public SequenceElement(DicomTag sequenceTag, Dictionary <DicomTag, object> dataset, SequenceElement parentIfAny = null)
{
SequenceTag = sequenceTag;
Dataset = dataset;
Parent = parentIfAny;
ArraySiblings = new List <SequenceElement>();
}
public SequenceElement[] GetSubset(SequenceElement location)
{
if (location.Dataset.ContainsKey(_tag))
{
return(ToSequenceElementArray((Dictionary <DicomTag, object>[])location.Dataset[_tag], location));
}
return(new SequenceElement[0]);
}
public bool IsMatch(SequenceElement element, DicomTag currentTag)
{
//match is '.' so only care if the current value matches
if (IsCurrentNodeMatch)
{
return(IsMatch(element.Dataset[currentTag]));
}
//match all elements in the current array of the sequence e.g. [2]
var toMatchIn = new List <SequenceElement> {
element
};
foreach (string relativeOperator in _relativeOperators)
{
//[..] - match array siblings
if (relativeOperator == "[..]")
{
toMatchIn = toMatchIn.SelectMany(s => s.ArraySiblings).Distinct().ToList();
}
//.. - match containing parent of the current Sequence (where not null)
if (relativeOperator == "..")
{
toMatchIn = toMatchIn.Select(s => s.Parent).Where(p => p != null).Distinct().ToList();
}
//distinct it
toMatchIn = toMatchIn.Distinct().ToList();
}
List <object> finalObjects = new List <object>();
foreach (var navigation in _navigations)
{
var newSets = new List <SequenceElement>();
if (navigation.IsLast)
{
foreach (SequenceElement sequenceElement in toMatchIn)
{
finalObjects.Add(navigation.GetTags(sequenceElement, null));
}
}
else
{
foreach (SequenceElement sequenceElement in toMatchIn)
{
newSets.AddRange(navigation.GetSubset(sequenceElement));
}
}
toMatchIn = newSets;
}
return(finalObjects.Any(IsMatch));
}
/// <summary>
/// Returns tag (which must be non Sequence tags) value contained in the current sequence (<see cref="SequenceElement"/>). Optionally only match those that pass the conditional
/// </summary>
/// <param name="sequenceElement"></param>
/// <param name="conditional"></param>
/// <returns></returns>
public object GetTags(SequenceElement sequenceElement, TagRelativeConditional conditional)
{
if (sequenceElement.Dataset.ContainsKey(_tag))
{
if (conditional == null || conditional.IsMatch(sequenceElement, _tag))
{
return(sequenceElement.Dataset[_tag]);
}
}
return(null);
}
private IEnumerable <object> GetValues(SequenceElement element, int i)
{
List <object> toReturn = new List <object>();
if (_navigations[i].IsLast)
{
var o = _navigations[i].GetTags(element, _conditional);
if (o is Array a)
{
//if we have a conditional which should be applied to the array elements
if (_conditionalMatchesArrayElementsOfMultiplicity)
{
a = a.Cast <object>().Where(IsMatch).ToArray();
}
//this last branch matches nothing
if (a.Length == 0)
{
return(new object[0]);
}
if (a.Length == 1)
{
toReturn.Add(a.GetValue(0));
}
else
if (!ConcatenateMultiplicity)
{
throw new TagNavigationException("Found " + a.Length + " multiplicity in leaf tag (ConcatenateMultiplicity is off - append a '&' to turn it on)");
}
else
{
toReturn.Add(string.Join(ConcatenateMultiplicitySplitter, a.Cast <object>().Select(s => s.ToString())));
}
}
else
if (IsMatch(o))
{
toReturn.Add(o);
}
}
else
{
foreach (SequenceElement subSequence in _navigations[i].GetSubset(element))
{
toReturn.AddRange(GetValues(subSequence, i + 1));
}
}
return(toReturn.ToArray());
}
private SequenceElement[] ToSequenceElementArray(IEnumerable <Dictionary <DicomTag, object> > getCSharpValue, SequenceElement location)
{
if (getCSharpValue == null)
{
return(new SequenceElement[0]);
}
var toReturn = getCSharpValue.Select(s => new SequenceElement(_tag, s, location)).ToArray();
//tell the SequenceElement about all the other elements (including itself) which appear side by side as array siblings in the sequence
foreach (SequenceElement element in toReturn)
{
element.ArraySiblings.AddRange(toReturn);
}
return(toReturn);
}