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From "Jakob Bräuchi" <jbraeu...@gmx.ch>
Subject Re: [1.1 Proposal] Introduce an IdentityFactory
Date Thu, 22 Jan 2004 13:13:42 GMT
+1

jakob

> 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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