private static void TypedElementPerformance(ITypedElement nav)
{
// run extraction once to allow for caching
extract();
//System.Threading.Thread.Sleep(20000);
var sw = new Stopwatch();
sw.Start();
for (var i = 0; i < 5_000; i++)
{
extract();
}
sw.Stop();
Debug.WriteLine($"Navigating took {sw.ElapsedMilliseconds / 5 } micros");
void extract()
{
var usual = nav.Children("identifier").First().Children("use").First().Value;
var phone = nav.Children("telecom").First().Children("system").First().Value;
var prefs = nav.Children("communication").Where(c => c.Children("preferred").Any(pr => pr.Value is string s && s == "true")).Count();
var link = nav.Children("link").Children("other").Children("reference");
}
}
public static ResourceReference ParseResourceReference(this ITypedElement instance)
{
return(new ResourceReference()
{
Reference = instance.Children("reference").GetString(),
Display = instance.Children("display").GetString()
});
}
public static bool IsEmptyElement(ITypedElement element)
{
if (element is EmptyElement)
{
return(true);
}
return(element.Children().Count() == 1 && element.Children("meta").Count() == 1);
}
/// <summary>
/// Returns the Id of the resource, if the current node is a resource
/// </summary>
/// <returns></returns>
public string Id()
{
if (_cache.Id == null)
{
_cache.Id = AtResource ? "#" + Current.Children("id").FirstOrDefault()?.Value as string : null;
}
return(_cache.Id);
}
public static CodeableConcept ParseCodeableConcept(this ITypedElement instance)
{
return(new CodeableConcept()
{
Coding =
instance.Children("coding").Select(codingNav => codingNav.ParseCoding()).ToList(),
Text = instance.Children("text").GetString()
});
}
public static Coding ParseCoding(this ITypedElement instance)
{
return(new Coding()
{
System = instance.Children("system").GetString(),
Version = instance.Children("version").GetString(),
Code = instance.Children("code").GetString(),
Display = instance.Children("display").GetString(),
UserSelected = instance.Children("userSelected").SingleOrDefault()?.Value as bool?
});
}
internal static Fhir.Model.Primitives.Quantity?ParseQuantity(ITypedElement qe)
{
var value = qe.Children("value").SingleOrDefault()?.Value as decimal?;
if (value == null)
{
return(null);
}
var unit = qe.Children("code").SingleOrDefault()?.Value as string;
return(new Fhir.Model.Primitives.Quantity(value.Value, unit));
}
public static bool IsExactlyEqualTo(this ITypedElement left, ITypedElement right)
{
if (left == null && right == null)
{
return(true);
}
if (left == null || right == null)
{
return(false);
}
if (!ValueEquality(left.Value, right.Value))
{
return(false);
}
// Compare the children.
var childrenL = left.Children();
var childrenR = right.Children();
if (childrenL.Count() != childrenR.Count())
{
return(false);
}
return(childrenL.Zip(childrenR,
(childL, childR) => childL.Name == childR.Name && childL.IsExactlyEqualTo(childR)).All(t => t));
}
private void InitializeNodeCacheRecursive(ITypedElement node)
{
foreach (var child in node.Children())
{
// Cache instance type
if (_typeToNodeLookUp.ContainsKey(child.InstanceType))
{
_typeToNodeLookUp[child.InstanceType].Add(child);
}
else
{
_typeToNodeLookUp[child.InstanceType] = new List <ITypedElement> {
child
};
}
// Cache name
if (_nameToNodeLookUp.ContainsKey(child.Name))
{
_nameToNodeLookUp[child.Name].Add(child);
}
else
{
_nameToNodeLookUp[child.Name] = new List <ITypedElement> {
child
};
}
// Recursively process node's children except resource children, which will be processed independently as a resource
if (!child.IsFhirResource())
{
InitializeNodeCacheRecursive(child);
}
}
}
public static ExpandoObject ToExpando(this ITypedElement element)
{
var result = new ExpandoObject();
if (element.Value is not null)
{
result.TryAdd("value", element.Value);
}
var children = element.Children().ToArray();
for (int ix = 0; ix < children.Length; ix++)
{
if (children[ix].Definition.IsCollection)
{
var childlist = new List <ExpandoObject>();
var collectionName = children[ix].Name;
do
{
childlist.Add(children[ix].ToExpando());
ix++;
}while (ix < children.Length && children[ix].Name == collectionName);
result.TryAdd(collectionName, childlist);
}
else
{
result.TryAdd(children[ix].Name, children[ix].ToExpando());
}
}
return(result);
}
public static IEnumerable <ITypedElement> Navigate(this ITypedElement element, string name)
{
if (char.IsUpper(name[0]))
{
// If we are at a resource, we should match a path that is possibly not rooted in the resource
// (e.g. doing "name.family" on a Patient is equivalent to "Patient.name.family")
// Also we do some poor polymorphism here: Resource.meta.lastUpdated is also allowed.
var baseClasses = new[] { "Resource", "DomainResource" };
if (element.InstanceType == name || baseClasses.Contains(name))
{
return(new List <ITypedElement>()
{
element
});
}
else
{
return(Enumerable.Empty <ITypedElement>());
}
}
else
{
return(element.Children(name));
}
}
private static bool IsEmptyNode(ITypedElement node)
{
EnsureArg.IsNotNull(node);
// A node is considered empty when it has no children and its value is null
return(!node.Children().Any() && node.Value == null && !node.IsFhirResource());
}
public static bool IsEquivalentTo(this ITypedElement left, ITypedElement right, bool compareNames = false)
{
if (compareNames && !namesAreEquivalent(left, right))
{
return(false);
}
var l = left.Value;
var r = right.Value;
// TODO: this is actually a cast with knowledge of FHIR->System mappings, we don't want that here anymore
// Convert quantities
if (left.InstanceType == "Quantity" && l == null)
{
l = Typecasts.ParseQuantity(left);
}
if (right.InstanceType == "Quantity" && r == null)
{
r = Typecasts.ParseQuantity(right);
}
// Compare primitives (or extended primitives)
// TODO: Define IsEquivalentTo for ALL datatypes in ITypedElement.value and move to Support assembly + test
// TODO: Define on object, so this switch can be removed here
// TODO: Move this IsEquivalentTo to the ElementModel assembly
// Maybe create an interface?
if (l != null && r != null)
{
return(Any.IsEquivalentTo(l, r));
}
else if (l == null && r == null)
{
// Compare complex types (extensions on primitives are not compared, but handled (=ignored) above
var childrenL = left.Children();
var childrenR = right.Children();
return(childrenL.IsEquivalentTo(childrenR, compareNames: true)); // NOTE: Assumes null will never be returned when any() children exist
}
else
{
// Else, we're comparing a complex (without a value) to a primitive which (probably) should return false
return(false);
}
bool namesAreEquivalent(ITypedElement le, ITypedElement ri)
{
if (le.Name == "id" && ri.Name == "id")
{
return(true); // don't compare 'id' elements for equivalence
}
if (le.Name != ri.Name)
{
return(false);
}
return(true);
}
}
private void addChildren(ITypedElement node, JObject parent)
{
var resourceTypeIndicator = node.Annotation <IResourceTypeSupplier>()?.ResourceType;
var isResource = node.Definition?.IsResource ?? resourceTypeIndicator != null;
var containedResourceType = isResource ? (node.InstanceType ?? resourceTypeIndicator) : null;
if (containedResourceType != null)
{
parent.AddFirst(new JProperty(JsonSerializationDetails.RESOURCETYPE_MEMBER_NAME, containedResourceType));
}
foreach (var nameGroup in node.Children().GroupBy(n => n.Name))
{
var members = nameGroup.ToList();
// serialization info should be the same for each element in an
// array - but do not explicitly check that
if (!MustSerializeMember(members[0], out var generalInfo))
{
break;
}
bool hasTypeInfo = generalInfo != null;
// If we have type information, we know whather we need an array.
// failing that, check whether this is a roundtrip and we have the information
// about arrays in the serialization deails. Failing that, assume the default:
// for unknown properties is to use an array - safest bet.
var generalJsonDetails = members[0].GetJsonSerializationDetails();
var hasIndex = generalJsonDetails?.ArrayIndex != null;
var needsArray = generalInfo?.IsCollection ?? hasIndex;
var children = members.Select(m => buildNode(m))
.Where(c => !(c.first == null && c.second == null)).ToList();
// Don't add empty nodes to the parent
if (!children.Any())
{
continue;
}
var needsMainProperty = children.Any(c => c.first != null);
var needsShadowProperty = children.Any(c => c.second != null);
var propertyName = generalInfo?.IsChoiceElement == true ?
members[0].Name + members[0].InstanceType.Capitalize() : members[0].Name;
if (needsMainProperty)
{
parent.Add(new JProperty(propertyName,
needsArray ? new JArray(children.Select(c => c.first ?? JValue.CreateNull())) : children[0].first));
}
if (needsShadowProperty)
{
parent.Add(new JProperty("_" + propertyName,
needsArray ? new JArray(children.Select(c => (JToken)c.second ?? JValue.CreateNull())) : (JToken)children[0].second));
}
}
}
private static void visit(this ITypedElement root, Action <int, ITypedElement> visitor, int depth = 0)
{
visitor(depth, root);
foreach (var child in root.Children())
{
visit(child, visitor, depth + 1);
}
}
public ProfilePreprocessor(Func <string, StructureDefinition> profileResolver, Func <StructureDefinition, OperationOutcome> snapshotGenerator,
ITypedElement instance, string declaredTypeProfile,
IEnumerable <StructureDefinition> additionalProfiles, IEnumerable <string> additionalCanonicals)
{
_profileResolver = profileResolver;
_snapshotGenerator = snapshotGenerator;
_path = instance.Location;
_profiles = new ProfileAssertion(_path, _profileResolver);
if (instance.InstanceType != null)
{
_profiles.SetInstanceType(ModelInfo.CanonicalUriForFhirCoreType(instance.InstanceType));
}
if (declaredTypeProfile != null)
{
_profiles.SetDeclaredType(declaredTypeProfile);
}
// This is only for resources, but I don't bother checking, since this will return empty anyway
_profiles.AddStatedProfile(instance.Children("meta").Children("profile").Select(p => p.Value).Cast <string>());
//Almost identically, extensions can declare adherance to a profile using the 'url' attribute
if (declaredTypeProfile == ModelInfo.CanonicalUriForFhirCoreType(FHIRDefinedType.Extension))
{
var urlDeclaration = instance.Children("url").FirstOrDefault()?.Value as string;
if (urlDeclaration != null && urlDeclaration.StartsWith("http://", StringComparison.OrdinalIgnoreCase))
{
_profiles.AddStatedProfile(urlDeclaration);
}
}
if (additionalProfiles != null)
{
_profiles.AddStatedProfile(additionalProfiles);
}
if (additionalCanonicals != null)
{
_profiles.AddStatedProfile(additionalCanonicals);
}
}
public static void ProducedCorrectTypedLocations(ITypedElement patient)
{
string getPretty(ITypedElement n) => n.Annotation <IShortPathGenerator>().ShortPath;
Assert.AreEqual("Patient", getPretty(patient));
var patientC = patient.Children().ToList();
Assert.AreEqual("Patient.id", getPretty(patient.Children("id").First()));
var ids = patient.Children("identifier").ToList();
Assert.AreEqual("Patient.identifier[0]", getPretty(ids[0]));
Assert.AreEqual("Patient.identifier[0].use", getPretty(ids[0].Children("use").Single()));
Assert.AreEqual("Patient.identifier[1]", getPretty(ids[1]));
Assert.AreEqual("Patient.identifier[1].use", getPretty(ids[1].Children("use").Single()));
Assert.AreEqual("Patient.deceased", getPretty(patient.Children("deceased").Single()));
Assert.AreEqual("Patient.contained[0].name[1].use",
getPretty(patient.Children("contained").First().Children("name").Skip(1)
.First().Children("use").Single()));
}
/// <summary>
/// Parses a bindeable type (code, Coding, CodeableConcept, Quantity, string, uri) into a FHIR coded datatype.
/// Extensions will be parsed from the 'value' of the (simple) extension.
/// </summary>
/// <param name="instance"></param>
/// <returns>An Element of a coded type (code, Coding or CodeableConcept) dependin on the instance type,
/// or null if no bindable instance data was found</returns>
/// <remarks>The instance type is mapped to a codable type as follows:
/// 'code' => code
/// 'Coding' => Coding
/// 'CodeableConcept' => CodeableConcept
/// 'Quantity' => Coding
/// 'Extension' => depends on value[x]
/// 'string' => code
/// 'uri' => code
/// </remarks>
public static Element ParseBindable(this ITypedElement instance)
{
var instanceType = ModelInfo.FhirTypeNameToFhirType(instance.InstanceType);
switch (instanceType)
{
case FHIRDefinedType.Code:
return(instance.ParsePrimitive <Code>());
case FHIRDefinedType.Coding:
return(instance.ParseCoding());
case FHIRDefinedType.CodeableConcept:
return(instance.ParseCodeableConcept());
case FHIRDefinedType.Quantity:
return(parseQuantity(instance));
case FHIRDefinedType.String:
return(new Code(instance.ParsePrimitive <FhirString>()?.Value));
case FHIRDefinedType.Uri:
return(new Code(instance.ParsePrimitive <FhirUri>()?.Value));
case FHIRDefinedType.Extension:
return(parseExtension(instance));
case null:
//HACK: fall through - IElementNav did not provide a type
//should not happen, and I have no intention to handle it.
default:
// Not bindable
return(null);
}
Coding parseQuantity(ITypedElement nav)
{
var newCoding = new Coding();
var q = instance.ParseQuantity();
newCoding.Code = q.Unit;
newCoding.System = q.System ?? "http://unitsofmeasure.org";
return(newCoding);
}
Element parseExtension(ITypedElement nav)
{
// HACK: For now, assume this is a typed navigator, so we have "value",
// not the unparsed "valueCode" etc AND we have Type (in ParseBindable())
var valueChild = instance.Children("value").FirstOrDefault();
return(valueChild?.ParseBindable());
}
}
/// <summary>
/// Get property value from ITypedElement.
/// </summary>
/// <param name="element">self element.</param>
/// <param name="propertyName">property name.</param>
/// <returns>property value.</returns>
public static object GetPropertyValue(
this ITypedElement element,
string propertyName)
{
if (element == null ||
string.IsNullOrEmpty(propertyName))
{
return(null);
}
return(element.Children(propertyName).FirstOrDefault()?.Value);
}
public static IEnumerable <ITypedElement> Descendants(this ITypedElement element)
{
foreach (var child in element.Children())
{
yield return(child);
foreach (var grandchild in child.Descendants())
{
yield return(grandchild);
}
}
}
public static DateTime?GetLastUpdatedDay(this ITypedElement element)
{
var result = element?.Children(FhirBundleConstants.MetaKey).FirstOrDefault()?.GetPropertyValue(FhirBundleConstants.LastUpdatedKey);
if (result == null)
{
return(null);
}
var lastUpdateDatetime = DateTimeOffset.Parse(result.ToString());
return(new DateTime(lastUpdateDatetime.Year, lastUpdateDatetime.Month, lastUpdateDatetime.Day));
}
public static Model.Quantity ParseQuantity(this ITypedElement instance)
{
var newQuantity = new Quantity
{
Value = instance.Children("value").SingleOrDefault()?.Value as decimal?,
Unit = instance.Children("unit").GetString(),
System = instance.Children("system").GetString(),
Code = instance.Children("code").GetString()
};
var comp = instance.Children("comparator").GetString();
if (comp != null)
{
newQuantity.ComparatorElement = new Code <Quantity.QuantityComparator> {
ObjectValue = comp
}
}
;
return(newQuantity);
}
public static bool IsEqualTo(this ITypedElement left, ITypedElement right, bool compareNames = false)
{
// TODO: Merge with ElementNodeComparator.IsEqualTo
if (compareNames && (left.Name != right.Name))
{
return(false);
}
var l = CastIntToLong(left.Value);
var r = CastIntToLong(right.Value);
// TODO: this is actually a cast with knowledge of FHIR->System mappings, we don't want that here anymore
// Convert quantities
if (left.InstanceType == "Quantity" && l == null)
{
l = Typecasts.ParseQuantity(left);
}
if (right.InstanceType == "Quantity" && r == null)
{
r = Typecasts.ParseQuantity(right);
}
// Compare primitives (or extended primitives)
if (l != null && r != null)
{
return(Any.IsEqualTo(l, r));
}
else if (l == null && r == null)
{
// Compare complex types (extensions on primitives are not compared, but handled (=ignored) above
var childrenL = left.Children();
var childrenR = right.Children();
return(childrenL.IsEqualTo(childrenR, compareNames: true)); // NOTE: Assumes null will never be returned when any() children exist
}
else
{
// Else, we're comparing a complex (without a value) to a primitive which (probably) should return false
return(false);
}
object CastIntToLong(object val)
{
// [MV 20200128] Because FhirPath works with longs, integers will be cast to longs
return(val?.GetType() == typeof(int) ? Convert.ToInt64(val) : val);
}
}
/// <summary>
/// Compares two <see cref="ITypedElement"/> trees.
/// </summary>
/// <param name="expected">The tree that contains the expected, "correct" data.</param>
/// <param name="actual">The tree to compare against the <paramref name="expected"/> tree.</param>
/// <returns>A <see cref="TreeComparisonResult"/> that summarizes the differences between the trees.</returns>
public static TreeComparisonResult IsEqualTo(this ITypedElement expected, ITypedElement actual)
{
if (expected.Name != actual.Name)
{
return(TreeComparisonResult.Fail(actual.Location, $"name: was '{actual.Name}', expected '{expected.Name}'"));
}
if (!Object.Equals(expected.Value, actual.Value))
{
return(TreeComparisonResult.Fail(actual.Location, $"value: was '{actual.Value}', expected '{expected.Value}'"));
}
if (expected.InstanceType != actual.InstanceType && actual.InstanceType != null)
{
return(TreeComparisonResult.Fail(actual.Location, $"type: was '{actual.InstanceType}', expected '{expected.InstanceType}'"));
}
if (expected.Location != actual.Location)
{
TreeComparisonResult.Fail(actual.Location, $"Path: was '{actual.Location}', expected '{expected.Location}'");
}
// Ignore ordering (only relevant to xml)
var childrenExp = expected.Children().OrderBy(e => e.Name);
var childrenActual = actual.Children().OrderBy(e => e.Name).GetEnumerator();
// Don't compare lengths, as this would require complete enumeration of both collections
// just enumerate through the lists, comparing each item as they go.
// first fail (or list end) will drop out.
foreach (var exp in childrenExp)
{
if (!childrenActual.MoveNext())
{
TreeComparisonResult.Fail(actual.Location, $"number of children was different");
}
var result = exp.IsEqualTo(childrenActual.Current);
if (!result.Success)
{
return(result);
}
}
if (childrenActual.MoveNext())
{
TreeComparisonResult.Fail(actual.Location, $"number of children was different");
}
return(TreeComparisonResult.OK);
}
public static IEnumerable <ITypedElement> ResourceDescendantsWithoutSubResource(this ITypedElement node)
{
foreach (var child in node.Children())
{
// Skip sub resources in bundle entry and contained list
if (child.IsFhirResource())
{
continue;
}
yield return(child);
foreach (var n in child.ResourceDescendantsWithoutSubResource())
{
yield return(n);
}
}
}
public static MatchResult Match(ElementDefinitionNavigator definitionParent, ITypedElement instanceParent)
{
var definitionElements = harvestDefinitionNames(definitionParent);
var elementsToMatch = instanceParent.Children().Cast <ScopedNode>().ToList();
List <Match> matches = new List <Match>();
foreach (var definitionElement in definitionElements)
{
var match = new Match()
{
Definition = definitionElement, InstanceElements = new List <ITypedElement>()
};
// Special case is the .value of a primitive fhir type, this is represented
// as the "Value" of the IValueProvider interface, not as a real child
if (definitionElement.Current.IsPrimitiveValueConstraint())
{
if (instanceParent.Value != null)
{
match.InstanceElements.Add(instanceParent);
}
}
else
{
var definitionPath = ProfileNavigationExtensions.GetNameFromPath(definitionElement.Current?.Base?.Path ?? definitionElement.Path);
var found = elementsToMatch.Where(ie => NameMatches(definitionPath, ie)).ToList();
match.InstanceElements.AddRange(found);
elementsToMatch.RemoveAll(e => found.Contains(e));
}
matches.Add(match);
}
MatchResult result = new MatchResult();
result.Matches = matches;
result.UnmatchedInstanceElements = elementsToMatch;
return(result);
}
internal Base Deserialize(ClassMapping mapping, Base existing = null)
{
var mappingToUse = mapping;
if (mappingToUse == null)
{
if (_current.InstanceType is null)
{
throw Error.Format("Underlying data source was not able to provide the actual instance type of the resource.");
}
mappingToUse = (ClassMapping)_inspector.Provide(_current.InstanceType);
if (mappingToUse == null)
{
RaiseFormatError($"Asked to deserialize unknown type '{_current.InstanceType}'", _current.Location);
}
}
if (existing == null)
{
var fac = new DefaultModelFactory();
existing = (Base)fac.Create(mappingToUse.NativeType);
}
else
{
if (mappingToUse.NativeType != existing.GetType())
{
throw Error.Argument(nameof(existing), "Existing instance is of type {0}, but data indicates resource is a {1}".FormatWith(existing.GetType().Name, mappingToUse.NativeType.Name));
}
}
// The older code for read() assumes the primitive value member is represented as a separate child element named "value",
// while the newer ITypedElement represents this as a special Value property. We simulate the old behaviour here, by
// explicitly adding the value property as a child and making it act like a typed node.
var members = _current.Value != null ?
new[] { new ValuePropertyTypedElement(_current) }.Union(_current.Children()) : _current.Children();
read(mappingToUse, members, existing);
return(existing);
}
private static ElementNode buildNode(ITypedElement node, bool recursive, IEnumerable <Type> annotationsToCopy, ElementNode parent)
{
var me = new ElementNode(node.Name, node.Value, node.InstanceType, node.Definition)
{
Parent = parent
};
foreach (var t in annotationsToCopy ?? Enumerable.Empty <Type>())
{
foreach (var ann in node.Annotations(t))
{
me.AddAnnotation(ann);
}
}
if (recursive)
{
me.ChildList.AddRange(node.Children().Select(c => buildNode(c, recursive: true, annotationsToCopy: annotationsToCopy, me)));
}
return(me);
}
public static bool Matches(this ITypedElement value, ITypedElement pattern)
{
if (value == null && pattern == null)
{
return(true);
}
if (value == null || pattern == null)
{
return(false);
}
if (!ValueEquality(value.Value, pattern.Value))
{
return(false);
}
// Compare the children.
var valueChildren = value.Children();
var patternChildren = pattern.Children();
return(patternChildren.All(patternChild => valueChildren.Any(valueChild =>
patternChild.Name == valueChild.Name && valueChild.Matches(patternChild))));
}
internal Base Deserialize(ClassMapping mapping, Base existing = null)
{
if (mapping == null)
{
throw Error.ArgumentNull(nameof(mapping));
}
if (existing == null)
{
var fac = new DefaultModelFactory();
existing = (Base)fac.Create(mapping.NativeType);
}
else
{
if (mapping.NativeType != existing.GetType())
{
throw Error.Argument(nameof(existing), "Existing instance is of type {0}, but data indicates resource is a {1}".FormatWith(existing.GetType().Name, mapping.NativeType.Name));
}
}
// The older code for read() assumes the primitive value member is represented as a separate child element named "value",
// while the newer ITypedElement represents this as a special Value property. We simulate the old behaviour here, by
// explicitly adding the value property as a child and making it act like a typed node.
var members = _current.Value != null ?
new[] { new ValuePropertyTypedElement(_current) }.Union(_current.Children()) : _current.Children();
try
{
read(mapping, members, existing);
}
catch (StructuralTypeException ste)
{
throw Error.Format(ste.Message);
}
return(existing);
}
