11:58 a.m.
I have the following simple scenario (a modification of the booking example): An
aggregate entity, Business, with OneToMany relationships with Address, Contact, and
Opportunity. For managing Business, I have a Conversation scoped Stateful Session
Bean/Seam Component, that also models an Address, a Contact, and an Opportunity (so that
one may be selected and acted upon).
Another Stateful Session Bean is used for each of CreateAddress, CreateContact, and
CreateOpportunity. No matter what combination of annotations/code I use, the Seam Entity
objects already visible in the parent conversation are found, and injected into the
CreateXYZ Converstation, and the form is filled in with the existing values.
In the CreateXYZ form, specifically selecting form values not associated with the
parent's Object, but instead with the CreateXYZ Object/Action leads to a "Error
model data update." Using form values directly from the XYZ Entity leads Seam to
inject the existing Entity from the Parent's conversation.
Attempts to reassign the @In XYZ object within the CreateXYZ Stateful Session Seam
Component lead to a derived object not being properly created as a member of Parent
(Business') Collection(s).
In the listings below, I have attempted to omit extraneous information. Consequently,
please forgive omissions not related to the issue at hand.
Thank You, Adam
| @Entity
| @Name("business")
| public class Business implements Serializable {
|
| private long id;
|
| private Collection<Address> addresses = new ArrayList<Address>();
|
| private Collection<Contact> contacts = new ArrayList<Contact>();
|
| private Collection<Opportunity> opportunities = new
ArrayList<Opportunity>();
|
| public Business() {
|
| }
|
| @Id @GeneratedValue
| public long getId() {
| return id;
| }
|
| public void setId(long id) {
| this.id = id;
| }
|
|
| @OneToMany(cascade={CascadeType.PERSIST,CascadeType.MERGE},fetch=FetchType.LAZY)
| public Collection<Address> getAddresses() {
| return addresses;
| }
|
| public void setAddresses(Collection<Address> addresses) {
| this.addresses = addresses;
| }
|
| @OneToMany(cascade={CascadeType.PERSIST,CascadeType.MERGE},fetch=FetchType.LAZY)
| public Collection<Contact> getContacts() {
| return contacts;
| }
|
| public void setContacts(Collection<Contact> contacts) {
| this.contacts = contacts;
| }
| @OneToMany(cascade={CascadeType.PERSIST,CascadeType.MERGE},fetch=FetchType.LAZY)
| public Collection<Opportunity> getOpportunities() {
| return opportunities;
| }
|
| public void setOpportunities(Collection<Opportunity> opportunities) {
| this.opportunities = opportunities;
| }
|
|
| @Override
| public String toString() {
| return "Business(" + id + ")";
| }
|
| }
|
|
| @Entity
| @Name("address")
| public class Address implements Serializable {
| /**
| *
| */
| private static final long serialVersionUID = 1L;
|
| private long id;
|
|
| /**
| * The public no-argument constructor for AddressBean.
| */
| public Address() {
| //
| }
|
| @Id @GeneratedValue
| public long getId() {
| return id;
| }
|
| public void setId(long id) {
| this.id = id;
| }
|
|
| }
|
| @Stateful
| @Name("businessManaging")
| @LoggedIn
| public class BusinessManagingAction implements BusinessManaging {
|
| @PersistenceContext(type=EXTENDED)
| private EntityManager em;
|
| @In(required=false) @Out
| private Business business;
|
| @In(required=false) @Out(required=false)
| private Contact contact;
|
| @In(required=false) @Out(required=false)
| private Address address;
|
| @In(required=false) @Out(required=false)
| private Opportunity opportunity;
|
| @In
| private FacesMessages facesMessages;
|
| @Logger
| private Log log;
|
| @Begin(join=true)
| public String selectBusiness(Business selectedBusiness) {
| log.info("Selected Business: #{selectedBusiness.id}");
| business = em.merge(selectedBusiness);
| return "business";
| }
|
| public String updateBusiness(Business modifiedBusiness) {
| business = em.merge(modifiedBusiness);
| return "business";
| }
|
| public String selectContact(Contact contact) {
| log.info("Selected Contact: #{contact.id}");
| this.contact = contact;
| return "editcontact";
| }
|
| public String updateContact() {
| log.info("Updating: #{contact.id}");
| em.merge(contact);
| return "business";
| }
|
| public String selectAddress(Address address) {
| log.info("Selected Address: #{address.id}");
| this.address = address;
| return "editaddress";
| }
|
| public String updateAddress() {
| log.info("Updating: #{address.id}");
| em.merge(address);
| return "business";
| }
|
| public String selectOpportunity(Opportunity opportunity) {
| log.info("Selected Opportunity: #{opportunity.id}");
| this.opportunity = opportunity;
| return "editopportunity";
| }
|
| public String updateOpportunity() {
| log.info("Updating: #{opportunity.id}");
| em.merge(opportunity);
| return "business";
| }
|
| public String addContact() {
| business.addContact(contact);
| return "business";
| }
|
| public String removeContact(Contact contact) {
| business.removeContact(contact);
| return "business";
| }
|
| public String addAddress() {
| business.addAddress(address);
| return "business";
| }
|
| public String removeAddress(Address address) {
| business.removeAddress(address);
| return "business";
| }
|
| public String addOpportunity() {
| business.addOpportunity(opportunity);
| return "business";
| }
|
| public String removeOpportunity(Opportunity opportunity) {
| business.removeOpportunity(opportunity);
| return "business";
| }
|
| @End
| public String cancel() {
| return "businesses";
| }
|
| @Destroy @Remove
| public void destroy() {
|
| }
|
| }
|
| @Stateful
| @Scope(CONVERSATION)
| @Name("createAddress")
| public class CreateAddressAction implements CreateAddress {
|
| @In(required=false) @Out
| private Business business;
|
| @In(required=false)
| private Address a = new Address();
|
| @PersistenceContext(type=EXTENDED)
| private EntityManager em;
|
| @In
| private FacesMessages facesMessages;
|
| @Logger
| private Log log;
|
| @Begin(nested=true)
| public String selectBusiness(Business selectedBusiness) {
| log.info("a == null : " + (a==null));
| business = em.merge(selectedBusiness);
| a = new Address();
| return "createaddress";
| }
|
|
| @End
| public String createAddress() {
| log.info("A looks like #{a}");
| business.addAddress(a);
| return "business";
| }
|
| @Destroy @Remove
| public void destroy() {}
| }
|
|
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