Use persistence or Util in Service Layer?

[Anil KC, módosítva 10 év-val korábban]

I have a Entity name Sample and finder method getSampleById. Now i am little confused which method to user in Service Layer(SampleLocalServiceImpl) between persistence and Util. What is the difference between samplePersistence.getSampleById and SampleUtil.getSampleById? I got some weird results while using SampleUtil.getSampleById. Even though the data is updated using SampleUtil.getSampleById retrieves old object. After i clear the cache it then returns the updated object. Can anyone make me clear?

[David H Nebinger, módosítva 10 év-val korábban]

In the impl layer, you never use the Util objects.

The Util objects are only for external uses of the service layer.