# Package com.gisgraphy.service

- Interface Summary
  Interface | Description
  --- | ---
  GenericManager<T,PK extends Serializable> | Generic Manager that talks to GenericDao to CRUD POJOs.
  IInternationalisationService | allow L10N and I18N
  IStatsUsageService | Manage The `StatsUsage`
  LookupManager | Business Service Interface to talk to persistence layer and retrieve values for drop-down choice lists.
  RoleManager | Business Service Interface to handle communication between web and persistence layer.
  UniversalManager | Business Facade interface.
  UserManager | Business Service Interface to handle communication between web and persistence layer.
  UserService | Web Service interface so hierarchy of Universal and Generic Managers isn't carried through.

- Class Summary
  Class | Description
  --- | ---
  MailEngine | Class for sending e-mail messages based on Velocity templates or with attachments.
  UserSecurityAdvice | This advice is responsible for enforcing security and only allowing administrators to modify users.

- Exception Summary
  Exception | Description
  --- | ---
  UserExistsException | An exception that is thrown by classes wanting to trap unique constraint violations.

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