protected virtual IEnumerable <SegmentError> ValidateContainerAgainstSpec(ContainerInformation container)
{
var errors = new List <SegmentError>();
foreach (var segmentSpec in container.Spec.SegmentSpecifications.Where(ss => ss.Usage == UsageEnum.Required))
{
if (!container.Segments.Exists(s => s.SegmentId == segmentSpec.SegmentId))
{
errors.Add(CreateSegmentError(new SegmentInformation {
SegmentId = segmentSpec.SegmentId,
LoopId = container.Spec.LoopId,
SegmentPosition = container.Segments.Count > 0 ? container.Segments.First().SegmentPosition : 0
},
"3")); // Required segment is missing
}
if (segmentSpec.Repeat > 0 && container.Segments.Count(s => s.SegmentId == segmentSpec.SegmentId) > segmentSpec.Repeat)
{
errors.Add(CreateSegmentError(container.Segments.Last(s => s.SegmentId == segmentSpec.SegmentId),
"5")); // Segment Exceeds Maximum Use
}
}
foreach (var loopSpec in container.Spec.LoopSpecifications.Where(ls => ls.Usage == UsageEnum.Required))
{
if (!container.Containers.Exists(c => c.Spec.LoopId == loopSpec.LoopId))
{
errors.Add(CreateSegmentError(new SegmentInformation
{
SegmentId = loopSpec.StartingSegment.SegmentId,
LoopId = container.Spec.LoopId,
SegmentPosition = container.Segments.Count > 0 ? container.Segments.Last().SegmentPosition : 0
}, "I7")); // Implementation Loop Occurs Under Minimum Times
}
if (loopSpec.LoopRepeat > 0 && container.Containers.Count(c => c.Spec.LoopId == loopSpec.LoopId) > loopSpec.LoopRepeat)
{
errors.Add(CreateSegmentError(container.Containers.Last(c => c.Spec.LoopId == loopSpec.LoopId).Segments.First(),
"4")); // Loop Occurs Over Maximum Times
}
}
foreach (var childContainer in container.Containers)
{
errors.AddRange(ValidateContainerAgainstSpec(childContainer));
}
return(errors);
}
protected virtual TransactionSetResponse AcknowledgeTransaction(X12StreamReader reader, string functionalCode, string versionIdentifierCode, string transaction)
{
string[] stElements = reader.SplitSegment(transaction);
var response = new TransactionSetResponse
{
TransactionSetIdentifierCode = stElements[1],
TransactionSetControlNumber = stElements[2]
};
if (stElements.Length >= 4)
{
response.ImplementationConventionReference = stElements[3];
}
var transactionSpec = _specFinder.FindTransactionSpec(functionalCode, versionIdentifierCode, response.TransactionSetIdentifierCode);
if (transactionSpec == null)
{
response.SyntaxErrorCodes.Add("1"); // Transaction Set Not Supported
response.AcknowledgmentCode = AcknowledgmentCodeEnum.R_Rejected;
return(response);
}
#region Validate against transaction specification
Stack <ContainerInformation> containers = new Stack <ContainerInformation>();
var transactionContainer = new ContainerInformation {
Spec = transactionSpec
};
containers.Push(transactionContainer);
List <SegmentInformation> segmentInfos = new List <SegmentInformation>();
string[] segments = transaction.Split(new char[] { reader.Delimiters.SegmentTerminator }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < segments.Length; i++)
{
string[] elements = segments[i].Split(reader.Delimiters.ElementSeparator);
var segmentInfo = new SegmentInformation {
SegmentId = elements[0], SegmentPosition = i + 1, Elements = elements
};
segmentInfo.Spec = _specFinder.FindSegmentSpec(versionIdentifierCode, segmentInfo.SegmentId);
segmentInfos.Add(segmentInfo);
ContainerInformation currentContainer = containers.Peek();
switch (segmentInfo.SegmentId)
{
case "ST":
case "SE":
segmentInfo.LoopId = "";
transactionContainer.Segments.Add(segmentInfo);
break;
case "HL":
string hlNumber = segmentInfo.Elements[1];
string hlParentNumber = segmentInfo.Elements[2];
string hlLevelCode = segmentInfo.Elements[3];
var hlSpec = transactionSpec.HierarchicalLoopSpecifications.FirstOrDefault(hls => hls.LevelCode == hlLevelCode);
if (hlSpec != null)
{
while (!(containers.Peek().Spec is TransactionSpecification))
{
if (containers.Peek().HLoopNumber == hlParentNumber)
{
break;
}
containers.Pop();
}
segmentInfo.LoopId = hlSpec.LoopId;
var hlContainer = new ContainerInformation {
Spec = hlSpec, HLoopNumber = hlNumber
};
hlContainer.Segments.Add(segmentInfo);
containers.Peek().Containers.Add(hlContainer);
containers.Push(hlContainer);
}
else
{
response.SegmentErrors.Add(CreateDataElementError(segmentInfo, 3, "I6", hlLevelCode)); //Code Value Not Used in Implementation
response.AcknowledgmentCode = AcknowledgmentCodeEnum.X_Rejected_ContentCouldNotBeAnalyzed;
return(response); // end validation if HL cannot be recognized since hl spec will not be available
}
break;
default:
bool matchFound = false;
do
{
var matchingLoopSpecs = currentContainer.Spec.LoopSpecifications.Where(ls => ls.StartingSegment.SegmentId == segmentInfo.SegmentId).ToList();
if (matchingLoopSpecs.Count > 0)
{
IContainerSpecification matchingLoopSpec = null;
if (matchingLoopSpecs.Count == 1)
{
matchingLoopSpec = matchingLoopSpecs.First();
}
else
{
string entityCode = elements[1];
matchingLoopSpec = matchingLoopSpecs.FirstOrDefault(ls => ls.StartingSegment.EntityIdentifiers.Exists(ei => ei.Code == entityCode));
}
if (matchingLoopSpec != null)
{
segmentInfo.LoopId = matchingLoopSpec.LoopId;
var loopContainer = new ContainerInformation {
Spec = matchingLoopSpec
};
loopContainer.Segments.Add(segmentInfo);
containers.Peek().Containers.Add(loopContainer);
containers.Push(loopContainer);
matchFound = true;
}
else
{
response.SegmentErrors.Add(CreateSegmentError(segmentInfo, "6")); //Segment Not in Defined Transaction Set
response.AcknowledgmentCode = AcknowledgmentCodeEnum.X_Rejected_ContentCouldNotBeAnalyzed;
return(response);
}
}
else if (currentContainer.Spec.SegmentSpecifications.Exists(ss => ss.SegmentId == segmentInfo.SegmentId))
{
segmentInfo.LoopId = currentContainer.Spec.LoopId;
currentContainer.Segments.Add(segmentInfo);
matchFound = true;
}
else
{
if (currentContainer.Spec is TransactionSpecification)
{
response.SegmentErrors.Add(CreateSegmentError(segmentInfo, "2")); // Unexpected segment
response.AcknowledgmentCode = AcknowledgmentCodeEnum.X_Rejected_ContentCouldNotBeAnalyzed;
return(response); // end validation if unrecognized segment encountered (cannot guarantee we are pointing at correct container)
}
else
{
containers.Pop();
currentContainer = containers.Peek();
}
}
} while (!matchFound);
break;
}
response.SegmentErrors.AddRange(ValidateSegmentAgainstSpec(segmentInfo));
}
response.SegmentErrors.AddRange(ValidateContainerAgainstSpec(transactionContainer));
#endregion
#region Validate transaction trailer
var trailerSegment = segmentInfos.FirstOrDefault(si => si.SegmentId == "SE");
if (trailerSegment == null)
{
response.SyntaxErrorCodes.Add("2"); //Transaction Set Trailer Missing
}
else
{
if (trailerSegment.Elements.Length <= 2 || trailerSegment.Elements[2] != response.TransactionSetControlNumber)
{
response.SyntaxErrorCodes.Add("3"); // Transaction Set Control Number in Header and Trailer Do Not Match
}
if (trailerSegment.Elements.Length >= 2)
{
int segmentCount;
int.TryParse(trailerSegment.Elements[1], out segmentCount);
if (segmentCount != segmentInfos.Count)
{
response.SyntaxErrorCodes.Add("4"); // Number of Included Segments Does Not Match Actual Count
}
}
else
{
response.SyntaxErrorCodes.Add("4"); // Number of Included Segments Does Not Match Actual Count
}
}
#endregion
if (response.SegmentErrors.Count > 0 || response.SyntaxErrorCodes.Count > 0)
{
if (response.SegmentErrors.Count > 0)
{
response.SyntaxErrorCodes.Add("5"); //One or More Segments in Error
}
if (response.AcknowledgmentCode == AcknowledgmentCodeEnum.A_Accepted)
{
response.AcknowledgmentCode = AcknowledgmentCodeEnum.E_Accepted_ButErrorsWereNoted;
}
}
return(response);
}
