1. Thanks, that works great.
2. OK; understand perfectly what your saying; thanks for detailing. (Now
our data architect WILL probably cry that "there are unncessary columns
fetched!". In the "upper layer" that is creating the FetchPlan,
dynamically, we would actually have the information to know
Hello,
FYI, a little blog post about how to "capture" the SQL which OpenJPA
executed, to test against it in a JUnit, using a JDBCListener :
http://www.vorburger.ch/blog1/2008/08/testing-openjpa-sql-statements-usi
ng.html
Thought this may be useful to others.
Cheers,
Michael
_
I should have found this... Thank you very much!
Pinaki Poddar wrote:
>
> Hi,
> When an element X is removed from a collection C in memory -- it does
> not imply that the record for X is deleted from database.
>Or for that matter, setting
> A.b = null does not imply that record for b
Hi,
When an element X is removed from a collection C in memory -- it does not
imply that the record for X is deleted from database.
Or for that matter, setting
A.b = null does not imply that record for b is deleted from database.
Essentially it aligns well with the fact that Java relat
Hi,
You might want to add @ElementDependent as shown below:
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY,
mappedBy = "parent")
@OrderBy(value = "ordr")
@ElementDependent
private List children = new ArrayList();
so that when you do:
em.getTransaction().
Hi,
With MySQL this is what happens:
1. Definition of a column with default timestamp value
@Column(name="ts", columnDefinition="TIMESTAMP DEFAULT
CURRENT_TIMESTAMP")
private Timestamp ts;
2. OpenJPA issues SQL to create the table:
CREATE TABLE AutoInc (id BIGINT NOT NULL, ts TIM
Marc,
If I correctly understand the result you seek, you need to do a three
way join across the entities. The JPQL below may be what you need (or
close to it). The IN() join syntax may also work, but I haven't tried
it.
"SELECT z FROM Magazine x JOIN x.articles y JOIN y.paragraph z where
y.auth
Michael,
Your situation sounds similar to one I solved with a database view. Is it
possible in your environment to introduce a new view and build a new JPA entity
on top of that? If so, add the view and define it with whatever derived
columns you need to support your use cases using only stan
By chance I just "stumbled upon" the JDBCFilterListener interface, while
looking for something totally different.
It's implementations like GetColumn and more interestingly SQLEmbed, that
"price < sql(\"(SELECT AVG (PRICE) FROM PRODUCT_TABLE)\")", look pretty
interesting, and I think is for wh
HI,
i know that i can entities in relations like this:
SELECT x FROM Magazine x, IN(x.articles) y WHERE y.authorName = 'John
Doe'
But what if i have this objectmodel:
Magazine->Articles->Paragraphs
And now i want to query for paragraph.number = 2 ???
Your example works with a one level n
Hello,
I have two entities PARENT & CHILD defined below.
I try to reset the Parent.children list, or remove the parent entity, but
nothing happen in database for my children (I cant get my children anymore
from Java code (parent.getChildren()), but they are still present in
database even after a
>Could you post your entity source or test case that reproduces the problem
?
>Also post your existing table's DDL that contains the foreign key
>definition.
Catalina,
Here is the test case that reproduces the problem:
http://n2.nabble.com/file/n675458/identifying_rel_test.zip
identifying_rel
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