm bubbles up the VALIDATE event when it is submitted

    void onValidateFromPersonForm() {

        if (personForm.getHasErrors()) {
            // We get here only if a server-side validator detected an error.
            return;
        }

        try {
            personManagerService.changePerson(person);
        }
        catch (Exception e) {
            // Display the cause. In a real system we would try harder to get a user-friendly message.
            personForm.recordError(ExceptionUtil.getRootCauseMessage(e));
        }
    }

    // PersonForm bubbles up SUCCESS or FAILURE when it is submitted, depending on whether VALIDATE records an error

    Object onSuccess() {
        return indexPage;
    }

    void onFailure() {
        versionFlash = person.getVersion();
    }
}

easycrudedit.css


body, td        { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-weight: normal; color: #333;
                    line-height: 17px; }

.eg             { margin: 20px 0; padding: 20px; 
                    border: 1px solid #ddd; border-radius: 4px; -webkit-border-radius: 4px; -mox-border-radius: 4px; }
.eg form        { margin: 0; color: #999; }

a               { text-decoration: none; color: #3D69B6; }
a:hover         { text-decoration: underline; }

.eg div.t-beaneditor        { font-family: Arial, Helvetica, sans-serif; font-size: 13px; }
.eg div.t-beaneditor label  { padding-top: 5px; }

Person.java


package jumpstart.business.domain.person;

import java.io.Serializable;
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;


/**
 * The Person entity.
 */
@Entity
@SuppressWarnings("serial")
public class Person implements Serializable {

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

    @Version
    @Column(nullable = false)
    private Integer version;

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

    @Column(length = 10, nullable = false)
    private String lastName;
    
    @Enumerated(EnumType.STRING)
    private Regions region;

    @Temporal(TemporalType.DATE)
    private Date startDate;

    public String toString() {
        final String DIVIDER = ", ";
        
        StringBuilder buf = new StringBuilder();
        buf.append(this.getClass().getSimpleName() + ": ");
        buf.append("[");
        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);
        buf.append("]");
        return buf.toString();
    }

    // Default constructor is required by EJB3.
    public Person() {
    }

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

    // The need for an equals() method is discussed at http://www.hibernate.org/109.html
    
    @Override
    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 http://www.hibernate.org/109.html

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

    @PrePersist
    @PreUpdate
    public void validate() throws ValidationException {

        // Validate syntax...

        if ((firstName == null) || (firstName.trim().length() == 0)) {
            throw new ValidationException("First name is required.");
        }

        if ((lastName == null) || (lastName.trim().length() == 0)) {
            throw new ValidationException("Last name is required.");
        }

        if (region == null) {
            throw new ValidationException("Region is required.");
        }

        if (startDate == null) {
            throw new ValidationException("Start date is required.");
        }

    }

    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;
    }

}