February 2013
Intermediate to advanced
656 pages
21h 26m
English
Content preview from Implementing Domain-Driven Design
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Modeling a Service in the Domain
Depending on the purpose of a Domain Service, it can be quite simple to model. You’ll have to decide whether or not your Service should have a Separated Interface [Fowler, P of EAA]. If so, this might be the interface definition:
package com.saasovation.identityaccess.domain.model.identity; public interface AuthenticationService { public UserDescriptor authenticate( TenantId aTenantId, String aUsername, String aPassword); }
The interface is declared in the same Module (9) as the identity-specific Aggregates, such as Tenant, User, and Group. That is done because AuthenticationService is an identity concept, and we currently place all identity-related ...
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