As a rule you can expect *any* orm framework to be slower than simple JDBC,
there is simply more to do... What you gain from it is ease of maintenance
and implementation which will save you time later (often a lot of time).
As with anything, you need to weigh the benefits of any solution over
anoth
Hi Amit,
I think (not sure) we might have 2 different problems. The Jira you
opened indicates a NPE, whereas my problem is an out-of-memory exception...
Cheers, Iain
Patel Amit wrote:
Hi Craig,
I posted the original issue Iain mentioned in his first post and have
opened a JIRA (https://issu
Continuing on with my monologue on this thread...
The attached patch (does it make it through the list?) removes the
getAddForeignKeySQL() with the return new String[0]; from the SybaseDictionary.
I did a brief test, and with this, and (no cascasde) I get the ALTER TABLE on
Sybase, and as expl
Patrick - I pulled an OpenJPA 1.1.0-SNAPSHOT from SVN and built it
locally to give it a whirl - and indeed this appears to work like a
charm! Great.
Can anybody provide insight on about what timeframe your hoping to push
v1.1 to a release? Roughly.
PS: I'm using the following annotations:
@Per
> What interface should I implement?
The interface for L2 cache is org.apache.openjpa.datacache.DataCache.
> How can I tell openjpa to use my implementation?
In META-INF/persistence.xml
> Which class has an implementation of that interface so I can use that as
> an example?
The basic abstract i
Hello Everyone,
I'm just wondering if anyone else is finding JPA slower than simple jdbc
implementations. I have tried setting up some of the attributes to Lazy
fetch and I still find it to be extremely slow. This is causing my web pages
to load in the upwards of 10 seconds. I have tried running
Hi Kevin,
My original thoughts were they were related because Iain referenced my
original post in his first post. Looking at it more closely, the NPE I
experience is related to using abstract persistable classes and
extending them:
@Entity
@Table(name = "Persons")
@Inheritance(strategy= Inherita
A tool to construct/execute/debug JPQL will be useful indeed.
We are interested to know the progress of this project.
Check if this project has something towards this objective:
http://www.eclipse.org/webtools/dali/main.php
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I thought this was related to 258.
"Kevin Sutter"
<[EMAIL PROTECTED]
om>
> if there is an easy way to make a copy of the object such that it can be
serialized without impacting the > current transaction.
There is no easy answer to tis question :)
Depends on what is being 'copied' in the serialized object.
OpenJPA does provide a facility known as RemoteCommitProvider
I just replied to the other email before I read this one.
So I looked into that namespace yesterday. I thought it was kind of what I
was looking for.
But the method take an objectID - so how would I get the name of the cache
from the object id?
For example the method
protected abstract DataCa
> what would be the correct where clause if I want to check if the user
> "james" is in the users field of this MyObject class:
String jpql = "SELECT p FROM MyObject p WHERE ?1 MEMBER OF users";
em.createQuery(jpql).setParameter(1, "james").getResultList();
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htt
Hi Pinaki -
This sounds quite interesting.
Assuming I want to write my own plugin for the cache.
How would I go about this?
For example:
What interface should I implement?
How can I tell openjpa to use my implementation?
Which class has an implementation of that interface so I can use that as an
e
Firstly, out-of-the-box OpenJPA does not provide an integration with Tangosol
cache. OPenJPA, however, does provide a flexible/pluggable mechanism for L2
cache of your choice. Out-of-the-box OpenJPA provides a concrete
implementation which can target a particular entity to a named partition of
L2
Satrt looking from
interface org.apache.openjpa.datacache.DataCache
And its abstract implementation is a good place to extend
abstract class org.apache.openjpa.datacache.AbstractDataCache
Once you implement your own L2 caches (possibly as an extension of
AbstractDataCache) -- OpenJPA will w
Patel,
Thanks for the JIRA Issue, but OPENJPA-524 describes a NullPointerException
problem and this thread seems to be concerned with OutOfMemory errors. Are
you thinking that somehow these two are related?
Thanks,
Kevin
On Fri, Mar 28, 2008 at 9:41 AM, Patel Amit <[EMAIL PROTECTED]> wrote:
> H
Hi Rajeev,
The product version in trace looked good.
Now, have you followed the example in
(openjpa-persistence-jdbc/src/test/java folder), the java source ?
org.apache.openjpa.persistence.jdbc.TestIsolationLevelOverride
Could you give it a try ?
We were able to get correct SQL generation using DB
Hi,
I'm wondering if I could get some clarification on this method from someone
who's used this? I always seem to get a null back. If I make call this
method
URL xxx = getClass().getResource("/META-INF/persistence.xml");, I get a
valid url that has a fully qualified path to the persistence.xml
Hi Craig,
I posted the original issue Iain mentioned in his first post and have
opened a JIRA (https://issues.apache.org/jira/browse/OPENJPA-524) with a
test case attached to it that reproduces the problem.
Hope this helps.
Amit
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL
Hi Mike,
Thanks for this. Adding the metadatafactory property has fixed running my
testcase as a JUnit test case. I no longer need to add a runtime path
setting to the project directory that holds the META-INF directory (to find
the persistence.xml).
I now have a new problem when running the
Lars,
Table and field mapping via xml is not done in the persitence.xml. It is
only done as part of an orm.xml file. Any defined orm.xml files that you
wish to use need to be specified in your persistence.xml using the
element. But, the actual mapping is done in your orm.xmlfile.
So, if you ha
Iain,
Can you expand on this?
On Wed, Mar 26, 2008 at 10:04 PM, iain <[EMAIL PROTECTED]> wrote:
> FWIW, if I remove the inheritance of the MappedSuperclass, the enhancer
> has no trouble with my application and things operate as they should.
What exactly are you referring to when you say that y
I already use the commons-lang equalsBuilder and hashCodeBuilder, they are good.
But they don't reduce the maintenance problem.
From a safety point of view, there is no way to check programmatically (i.e. in
Maven reporting) that a developer has correctly coded equals() and hashCode()
and the
Any advice?
2008/3/27, Lars Vogel <[EMAIL PROTECTED]>:
>
> Hi,
>
> Can you please sent me an example in which the mapping to a certain table
> is done in persistence.xml?
>
> I use orm.xml to map the class to a certain table:
>
>
>
>
>
>
>
>
Hello,
what would be the correct where clause if I want to check if the user
"james" is in the users field of this MyObject class:
@Entity
public MyObject {
@PersistentCollection
private Collection users;
}
Select t from MyOjbect t JOIN t.users x where 'james' ...
I got it working with a Coll
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