Bonjour

je suis en train d'ssayer d'implémenter un CRUD avec une assocation OneToMany sous Struts 2 / Hibernate 3.
j'ai deux entities Parent et Child:

@Entity
@Table(name="PARENT")
public class Parent {
private Long id;
private Set<Child> values = new HashSet<Child>();
..
@Entity
@Table(name="CHILD")
public class Child {
private Long id;
private String name;
..

Je peux facilement créer supprimer un Parent ou lire un Child Set (values) ma Child Set.
The jsp page (see below) reinit the values Set, no record after updating!
Could u explain to me what's wrong?

here are my code:

@Entity
@Table(name="PARENT")
public class Parent {
private Long id;
private Set<Child> values = new HashSet<Child>();
@Id
@GeneratedValue
@Column(name="PARENT_ID")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@OneToMany(fetch = FetchType.EAGER)
@JoinTable(name = "PARENT_CHILD", joinColumns = { @JoinColumn(name = "PARENT_ID") }, inverseJoinColumns = { @JoinColumn(name = "CHILD_ID") })
public Set<Child> getValues() {
return values;
}
public void setValues(Set<Child> lst) {
values = lst;
}
}

@Entity
@Table(name="CHILD")
public class Child {
private Long id;
private String name;
@Id
@GeneratedValue
@Column(name="CHILD_ID")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Column(name="NAME")
public String getName() {
return name;
}
public void setName(String val) {
name = val;
}
}

public interface ParentDAO {
public void saveOrUpdateParent(Parent cl);
public void saveParent(Parent cl);
public List<Parent> listParent();
public Parent listParentById(Long clId);
public void deleteParent(Long clId);
}

public class ParentDAOImpl implements ParentDAO {
@SessionTarget
Session session;
@TransactionTarget
Transaction transaction;

@Override
public void saveOrUpdateParent(Parent cl) {
try {
session.saveOrUpdate(cl);
} catch (Exception e) {
transaction.rollback();
e.printStackTrace();
}
}

@Override
public void saveParent(Parent cl) {
try {
session.save(cl);
} catch (Exception e) {
transaction.rollback();
e.printStackTrace();
}
}

@Override
public void deleteParent(Long clId) {
try {
Parent cl = (Parent) session.get(Parent.class, clId);
session.delete(cl);
} catch (Exception e) {
transaction.rollback();
e.printStackTrace();
}
}

@SuppressWarnings("unchecked")
@Override
public List<Parent> listParent() {
List<Parent> courses = null;
try {
courses = session.createQuery("from Parent").list();
} catch (Exception e) {
e.printStackTrace();
}
return courses;
}

@Override
public Parent listParentById(Long clId) {
Parent cl = null;
try {
cl = (Parent) session.get(Parent.class, clId);
} catch (Exception e) {
e.printStackTrace();
}
return cl;
}
}

public class ParentAction extends ActionSupport implements ModelDriven<Parent> {

private static final long serialVersionUID = -2662966220408285700L;
private Parent cl = new Parent();
private List<Parent> clList = new ArrayList<Parent>();
private ParentDAO clDAO = new ParentDAOImpl();

@Override
public Parent getModel() {
return cl;
}

public String saveOrUpdate()
{
clDAO.saveOrUpdateParent(cl);
return SUCCESS;
}

public String save()
{
clDAO.saveParent(cl);
return SUCCESS;
}

public String list()
{
clList = clDAO.listParent();
return SUCCESS;
}

public String delete()
{
HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
clDAO.deleteParent(Long.parseLong(request.getParameter("id")));
return SUCCESS;
}

public String edit()
{
HttpServletRequest request = (HttpServletRequest) ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);
cl = clDAO.listParentById(Long.parseLong(request.getParameter("id")));
return SUCCESS;
}

public Parent getParent() {
return cl;
}

public void setParent(Parent cl) {
this.cl = cl;
}

public List<Parent> getParentList() {
return clList;
}

public void setParentList(List<Parent> clList) {
this.clList = clList;
}
}

and finally the jsp page:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="/struts-tags" prefix="s"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Parent Registration Page</title>
<s:head />
<style type="text/css">
@import url(style.css);
</style>
</head>
<body>
<s:form action="saveOrUpdateParent">
<s:push value="parent">
<s:hidden name="id" />
<s:push value="values">
<s:iterator id="p" value="values">
<s:textfield label="Nom" name="values(%{id}).name" value="%{name}"/>
</s:iterator>
</s:push>
<s:submit />
</s:push>
</s:form>

<s:if test="parentList.size() > 0">
<div class="content">
<table class="userTable" cellpadding="5px">
<tr class="even">
<th>Child(s)</th>
</tr>
<s:iterator value="parentList" status="userStatus">
<tr
class="<s:if test="#userStatus.odd == true ">odd</s:if><s:else>even</s:else>">
<td><s:property value="values.size()" /></td>
<s:iterator value="values">
<td><s:property value="name" /></td>
</s:iterator>
<td><s:url id="editURL" action="editParent">
<s:param name="id" value="%{id}"></s:param>
</s:url> <s:a href="%{editURL}">Edit</s:a></td>
<td><s:url id="deleteURL" action="deleteParent">
<s:param name="id" value="%{id}"></s:param>
</s:url> <s:a href="%{deleteURL}">Delete</s:a></td>
</tr>
</s:iterator>
</table>
</div>
</s:if>
</body>
</html>