only 2 Queries, but you will bulk load
several ACLs
Bye
danilo
Tino Schöllhorn wrote:
Hi Armin,
thanks for your reply. Do you think it would be worth a try to
materialize our objects with pure SQL - but after initializing them to
work with them with OJB?
Thanks for your opinion.
Regards
Tino
Hi Armin,
thanks for your reply. Do you think it would be worth a try to
materialize our objects with pure SQL - but after initializing them to
work with them with OJB?
Thanks for your opinion.
Regards
Tino
Armin Waibel schrieb:
Hi Tino,
Tino Schöllhorn wrote:
Hi,
we are using OJB
Hi,
we are using OJB-1.0.1 and evertything works fine. Now I have the
following situation:
We have a security-mechanism which uses the classes ACL
(AccessControlList) and ACLEntry. One ACL has many ACLEntries. Now when
using the standard OJB-Materialization methods OJB uses 2 SQLs to
mater
Hi,
this is not really an issue concerning OJB. You should try to use
JavaBeans accessors/mutators to achieve your goal. Look at the
spring-framework for example - they have a mapping from forms to javabeans.
Tino
許議中 wrote:
Hi!
Below is running in OJB 1.0.4 & Cocoon 2.1.0
I've a set of t
Hi,
I want to change the used Proxy-Implementation of "some" of my
collections. So I have written a "MyProxyListImpl" class which
implements the CollectionProxy interface:
class MyProxyListImpl
extends ArrayList implements CollectionProxy {
// the 2 constructors.
}
Then I changed the colle
Hi,
I think you can exactly do that. Just use a thread variable (see
ThreadLocal) and store a PB in that. We are doing exactly that and it
works great.
You just have to close the PBs when the work of your thread is done, of
course.
Tino
Ernst Temp wrote:
Hello,
I am developing an applic
Hi,
read: http://db.apache.org/ojb/docu/guides/ojb-properties.html.
Have a look at the examples. You don't explicitly load the
repository.xml file.
Tino
Sergio del Amo Caballero wrote:
Hi all,
I am getting an error while trying to retrieve my repository.xml file.
My repository.xml is under
e the impact to our
system.
With regards
Tino
Armin Waibel wrote:
Hi Tino,
Tino Schöllhorn wrote:
Hi,
I have a situation where we are running out of PersistenceBrokers
(using 1.0.1). We have a web application which so far runs fine - but
somehow some requests are causing the application not to
An additional question:
How could I monitor the PB-Pool and the Connection-Pools of OJB?
Tino
Tino Schöllhorn wrote:
Hi,
I have a situation where we are running out of PersistenceBrokers (using
1.0.1). We have a web application which so far runs fine - but somehow
some requests are causing
Hi,
I have a situation where we are running out of PersistenceBrokers (using
1.0.1). We have a web application which so far runs fine - but somehow
some requests are causing the application not to close its PB.
We can see this when we are monitoring the used connections of mysql
which are sl
this
flag in the connection string to disable server side prepared statements:
jdbc:mysql://&useServerPrepStmts=false;
Tino
Tino Schöllhorn wrote:
Hi,
probable this isn't the correct forum - but nevertheless I hope that
some can help me out.
We are using OJB 1.0.1 (we'
Hi,
probable this isn't the correct forum - but nevertheless I hope that
some can help me out.
We are using OJB 1.0.1 (we're waiting for a new release to change to)
and MySQL 5.0.18. Everything is working fine and OJB works like a charm.
Now our sites are getting more traffic and we wanted
Hi,
I have to put OJB-Query-Objects as key in a Map. Now I wonder how I
would compute the hashCode of those objects. A first idea was to use the
generated SQL-Code for such a Query as the key. How would I get the
SQL-Code which gets generated for a Query-Object?
But any other ideas how to co
Hi,
I think you could do a ReportQuery where you can specify an SQL. Just
look in the tutorials and the JavaDocs.
Tino
k jee wrote:
Hi All,
I need some advice on how to achieve the following with ojb.
Select T1.FLD1,T1.FLD2, T2.FLD2,T2.FLD3,T3.FLD1,T3.FLD2,T3.FLD4 from table1 T1, t
Hi,
thanks. That would be great.
Tino
Armin Waibel wrote:
Hi Tino,
Tino Schöllhorn wrote:
Hi,
we are currently using OJB 1.0.1 and are thinking about updating to
the latest release. When do you think the next version 1.0.5 will be
released?
Last week I wasn't able to work on O
Hi,
we are currently using OJB 1.0.1 and are thinking about updating to the
latest release. When do you think the next version 1.0.5 will be released?
With regards
Tino
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For additio
Hi,
I have a situation where I want to prevent the creation of an object in
the database. Is there a way to prevent the insertion via the
callback-methods (beforeInsert) ? Throwing an Exception in these
methods doesn't work, because the situation is not an error and I want
to prevent the
Hi,
I want to use an own implementation of a java.util.List-Class in my
project and I am trying to find the place where to change the default
List implementation. I couldn't find it int the OJB.properties file.
I am using OJB 1.0.1.
With regards
Tino
---
Hi,
as I can see you are probably not closing your PB-instances. You have to
close the PB instances with PB.close() after usage. This is no
connection-pool problem but a PB-Pool problem.
Hope that helped.
Tino
ABOU LINA wrote:
I give you the stack trace about error message :
org.apache.oj
all
users in that group.
I don't know if this is a bug or a feature ;-) What do you think?
Tino
Tino Schöllhorn wrote:
Hi,
we are using OJB 1.0.1 and we have found a very strange issue:
We have a class "User" and a class "Group". Now we have a quite common
and si
Hi,
we are using OJB 1.0.1 and we have found a very strange issue:
We have a class "User" and a class "Group". Now we have a quite common
and simple use-case that a User becomes member of a Group. The code for
this is like:
User user = ...;
Group group = ...;
user.addGroup(group);
pb.begin
Hi,
we are currently thinking of moving from JDK1.4.2 to Java 5.0.x. The
most interesting part of new Java Editition is the use of Generics which
will lead to a much better understandable code-base. I have a few
questions, which might be answered by someone of the OJB community:
- Are there
Hi,
would you post your loop-code, so it is possible to see what changes you
are doing?
Tino
T. K. Chris wrote:
HI,
I have tried to access a database through a loop.
while the loop is running, I manually modify (in live)
and commit a record in the data base. The modification
is not detected, at t
Hi,
I have 3 classes which model the "association"-class pattern. Persons
can take part in many Projects with a special role. With that in mind I
have the following classes:
Person {
Collection projectPersons;
}
ProjectPerson {
Person p;
Project pr;
String role;
}
Hi,
we are currently working at an web-application, which is currently
single-threaded. For performance reason it is obvious that it should be
multi-threaded. We are using OJB as persistence-layer. Now my question:
Does anyone has best practices for creating an thread-safe object-model?
Suppose
Hi Ilias,
well I not for starting any flame wars. But if you think there should be
a common, better FAQ list and the existing documentation is not enough -
why don't you just start a FAQ-List and try to improve this project. As
you already stated: this is open source and anyone who is interested
Hi,
I have a weird problem. We are using OJB 1.0 and are greatly satisfied.
Now we stumbled across a strange problem. When deleting a Person-Object
with:
Person p = ...;
pb.beginTransaction();
pb.delete(p);
pb.commitTransaction();
we get (sometimes) the following Exception:
java.util.ConcurrentM
Hi,
I don't know how to get this information. But you could quite easily
configure the connection-managers as such that they are automatically
closing "forgotten" persistence-broker instances and their connections.
Please see: http://db.apache.org/ojb/docu/guides/connection.html
Rodrigo G. Tavar
Hi,
we are using OJB 1.0 and are greatly satisfied. Now we encounter some
cases where we have recursive data-structures, like:
class A {
Collection someAObjects; // Collection
}
So every A-Object can have several sub-object of type A.
Currently we mapped this case as every other 1:N-relat
Hi,
we are using OJB in a Tomcat-Application and are greatly satisfied. Now
we are moving our application to a windows 2003 server with 2 processors
and we encounter some problems. One is the following:
We implemented a DownloadServlet which is responsible for delivering
Streams of previously u
Hi,
we are using OJB 1.0 in Servlets and it works great so far. Now I
noticed that whenever we start our servlets OJB opens all Connections
which have been defined in repository_database.xml (no
ConnectionPooling. so far so good. But, whenever we restart the servlets
(for example when recompili
Hi Thomas,
I am perfectly aware of that - but in my opinion you're already doing
the right thing: emulate the behaviour of paging when the underlying db
isn't supporting it. But if the underlying db is supporting this feature
(many db implement this: mysql, mssql, oracle...) it should be used
b
tino,
ojb does not use the limit-clause yet. the paging is implemented by
positioning the cursor in the resultset.
jakob
Tino Schöllhorn schrieb:
Hi,
I am using MySQL and OJB and now I want to create a Query over a large
table. For performance reason I want to use the "pageing"-featur
Hi,
I am using MySQL and OJB and now I want to create a Query over a large
table. For performance reason I want to use the "pageing"-feature - but
I have the feeling that currently OJB is somehow ommitting this (the
result is fine - but the SQL seems not to include the LIMIT-clause).
Is there a
rt+for+Non-Decomposed+m%3An+Mappings
Please post more info (metadata mapping)
regards,
Armin
Tino Schöllhorn wrote:
Hi,
several days ago I changed from RC6 to OJB 1.0.0 and so far it is
running fine. But now I encounter a strange bug - something which has
not happened with RC6.
I have a class
Hi,
several days ago I changed from RC6 to OJB 1.0.0 and so far it is
running fine. But now I encounter a strange bug - something which has
not happened with RC6.
I have a class Team and there is a N-M-Relation between Teams and Subteam.
Now I am adding some (already persistent) Teams t1...tn t
Hi,
I think this topic has been discussed before. But I am not sure what the
current status is:
I have two classes A and B. A has a Collection of Bs. Now if I delete a
B object which is part of a Collection of an A object the B object is
correctly deleted in the database and is also removed fro
do now? Should I
ignore this warning? Or do I have to create a not-persistent abstract
superclass?
Tino
Thomas Dudziak wrote:
Tino Schöllhorn wrote:
Hi,
I have I inheritance-problem. I want to map two classes to one table.
They are defined as followed:
class A {
int id;
protected String
Hi,
thanks now it works. But why do I have to map the attributes of the
superclass in the subclass again? Is this intended or is the inheritance
of descriptors a not yet enhancement?
Regards
Tino
Thomas Dudziak wrote:
Tino Schöllhorn wrote:
Hi,
I have I inheritance-problem. I want to map two
Hi,
I have I inheritance-problem. I want to map two classes to one table.
They are defined as followed:
class A {
int id;
protected String ojbConcreteClass;
// some attributes
}
class B extends A {
// some additional attributes
}
I created class-descriptors f
roomNo and roomSuffix are attributes on the RoomImpl object.
Wally
-Original Message-
From: news [mailto:[EMAIL PROTECTED] On Behalf Of Tino Schöllhorn
Sent: Friday, April 30, 2004 2:41 AM
To: [EMAIL PROTECTED]
Subject: Collection creation and sorting
Hi,
I have a (probably simple) question
Hi,
I have a (probably simple) question about sorting collections:
I have 3 classes which I successfully mapped to OJB:
class Company {
Collection companyTeams;
public Collection getTeams() {
//???
}
}
class CompanyTeam {
Company c;
Team t;
int pos;
}
class Team {
String na
Hi,
I have a (quite small) problem: I want that each table in my database
has an attribute "CreationDate" which reflects the time when this row
has been inserted. But I don't want to use any database-specific
datatypes or functions.
My current idea is really simple and uses the callback-mechan
/ adds "WHERE dept.department =
'A'"
crit.addEqualTo( "deleted", "false" ); // adds "WHERE sub.deleted =
'false'"
Take a look at the tutorial, its really helpful in describing better
ways to
setup your data and how to query it.
Charlie
Hi,
I am trying to change the behaviour of loading N-M-Relations - but I
have some trouble here.
Essentially I have one class "Department" and a relationship
"subdepartment" (so I have 2 tables Department and
Department_Department). Now I want that OJB loads only those
subdepartments of a Dep
ure your queries are always the same, and I really like not
having to fuss
about with the PersistenceBroker all the time.
Charlie
Tino Schöllhorn wrote:
Hi,
that sounds great. Is there a way to tell OJB that it always should
use MyCriteria from the QueryFactory?
Or do I have to impl
ues to the
criteria.
Charlie
Tino Schöllhorn wrote:
Hallo Daniel,
that sound great. But still I do have one question: how could you then
load all non-deleted object *without* using the deleted-flag. I mean
something like
Criteria crit = new Criteria();
// I can use any criteria here but I don
mean to
not flag the delete in the database at all, but only treat it as such
in the application -- that is a bit trickier, but can probably be done
via pb callbacks/row readers.
-Brian
On Mar 23, 2004, at 6:21 AM, Tino Schöllhorn wrote:
Hi,
I want to implement something like a soft-delete:
Ob
Hallo,
ich habe mal versucht, das Rechtekonzept nochmal zusammenzufassen. Wäre
gut, wenn ihr Euch es mal anschauen würdet.
Ihr findet es im Projekt "1.Release" im Intranet unter dem Order "Konzepte".
Gruss
Tino
-
To unsubscri
Hi,
I want to implement something like a soft-delete:
Objects should be marked as "deleted" in its corresponing table and OJB
should just ignore them when it is materializing or querying them.
Where would be the best point to start when I want to implement this
feature? I just played around wi
Hi,
I am successfully using OJB rc5 and I really appreciate this tool. Now I
want to extend my data-model so that I have 2 additional fields:
- creationDate: the date the object/row was created
- lastUpdate: the date the object/row was last updated
Currently we are using MySQL as database, but w
Hi,
thanks. I wasn't aware of the PeristenceBrokerPool concept.
regards
Tino
Armin Waibel wrote:
Hi Tino,
Tino Schöllhorn wrote:
Hi,
I am using OJB(cvs head from 2 weeks ago) in Tomcat 5.0. There I have
several PersistenceBroker which I close after each request
Hi,
I am using OJB(cvs head from 2 weeks ago) in Tomcat 5.0. There I have
several PersistenceBroker which I close after each request with
PersistenceBrokerFactory.realeaseAll().
After some time I get the following error:
org.apache.ojb.broker.PBFactoryException: Borrow broker from pool
failed
Sorry,
it was a stupid error on myside: I forgot to state the inverse-foreignkey.
Tino Schöllhorn wrote:
Hi,
I have a quite simple problem: I have a table company, a table team and
a table company_team which stores the relations.
Now I have to introduce a position-attribute in my
Hi,
I have a quite simple problem: I have a table company, a table team and
a table company_team which stores the relations.
Now I have to introduce a position-attribute in my company_team - table.
I mapped this to the ojb-repository.xml file - but now it behaves quite
strange: When I select 1
Tino,
Tino Schöllhorn wrote:
Hi,
I am using OJBrc5 (rebuild from CVS head) and I have some troubles
with my database: sometimes (not always) when I want to insert or
update an object via ojb the JdbcOdbcBridge throws an function
sequence error.
From my previous experiences this error occurs
Hi Armin,
I am using the ObjectCachePerBrokerImpl so I added:
org.apache.ojb.broker.cache.ObjectCachePerBrokerImpl.LogLevel=DEBUG
to my OJB.properties file.
But there is no debugging-output. :-(
Tino
Armin Waibel wrote:
Hi,
Tino Schöllhorn wrote:
Hi,
I am frequently encountering
Hi,
I am using OJBrc5 (rebuild from CVS head) and I have some troubles with
my database: sometimes (not always) when I want to insert or update an
object via ojb the JdbcOdbcBridge throws an function sequence error.
From my previous experiences this error occurs when a resultset r is
read and
Hi,
I am frequently encountering OutOfMemory-Errors in my application. Is
there a way to debug information about the used cache of OJB?
Tino
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Hi,
sorry I got it. It is a database-error. Access doesn't return memo
fields when using distinct (g). my fault.
tino
Tino Schöllhorn wrote:
Hi,
I could pinpoint the described error which has been described in an
earliear thread (Cache issue: 13.2.2004). It all boils t
Hi,
I could pinpoint the described error which has been described in an
earliear thread (Cache issue: 13.2.2004). It all boils to the
QueryFactory.newQuery(Class, Criteria, boolean) method. if I execute the
code to retrieve an instance of class Person with:
Criteria crit = new Criteria();
crit
addEqualTo("id", "85");
Query query = QueryFactory.newQuery(Person.class, crit, true);
After that query the LONGVARCHARS aren't correctly instantiated.
I think that this might be an error of OJB.
With regards
Tino
Armin Waibel wrote:
Hi,
Tino Schöllhorn wrote:
Hi,
I ha
strange - in my opinion.
regards
tino
Armin Waibel wrote:
Hi,
Tino Schöllhorn wrote:
Hi,
I have (again) something weird which I suppose is just a configuration
problem:
I have a class Person which has one LONGVARCHAR-Field. The first time
the object is accessed the LONGVARCHAR-field is returned c
Hi,
I have (again) something weird which I suppose is just a configuration
problem:
I have a class Person which has one LONGVARCHAR-Field. The first time
the object is accessed the LONGVARCHAR-field is returned correctly. But
the second time it is accessed it returns just 256 (I suppose) chara
Armin Waibel wrote:
Hi Tino,
Tino Schöllhorn wrote:
Hi,
I have a very, very strange phenomenom: I have one web-application
which handles several clients. Each client uses its own database, but
the database schema is always the same.
Our web-application handles requests for all clients, so I ha
Hi,
I have a very, very strange phenomenom: I have one web-application which
handles several clients. Each client uses its own database, but the
database schema is always the same.
Our web-application handles requests for all clients, so I have to
switch the PersistenceBroker as soon as I noti
Hi,
has anyone tried using OJB with MSAccess and can successfully handle
BLOBs? I am wondering if I could use OJB to handle this.
With regards
Tino
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tory.dtd
First all reference-descriptor, then all collection-descriptor
regards,
Armin
Tino Schöllhorn wrote:
Hi,
I want to ensure that the repository.xml-file is "syntactically" (is
that english) correct. So I am trying to validate it against its dtd
with the following code
Hi,
I want to ensure that the repository.xml-file is "syntactically" (is
that english) correct. So I am trying to validate it against its dtd
with the following code:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
DocumentBuilder bui
Hello Armin,
is there another way to verify the mappings which is not outdated?
regards,
Tino
Armin Waibel wrote:
Hi Tino,
the VerifyMappingsTask is a little bit outdated, thus I don't know if
you will get an adequate result.
regards,
Armin
Tino Schöllhorn wrote:
Hi,
I wa
Hi Thomas,
thanks for your answer. I checked again, but still I get a
NoClassDefFoundError. Unfortuanately there is not stacktrace so it is
quite difficult to find it.
The class kos.generator.DataObject is located in the ojb-generator.jar
file. This jar is correct because I am using this JAR a
Hi,
I want to automatically check the integrity of the repository.xml file
and the corresponding database-mapping. So I tried out the
VerifyMappingTask which is includes in the OJB-distribution (I am using
rc5). But I am having problems with the classpath. Here is the situation:
- My persisten
Hi,
I have a quite strange problem: I am trying to start an ojb-based
application via ant and the commons-laucher tool. I have struggled some
time with setting the classpath correctly and it works now fine - except
for one ugly thing: I had to pass an ABSOLUTE path in the OJB.properties
-file
Hi there,
this is a topic which is not specifically bound to ojb - but since there
are a lot of users out there who might have the same problem (and
hopefully a solution) I post this message here:
I have several classes which I use to map tables to objects. Now I am
wondering what the most app
Hi,
I am using OJB and Access at the moment. So far everything worked fine,
and I can also store memofields to the database. Now I integrated my
classes in a web-application and there I get a really strange behaviour,
when I save my data to the database:
A) When I start Tomcat (5.0) and edit a
Hi Olli,
and what about changing the default behaviour again? Honestly I think it is
pretty "dangerous" because when I want to remove a relation I just want to
remove this relation. It is another thing when I remove an instance of a
class - then the default behaviour could delete the relations as
rayList as a collection class (by default it's a
> RemovalAwareCollection)
>
> like this (as an a attribute of the collection descriptor element):
> collection-class=
> "org.apache.ojb.broker.util.collections.ManageableArrayList"
>
>
> - Original Message -
&
Hi,
the autodelte flag is set to false. Here is my complete collectin-descriptor
Any ideas?
Tino
- Original Message -
From: "balza" <[EMAIL PROTECTED]>
Newsgroups: gmane.comp.jakarta.ojb.user
Sent: Thursday, November 27, 2003 4:06 PM
Subject: Re:Deletion Bug!?
autode
Hi,
I have a really weird problem and I don't if I am doing something wrong or
if this is a bug of OJB.
I have basically 2 classes: Person and Department. I defined a N:M relation
between those two.
Now I want to remove a Department from a Person. But what happens is, that
OJB is trying to delet
"Graham Lounder" <[EMAIL PROTECTED]> schrieb im Newsbeitrag
news:[EMAIL PROTECTED]
> Hey all,Hi,
as I can see you only have to set the data-type in your repository.xml of
the memo-field to LONGVARCHAR.
I have had the same problem, but now it is running fine.
Tino
>
> I'm trying to save a strin
Hi,
currently I am using OJB 1.0rc4 for the object-relational mapping with MS
Access an the Jdbc-Odbc-Bridge from SUN. I know that there are some issues
with this "database" but
nonetheless I have to make OJB working with it. So far everything worked
quite well and I couldn't find any of those dis
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