Hi,
I'm just wondering how JBoss handles foreign key constraints. I have an entity
with a OneToOne-Mapping and CascaseType.ALL set, but in the database schema no
cascade delete is set.
Here's a code fragement:
| @Entity
| @Table(name = "Users")
| public class User implements Serializable {
| private int id;
|
| private ChatInfo chatInfo;
|
| @OneToOne(cascade = {CascadeType.ALL}, fetch = FetchType.EAGER,
optional = false)
| public ChatInfo getChatInfo() {
| return chatInfo;
| }
|
| public void setChatInfo(ChatInfo chatInfo) {
| this.chatInfo = chatInfo;
| }
| }
|
| @Entity
| @Table(name = "ChatInfo")
| public class ChatInfo implements Serializable {
| private int id;
|
| @Id
| @GeneratedValue(strategy = GenerationType.IDENTITY)
| @JoinColumn(name = "id", referencedColumnName = "chatinfo_id", table =
"users", updatable = false, nullable = false)
| public int getId() {
| return id;
| }
|
| protected void setId(int id) {
| this.id = id;
| }
|
| }
|
When I look on the database schema there I see "ON DELETE NO ACTION" at the
foreign key constraint, but I had expected "ON DELETE CASCADE". Can anybode
explain this?
| CREATE TABLE users
| (
| id int4 NOT NULL DEFAULT nextval('users_id_seq'::regclass),
| chatinfo_id int4 NOT NULL,
| CONSTRAINT users_pkey PRIMARY KEY (id),
| CONSTRAINT fk4e39de8d7cb3bff FOREIGN KEY (chatinfo_id)
| REFERENCES chatinfo (id) MATCH SIMPLE
| ON UPDATE NO ACTION ON DELETE NO ACTION,
| )
|
I use JBoss 4.0.5 and a Postgres 8.1 database.
Best regards,
Strunker
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