Re: meta data merging

>
> Hi Geert,
>
> For example I have
>
>         Foo.class
>         FooMetaData.class
>
> I'm sending a list of Foo objects but in the resultant serialization
> there is FooMetaData objects aswell:
>
> //
> OK
> [7,4,0,0,3,0,0,2,6,3,0,0,3,0,0,2,5,2,0,0,3,0,0,2,4,1,0,0,3,0,0,2,4,1,
> ["java.util.ArrayList/3821976829"
> ,"headman.client.model.Foo/
> 1687815141","headman.client.model.FooMetaData/
> 3712087070","a","b","c","d"
> ],0,3]
>
> if there were no FooMetaData in the package the result of the
> serialization would be like
>
> //OK[6,4,2,5,3,2,4,2,2,3,1,2,4,1,["java.util.ArrayList/
> 3821976829","headman.client.model.Foo/3741164013"
> ,"a","b","c","d"],0,3]
>
>
> The problem occurs at the client side when client tries to deserialize
> because it doesn't expect a FooMetaData.
>
> as you said adding transient should solve the problem
>
>
>    "Serializable User-defined Classes
>    ..........
>       2. all non-final, non-transient instance fields are themselves
> serializable, and
>    ..........
>
>    The transient keyword is honored, so values in transient fields
> are not exchanged during RPCs. Fields that are declared final are also
> not     exchanged during RPCs, so they should generally be marked
> transient as well." (http://code.google.com/webtoolkit/documentation/
> com
> .google
> .gwt.doc.DeveloperGuide.RemoteProcedureCalls.html#SerializableTypes)
>
> for your refrence:
>
> public class Foo implements IsSerializable{
> public String name;
> public int age;
> public Foo(){}
> public Foo(String name, int age){
> this.name = name;
> this.age = age;
> }
> }
>
> public class _FooMetaData extends
> MetaData<ConstrainedBean, ConstrainedProperty> implements
> IsSerializable {
> }
>
> the serialized list object:
> List l = new ArrayList();
> l.add(new Foo("a",1));
> l.add(new Foo("b",2));
> l.add(new Foo("c",3));
> l.add(new Foo("d",4));
>
> On Jul 29, 10:27 pm, "Geert Bevin" <gbe...@...> wrote:
>> Hi,
>>
>> what errors are you getting. I'll look tomorrow in adding transient  
>> to
>> the meta data synthetic field that is added to the domain classes. In
>> theory that should remove the serialization problems.
>>
>> Best regards,
>>
>> Geert
>>
>>
>>
>> On Tue, Jul 29, 2008 at 3:34 PM, Engin Tekin  
>> <engin.te...@...> wrote:
>>
>>> Hi Geert,
>>
>>> I'm trying to use GWT's RPC (Remote Procedure Call) which serializes
>>> the objects.
>>
>>> with objects that are not merged with meta data it's working ok.
>>
>>> I've been looking "Hessian webservice and Metadata merging" (http://
>>> rifers.org/wiki/display/RIFE/Hessian+webservice+and+Meta+data
>>> +merging)
>>
>>> but I couldn't make a solution like in the "Hessian webservice"  
>>> case.
>>
>>> What I did is:
>>
>>> class Foo extends Validation{...}
>>> Foo foo =....;
>>
>>> I tried to serialize "foo.retrieveValidatedBean()" but the same
>>> problem went on.
>>
>>> actually foo and foo.retrieveValidatedBean() are refrencing to the
>>> same object.
>>
>>> Any workaround possibly?
>>
>>> Thanks a lot
>>
>>> On Jul 29, 8:39 am, Geert Bevin <gbe...@...> wrote:
>>>> Hi,
>>
>>>> it's a choice you have to make for each class. The meta data  
>>>> merging
>>>> happens at class load time. So, when the FooMetaData class is  
>>>> present,
>>>> the merging will happen into Foo. If you don't want this to be the
>>>> case, simply don't create FooMetaData.
>>
>>>> Hope this helps,
>>
>>>> Geert
>>
>>>> On 29 Jul 2008, at 00:54, Engin Tekin wrote:
>>
>>>>> hi Geert,
>>
>>>>> "RIFE supports an automated method to add meta data to POJO  
>>>>> classes
>>>>> without having any additional code nor annotations inside the  
>>>>> POJOs
>>>>> themselves." (http://rifers.org/wiki/display/RIFE/Meta+data+merging 
>>>>> )
>>
>>>>> Can we get the pure POJO object that is not merged with the meta  
>>>>> deta?
>>
>>>>> thanks
>>
>>>> --
>>>> Geert Bevin
>>>> Terracotta -http://www.terracotta.org
>>>> Uwyn "Use what you need" -http://uwyn.com
>>>> RIFE Java application framework -http://rifers.org
>>>> Music and words -http://gbevin.com
>>
>> --
>> Geert Bevin
>> Terracotta -http://www.terracotta.org
>> Uwyn "Use what you need" -http://uwyn.com
>> RIFE Java application framework -http://rifers.org
>> Music and words -http://gbevin.com
> >