Home » Modeling » EMF » util.List instead of EList?
| util.List instead of EList? [message #481707] |
Sun, 23 August 2009 20:04  |
Eclipse User |
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Originally posted by: yoduderoo.netscape.net
Hi,
In order to work with another framework, OpenJPA, I need an EMF feature
that is a java.util.List instead of an EList.
The model is specified in XML Schema. How do I tell the generator that a
given element with maxOccurs="unbounded" is to be implemented as a
java.util.List?
Thanks,chris
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| Re: util.List instead of EList? [message #481718 is a reply to message #481717] |
Mon, 24 August 2009 05:44  |
| Eclipse User |
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Originally posted by: yoduderoo.netscape.net
Hi Ed,
Internally, in the Impl, "Suppress EMF Types" generates an EList,
although the interface is now "List<T> getThings()". Is there a way to
generate an ArrayList for that feature instead? If not, then I will
hand-code an ArrayList to mirror the EList. OpenJPA wraps these features
in a proxy and expects Java collection types, apparently.
Thanks, chris
Ed Merks wrote:
> Chris,
>
> Try Suppress EMF Types in the GenModel's Model Features properties.
>
>
> Yodude wrote:
>> Hi,
>> In order to work with another framework, OpenJPA, I need an EMF
>> feature that is a java.util.List instead of an EList.
>>
>> The model is specified in XML Schema. How do I tell the generator that
>> a given element with maxOccurs="unbounded" is to be implemented as a
>> java.util.List?
>>
>> Thanks,chris
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| Re: util.List instead of EList? [message #481720 is a reply to message #481718] |
Mon, 24 August 2009 05:56 |
 Ed Merks
Messages: 33142
Registered: July 2009 |
Senior Member |
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Chris,
Array lists aren't going to properly support deserialization so that's
likely a dead end path. Perhaps you'd be better off using Teneo's
integration with EclipseLink's JPA support.
Yodude wrote:
> Hi Ed,
> Internally, in the Impl, "Suppress EMF Types" generates an EList,
> although the interface is now "List<T> getThings()". Is there a way to
> generate an ArrayList for that feature instead? If not, then I will
> hand-code an ArrayList to mirror the EList. OpenJPA wraps these
> features in a proxy and expects Java collection types, apparently.
> Thanks, chris
>
> Ed Merks wrote:
>> Chris,
>>
>> Try Suppress EMF Types in the GenModel's Model Features properties.
>>
>>
>> Yodude wrote:
>>> Hi,
>>> In order to work with another framework, OpenJPA, I need an EMF
>>> feature that is a java.util.List instead of an EList.
>>>
>>> The model is specified in XML Schema. How do I tell the generator
>>> that a given element with maxOccurs="unbounded" is to be implemented
>>> as a java.util.List?
>>>
>>> Thanks,chris
Ed Merks
Professional Support: https://www.macromodeling.com/
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| Re: util.List instead of EList? [message #481722 is a reply to message #481720] |
Mon, 24 August 2009 06:14 |
| Eclipse User |
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Originally posted by: yoduderoo.netscape.net
Hi Ed,
The JPA implementation is fixed, can't switch to EclipseLink at this
point. The objects are not deserialized, so that is not a problem.
Thanks, chris
Ed Merks wrote:
> Chris,
>
> Array lists aren't going to properly support deserialization so that's
> likely a dead end path. Perhaps you'd be better off using Teneo's
> integration with EclipseLink's JPA support.
>
>
> Yodude wrote:
>> Hi Ed,
>> Internally, in the Impl, "Suppress EMF Types" generates an EList,
>> although the interface is now "List<T> getThings()". Is there a way to
>> generate an ArrayList for that feature instead? If not, then I will
>> hand-code an ArrayList to mirror the EList. OpenJPA wraps these
>> features in a proxy and expects Java collection types, apparently.
>> Thanks, chris
>>
>> Ed Merks wrote:
>>> Chris,
>>>
>>> Try Suppress EMF Types in the GenModel's Model Features properties.
>>>
>>>
>>> Yodude wrote:
>>>> Hi,
>>>> In order to work with another framework, OpenJPA, I need an EMF
>>>> feature that is a java.util.List instead of an EList.
>>>>
>>>> The model is specified in XML Schema. How do I tell the generator
>>>> that a given element with maxOccurs="unbounded" is to be implemented
>>>> as a java.util.List?
>>>>
>>>> Thanks,chris
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| Re: util.List instead of EList? [message #481737 is a reply to message #481722] |
Mon, 24 August 2009 07:06 |
Ed Merks
Messages: 33142
Registered: July 2009 |
Senior Member |
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Chris,
Not much of the framework will work. Not even containment will be
properly supported...
Yodude wrote:
> Hi Ed,
> The JPA implementation is fixed, can't switch to EclipseLink at this
> point. The objects are not deserialized, so that is not a problem.
> Thanks, chris
>
> Ed Merks wrote:
>> Chris,
>>
>> Array lists aren't going to properly support deserialization so
>> that's likely a dead end path. Perhaps you'd be better off using
>> Teneo's integration with EclipseLink's JPA support.
>>
>>
>> Yodude wrote:
>>> Hi Ed,
>>> Internally, in the Impl, "Suppress EMF Types" generates an EList,
>>> although the interface is now "List<T> getThings()". Is there a way
>>> to generate an ArrayList for that feature instead? If not, then I
>>> will hand-code an ArrayList to mirror the EList. OpenJPA wraps these
>>> features in a proxy and expects Java collection types, apparently.
>>> Thanks, chris
>>>
>>> Ed Merks wrote:
>>>> Chris,
>>>>
>>>> Try Suppress EMF Types in the GenModel's Model Features properties.
>>>>
>>>>
>>>> Yodude wrote:
>>>>> Hi,
>>>>> In order to work with another framework, OpenJPA, I need an EMF
>>>>> feature that is a java.util.List instead of an EList.
>>>>>
>>>>> The model is specified in XML Schema. How do I tell the generator
>>>>> that a given element with maxOccurs="unbounded" is to be
>>>>> implemented as a java.util.List?
>>>>>
>>>>> Thanks,chris
Ed Merks
Professional Support: https://www.macromodeling.com/
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| Re: util.List instead of EList? [message #481738 is a reply to message #481737] |
Mon, 24 August 2009 07:40 |
Thomas Schindl
Messages: 6651
Registered: July 2009 |
Senior Member |
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Hi,
I've done that in the past too when I interfaced with iBatis. Here's
what I've done:
a) Create a setter for the feature setMyList(List)
b) Store the list internally
c) If someone accesses the list with getMyList() the first time:
+ you need to turn of notifications
+ you add all entries of the openjpa proxy list to the feature EList
It works but it's not really nice to work with.
Tom
Ed Merks schrieb:
> Chris,
>
> Not much of the framework will work. Not even containment will be
> properly supported...
>
>
> Yodude wrote:
>> Hi Ed,
>> The JPA implementation is fixed, can't switch to EclipseLink at this
>> point. The objects are not deserialized, so that is not a problem.
>> Thanks, chris
>>
>> Ed Merks wrote:
>>> Chris,
>>>
>>> Array lists aren't going to properly support deserialization so
>>> that's likely a dead end path. Perhaps you'd be better off using
>>> Teneo's integration with EclipseLink's JPA support.
>>>
>>>
>>> Yodude wrote:
>>>> Hi Ed,
>>>> Internally, in the Impl, "Suppress EMF Types" generates an EList,
>>>> although the interface is now "List<T> getThings()". Is there a way
>>>> to generate an ArrayList for that feature instead? If not, then I
>>>> will hand-code an ArrayList to mirror the EList. OpenJPA wraps these
>>>> features in a proxy and expects Java collection types, apparently.
>>>> Thanks, chris
>>>>
>>>> Ed Merks wrote:
>>>>> Chris,
>>>>>
>>>>> Try Suppress EMF Types in the GenModel's Model Features properties.
>>>>>
>>>>>
>>>>> Yodude wrote:
>>>>>> Hi,
>>>>>> In order to work with another framework, OpenJPA, I need an EMF
>>>>>> feature that is a java.util.List instead of an EList.
>>>>>>
>>>>>> The model is specified in XML Schema. How do I tell the generator
>>>>>> that a given element with maxOccurs="unbounded" is to be
>>>>>> implemented as a java.util.List?
>>>>>>
>>>>>> Thanks,chris
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