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Posted to users@openjpa.apache.org by Lars Vogel <la...@googlemail.com> on 2008/04/11 19:09:56 UTC
Annotation of Arraylist myList;
Hello,
I would like to persist a object which contains a list of primitives
(Strings). It is possible or can JPA only store real objects?
I tried it an received an error.
Best regards, Lars
Re: Annotation of Arraylist myList;
Posted by Lars Vogel <la...@googlemail.com>.
Hi Catatina,
thank you. Best regards, Lars
2008/4/15, catalina wei <ca...@gmail.com>:
>
> Hi Lars,
> See my comment below
>
>
> On 4/13/08, Lars Vogel <la...@googlemail.com> wrote:
> >
> > Hi Catalina,
> >
> > is it correct that this will be serialized as a BLOB?
>
>
>
> I think it means that instances of datamodel.impl.Person when serialized,
> the field nickNameList will be serialized as a BLOB.
>
>
>
> >
> > I receive the message: 1469 people WARN [main] openjpa.MetaData -
> > OpenJPA cannot map field "datamodel.impl.Person.nickNameList"
> efficiently.
> > It is of an unsupported type. The field value will be serialized to a
> BLOB
> > by default.
> >
> > You are pointing to a directory which I do not have (I downloaded
> > apache-openjpa-1.0.2). Can you please tell me how I can get this
> > directory?
> >
>
>
> OpenJPA source code can be extracted from svn repository location:
> http://svn.apache.org/repos/asf/openjpa
> The release you are interested in is under branch 1.0.x.
> The samples are under openjpa-persistence-jdbc/src/test folder.
>
>
> >
> > Best regards, Lars
> >
> >
> > 2008/4/13, catalina wei <ca...@gmail.com>:
> > >
> >
> > > Hi Lars,
> > > Want to correct my previous email.
> > > OpenJPA does have this feature implemented already, an example can be
> > > found
> > > in
> > >
> > >
> >
> org.apache.openjpa.persistence.annotations.common.apps.annotApp.annotype.OrderByEntity:
> > > @PersistentCollection
> > > @OrderBy
> > > private List<String> strings = new ArrayList();
> > >
> > > If you search for "@PersistentCollection" under
> > > openjpa-persistence-jdbc/src/test/java folder,
> > > you will get lots of examples.
> > >
> > >
> > > Catalina
> > >
> > >
> > > On 4/12/08, Janko Heilgeist <ja...@rzg.mpg.de> wrote:
> > > >
> > > > catalina wei wrote:
> > > >
> > > > > Hi Lars,
> > > > > The feature you are looking for has been addressed in the draft
> > > of JPA
> > > > > 2.0
> > > > > spec Section 2.1.5 Collections of Embeddable Classes and Basic
> > Types.
> > > > > I don't think we have this feature implemented in the current
> > OpenJPA
> > > > > releases.
> > > > >
> > > > > Catalina
> > > > >
> > > > > On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
> > > > >
> > > > > > Hello,
> > > > > >
> > > > > > I would like to persist a object which contains a list of
> > primitives
> > > > > > (Strings). It is possible or can JPA only store real objects?
> > > > > >
> > > > > > I tried it an received an error.
> > > > > >
> > > > > > Best regards, Lars
> > > > > >
> > > > > >
> > > > >
> > > > Hi,
> > > >
> > > > what about @org.apache.openjpa.persistence.PersistentCollection?
> I've
> > > > never used it myself, but someone mentioned this feature a few days
> > ago
> > > on
> > > > this mailinglist.
> > > >
> > > > @Entity
> > > > public MyObject {
> > > >
> > > > @PersistentCollection
> > > > private Collection<String> users;
> > > >
> > > > }
> > > >
> > > > It is not standard-JPA, though.
> > > >
> > > > Janko
> > > >
> > > >
> > >
> >
>
Re: Annotation of Arraylist myList;
Posted by catalina wei <ca...@gmail.com>.
Hi Lars,
See my comment below
On 4/13/08, Lars Vogel <la...@googlemail.com> wrote:
>
> Hi Catalina,
>
> is it correct that this will be serialized as a BLOB?
I think it means that instances of datamodel.impl.Person when serialized,
the field nickNameList will be serialized as a BLOB.
>
> I receive the message: 1469 people WARN [main] openjpa.MetaData -
> OpenJPA cannot map field "datamodel.impl.Person.nickNameList" efficiently.
> It is of an unsupported type. The field value will be serialized to a BLOB
> by default.
>
> You are pointing to a directory which I do not have (I downloaded
> apache-openjpa-1.0.2). Can you please tell me how I can get this
> directory?
>
OpenJPA source code can be extracted from svn repository location:
http://svn.apache.org/repos/asf/openjpa
The release you are interested in is under branch 1.0.x.
The samples are under openjpa-persistence-jdbc/src/test folder.
>
> Best regards, Lars
>
>
> 2008/4/13, catalina wei <ca...@gmail.com>:
> >
>
> > Hi Lars,
> > Want to correct my previous email.
> > OpenJPA does have this feature implemented already, an example can be
> > found
> > in
> >
> >
> org.apache.openjpa.persistence.annotations.common.apps.annotApp.annotype.OrderByEntity:
> > @PersistentCollection
> > @OrderBy
> > private List<String> strings = new ArrayList();
> >
> > If you search for "@PersistentCollection" under
> > openjpa-persistence-jdbc/src/test/java folder,
> > you will get lots of examples.
> >
> >
> > Catalina
> >
> >
> > On 4/12/08, Janko Heilgeist <ja...@rzg.mpg.de> wrote:
> > >
> > > catalina wei wrote:
> > >
> > > > Hi Lars,
> > > > The feature you are looking for has been addressed in the draft
> > of JPA
> > > > 2.0
> > > > spec Section 2.1.5 Collections of Embeddable Classes and Basic
> Types.
> > > > I don't think we have this feature implemented in the current
> OpenJPA
> > > > releases.
> > > >
> > > > Catalina
> > > >
> > > > On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
> > > >
> > > > > Hello,
> > > > >
> > > > > I would like to persist a object which contains a list of
> primitives
> > > > > (Strings). It is possible or can JPA only store real objects?
> > > > >
> > > > > I tried it an received an error.
> > > > >
> > > > > Best regards, Lars
> > > > >
> > > > >
> > > >
> > > Hi,
> > >
> > > what about @org.apache.openjpa.persistence.PersistentCollection? I've
> > > never used it myself, but someone mentioned this feature a few days
> ago
> > on
> > > this mailinglist.
> > >
> > > @Entity
> > > public MyObject {
> > >
> > > @PersistentCollection
> > > private Collection<String> users;
> > >
> > > }
> > >
> > > It is not standard-JPA, though.
> > >
> > > Janko
> > >
> > >
> >
>
Re: Annotation of Arraylist myList;
Posted by Lars Vogel <la...@googlemail.com>.
Hi Catalina,
is it correct that this will be serialized as a BLOB?
I receive the message: 1469 people WARN [main] openjpa.MetaData -
OpenJPA cannot map field "datamodel.impl.Person.nickNameList" efficiently.
It is of an unsupported type. The field value will be serialized to a BLOB
by default.
You are pointing to a directory which I do not have (I downloaded
apache-openjpa-1.0.2). Can you please tell me how I can get this directory?
Best regards, Lars
2008/4/13, catalina wei <ca...@gmail.com>:
>
> Hi Lars,
> Want to correct my previous email.
> OpenJPA does have this feature implemented already, an example can be
> found
> in
>
> org.apache.openjpa.persistence.annotations.common.apps.annotApp.annotype.OrderByEntity:
> @PersistentCollection
> @OrderBy
> private List<String> strings = new ArrayList();
>
> If you search for "@PersistentCollection" under
> openjpa-persistence-jdbc/src/test/java folder,
> you will get lots of examples.
>
>
> Catalina
>
>
> On 4/12/08, Janko Heilgeist <ja...@rzg.mpg.de> wrote:
> >
> > catalina wei wrote:
> >
> > > Hi Lars,
> > > The feature you are looking for has been addressed in the draft
> of JPA
> > > 2.0
> > > spec Section 2.1.5 Collections of Embeddable Classes and Basic Types.
> > > I don't think we have this feature implemented in the current OpenJPA
> > > releases.
> > >
> > > Catalina
> > >
> > > On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
> > >
> > > > Hello,
> > > >
> > > > I would like to persist a object which contains a list of primitives
> > > > (Strings). It is possible or can JPA only store real objects?
> > > >
> > > > I tried it an received an error.
> > > >
> > > > Best regards, Lars
> > > >
> > > >
> > >
> > Hi,
> >
> > what about @org.apache.openjpa.persistence.PersistentCollection? I've
> > never used it myself, but someone mentioned this feature a few days ago
> on
> > this mailinglist.
> >
> > @Entity
> > public MyObject {
> >
> > @PersistentCollection
> > private Collection<String> users;
> >
> > }
> >
> > It is not standard-JPA, though.
> >
> > Janko
> >
> >
>
Re: Annotation of Arraylist myList;
Posted by Lars Vogel <la...@googlemail.com>.
Hi Catalina,
thank you very much for your quick and helpful answer. Best regards, Lars
2008/4/13, catalina wei <ca...@gmail.com>:
>
> Hi Lars,
> Want to correct my previous email.
> OpenJPA does have this feature implemented already, an example can be
> found
> in
>
> org.apache.openjpa.persistence.annotations.common.apps.annotApp.annotype.OrderByEntity:
> @PersistentCollection
> @OrderBy
> private List<String> strings = new ArrayList();
>
> If you search for "@PersistentCollection" under
> openjpa-persistence-jdbc/src/test/java folder,
> you will get lots of examples.
>
>
> Catalina
>
>
> On 4/12/08, Janko Heilgeist <ja...@rzg.mpg.de> wrote:
> >
> > catalina wei wrote:
> >
> > > Hi Lars,
> > > The feature you are looking for has been addressed in the draft
> of JPA
> > > 2.0
> > > spec Section 2.1.5 Collections of Embeddable Classes and Basic Types.
> > > I don't think we have this feature implemented in the current OpenJPA
> > > releases.
> > >
> > > Catalina
> > >
> > > On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
> > >
> > > > Hello,
> > > >
> > > > I would like to persist a object which contains a list of primitives
> > > > (Strings). It is possible or can JPA only store real objects?
> > > >
> > > > I tried it an received an error.
> > > >
> > > > Best regards, Lars
> > > >
> > > >
> > >
> > Hi,
> >
> > what about @org.apache.openjpa.persistence.PersistentCollection? I've
> > never used it myself, but someone mentioned this feature a few days ago
> on
> > this mailinglist.
> >
> > @Entity
> > public MyObject {
> >
> > @PersistentCollection
> > private Collection<String> users;
> >
> > }
> >
> > It is not standard-JPA, though.
> >
> > Janko
> >
> >
>
Re: Annotation of Arraylist myList;
Posted by catalina wei <ca...@gmail.com>.
Hi Lars,
Want to correct my previous email.
OpenJPA does have this feature implemented already, an example can be found
in
org.apache.openjpa.persistence.annotations.common.apps.annotApp.annotype.OrderByEntity:
@PersistentCollection
@OrderBy
private List<String> strings = new ArrayList();
If you search for "@PersistentCollection" under
openjpa-persistence-jdbc/src/test/java folder,
you will get lots of examples.
Catalina
On 4/12/08, Janko Heilgeist <ja...@rzg.mpg.de> wrote:
>
> catalina wei wrote:
>
> > Hi Lars,
> > The feature you are looking for has been addressed in the draft of JPA
> > 2.0
> > spec Section 2.1.5 Collections of Embeddable Classes and Basic Types.
> > I don't think we have this feature implemented in the current OpenJPA
> > releases.
> >
> > Catalina
> >
> > On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
> >
> > > Hello,
> > >
> > > I would like to persist a object which contains a list of primitives
> > > (Strings). It is possible or can JPA only store real objects?
> > >
> > > I tried it an received an error.
> > >
> > > Best regards, Lars
> > >
> > >
> >
> Hi,
>
> what about @org.apache.openjpa.persistence.PersistentCollection? I've
> never used it myself, but someone mentioned this feature a few days ago on
> this mailinglist.
>
> @Entity
> public MyObject {
>
> @PersistentCollection
> private Collection<String> users;
>
> }
>
> It is not standard-JPA, though.
>
> Janko
>
>
Re: Annotation of Arraylist myList;
Posted by Lars Vogel <la...@googlemail.com>.
Hi Janko,
thank you very much.
Best regards, Lars
2008/4/12, Janko Heilgeist <ja...@rzg.mpg.de>:
>
> catalina wei wrote:
>
> > Hi Lars,
> > The feature you are looking for has been addressed in the draft of JPA
> > 2.0
> > spec Section 2.1.5 Collections of Embeddable Classes and Basic Types.
> > I don't think we have this feature implemented in the current OpenJPA
> > releases.
> >
> > Catalina
> >
> > On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
> >
> > > Hello,
> > >
> > > I would like to persist a object which contains a list of primitives
> > > (Strings). It is possible or can JPA only store real objects?
> > >
> > > I tried it an received an error.
> > >
> > > Best regards, Lars
> > >
> > >
> >
> Hi,
>
> what about @org.apache.openjpa.persistence.PersistentCollection? I've
> never used it myself, but someone mentioned this feature a few days ago on
> this mailinglist.
>
> @Entity
> public MyObject {
>
> @PersistentCollection
> private Collection<String> users;
>
> }
>
> It is not standard-JPA, though.
>
> Janko
>
>
Re: Annotation of Arraylist myList;
Posted by Janko Heilgeist <ja...@rzg.mpg.de>.
catalina wei wrote:
> Hi Lars,
> The feature you are looking for has been addressed in the draft of JPA 2.0
> spec Section 2.1.5 Collections of Embeddable Classes and Basic Types.
> I don't think we have this feature implemented in the current OpenJPA
> releases.
>
> Catalina
>
> On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
>> Hello,
>>
>> I would like to persist a object which contains a list of primitives
>> (Strings). It is possible or can JPA only store real objects?
>>
>> I tried it an received an error.
>>
>> Best regards, Lars
>>
>
Hi,
what about @org.apache.openjpa.persistence.PersistentCollection? I've
never used it myself, but someone mentioned this feature a few days ago
on this mailinglist.
@Entity
public MyObject {
@PersistentCollection
private Collection<String> users;
}
It is not standard-JPA, though.
Janko
Re: Annotation of Arraylist myList;
Posted by catalina wei <ca...@gmail.com>.
Hi Lars,
The feature you are looking for has been addressed in the draft of JPA 2.0
spec Section 2.1.5 Collections of Embeddable Classes and Basic Types.
I don't think we have this feature implemented in the current OpenJPA
releases.
Catalina
On 4/11/08, Lars Vogel <la...@googlemail.com> wrote:
>
> Hello,
>
> I would like to persist a object which contains a list of primitives
> (Strings). It is possible or can JPA only store real objects?
>
> I tried it an received an error.
>
> Best regards, Lars
>