How about writing a custom marshaller for the Party class?
The person and business objects have normal jibx maps. The party class
marshaller looks at the type and forwards it into the appropriate
marshaller.
Not sure about the exact implementation details
regards
Varghese
[EMAIL PROTECTED] wrote:
>
> I like your idea of creating the abstract class for a generic party
> type, but I still have the issue of whether to map to a Person or a
> Business depending on the value of an attribute in my input xml. For
> example, the input xml is as follows
>
> <ns:Party xsi:type='person'> <!-- Maps to Person Object -->
> <ns:Id>1111111111111111111</ns:Id>
> <ns:CommonType>P</ns:CommonType>
> <ns:BirthDate>P</ns:BirthDate>
> </ns:Party>
>
> or
>
> <ns:Party xsi:type='business'> <!-- Maps to Business Object -->
> <ns:Id>22222222222222222</ns:Id>
> <ns:CommonType>O</ns:CommonType>
> <ns:BusinessType>1</ns:BusinessType>
> </ns:Party>
>
>
> As you can see, the <Party> tag can map to both Person or Business
> depending on the value of the xsi:type attribute and never both in the
> same request. So I need to do some sort of dynamic binding that
> allows me to map to either Person or Business base of the xsi:type
> value. Do you know of a way to map this sort of input.
>
> Barry
>
>
>
>
> *Varghese C V <[EMAIL PROTECTED]>*
>
> /Sent by:// //[EMAIL PROTECTED]/
>
>
>
>
> *06/26/2007 06:07 AM*
> Please respond to JiBX users <jibx-users@lists.sourceforge.net>
> From
> *Varghese C V <[EMAIL PROTECTED]>*
> To
> JiBX users <jibx-users@lists.sourceforge.net>
> cc
>
> Subject
> Re: [jibx-users] JiBX dynamic binding question
>
>
>
>
>
>
>
>
>
> I was thinking of a concrete Party object with a reference to the base
> class for the Person and Business object.
>
> abstract class PartyReference{
> }
>
> class Party{
> PartyReference reference;
> }
>
> class Person extends PartyReference{}
> class Business extends PartyReference{}
>
> The mappings
> <mapping class="PartyReference" abstract="true">
> </mapping>
> <mapping class="Person" extends="PartyReference">
> <structure map-as="PartyReference"/>
> </mapping>
> <mapping class="Party">
> <structure field="reference"/>
> </mapping>
>
> This way the bindings are simpler. What do you think?
>
> regards
> Varghese
> _
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> wrote:
>
> Thank you for the quick response. In the examples that I have found
> when using abstract mappings, you know ahead of time that there are
> different types of data to be mapped to one abstract class. In my
> case, if I choose the abstract mapping approach, I will still need to
> split the abstract Party object out into either a Person or a Business
> element once I marshal back into xml for my application. I need to do
> this because my input xml is defined in a structure that does not
> conform to the backend application's schema. So on input, I have
> either a Person or Business which gets mapped to one abstract Party
> class, but the Party class will need to be mapped to either a Person
> or Business when I marshal the xml into a form understood by my
> receiving application.
>
> Is there a way to do this?
>
> Thanks!
>
> Barry
>
>
>
> *Varghese C V **_<[EMAIL PROTECTED]>_*
> <mailto:[EMAIL PROTECTED]>
> /
> Sent by:// //[EMAIL PROTECTED]/
> <mailto:[EMAIL PROTECTED]>
>
>
>
> *
> 06/25/2007 03:19 AM*
> Please respond to JiBX users _<jibx-users@lists.sourceforge.net>_
> <mailto:jibx-users@lists.sourceforge.net>
> From
> *Varghese C V **_<[EMAIL PROTECTED]>_*
> <mailto:[EMAIL PROTECTED]>
> To
> JiBX users _<jibx-users@lists.sourceforge.net>_
> <mailto:jibx-users@lists.sourceforge.net>
> cc
>
> Subject
> Re: [jibx-users] JiBX dynamic binding question
>
>
>
>
>
>
>
>
>
>
>
>
>
> Since the Party object can contain a Person or a Business object,
> wouldn't it be better modeled if you have a abstract base class for
> these objects?
> Then Party object would contain a reference to this base type. In Jibx,
> you would then have a abstract mapping for the base type, mappings for
> each inherited type and a mapping for the Party type. This approach
> assumes that you have the liberty to define the input xml and that you
> can change your model classes.
>
> Varghese
> _
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> wrote:
> >
> > Hello All,
> >
> > I have a question about unmarshalling to specific objects based off an
> > attribute value in the input xml. At any given time, my input xml
> > tag will remain the same. However, the *xsi:type* attribute could be
> > different. I need to map/bind to a specific object based off the
> > value in the attribute. I have not found anywhere in the
> > documentation where I can bind to a specific object dynamically, but I
> > have been trying to get this to work using method hooks.
> > .
> > For example, my input xml will contain one of the following entries....
> >
> > <ns:Party xsi:type='person'>
> > <ns:Id>1111111111111111111</ns:Id>
> > <ns:CommonType>P</ns:CommonType>
> > <ns:BirthDate>P</ns:BirthDate>
> > </ns:Party>
> >
> > or
> >
> > <ns:Party xsi:type='business'>
> > <ns:Id>22222222222222222</ns:Id>
> > <ns:CommonType>O</ns:CommonType>
> > <ns:BusinessType>1</ns:BusinessType>
> > </ns:Party>
> >
> >
> > My binding definition contains the following....
> >
> > <mapping name="Party " class="commonparty.Party" post-set="postset"
> > ordered="false">
> > <namespace prefix="obj" uri=_"http://input.common.com"_
> <http://input.common.com/>
> > default="elements"/>
> > <namespace prefix="xsi"
> > uri=_"http://www.w3.org/2001/XMLSchema-instance"_
> <http://www.w3.org/2001/XMLSchema-instance> default="attributes"/>
> > <value name="type" field ="type" style="attribute"
> > usage="optional" />
> > <value name="Id" field="partyId" usage="optional"/>
> > <value name="CommonType" field="commonType" usage="optional"/>
> > </mapping>
> >
> >
> > My java class structure declares that a Party object is composed of a
> > Person and Business object. However, at any give time the Party
> > object would contain a reference to either Person or Business.
> >
> > public class Party {
> > public String type;
> > public Person person;
> > public Business business;
> >
> > public void postset(IUnmarshallingContext ctx) {
> > if ( type.equals("Person") ) {
> > //Copy fields from Party to new instance of
> > Person
> > //Replace Party object on the stack with Person
> >
> > } else {
> > //Copy fields from Party to new instance of
> > Business
> > //Replace Party object on the stack with of
> > }
> > }
> > .
> > .
> > .
> > }
> >
> > public class Person {
> > public String birthDate;
> > .
> > .
> > .
> > }
> >
> > public class Business{
> > public String businessType;
> > .
> > .
> > .
> > }
> >
> >
> > As you can see, I am always mapping the "Party" tag to a Party object.
> > The party object contains a post-set method that accepts the
> > IUnmarshallingContext signature. In the postset method, I am
> > evaluating the xsi:type. If the type is "Person", then I want to pop
> > the current Party object from the stack and push a new instance of a
> > Person object for JiBX to unmarshall. After coming to this idea, I
> > realized that I do not have a specific mapping for a Person object. I
> > definitly need a Person and a Business object because they contain
> > different fields ( as listed in my input example above ).
> >
> > Does anyone know if there is a binding syntax that will allow me to
> > handle this work in the binding.xml? If not, is there another
> > solution without modifying JiBX?
> >
> > Thanks for the help!
> >
> > Barry
> >
> > ------------------------------------------------------------------------
> >
> >
> -------------------------------------------------------------------------
> > This SF.net email is sponsored by DB2 Express
> > Download DB2 Express C - the FREE version of DB2 express and take
> > control of your XML. No limits. Just data. Click to get it now.
> > _http://sourceforge.net/powerbar/db2/_
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > jibx-users mailing list
> > [EMAIL PROTECTED]
> <mailto:jibx-users@lists.sourceforge.net>
> > _https://lists.sourceforge.net/lists/listinfo/jibx-users_
> >
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now._
> __http://sourceforge.net/powerbar/db2/_
> _______________________________________________
> jibx-users mailing list_
> [EMAIL PROTECTED]
> <mailto:jibx-users@lists.sourceforge.net>_
> __https://lists.sourceforge.net/lists/listinfo/jibx-users_
>
>
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> _http://sourceforge.net/powerbar/db2/_
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> jibx-users mailing list
> [EMAIL PROTECTED]
> <mailto:jibx-users@lists.sourceforge.net>
> _https://lists.sourceforge.net/lists/listinfo/jibx-users_
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/_______________________________________________
> jibx-users mailing list
> jibx-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/jibx-users
>
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> ------------------------------------------------------------------------
>
> _______________________________________________
> jibx-users mailing list
> jibx-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/jibx-users
>
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
jibx-users mailing list
jibx-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/jibx-users
