Given the model you presented in the first post, your problem seems to be that the posted values have not the correct name for the children's form fields. The parameters names you would need are
id name values[0].id values[0].name values[1].id values[2].name ... for the parameters interceptor to work properly when applying the posted values. See here for more details: http://struts.apache.org/2.1.8/docs/tabular-inputs.html - René bruno grandjean schrieb: > Dear Rene, > > Thks a lot for replying to me because I am feeling a little bit alone with > my CRUD ;-). In fact I am trying to build a dynamic MetaCrud. > My pb is simple: in the same jsp page I would like to update a Parent > object > and its Childs (values): > > <s:form action="saveOrUpdateParent"> > <s:push value="parent"> > <s:hidden name="id" /> <s:textfield > name="name" label="Nom" /> > <s:push value="values"> > <s:iterator id="p" value="values"> > <s:textfield label="Nom" name="#name" value="%{name}"/> > </s:iterator> > </s:push> > <s:submit /> > </s:push> > </s:form> > > From an existing Parent object with many Childs objects I can easily modify > parent.name for instance but the collection of Child objects (values) is > always empty in the ParentAction (saveOrUpdate() method) after submitting. > However I can display each values[i].name in the jsp page with the correct > value. > So it is not an issue with Hibernate but with the jsp or ModelDriven > interface I don't know..Do you have any idea? > Basically I was not able to find a struts or spring documentation about > CRUD > & association between two entities on the same jsp page. > best regards > bruno > > > > -------------------------------------------------- > From: "Rene Gielen" <gie...@it-neering.net> > Sent: Wednesday, March 31, 2010 7:12 PM > To: "Struts Users Mailing List" <user@struts.apache.org> > Subject: Re: CRUD with a OneToMany association under Struts 2 / Hibernate 3 > >> I'm not sure if I understand what your actual question is, nor whether >> it is particularly Struts 2 related (rather than just Hibernate) - but >> you might want to have a look in the CRUD demo section of the Struts 2 >> showcase application. Maybe you will also find this demo useful: >> http://github.com/rgielen/struts2crudevolutiondemo >> >> - René >> >> bruno grandjean schrieb: >>> Hi >>> >>> I am trying to implement a simple CRUD with a OneToMany association >>> under Struts 2 / Hibernate 3. >>> I have two entities Parent and 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; >>> .. >>> >>> I can easily create, delete Parent or read the Child Set (values) but >>> it is impossible to update 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; >>> } >>> @ManyToMany(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> >>> >> >> -- >> René Gielen >> IT-Neering.net >> Saarstrasse 100, 52062 Aachen, Germany >> Tel: +49-(0)241-4010770 >> Fax: +49-(0)241-4010771 >> Cel: +49-(0)163-2844164 >> http://twitter.com/rgielen >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@struts.apache.org >> For additional commands, e-mail: user-h...@struts.apache.org >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > For additional commands, e-mail: user-h...@struts.apache.org > -- René Gielen IT-Neering.net Saarstrasse 100, 52062 Aachen, Germany Tel: +49-(0)241-4010770 Fax: +49-(0)241-4010771 Cel: +49-(0)163-2844164 http://twitter.com/rgielen --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
