Re: [dali-dev] FW: Get all entities from the project

[Tom Mutdosch <tommut@xxxxxxxxx>]

Hi Karen,

I am interested in this as well using the latest Dali 1.0 WTP 
milestone.  Say after the entities have been generated, I have some 
tooling that later wants to update an entity (say to set an optimistic 
concurrency version field). 

How would I do this in the latest Dali code (until an API is 
established)?  I don't see the PersistenceProject that you mentioned. 

I think ideally it would be nice to call an API to get all 
PersistenceUnits for the project, and then get all Entities from each 
PersistenceUnit.  Then it would be nice if I could easily modify an 
Entity model representation and have it update the actual Java file.  
For example, I get an EnityObject from the Dali APIs and then I can do 
EntityObject.setVersion( "versionFieldName") or something like that and 
it would add the appropriate @version annotation to the specified 
field.  I realize that's probably asking a lot (I did open a feature 
request to capture this), so for now I think it's probably okay if I can 
just get a list of the Entities somehow; then I can just use the JDT 
api's to modify the base Java file (which is ugly, but should work). 

Thanks
Tom


Karen Moore wrote:
> Hi Dimiter,
>
> We don't currently have api for this in 0.5 and I would recommend 
> opening an enhancement request against 1.0 to include this as api.  In 
> 0.5 your best bet is to call PersistenceProject.persistenceFiles().  
> This will return you an iterator of PersistenceFile objects. Then 
> PersistenceFile.getPersistentTypes will return the Collection of 
> PersistentTypes.  Each PersistentType has a TypeMapping on it which can 
> be Entity, MappedSuperclass, Embeddable.  You can use 
> PersistnentType.getTypeMappingKey() and compare it to 
> Entity.Key.INSTANCE to check if it is an Entity. 
>
> This has changed some in 1.0 and we need to have api for it (even if it 
> is provisional or internal for now).  I hope this helps you.
>
> Karen