AL> Wow... I can't understand it. After modifying hashCode() in both
AL> ResourceOwnerPK and UserPK classes to just calling super.hashCode(), I
AL> can create an instance but the log is as follows:
AL> INFO [com.imedia.tracker.components.resourceowner.bean.ResourceOwnerEJB] Created:
{username=owner1 password=password1}
AL> DEBUG[org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Create: pk=[.null.] <-- NULL BUT CREATED WITHOUT EXCEPTION AND DB CONTAINS 'owner1'
AL> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Executing SQL: SELECT COUNT(*) FROM ResourceOwner WHERE username=?
AL> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Executing SQL: INSERT INTO ResourceOwner (username, password) VALUES (?, ?)
AL> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Create: Rows affected = 1
AL> INFO [com.imedia.tracker.components.resourceowner.bean.ResourceOwnerEJB] Created
(postCreate): pk is [.null.]
But I can't remove the created this way instance even with commit
option C, though the database contains valid values. Here is the log:
2002-05-13 12:45:52,032 INFO
[com.imedia.tracker.components.usermanager.bean.UserManagerEJB] Exc while removing
resource owner [.owner1.]
javax.ejb.ObjectNotFoundException: No such entity!
AL>> I wrote a simple entity bean ResourceOwnerEJB with ResourceOwnerPK primary key
class. The bean contains two fields: username and password. The primary key class
contains the only field:
AL>> username. When deployed, I can create instances of the bean successufully.
AL>> Here is the log:
AL>> INFO [com.imedia.tracker.components.resourceowner.bean.ResourceOwnerEJB]
Created: {username=owner1 password=password1}
AL>> DEBUG[org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Create: pk=[.owner1.] <-- CORRECT VALUE
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Executing SQL: SELECT COUNT(*) FROM ResourceOwner WHERE username=?
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Executing SQL: INSERT INTO ResourceOwner (username, password) VALUES (?, ?)
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Create: Rows affected = 1
AL>> Then I wrote UserPK primary key class that is the same as ResourceOwnerPK
(contains only the field username). The only thing I changed in ResourceOwnerPK is
replacement of 'extends Object' with
AL>> 'extends UserPK'. When deployed I can't create an instance of the bean.
AL>> Here is the log:
AL>> INFO [com.imedia.tracker.components.resourceowner.bean.ResourceOwnerEJB]
Created: {username=owner1 password=password1}
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Create: pk=[.null.] <-- NULL !!!
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Executing SQL: SELECT COUNT(*) FROM ResourceOwner WHERE username=?
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Executing SQL: INSERT INTO ResourceOwner (username, password) VALUES (?, ?)
AL>> DEBUG [org.jboss.ejb.plugins.cmp.jdbc.JDBCCreateEntityCommand.ResourceOwner]
Create: Rows affected = 1
AL>> ERROR [org.jboss.ejb.plugins.LogInterceptor] TransactionRolledbackException,
causedBy:
AL>> java.lang.NullPointerException
AL>> at
com.imedia.tracker.components.resourceowner.interfaces.ResourceOwnerPK.hashCode(ResourceOwnerPK.java:59)
AL>> Here is hashCode function (the same in UserPK and ResourceOwnerPK):
AL>> public int hashCode() {
AL>> if( _hashCode == Integer.MIN_VALUE )
AL>> _hashCode += this.username.hashCode(); // line 59
AL>> return _hashCode;
AL>> }
AL>> Do someone have some thoughts on why it is happening? Any advices are
AL>> very much appreciated.
AL>> TIA!
AL>> Environment: JBoss-3.1.0alpha, J2SDK1.4.0, Win2000
--
Best regards,
Alex Loubyansky mailto:[EMAIL PROTECTED]
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