The OOB Hybris Model Service provides
a method, to refresh the model. Usually we use this method to refresh the data,
before saving the data in database, using save method.
There might be conditions, where
some other thread or operation would be updating the same model instance. By
doing a refresh, we can be sure of not loosing those changes. This is of more
importance, if we are going through a time consuming transaction like payment.
Also transaction
like, stock update, may happen simultaneously from multiple users, so we should
always refresh the model, before saving it.
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