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From "Antonio Gallardo" <agalla...@agsoftware.dnsalias.com>
Subject Re: [1.1 Proposal] Introduce an IdentityFactory
Date Wed, 21 Jan 2004 03:52:42 GMT
+1

Best Regards,

Antonio Gallardo

Armin Waibel dijo:
> Hi all,
>
> I propose to introduce an IdentityFactory class by a service method in
> PB (think some users made a similar proposal in the past):
>
> PB.serviceIdentityFactory
>
> IdentityFactory will simplify the creation of Identity objects and will
> make find by primary key much easier.
>
> Currently user have to create a Identity object on its own and do
> (assume we use a single PK per class)
>
> Object[] pkValueArray = new Object[]{new Integer(4711)};
> Class topLevelClass = broker.getTopLevelClass(realClass);
> Identity oid = new Identity(realClass, topLevelClass, pkValueArray)
> Object result = broker.getObjectByIdentity(Identity oid)
>
> The creation of the Identity object is a mess!
> With the new service class same example look like
>
> Identity oid = broker.serviceIdentityFactory.buildIdentity(realClass,
> new Integer(4711));
> Object result = broker.getObjectByIdentity(Identity oid)
>
> Any comments?
>
> regards,
> Armin
>
> public interface IdentityFactory
> {
>      Identity buildIdentity(Object obj);
>
>      Identity buildIdentity(ClassDescriptor cld, Object obj);
>
>      Identity buildIdentity(Class realClass, Class topLevelClass,
> String[] pkFieldName, Object[] pkValues);
>
>      Identity buildIdentity(Class realClass, String[] fieldName,
> Object[] pkValues);
>
>      Identity buildIdentity(Class realClass, Object pkValue);
> }


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