/// <summary>
/// Evaluates the request and returns a response.
/// </summary>
/// <param name="input">The input request.</param>
/// <returns>The result of evaluating the given input.</returns>
public evaluateResponse Evaluate(evaluate input)
{
var inputScopingEntityId = input.interactionId.scopingEntityId;
if (input.interactionId.scopingEntityId != "SAMPLE-CLIENT")
{
throw
new DSSExceptionWrapper
(
new UnrecognizedScopingEntityException
{
errorMessage = new List <string> {
"Unknown client"
},
scopingEntityId = input.interactionId.scopingEntityId
}
);
}
if (input.evaluationRequest.dataRequirementItemData.Count > 1)
{
throw new ArgumentOutOfRangeException("Example service implementation can only process requests with a single data requirement item container.");
}
var dri = input.evaluationRequest.dataRequirementItemData[0];
if (!SemanticSignifiers.AreEqual(dri.data.informationModelSSId, SemanticSignifiers.CDSInputId))
{
throw
new DSSExceptionWrapper
(
new UnrecognizedScopedEntityException
{
errorMessage = new List <string> {
"Unknown semantic signifier. Semantic signifier must be 'org.hl7.cds', 'cdss:r1', '1.0'"
},
entityType = EntityType.SEMANTIC_SIGNIFIER,
entityId = dri.data.informationModelSSId
}
);
}
var payload = Packager.DecodeRequestPayload(dri.data.base64EncodedPayload);
EngineResponse engineResponse = null;
try
{
// Pass payload to rule engine for evaluation here...
// NOTE: This could be done a per KM basis as well, depends on whether the engine
// is aggregating results, or keeping results separate.
engineResponse = GetSampleEngineResponse(payload);
}
catch (CDSExecutionMessageWrapper m)
{
// Catch any execution exceptions and convert them to DSS exceptions
throw new DSSExceptionWrapper(m.ExecutionMessage.ToDSSException());
}
// Package the engine's response in a DSS evaluate response.
return
(new evaluateResponse
{
requestId = input.interactionId,
responseId = new InteractionIdentifier {
scopingEntityId = "org.hl7.cds", interactionId = Guid.NewGuid().ToString("N"), submissionTime = DateTime.Now
},
evaluationResponse =
new EvaluationResponse
{
finalKMEvaluationResponse =
new List <FinalKMEvaluationResponse>
{
new FinalKMEvaluationResponse
{
kmEvaluationResultData =
new List <KMEvaluationResultData>
{
new KMEvaluationResultData
{
evaluationResultId = new ItemIdentifier {
itemId = Guid.NewGuid().ToString("N")
},
data =
new SemanticPayload
{
informationModelSSId = SemanticSignifiers.CDSActionGroupResponseId,
base64EncodedPayload = Packager.EncodeActionGroupResponsePayload((CDSActionGroupResponse)engineResponse.Response)
}
}
},
kmId = new EntityIdentifier {
businessId = Guid.NewGuid().ToString("N"), scopingEntityId = inputScopingEntityId, version = "1"
},
warning =
(
from m in engineResponse.Messages
select
new Warning
{
value =
new SemanticPayload
{
informationModelSSId = SemanticSignifiers.CDSExecutionMessageId,
base64EncodedPayload = Packager.EncodeExecutionMessagePayload(m)
}
}
).ToList()
}
}
}
});
}