/// <summary>
/// Run the specified projection and return the results to the caller function
/// </summary>
private static async Task <ProjectionResultsRecord <object> > RunProjection(ProjectionRequest request,
ILogger log)
{
if (null != request)
{
if (!IsProjectionRequestValid(request))
{
#region Logging
if (null != log)
{
log.LogError($"Invalid projection request {request}");
}
#endregion
return(new ProjectionResultsRecord <object>()
{
Error = true,
StatusMessage = $"Invalid projection request {request}",
DomainName = request.DomainName,
AggregateTypeName = request.AggregateTypeName,
EntityUniqueIdentifier = request.AggregateInstanceUniqueIdentifier,
CurrentAsOfDate = request.AsOfDate.GetValueOrDefault(DateTime.UtcNow),
CorrelationIdentifier = request.CorrelationIdentifier,
ParentRequestName = request.ParentRequestName,
Result = null
});
}
Projection projectionEvents = new Projection(request.DomainName,
request.AggregateTypeName,
request.AggregateInstanceUniqueIdentifier,
request.ProjectionName);
if (null != projectionEvents)
{
CQRSAzure.EventSourcing.ProjectionBaseUntyped projectionToRun = null;
// Get an instance of the projection we want to run....
projectionToRun = Projection.CreateProjectionInstance(request.ProjectionName);
if (null != projectionToRun)
{
IProjectionResponse projectionResponse = await projectionEvents.ProcessAsync(projectionToRun);
if (null != projectionResponse)
{
// make a response object
IEnumerable <object> projectionResultObjects = Projection.GetProjectionResults(projectionToRun.CurrentValues);
object results = null;
if (null != projectionResultObjects)
{
if (projectionResultObjects.Count() == 1)
{
results = projectionResultObjects.FirstOrDefault();
}
else
{
results = projectionResultObjects;
}
}
return(new ProjectionResultsRecord <object>()
{
Error = false,
StatusMessage = $"Successfully returned projection request details for {request}",
DomainName = request.DomainName,
AggregateTypeName = request.AggregateTypeName,
EntityUniqueIdentifier = request.AggregateInstanceUniqueIdentifier,
CurrentAsOfDate = projectionResponse.AsOfDate.GetValueOrDefault(DateTime.UtcNow),
CorrelationIdentifier = request.CorrelationIdentifier,
ParentRequestName = request.ParentRequestName,
Result = results
});
}
else
{
#region Logging
if (null != log)
{
log.LogWarning($"Unable to read projection request details from {request } ");
}
#endregion
return(new ProjectionResultsRecord <object>()
{
Error = true,
StatusMessage = $"Unable to read projection request details from {request }",
DomainName = request.DomainName,
AggregateTypeName = request.AggregateTypeName,
EntityUniqueIdentifier = request.AggregateInstanceUniqueIdentifier,
CurrentAsOfDate = request.AsOfDate.GetValueOrDefault(DateTime.UtcNow),
CorrelationIdentifier = request.CorrelationIdentifier,
ParentRequestName = request.ParentRequestName,
Result = null
});
}
}
else
{
#region Logging
if (null != log)
{
log.LogError($"Unable to create projection instance details {request.ProjectionName } ");
}
#endregion
return(new ProjectionResultsRecord <object>()
{
Error = true,
StatusMessage = $"Unable to create projection instance details {request.ProjectionName }",
DomainName = request.DomainName,
AggregateTypeName = request.AggregateTypeName,
EntityUniqueIdentifier = request.AggregateInstanceUniqueIdentifier,
CurrentAsOfDate = request.AsOfDate.GetValueOrDefault(DateTime.UtcNow),
CorrelationIdentifier = request.CorrelationIdentifier,
ParentRequestName = request.ParentRequestName,
Result = null
});
}
}
}
else
{
#region Logging
if (null != log)
{
log.LogWarning($"Unable to read projection request details from {request } ");
}
#endregion
}
// No results
return(new ProjectionResultsRecord <object>()
{
Error = true,
StatusMessage = $"No results found for {request}",
DomainName = request.DomainName,
AggregateTypeName = request.AggregateTypeName,
EntityUniqueIdentifier = request.AggregateInstanceUniqueIdentifier,
CurrentAsOfDate = request.AsOfDate.GetValueOrDefault(DateTime.UtcNow),
CorrelationIdentifier = request.CorrelationIdentifier,
ParentRequestName = request.ParentRequestName,
Result = null
});
}
public void CreateProjectionInstance_Underscored_Test()
{
var testProjection = Projection.CreateProjectionInstance("League_Summary_Information");
Assert.IsNotNull(testProjection);
}
