Engine Class

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Overview

The Engine static class is used by the Data Abstract server infrastructure to store link t one of its core objects - the ConnectionManager instance. This class also provides methods used by local data adapters to acquire and release data service instances.

Location

• Assembly: RemObjects.DataAbstract.Server.dll
• Namespace: RemObjects.DataAbstract.Server

Properties

ConnectionManager
Provides access to the previously registered (via theRegisterConnectionManager method) ConnectionManager. This property always returns a non-null object or raises an exception if no ConnectionManager is registered. Prism:   property ConnectionManager: ConnectionManager read C#:   ConnectionManager ConnectionManager { get; } VB:   Property ReadOnly ConnectionManager As ConnectionManager

Class Methods

AcquireLocalService
Instantiates a service named serviceName. This method is used by local data adapters to acquire data services. Service instance is activated using the sessionId arument value as session identifier. Oxygene:   class method AcquireLocalService(sessionId: Guid; serviceName: String): IDataAbstractLocalServiceAccess C#:   static IDataAbstractLocalServiceAccess AcquireLocalService(Guid sessionId, String serviceName) VB:   Shared Function AcquireLocalService(sessionId As Guid, serviceName As String) As IDataAbstractLocalServiceAccess Parameters: sessionId: Session Id serviceName: Servcie name
RegisterConnectionManager
Registers the global Connection Manager. An exception will be raised if another ConnectionManager is already registered. This method is called by default by the ConnectionManager constructor. Oxygene:   class method RegisterConnectionManager(manager: ConnectionManager) C#:   static void RegisterConnectionManager(ConnectionManager manager) VB:   Shared Sub RegisterConnectionManager(manager As ConnectionManager) Parameters: manager: ConnectionManager instance to register as global ConnectionManager
ReleaseLocalService
Deactivates and releases the service instance previously acquired by the AcquireLocalService method. Oxygene:   class method ReleaseLocalService(sessionId: Guid; serviceInstance: IDataAbstractLocalServiceAccess) C#:   static void ReleaseLocalService(Guid sessionId, IDataAbstractLocalServiceAccess serviceInstance) VB:   Shared Sub ReleaseLocalService(sessionId As Guid, serviceInstance As IDataAbstractLocalServiceAccess) Parameters: sessionId: Session Id serviceInstance: Servcie instance
UnRegisterConnectionManager
Tries to unregister the global ConnectionManager. This method returns false if the ConnectionManager instance provided as parameter is not the one registered as global ConnectionManager. In this case the currently registered global ConnectionManager is not unregistered. Oxygene:   class method UnRegisterConnectionManager(manager: ConnectionManager): Boolean C#:   static Boolean UnRegisterConnectionManager(ConnectionManager manager) VB:   Shared Function UnRegisterConnectionManager(manager As ConnectionManager) As Boolean Parameters: manager: ConnectionManager instance to unregister as global ConnectionManager

See Also

• ConnectionManager
• Lists
  • Data Abstract for .NET:   Namespaces — Interfaces — Classes — Enums — Implements
    • RemObjects SDK for .NET:   Namespaces — Interfaces — Classes — Enums — Implements
    • RemObjects Script for .NET:   Namespaces — Classes
  • Data Abstract shared:   Data Types – File Types
  • other editions:
    • Data Abstract for Xcode:   Protocols — Classes — Enums — Implements
    • Data Abstract for Delphi:   Interfaces — Classes — Enums — Aliases — Implements
    • Data Abstract for Java:   Namespaces — Interfaces — Classes — Enums — Implements
    • Data Abstract for JavaScript:   Objects

Product: RemObjects Data Abstract
Available Editions: Data Abstract for .NET, Delphi and Xcode

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