119 lines
3.6 KiB
C#
119 lines
3.6 KiB
C#
using System;
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namespace Csla.DataPortalClient
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{
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/// <summary>
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/// Implements a data portal proxy to relay data portal
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/// calls to an application server hosted in COM+.
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/// </summary>
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public abstract class EnterpriseServicesProxy : DataPortalClient.IDataPortalProxy
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{
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/// <summary>
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/// Override this method to return a reference to
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/// the server-side COM+ (ServicedComponent) object
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/// implementing the data portal server functionality.
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/// </summary>
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protected abstract Server.Hosts.EnterpriseServicesPortal GetServerObject();
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/// <summary>
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/// Called by <see cref="DataPortal" /> to create a
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/// new business object.
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/// </summary>
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/// <param name="objectType">Type of business object to create.</param>
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/// <param name="criteria">Criteria object describing business object.</param>
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/// <param name="context">
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/// <see cref="Server.DataPortalContext" /> object passed to the server.
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/// </param>
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public virtual Server.DataPortalResult Create(Type objectType, object criteria, Server.DataPortalContext context)
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{
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Server.Hosts.EnterpriseServicesPortal svc = GetServerObject();
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try
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{
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return svc.Create(objectType, criteria, context);
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}
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finally
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{
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if (svc != null)
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svc.Dispose();
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}
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}
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/// <summary>
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/// Called by <see cref="DataPortal" /> to load an
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/// existing business object.
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/// </summary>
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/// <param name="objectType">Type of business object to retrieve.</param>
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/// <param name="criteria">Criteria object describing business object.</param>
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/// <param name="context">
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/// <see cref="Server.DataPortalContext" /> object passed to the server.
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/// </param>
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public virtual Server.DataPortalResult Fetch(Type objectType, object criteria, Server.DataPortalContext context)
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{
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Server.Hosts.EnterpriseServicesPortal svc = GetServerObject();
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try
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{
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return svc.Fetch(objectType, criteria, context);
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}
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finally
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{
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if (svc != null)
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svc.Dispose();
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}
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}
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/// <summary>
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/// Called by <see cref="DataPortal" /> to update a
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/// business object.
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/// </summary>
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/// <param name="obj">The business object to update.</param>
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/// <param name="context">
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/// <see cref="Server.DataPortalContext" /> object passed to the server.
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/// </param>
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public virtual Server.DataPortalResult Update(object obj, Server.DataPortalContext context)
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{
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Server.Hosts.EnterpriseServicesPortal svc = GetServerObject();
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try
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{
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return svc.Update(obj, context);
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}
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finally
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{
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if (svc != null)
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svc.Dispose();
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}
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}
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/// <summary>
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/// Called by <see cref="DataPortal" /> to delete a
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/// business object.
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/// </summary>
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/// <param name="criteria">Criteria object describing business object.</param>
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/// <param name="context">
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/// <see cref="Server.DataPortalContext" /> object passed to the server.
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/// </param>
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public virtual Server.DataPortalResult Delete(object criteria, Server.DataPortalContext context)
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{
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Server.Hosts.EnterpriseServicesPortal svc = GetServerObject();
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try
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{
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return svc.Delete(criteria, context);
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}
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finally
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{
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if (svc != null)
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svc.Dispose();
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}
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}
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/// <summary>
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/// Get a value indicating whether this proxy will invoke
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/// a remote data portal server, or run the "server-side"
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/// data portal in the caller's process and AppDomain.
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/// </summary>
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public virtual bool IsServerRemote
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{
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get { return true; }
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}
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}
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}
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