private TagValueCollection GenerateTagValueCollection(TagValueCollection tagValueFilterCollection)
{
TagValueCollection localTagValueCollection = new TagValueCollection();
// Check if the comparator can be used with a Universal Match on the Value of the Tag
// - that is zero-length Value.
if (this.UseComparator(tagValueFilterCollection, true) == true)
{
foreach(BaseTagValue baseTagValue in tagValueFilterCollection)
{
Hl7TagValue hl7TagValue = null;
if (baseTagValue is Hl7TagValue)
{
hl7TagValue = (Hl7TagValue)baseTagValue;
}
else if (baseTagValue is DicomTagValue)
{
DicomTagValue dicomTagValue = (DicomTagValue)baseTagValue;
hl7TagValue = new Hl7TagValue(DicomHl7TagMapTemplate.DicomToHl7Tag(dicomTagValue.Tag), dicomTagValue.Value);
}
// If the Value is empty (Universal Match) then try to get the actual
// value from the comparator so that is actual value will be used against
// other comparators.
if (hl7TagValue.Tag != null)
{
if (hl7TagValue.Value == System.String.Empty)
{
// try to get a value for this Tag from this comparator
System.String lValue = getValue(hl7TagValue.Tag);
// Add a new Tag Value - with Value coming from this comparator
// to the local filter.
Hl7TagValue lHl7TagValue = new Hl7TagValue(hl7TagValue.Tag, lValue);
localTagValueCollection.Add(lHl7TagValue);
}
else
{
// Just add the given Tag Value pair to the local filter
localTagValueCollection.Add(hl7TagValue);
}
}
}
}
// Return the local filter
return localTagValueCollection;
}
public bool UseComparator(TagValueCollection tagValueFilterCollection, bool universalMatchAllowed)
{
int filterCounter = 0;
// Check if the filter values match those in the template
foreach(BaseTagValue baseTagValue in tagValueFilterCollection)
{
Hl7TagValue hl7TagValue = null;
if (baseTagValue is Hl7TagValue)
{
hl7TagValue = (Hl7TagValue)baseTagValue;
}
else if (baseTagValue is DicomTagValue)
{
DicomTagValue dicomTagValue = (DicomTagValue)baseTagValue;
hl7TagValue = new Hl7TagValue(DicomHl7TagMapTemplate.DicomToHl7Tag(dicomTagValue.Tag), dicomTagValue.Value);
}
if (hl7TagValue.Tag != null)
{
foreach (Hl7ComparisonTag thisComparisonTag in this.Template.ComparisonTags)
{
// Tags are the same
if (thisComparisonTag.Tag == hl7TagValue.Tag)
{
if (universalMatchAllowed == true)
{
// When universal matching either a zero-length or exact match are OK
if ((hl7TagValue.Value == System.String.Empty) ||
(thisComparisonTag.DataFormat.ToHl7Format() == hl7TagValue.Value))
{
filterCounter++;
}
}
else if ((universalMatchAllowed == false) &&
(thisComparisonTag.DataFormat.ToHl7Format() == hl7TagValue.Value))
{
// Not universal matching so only an exact match is OK
filterCounter++;
}
break;
}
}
}
}
bool useThisComparator = (tagValueFilterCollection.Count == filterCounter) ? true : false;
return useThisComparator;
}