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From "Jurgen Doll" <>
Subject Re: Best Practice for blobs
Date Thu, 03 Oct 2019 07:30:35 GMT
Hi Lon

Not sure if this is best practice but I created two Cayenne object entities 
where the first excludes the blob and the second only has the blob.

Then I either:

1. Added a relationship attribute in the first pointing to the second, based 
on a 1:1 relationship in the DbEntity.

2. Or I manually added a method to the first, to fetch the blob with 
something like:

    Cayenne.objectForPK( context, ImageBlob.class, 
Cayenne.longPKForObject( this ) );


-----Original Message----- 
From: Lon Varscsak
Sent: Thursday, October 3, 2019 1:55 AM
To: Apache Cayenne
Subject: Best Practice for blobs

Hey all,

I have a blob column in an entity, but I don't want to always actually load
the blob, just on demand (but I still want to be able to see the other
attributes in the entity).  Any best practice here to have the blob be lazy?



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