Re: Mapping a simple class problem.

[Jose Felix Hernandez]

Thanks Armin,
You were right, I have amended the typos I am not getting any Exception and 
I am making the objects persistent without problems.

At the moment everything is going OK, but I am sure I will find more 
problems.

Regards...
----- Original Message ----- 
From: "Armin Waibel" <[EMAIL PROTECTED]>
To: "OJB Users List" <[EMAIL PROTECTED]>
Sent: Monday, October 04, 2004 11:07 PM
Subject: Re: Mapping a simple class problem.


Hi Jose,
the exception says that UserBO does not declare at least one PK field.
> Caused by:
> org.apache.ojb.broker.metadata.ClassNotPersistenceCapableException: OJB
> needs at least one primary key attrib
> ute for class  objectsRealClass=class
> com.jose.forum.businessobjects.UserBO,
In UserBO you set
> <field-descriptor
>  name="id"
>  column="id"
>  jdbc_type="INTEGER"
>  primaryKey="true"
>  autoincrement="true"
> />
But primaryKey="true" is a typo and should be primarykey="true".
By the way 'jdbc_type' should be 'jdbc-type' - another typo.
Good luck!
regards,
Armin
Jose Felix Hernandez wrote:
Hi,
I�m just getting started and this is my problem trying to map a single
class. Find below the table structure, the BusinessObject java class, the
repository.xml, the class I�m using to run the test and the exception I�m
getting.
I hope somebody can help my to spot what is wrong...
Thanks...
The table structure is ...
CREATE TABLE `user` (
 `id` int(11) NOT NULL default '0',
 `firstName` varchar(50) default NULL,
 `lastName` varchar(50) default NULL,
 `email` varchar(50) default NULL,
 `password` varchar(50) default NULL,
 `status` char(1) default NULL,
 PRIMARY KEY  (`id`)
) TYPE=InnoDB ROW_FORMAT=DYNAMIC;
The BO is...
package com.jose.forum.businessobjects;
public class UserBO implements java.io.Serializable {
private int id;
private String firstName;
private String lastName;
private String email;
private String password;
private String accountStatus;
//public UserBO(){
// super();
//}
public int getId() {
 return id;
}
public void setId(int id) {
 this.id = id;
}
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 String getEmail() {
 return email;
}
public void setEmail(String email) {
 this.email = email;
}
public String getPassword() {
 return password;
}
public void setPassword(String password) {
 this.password = password;
}
public String getAccountStatus() {
 return accountStatus;
}
public void setAccountStatus(String accountStaturs) {
 this.accountStatus = accountStatus;
}
}
The repository-user.xml is...
<class-descriptor
class="com.jose.forum.businessobjects.UserBO"
table="user"

<field-descriptor
 name="id"
 column="id"
 jdbc_type="INTEGER"
 primaryKey="true"
 autoincrement="true"
/>
<field-descriptor
 name="firstName"
 column="firstName"
 jdbc-type="VARCHAR"
/>
<field-descriptor
 name="lastName"
 column="lastName"
 jdbc-type="VARCHAR"
/>
<field-descriptor
 name="email"
 column="email"
 jdbc-type="VARCHAR"
/>
<field-descriptor
 name="password"
 column="password"
 jdbc-type="VARCHAR"
/>
<field-descriptor
 name="accountStatus"
 column="status"
 jdbc-type="CHAR"
/>
</class-descriptor>
The class I�m using to test is...
public class Test {
static Implementation odmg = null;
static Database db = null;
public static void main(String args[])  throws ODMGException{
 UserBO user = new UserBO();
 user.setId(0);
 user.setFirstName("Jose");
 user.setLastName("Hernandez");
 user.setEmail("[EMAIL PROTECTED]");
 user.setPassword("jose");
 user.setAccountStatus("A");
 init();
 Transaction tx = odmg.newTransaction();
 tx.begin();
  db.makePersistent(user);
 tx.commit();
 destroy();
}
private static void destroy() throws ODMGException{
 db.close();
}
private static void init() throws ODMGException{
 ConnectionRepository cr =
MetadataManager.getInstance().connectionRepository();
 JdbcConnectionDescriptor jcd = new JdbcConnectionDescriptor();
 jcd.setJcdAlias("jfhForum");
 jcd.setUserName("web");
 jcd.setPassWord("web");
 jcd.setDbAlias("jfhForum");
 jcd.setDbms("MySQL");
 cr.addDescriptor(jcd);
 PBKey key = new PBKey("jfhForum", "web", "web");
 PersistenceBroker broker = PersistenceBrokerFactory.
 createPersistenceBroker(key);
 odmg = OJB.getInstance();
 db = odmg.newDatabase();
 db.open("jfhForum", Database.OPEN_READ_WRITE);
}
}


I get the below exception...
[org.apache.ojb.odmg.DatabaseImpl] ERROR: Persistence object failed:
[EMAIL PROTECTED]
Can not init Identity for given object
[EMAIL PROTECTED]
org.apache.ojb.broker.metadata.ClassNotPersistenceCapableException: Can 
not
init Identity for given object com.jose.foru
[EMAIL PROTECTED]
       at org.apache.ojb.broker.Identity.init(Identity.java:157)
       at org.apache.ojb.broker.Identity.<init>(Identity.java:114)
       at
org.apache.ojb.odmg.locking.InMemoryLockMapImpl.getWriter(InMemoryLockMapImpl.java:64) 
at
org.apache.ojb.odmg.locking.AbstractLockStrategy.getWriter(AbstractLockStrategy.java:59) 
at
org.apache.ojb.odmg.locking.ReadUncommittedStrategy.writeLock(ReadUncommittedStrategy.java:60) 
at
org.apache.ojb.odmg.locking.LockManagerDefaultImpl.writeLock(LockManagerDefaultImpl.java:76) 
at
org.apache.ojb.odmg.TransactionImpl.lock(TransactionImpl.java:249)
       at
org.apache.ojb.odmg.DatabaseImpl.makePersistent(DatabaseImpl.java:374)
       at Test.main(Test.java:23)
Caused by:
org.apache.ojb.broker.metadata.ClassNotPersistenceCapableException: OJB
needs at least one primary key attrib
ute for class  objectsRealClass=class 
com.jose.forum.businessobjects.UserBO,
objectTopLevelClass=class com.jose.forum.bu
sinessobjects.UserBO
       at
org.apache.ojb.broker.Identity.checkForPrimaryKeys(Identity.java:277)
       at org.apache.ojb.broker.Identity.init(Identity.java:153)
       ... 8 more
Exception in thread "main" org.odmg.ClassNotPersistenceCapableException: 
Can
not init Identity for given object com.jose
[EMAIL PROTECTED]
       at
org.apache.ojb.odmg.DatabaseImpl.makePersistent(DatabaseImpl.java:385)
       at Test.main(Test.java:23)

Thank you very much for your help.
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