Re: [Hibernate] [Maybe OT] odmg.jar licence

2003-10-28 Thread Christian Bauer
On 27 Oct (15:48), [EMAIL PROTECTED] wrote:

> does anybody know the exact licensing terms of the odmg.jar file? I was
> unable to find anything mentioning something about it.

http://forum.hibernate.org/viewtopic.php?t=924813

-- 
Christian Bauer
[EMAIL PROTECTED]


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[Hibernate] one to one relationship Hiberbate 2.0.3 MySQL 4.0.14b not working

2003-10-28 Thread A Nonymous



Hi Guys,
 
Environment: Hibernate 2.0.3, MySQL 
4.0.14b, Windows 2K.
 
have many-to-many, 
many-to-one, and one-to-many working like a charm.
 
struggling with enforcing the same 
key for a one-to-one.
 
example user.hbm.xml:
 
  
    
            
  

 
example address.hbm.xml:
 
  
    

  
  

    

 
when I create an address object for a 
specific user, it has a different id than the user's id: 2
 
trying to enforce with something like 
addr.setId(user.getId()); does not work, still the address has an id of 65537 
for example, so the delete of a user has no impact on the address.
 
Is something wrong in the hbm.xml? does somebody have a working example 
of the one-to-one relationship?
 
Thanks, Mike
 
 


[Hibernate] Business Rules

2003-10-28 Thread Miguel Henley

Hi all,

Please, take a look at the the following scenario:
A "Order" persistence class is associate to a "Customer" persistence class and the 
business rules is:
We can not make a new Order if the Customer associated with that Order has some credit 
restrictions.

Where is the right place to put this rule is Hibernate ?
At a Interceptor class ?  At the Order class (using the validate() method of the 
Validatable interface) ?

Regards,
Miguel.


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RE: [Hibernate] Business Rules

2003-10-28 Thread Eric Pugh
I lean towards not putting that kind of logic in some sort of Manager
object..  I find that when you start mixing busienss logic with data
objects, soon your business logic tier and data tier become all intertwined.


I would lean towards OrderManager or something where you have a call like:
OrderManager.createOrder(Customer) throws OrderCreationException or
OrderManager.canCreateOrder(Customer) 

Then put that business logic about credit restrictions into the
OrderManager..  Because over time your Customer and Order objects will
remain the same, but your business rules on credit restrictions may change!

Eric

> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf 
> Of Miguel
> Henley
> Sent: Tuesday, October 28, 2003 1:07 PM
> To: [EMAIL PROTECTED]
> Subject: [Hibernate] Business Rules
> 
> 
> 
> Hi all,
> 
> Please, take a look at the the following scenario:
> A "Order" persistence class is associate to a "Customer" 
> persistence class and the business rules is:
> We can not make a new Order if the Customer associated with 
> that Order has some credit restrictions.
> 
> Where is the right place to put this rule is Hibernate ?
> At a Interceptor class ?  At the Order class (using the 
> validate() method of the Validatable interface) ?
> 
> Regards,
> Miguel.
> 
> 
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[Hibernate] SchemaExportTask + JBoss

2003-10-28 Thread Giovanni Formenti
Hallo,
there is a way to use jboss-service.xml with Ant's "SchemaExportTask"?
Now i create a hibernate.cgf.xml file ONLY to use it with this task but to
run JBoss+Hibernate it's not necessary! I'd like to don't mantain
hibernate.cfg.xml...

Any idea?
Gio



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Re: [Hibernate] Business Rules

2003-10-28 Thread Christian Bauer
On 28 Oct (12:38), Eric Pugh wrote:

> I lean towards not putting that kind of logic in some sort of Manager
> object..  I find that when you start mixing busienss logic with data
> objects, soon your business logic tier and data tier become all intertwined.

Interestingly, thats the reason for a domain model in the first place. :)


-- 
Christian Bauer
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RES: [Hibernate] Business Rules

2003-10-28 Thread Miguel Henley

So, do you think that for each persitence class it's a good design decision to create 
a Manager class ?  The Manager class first check the business rules and if it's Ok 
calls the save / update / delete methods of the session. Is it right ?

Miguel.

-Mensagem original-
De: Christian Bauer [mailto:[EMAIL PROTECTED]
Enviada em: Terça-feira, 28 de Outubro de 2003 09:10
Para: [EMAIL PROTECTED]
Assunto: Re: [Hibernate] Business Rules


On 28 Oct (12:38), Eric Pugh wrote:

> I lean towards not putting that kind of logic in some sort of Manager
> object..  I find that when you start mixing busienss logic with data
> objects, soon your business logic tier and data tier become all intertwined.

Interestingly, thats the reason for a domain model in the first place. :)


-- 
Christian Bauer
[EMAIL PROTECTED]


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Re: RES: [Hibernate] Business Rules

2003-10-28 Thread Christian Bauer
On 28 Oct (10:33), Miguel Henley wrote:

> So, do you think that for each persitence class it's a good design decision to 
> create a Manager class ?  The Manager class first check the business rules and if 
> it's Ok calls the save / update / delete methods of the session. Is it right ?

No, this is not a good design decision. Your domain model classes should
implement the business rules and functions. Some of them might be
persistent, but thats what you have Hibernate for. Sometimes you might
use a "Manager" type class in your domain model, but most of the time
the objects _themselves_ interact by calling business methods on each
other and/or passing themselves as arguments.

Read up on "Strategy Pattern" and other techniques how to implement
this. A good source is Martin Fowler's Patterns of Enterprise
Architecture, but it's not "only" about domain model/transaction
scripts/business logic design issues.

-- 
Christian Bauer
[EMAIL PROTECTED]


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RE: [Hibernate] Business Rules

2003-10-28 Thread Urberg, John
I see the following two options:

1) Make the constructor on Order private and use a static factory method on
Order to first verify the Customer does not have credit restrictions before
creating the Order.

2) Make the constructor on Order package level access and add a method to
Customer to create an Order.  Put the credit restriction check there.  This
assumes it makes sense to have Customer and Order in the same package.

I would avoid putting the logic in a validate() method.  If the rule is that
an order cannot be created for a customer with credit restrictions, you
should never create an Order object that breaks that rule.

Regards,
John Urberg

There are two types of programming languages; the ones that people bitch
about and the ones that no one uses. - Bjarne Stroustrup


-Original Message-
From: Miguel Henley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 28, 2003 6:07 AM
To: [EMAIL PROTECTED]
Subject: [Hibernate] Business Rules



Hi all,

Please, take a look at the the following scenario:
A "Order" persistence class is associate to a "Customer" persistence class
and the business rules is:
We can not make a new Order if the Customer associated with that Order has
some credit restrictions.

Where is the right place to put this rule is Hibernate ?
At a Interceptor class ?  At the Order class (using the validate() method of
the Validatable interface) ?

Regards,
Miguel.


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[Hibernate] one-to-one cascading delete

2003-10-28 Thread Trumpickas, Giedrius

Hi,

Is there is any way how to get entity state before modifications where made to the 
entity in transaction ?.

For example pseudo code:

tx.begin()

Entity a = session.load( .. ) now we have entity state E1 from the database assuming 
that entity is not in cache

// modify entity state
a.modifyState() -  state is E2

t.commit()

Is there is any way how to get state E1  in the Cascades processing code ? I have 
looked at SessiomImplementator and I can not figure out how.

Main reason for that is that I'm looking how to implement transparent delete on 
one-to-one associations.

Imagine situation:

There is Person class which have one-to-one association with PersonInfo

right now If I want to delete this association I need to call session.delete(info) It 
would be nice to have code like this:

person.setInfo(null);
tx.commit();

In order to implement this Cascades processing code need to know that that association 
was deleted in this transaction.

Thanks,

Giedrius






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Re: [Hibernate] Re: Re: CGLIB2

2003-10-28 Thread David Morris
Gavin,

Is there any possibility of getting the JDBC 3.0 getGeneratedKeys patch
applied and into 2.1? I picked up the last round of changes and can
build another updated patch for you later this evening if it would
help.

Thanks,

David Morris

>>Ah. hm. I am actually ready to release 2.1rc1. Just waiting on
>>Bela's stuff.



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[Hibernate] what's the best way?

2003-10-28 Thread dosapati



Hi,
 
I have Entitities A, B, & 
C.
 
B should hold an instance of 
A.
 
C should hold an instance of 
A.
 
If I use one-to-one mapping to A 
in B & C, will it work?
or is there any alternative to achieve the 
above relations.
 
Thanks in advance!
 
dosapati


[Hibernate] ID Generator

2003-10-28 Thread Pragasam, Mukund (Consultant)
ID Generator

If you wish to assign this issue/new feature to us, we can develop and
contribute to the Hibernate open source. 

Requirement:

1) Multiple UidGenerator streams (say a stream per table in DB)
2) High performance Requirement - Transaction spanning across public and
private network, end to end response time is 3 sec - Hence ID generation is
few m.sec
3) Unique identifier of type String / long / int
*   Say for example a particular DB table may need a String as the ID 
so the generator need to provide
Long.toString(long value);
*   Other tables may need a long or int.
4) Supporting multiple databases
5) Handle Transaction. 
*   (eg) 
*   Not participate in Transaction (when this is running in a session
bean)
*   Start new Transaction (when this is running in a session bean)
etc...
6) Use of high-low algorithm
7) Unique even in a multi-VM environment

hilo or seqhilo in Hibernate provides only a few out of the above 7
requirements. We need to have a new type that provides all the above.

Design:

Our generator will take a name as input (generatorName)
The generatorName parameter has to be a unique string, which allows
sequential blocks of unique ids to be kept within each class/DB table. This
provides the ability to have multiple UidGenerator streams.

Internally, key (long, 8bytes) generation is achieved using a so-called
high-low algorithm, obtaining the high values (also known as "blocks") from
a single persistent source (the UidBlockPool). Within a given block, IDs are
generated in memory. The persistent store is accessed only during startup
and when a block is exhausted. Depending on application requirement the
latter occurrence can  be very rare, if the block size is large enough. 

Table Design :

TABLE ES_UIDBLOCKPOOL
  NAME VARCHAR(50) NOT NULL
  BLOCK_SIZE LONGINT
  CURRENT_BLOCK LONGINT

Name is the generator name. (usually the name of the class that uses it)
The block size helps us to define custom block size. If sequential numbers
are needed, we could set the size to 1
Thus this makes it configurable. For each table we can set the custom block
size.
Current Block will have the current value for the Block for that particular
generator name.

The IDs are guaranteed to be unique even in a multi-VM environment, as long
as the persistent store is shared. IDs are not guaranteed to be sequential.
The generator provides unique ID that are either String or long or int based
on the request.
This could be configured in the same way as the existing ID generator in
Hibernate.

Advantages:

*   Custom block size could be set. So could be used as sequence
generator also.
*   It has all the features that we have in Increment, Sequence, Hilo in
Hibernate.
*   Multiple ID Streams 
*   High performance 


Regards,
P. Mukund.

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[Hibernate] MySQL/No PK Issue - Cannot Insert

2003-10-28 Thread Algirdas P. Veitas



Hi Folks,
 
We have a table 'dummy' with no primary key 
(playing w/ the dealt cards) which upon trying to perform an insert, we get an unexpected error from mysql
 
    java.sql.SQLException: Column 
not found,  message from server: "Unknown column 'hostName' in 'field 
list'"
 
For other tables with primary keys, we do not see 
the issue.
 
Judging from the log files, it seems as if 
'hostName' is appended to the insert statement, which seems quite 
odd..
 
14:35:41,640 DEBUG SessionFactoryImpl:526 - 
prepared statement get: insert into dummy (host_name, update_date, hostName) 
values (?, ?, ?)
 
...because the schema looks like 
this.
 
create table dummy ( host_name int(11) NOT NULL , 
update_date datetime NOT NULL ) ;
We are using MySQL 4.0.15, Hibernate 2.0.3 and the 
mysql-connector.jar 3.0.8 (stable).
 
Anyone run into this?  
 
Stack Trace, configuration files and source code 
are below:
 
14:35:41,640 DEBUG EntityPersister:464 - Inserting 
entity: [EMAIL PROTECTED]14:35:41,640 DEBUG BatcherImpl:166 - 
about to open: 0 open PreparedStatements, 0 open ResultSets14:35:41,640 
DEBUG SessionFactoryImpl:526 - prepared statement get: insert into dummy 
(host_name, update_date, hostName) values (?, ?, ?)Hibernate: insert into 
dummy (host_name, update_date, hostName) values (?, ?, ?)14:35:41,640 DEBUG 
SessionFactoryImpl:536 - preparing statement14:35:41,734 DEBUG 
EntityPersister:366 - Dehydrating entity: 
[EMAIL PROTECTED]14:35:41,781 DEBUG JDBCExceptionReporter:36 - 
SQL Exceptionjava.sql.SQLException: Column not found,  message from 
server: "Unknown column 'hostName' in 'field list'" at 
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1651) at 
com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:889) at 
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:956) at 
com.mysql.jdbc.Connection.execSQL(Connection.java:1874) at 
com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1700) at 
com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1569) at 
net.sf.hibernate.impl.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:22) at 
net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:478) at 
net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:454) at 
net.sf.hibernate.impl.ScheduledInsertion.execute(ScheduledInsertion.java:20) at 
net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2100) at 
net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2061) at 
net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2005) at 
net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:57) at 
QuickTest.endTransaction(QuickTest.java:69) at 
QuickTest.main(QuickTest.java:30)
 
--
hibernate.cfg.xml:
 
 
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
    

    
java:comp/env/jdbc/dummy    
true    
true    
net.sf.hibernate.dialect.MySQLDialect
      
   
    


---
Dummy.hbm.xml:
 
http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">    
  

Dummy.java:
 
package com;
 
import java.io.Serializable;import 
java.util.Date;import 
org.apache.commons.lang.builder.ToStringBuilder;
 
/** @author Hibernate CodeGenerator */public 
class Dummy implements Serializable {
 
    /** persistent field 
*/    private Integer hostName;
 
    /** persistent field 
*/    private Date updateDate;
 
    /** full constructor 
*/    public Dummy(Integer hostName, Date updateDate) 
{    this.hostName = 
hostName;    this.updateDate = 
updateDate;    }
 
    /** default constructor 
*/    public Dummy() {    }
 
    public Integer getHostName() 
{    return 
this.hostName;    }
 
    public void setHostName(Integer 
hostName) {    this.hostName = 
hostName;    }
 
    public Date getUpdateDate() 
{    return 
this.updateDate;    }
 
    public void setUpdateDate(Date 
updateDate) {    this.updateDate = 
updateDate;    }
 
    public String toString() 
{    return new 
ToStringBuilder(this)    
.toString();    }
 
}
---
QuickTest.java:
 
import net.sf.hibernate.*;import 
net.sf.hibernate.cfg.*;import java.util.Date;import 
com.Dummy;
 
import test.jndi.JNDIUnitTestHelper;
 
public class QuickTest {
 
    private SessionFactory 
sessionFactory;    private Session 
session;    private Transaction tr

[Hibernate] Swarmcache, HashtableCacheProvider

2003-10-28 Thread Sandeep Dath
Title: Message



Is 
SwarmCache support active in Beta 4? What about HashtableCacheProvider? Is the 
use of either of these documented
Sandeep


Re: [Hibernate] Re: Re: CGLIB2

2003-10-28 Thread Gavin King
Ummm not sure. It is a fairly complex patch, to core functionality.

And I am not yet 100% on accepting it (I'm about 80%).

I think we would need to go though a beta5 for this.

David Morris wrote:

Gavin,

Is there any possibility of getting the JDBC 3.0 getGeneratedKeys patch
applied and into 2.1? I picked up the last round of changes and can
build another updated patch for you later this evening if it would
help.
Thanks,

David Morris

 

Ah. hm. I am actually ready to release 2.1rc1. Just waiting on
Bela's stuff.
 



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Re: [Hibernate] ID Generator

2003-10-28 Thread Gavin King
To implement this requires an id generator with dependencies upon
EJB APIs. ie. it requires a session bean. Hibernate does not
currently have dependencies upon EJB.
This is an appropriate thing to maintain as part of your application.

Pragasam, Mukund (Consultant) wrote:

ID Generator

If you wish to assign this issue/new feature to us, we can develop and
contribute to the Hibernate open source. 

Requirement:

1) Multiple UidGenerator streams (say a stream per table in DB)
2) High performance Requirement - Transaction spanning across public and
private network, end to end response time is 3 sec - Hence ID generation is
few m.sec
3) Unique identifier of type String / long / int
*	Say for example a particular DB table may need a String as the ID 
so the generator need to provide
Long.toString(long value);
*	Other tables may need a long or int.
4) Supporting multiple databases
5) Handle Transaction. 
*	(eg) 
*	Not participate in Transaction (when this is running in a session
bean)
*	Start new Transaction (when this is running in a session bean)
etc...
6) Use of high-low algorithm
7) Unique even in a multi-VM environment

hilo or seqhilo in Hibernate provides only a few out of the above 7
requirements. We need to have a new type that provides all the above.
Design:

Our generator will take a name as input (generatorName)
The generatorName parameter has to be a unique string, which allows
sequential blocks of unique ids to be kept within each class/DB table. This
provides the ability to have multiple UidGenerator streams.
Internally, key (long, 8bytes) generation is achieved using a so-called
high-low algorithm, obtaining the high values (also known as "blocks") from
a single persistent source (the UidBlockPool). Within a given block, IDs are
generated in memory. The persistent store is accessed only during startup
and when a block is exhausted. Depending on application requirement the
latter occurrence can  be very rare, if the block size is large enough. 

	Table Design :

TABLE ES_UIDBLOCKPOOL
  NAME VARCHAR(50) NOT NULL
  BLOCK_SIZE LONGINT
  CURRENT_BLOCK LONGINT
Name is the generator name. (usually the name of the class that uses it)
The block size helps us to define custom block size. If sequential numbers
are needed, we could set the size to 1
Thus this makes it configurable. For each table we can set the custom block
size.
Current Block will have the current value for the Block for that particular
generator name.
The IDs are guaranteed to be unique even in a multi-VM environment, as long
as the persistent store is shared. IDs are not guaranteed to be sequential.
The generator provides unique ID that are either String or long or int based
on the request.
This could be configured in the same way as the existing ID generator in
Hibernate.
Advantages:

*	Custom block size could be set. So could be used as sequence
generator also.
*	It has all the features that we have in Increment, Sequence, Hilo in
Hibernate.
*	Multiple ID Streams 
*	High performance 

Regards,
P. Mukund.
-
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intended recipient(s). Any review, use, retention, distribution or disclosure by 
others is strictly prohibited. If you are not the intended recipient (or authorized to 
receive for the recipient), please contact the sender by reply email and delete all 
copies of this message.  Also, email is susceptible to data corruption, interception, 
tampering, unauthorized amendment and viruses. We only send and receive emails on the 
basis that we are not liable for any such corruption, interception, tampering, 
amendment or viruses or any consequence thereof.


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Re: [Hibernate] Re: Re: CGLIB2

2003-10-28 Thread Gavin King
Wouldn't that mean that we would get both versions of CGLIB in our lib 
directory?

Perhaps its better to just wait until Proxool has also upgraded. Perhaps 
we can
put some pressure on them to get up to date.

Chris Nokleberg wrote:

On Tue, Oct 28, 2003 at 08:03:06PM +1100, Gavin King wrote:
 

Whoah but we have a dependency to proxool. Does that mean that 
integrating cglib 2 will
break our proxool support?

   

We will change the base package name before the next beta to prevent
binary incompatibility issues. I can send you another patch then. It's a
pain but I think the alternative is worse (for example a new version of
proxool was just released and it uses CGLIB 1.0).
 

I see the latest version of proxool isn't in "lib" but if you put it
there it would be incompatible with the patch...that's why I mention
it. If it is a problem we can change the package name now (after which
cglib1 and cglib2 can co-exist), make a new patch, and release
cglib2-beta2 for hib21-rc1.
Chris

 



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