protected override void Complete(IConventionContext context)
{
if (Definition.Provider is null)
{
throw ProjectionConvention_NoProviderFound(GetType(), Definition.Scope);
}
if (Definition.ProviderInstance is null)
{
_provider =
context.Services.GetOrCreateService <IProjectionProvider>(Definition.Provider) ??
throw ProjectionConvention_NoProviderFound(GetType(), Definition.Scope);
}
else
{
_provider = Definition.ProviderInstance;
}
if (_provider is IProjectionProviderConvention init)
{
IReadOnlyList <IProjectionProviderExtension> extensions =
CollectExtensions(context.Services, Definition);
init.Initialize(context);
MergeExtensions(context, init, extensions);
init.Complete(context);
}
}
public static ISchemaError ProjectionConvention_UnableToCreateFieldHandler(
IProjectionProvider convention,
Type fieldHandler) =>
SchemaErrorBuilder.New()
.SetMessage(
DataResources.FilterProvider_UnableToCreateFieldHandler,
fieldHandler.FullName ?? fieldHandler.Name,
convention.GetType().FullName ?? convention.GetType().Name)
.SetExtension(nameof(convention), convention)
.SetExtension(nameof(fieldHandler), fieldHandler)
.Build();
private void GenerateQueryResult()
{
if (this.description.CountOption == RequestQueryCountOption.ValueOnly)
{
this.description.VerifyProtocolVersion(RequestDescription.Version2Dot0, this.service);
this.description.VerifyRequestVersion(RequestDescription.Version2Dot0, this.service);
this.description.VerifyAndRaiseResponseVersion(RequestDescription.Version2Dot0, this.service);
this.queryExpression = this.queryExpression.QueryableLongCount();
}
else if (this.rootProjectionNode != null)
{
IExpandProvider service = this.service.Provider.GetService <IExpandProvider>();
if (service != null)
{
if (this.IsStandardPaged)
{
throw new DataServiceException(500, System.Data.Services.Strings.DataService_SDP_TopLevelPagedResultWithOldExpandProvider);
}
if (this.rootProjectionNode.ProjectionsSpecified)
{
throw new DataServiceException(500, System.Data.Services.Strings.DataService_Projections_ProjectionsWithOldExpandProvider);
}
if (this.rootProjectionNode.ExpansionOnDerivedTypesSpecified)
{
throw new DataServiceException(500, System.Data.Services.Strings.DataService_DerivedExpansions_OldExpandProvider);
}
this.ProcessOrderBy();
this.ProcessSkipAndTop();
this.queryExpression = Expression.Call(Expression.Constant(service), ApplyExpansionsMethodInfo, this.queryExpression, Expression.Constant(this.rootProjectionNode.ExpandPaths));
this.rootProjectionNode.UseExpandPathsForSerialization = true;
}
else
{
IProjectionProvider projectionProvider = this.service.Provider.ProjectionProvider;
if (projectionProvider == null)
{
projectionProvider = new BasicExpandProvider(this.service.Provider, false, true);
}
this.queryExpression = Expression.Call(null, DataServiceExecutionProviderMethods.ApplyProjectionsMethodInfo, Expression.Constant(projectionProvider, typeof(object)), this.queryExpression, Expression.Constant(this.rootProjectionNode, typeof(object)));
}
}
else if (!string.IsNullOrEmpty(this.service.OperationContext.Host.GetQueryStringItem("$expand")))
{
this.ProjectSkipTokenForNonExpand();
this.ProcessOrderBy();
this.ProcessSkipAndTop();
}
}
protected override void OnComplete(IConventionContext context)
{
if (Definition.Provider is null)
{
throw ProjectionConvention_NoProviderFound(GetType(), Definition.Scope);
}
if (Definition.ProviderInstance is null)
{
_provider =
context.Services.GetOrCreateService <IProjectionProvider>(Definition.Provider) ??
throw ProjectionConvention_NoProviderFound(GetType(), Definition.Scope);
}
else
{
_provider = Definition.ProviderInstance;
}
if (_provider is IProjectionProviderConvention init)
{
init.Initialize(context);
init.OnComplete(context);
}
}
public ProjectionOptimizer(IProjectionProvider provider)
{
_provider = provider;
}
