Implementing Domain-Driven Design

Hibernate Implementation

There are two primary steps to creating either orientation of a Repository. You need to define a public interface and at least one implementation.

Specifically in the case of a collection-oriented design, in the first step you define an interface that mimics a collection. The second step provides an implementation that addresses the use of the backing primary storage mechanism, such as Hibernate. The interface, like a collection, will often have common methods such as are found in the following example:

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package com.saasovation.collaboration.domain.model.calendar; public interface CalendarEntryRepository  {     public void add(CalendarEntry aCalendarEntry);     public void addAll(             Collection<CalendarEntry> ...