Thread: [Hibernate-devel] (no subject)

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Hi,

  On an earlier post, Gavin proposed to follow my proposal and make an API
modification 
 - there were no objections for that. 
I would like to understand what is the next step. If there is an issue with
implementing 
the change, I hereby volunteer to implement it. Assuming I will make the
modification soon, is there a chance to get it into 1.1?

Thanks, Yaron.

----------------------------------------------------------------------------
-----------------------------
Quote from Gavin

http://sourceforge.net/forum/forum.php?thread_id=722838&forum_id=128638

Yaron Zakai makes a suggestion I quite like.

I've seen that new users often have trouble realizing they need to use
insert() instead of save() when they want to use application-assigned ids.
People seem to expect that the "assigned" id generator will just use the
existing id of an object when you call save().

Secondly, some people would like insert() to cascade to insert(). Whereas
other times insert() to save() is appropriate.

So I would like to deprecate the following methods:

  Session.insert(Object)
  Session.insert(Object, Serializable)

and add the following method

  Session.save(Object, Serializable)

(which does exactly what Session.insert(Object, Serializable) used to do.)

Then we would deprecate the IDGenerator interface and replace it with:

public interface IdentifierGenerator {
  public Serializable generate(SessionImplementor session, Object entity)
    throws ..... ;
}

Yaron Zakai wrote:

>Hi,
>
>  On an earlier post, Gavin proposed to follow my proposal and make an API
>modification 
> - there were no objections for that. 
>I would like to understand what is the next step. If there is an issue with
>implementing 
>the change, I hereby volunteer to implement it. Assuming I will make the
>modification soon, is there a chance to get it into 1.1?
>

Gavin already got to it!  Check out the latest beta (although I think he 
did it in b10).

-Mark

Hello all,

If you are using Hibernate with ID's as the primary keys (i.e. not using business data as keys / composite keys) should the database have referential integrity, and if so, how much?

So:

1) If I have a parent child relationship, and in the DB the child has the parents key, should the RI of that relationship be enforced in the DB?

2) What about "business" referential integrity?  If I were doing things the "old way" and using the business data as keys, the DB would perform lots of RI checking to make sure only "valid" rows could be inserted (rows where the primary key / foriegn key relationships were correct).  Should these RI "rules" still be enforced in the database, or not?

Later
Rob

On 16 Jun (13:47), Rob Butler wrote:

> 1) If I have a parent child relationship, and in the DB the child has the parents key, should the RI of that relationship be enforced in the DB?

Of course, if you use the SchemaExport tool, Hibernate will even create
the foreign key constraints for you.

> 2) What about "business" referential integrity?  If I were doing things the "old way" and using the business data as keys, the DB would perform lots of RI checking to make sure only "valid" rows could be inserted (rows where the primary key / foriegn key relationships were correct).  Should these RI "rules" still be enforced in the database, or not?

Don't do that.

-- 
Christian Bauer
c....@un...

Hello folks,

We are looking for someone to assist us in evaluating the suitability of
Hibernate as the persistence layer for our systems. The contractor can
work from home.  Its probably a week of work and pays $2000 USD. If you
or anyone you know with hibernate experience is interested please send
me a resume.

Thank you,
Dan

Hi everyone,
	I have an object named EntiteAffaire that has a collection
(many-to-many relation with a composite-element) of coordinate. A coordin=
ate
can be a telephone, an address or an email. In the coordinate table, ther=
e
is a field named "KIND_COO" that tells me which kind of coordinate is in =
the
current row. Is it possible to specify a where clause for the set named
entiteCoordonnees to get only one kind of coordinate in the set? This way=
, I
would be able to defined three sets, one for each kind of coordinate. I
succeed to specify a where clause that map to a field of the collection
table (utl.t_entite_coordonnee_l), but not to the coordinate table, which=
 is
the end point of the relation.

	<class name=3D"com.iris.business.component.util.EntiteAffaire"
schema=3D"UTL" table=3D"T_ENTITE_AFFAIRE">
		<id name=3D"id" type=3D"string" column=3D"ID_EA"
unsaved-value=3D"null">
			<generator
class=3D"com.iris.infrastructure.services.identification.UniqueIDProvider=
Hiber
nateImpl"/>
		</id>

		<set name=3D"entiteCoordonnees" schema=3D"UTL"
table=3D"T_ENTITE_COORDONNEE_L" lazy=3D"true" cascade=3D"all" >
			<key column=3D"ID_EA"/>
		=09
			<composite-element
class=3D"com.iris.business.component.util.EntiteCoordonnee">
				<property name=3D"utilisation"
column=3D"REF_UTIL_COORD_EC" type=3D"string" not-null=3D"true"/>
				<many-to-one name=3D"coordonnee"=20
							 column=3D"ID_COO"=20
=09
class=3D"com.iris.business.component.util.CoordonneeUtil"=20
							 not-null=3D"true" =20
							 cascade=3D"all"/>
			</composite-element>
		</set>
	</class>

SQL> desc utl.t_entite_affaire;
 Name                                      Null?    Type
 ----------------------------------------- --------
----------------------------
 ID_EA                                     NOT NULL NUMBER(28)
 DATE_DERNIERE_MAJ                         NOT NULL TIMESTAMP(6)

SQL> desc utl.t_entite_coordonnee_l;
 Name                                      Null?    Type
 ----------------------------------------- --------
----------------------------
 ID_COO                                    NOT NULL NUMBER(28)
 ID_EA                                     NOT NULL NUMBER(28)
 REF_UTIL_COORD_EC                         NOT NULL VARCHAR2(19)
 DATE_DERNIERE_MAJ                         NOT NULL TIMESTAMP(6)

SQL> desc utl.t_coordonnee;
 Name                                      Null?    Type
 ----------------------------------------- --------
----------------------------
 ID_COO                                    NOT NULL NUMBER(28)
 KIND_COO                             NOT NULL VARCHAR2(19)
 DATE_DERNIERE_MAJ                         NOT NULL TIMESTAMP(6)

I hope that my question is clear enough...

Philip St-Pierre
> Loto-Qu=E9bec - Projet IRIS (Centre de livraison)
Analyste-Programmeur
> * phi...@lo...
>=20
>=20

---------------------------------
Do you Yahoo!?
Win a $20,000 Career Makeover at Yahoo! HotJobs 
Buildfile: build.xml

init:

compile:
    [javac] Compiling 1 source file to E:\JAVA-SOFTWARE\J2EE-Projects\JDO -
TRAILS\HIBERNATE - TRAIL
S\TEST-4\obj

Pls. see the Highlighted Red Colour statement.
Pls. help me in w.r.to this Bug

Rgds
Sai

run:
     [java]  Entered into Load Customers.. class...........
     [java] log4j:WARN No appenders could be found for logger
(net.sf.hibernate.cfg.Environment).
     [java] log4j:WARN Please initialize the log4j system properly.
     [java] net.sf.hibernate.JDBCException: SQLException occurred
     [java]     at
net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:3574)
     [java]     at
net.sf.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:223)
     [java]     at mitoken.LoadCustomers.main(Unknown Source)

     [java] Caused by: java.sql.SQLException: Invalid column name
'COB_PMR_Personnel_Last_Name'.

     [java]     at
net.sourceforge.jtds.jdbc.SqlMessage.toSQLException(SqlMessage.java:85)
     [java]     at
net.sourceforge.jtds.jdbc.SQLWarningChain.addOrReturn(SQLWarningChain.java:9
9)
     [java]     at
net.sourceforge.jtds.jdbc.Tds.submitProcedure(Tds.java:616)
     [java]     at
net.sourceforge.jtds.jdbc.PreparedStatement_base.submitProcedure(PreparedSta
temen
t_base.java:195)
     [java]     at
net.sourceforge.jtds.jdbc.PreparedStatement_base.execute(PreparedStatement_b
ase.j
ava:174)
     [java]     at
net.sourceforge.jtds.jdbc.PreparedStatement_base.executeQuery(PreparedStatem
ent_b
ase.java:210)
     [java]     at
net.sf.hibernate.impl.BatcherImpl.getResultSet(BatcherImpl.java:87)
     [java]     at
net.sf.hibernate.loader.Loader.getResultSet(Loader.java:795)
     [java]     at net.sf.hibernate.loader.Loader.doQuery(Loader.java:189)
     [java]     at
net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader
.java
:133)
     [java]     at net.sf.hibernate.loader.Loader.doList(Loader.java:950)
     [java]     at net.sf.hibernate.loader.Loader.list(Loader.java:941)
     [java]     at
net.sf.hibernate.loader.CriteriaLoader.list(CriteriaLoader.java:118)
     [java]     at
net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:3571)
     [java]     ... 2 more
     [java] Exception in thread "main"

     [java] Java Result: 1

all:

BUILD SUCCESSFUL
Total time: 15 seconds

aGliZXJuYXRlLWRldmVso6zE+rrDo6ENCg0KCQ0KDQqhoaGhoaGhoaGhoaGhoaGh1sINCsDxo6EN
CiAJCQkJDQoNCqGhoaGhoaGhoaGhoaGhoaFkaGoNCqGhoaGhoaGhoaGhoaGhoaFkaGpAbWFpbC5l
cXluLmFjLmNuDQqhoaGhoaGhoaGhoaGhoaGhoaGhoTIwMDQtMTItMjINCg==

--=20
"Je d=E9teste les ordinateurs : ils font toujours ce que je dis, jamais
ce que je veux !"

Hi Friends,
I am new to hibernate developemants,
Actually i got a requirement where we need to autogenerated string ids =
for our tables i.e. something if the first id is abc1 then next one will =
be  abc2
Can anyone help me out on this with some sample code.
Thanks and regards,
Debidatta

Hi,
You should consider going to the user forum http://forum.hibernate.org
search for id generator.

Debidatta Choudhury, Bangalore wrote:
> Hi Friends,
> I am new to hibernate developemants,
> Actually i got a requirement where we need to autogenerated string ids for our tables i.e. something if the first id is abc1 then next one will be  abc2
> Can anyone help me out on this with some sample code.
> Thanks and regards,
> Debidatta
>
>
> -------------------------------------------------------
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/hibernate-devel
>
>   

All,

=20

I am using the XML Binding functionality of Hibernate 3.0 and need
support for XML namespaces.  I have added to support for a namespace
attribute in the mapping file so one may have a mapping file that looks
like:

=20

<hibernate-mapping>

    <class entity-name=3D"SequenceNumber" table=3D"sequencenumber"
node=3D"SequenceNumber" namespace=3D"http://roughbros.com/manufacture">

        <id name=3D"sequenceNumber" type=3D"int" node=3D"@number">

            <generator class=3D"assigned"/>

        </id>

        <property name=3D"description" node=3D"@description" =
type=3D"string"
column=3D"description"/>

        <set name=3D"PartNumberPatterns" node=3D"PartNumberPatterns"
cascade=3D"all,delete-orphan"
namespace=3D"http://roughbros.com/manufacture">

            <key column=3D"sequenceNumber"/>

            <one-to-many entity-name=3D"PartNumberPattern"/>

        </set>

    </class>

    <class entity-name=3D"PartNumberPattern" =
table=3D"seqnumberpartnumber"
node=3D"PartNumberPattern" =
namespace=3D"http://roughbros.com/manufacture">

        <id name=3D"seqNumPartNumID" type=3D"int" unsaved-value=3D"0"
node=3D"@seqNumPartNumID">

            <generator class=3D"identity"/>

        </id>

        <property name=3D"pattern" node=3D"@pattern" type=3D"string"
column=3D"partNumberPattern"/>

    </class>

</hibernate-mapping>

=20

Then the code was modified to create elements with namespaces when a
namespace has been specified.  The problem is that I have been unable to
track down where the dom4J element is created for the <set> element.
When the code is built with all the changes that I see needing to be
made, the results are:

=20

      <SequenceNumber number=3D"100" description=3D"Steel Shop =
Production
for Shipment" xmlns=3D"http://roughbros.com/manufacture">

        <PartNumberPatterns xmlns=3D"">

          <PartNumberPattern seqNumPartNumID=3D"1" pattern=3D"7.+"/>

          <PartNumberPattern seqNumPartNumID=3D"2" pattern=3D"S.+"/>

        </PartNumberPatterns>

      </SequenceNumber>

=20

=20

Note the <set> element PartNumberPatterns has no namespace.  Does
someone know where the collection elements are created in the code?

=20

=20

Thanks,

=20

Steve

Thread: [Hibernate-devel] (no subject)

An object relational-mapping (ORM) library for Java

hibernate-devel