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| 1 | +package de.medizininformatikinitiative.torch.model.management; |
| 2 | + |
| 3 | +import de.medizininformatikinitiative.torch.util.CompiledStructureDefinition; |
| 4 | +import org.hl7.fhir.r4.model.Base; |
| 5 | +import org.hl7.fhir.r4.model.ElementDefinition; |
| 6 | +import org.hl7.fhir.r4.model.Extension; |
| 7 | + |
| 8 | +import java.util.List; |
| 9 | +import java.util.Map; |
| 10 | +import java.util.Optional; |
| 11 | +import java.util.Set; |
| 12 | +import java.util.function.Predicate; |
| 13 | +import java.util.stream.Collectors; |
| 14 | +import java.util.stream.Stream; |
| 15 | + |
| 16 | +public record MultiElementContext(List<ElementContext> contexts, Map<String, Set<String>> references) { |
| 17 | + |
| 18 | + public MultiElementContext { |
| 19 | + contexts = List.copyOf(contexts); |
| 20 | + references = Map.copyOf(references); |
| 21 | + } |
| 22 | + |
| 23 | + public MultiElementContext(String elementId, List<CompiledStructureDefinition> definitions, Map<String, Set<String>> references) { |
| 24 | + this(definitions.stream().map(compiledStructureDefinition -> new ElementContext(elementId, compiledStructureDefinition)).toList(), references); |
| 25 | + } |
| 26 | + |
| 27 | + /** |
| 28 | + * Attempts to resolve slice contexts for the given data element. |
| 29 | + * <p> |
| 30 | + * If matching slices are found, they are passed to the provided {@code sliceConsumer}. |
| 31 | + * If the consumer returns {@code false}, a new {@code MultiElementContext} is returned |
| 32 | + * that includes the matching slices and the existing non-sliced contexts. |
| 33 | + * If the consumer returns {@code true}, no context is returned. |
| 34 | + * |
| 35 | + * @param dataElement the element to match against slice definitions |
| 36 | + * @param sliceConsumer a predicate to inspect or process matching slices; if it returns {@code true}, result is discarded |
| 37 | + * @return an {@code Optional} containing the updated {@code MultiElementContext}, or empty if suppressed by the consumer |
| 38 | + */ |
| 39 | + public Optional<MultiElementContext> resolveSlices(Base dataElement, Predicate<List<ElementContext>> sliceConsumer) { |
| 40 | + List<ElementContext> slices = contexts.stream().filter(ElementContext::hasSlicing) |
| 41 | + .flatMap(ctx -> ctx.matchingSlice(dataElement).stream()) |
| 42 | + .toList(); |
| 43 | + return sliceConsumer.test(slices) ? Optional.empty() : Optional.of(mergeWithSlices(slices)); |
| 44 | + } |
| 45 | + |
| 46 | + public boolean shouldRedactExtension(Extension extension) { |
| 47 | + return !isDataAbsentReason(extension) && !hasSlice(extension); |
| 48 | + } |
| 49 | + |
| 50 | + /** |
| 51 | + * Checks if the given element is a sliced element. |
| 52 | + * |
| 53 | + * @param dataElement HAPI Base (Element) which should be checked |
| 54 | + * @return true if any slicing found, false otherwise |
| 55 | + */ |
| 56 | + public boolean hasSlice(Base dataElement) { |
| 57 | + return contexts.stream() |
| 58 | + .flatMap(context -> context.matchingSlice(dataElement).stream()) |
| 59 | + .findAny() |
| 60 | + .isPresent(); |
| 61 | + } |
| 62 | + |
| 63 | + public Set<String> allowedReferences() { |
| 64 | + return contexts.stream() |
| 65 | + .map(ElementContext::elementId) |
| 66 | + .map(id -> references().getOrDefault(id, Set.of())) |
| 67 | + .flatMap(Set::stream) |
| 68 | + .collect(Collectors.toSet()); |
| 69 | + } |
| 70 | + |
| 71 | + private boolean isDataAbsentReason(Extension extension) { |
| 72 | + return "http://hl7.org/fhir/StructureDefinition/data-absent-reason".equals(extension.getUrl()); |
| 73 | + } |
| 74 | + |
| 75 | + public MultiElementContext mergeWithSlices(List<ElementContext> slices) { |
| 76 | + List<ElementContext> all = Stream.concat( |
| 77 | + slices.stream(), |
| 78 | + contexts.stream().filter(ctx -> !ctx.hasSlicing()) |
| 79 | + ).toList(); |
| 80 | + return new MultiElementContext(all, references()); |
| 81 | + } |
| 82 | + |
| 83 | + /** |
| 84 | + * Returns a new {@code MultiElementContext} by descending into the specified child element |
| 85 | + * for each contained {@code ElementContext}. |
| 86 | + * <p> |
| 87 | + * This effectively advances all contexts one level deeper along the given {@code childName}, |
| 88 | + * preserving any associated references. |
| 89 | + * |
| 90 | + * @param childName the name of the child element to descend into |
| 91 | + * @return a new {@code MultiElementContext} with updated {@code ElementContext}s |
| 92 | + */ |
| 93 | + public MultiElementContext descend(String childName) { |
| 94 | + return new MultiElementContext(contexts.stream().map(ctx -> ctx.descend(childName)).toList(), references); |
| 95 | + } |
| 96 | + |
| 97 | + /** |
| 98 | + * Checks if any element definition has a slicing defined. |
| 99 | + * |
| 100 | + * @return true if slicing present and false otherwise. |
| 101 | + */ |
| 102 | + public boolean hasSlicing() { |
| 103 | + return elementDefinitions().anyMatch(ElementDefinition::hasSlicing); |
| 104 | + } |
| 105 | + |
| 106 | + public Stream<ElementDefinition> elementDefinitions() { |
| 107 | + return contexts.stream().flatMap(elementContext -> elementContext.elementDefinition().stream()); |
| 108 | + } |
| 109 | + |
| 110 | + /** |
| 111 | + * Checks if any element definitions has minimum cardinality >0. |
| 112 | + * |
| 113 | + * @return true if one element definition is required for at least one associated profile other false. |
| 114 | + */ |
| 115 | + public boolean required() { |
| 116 | + return elementDefinitions().anyMatch(elementDefinition -> elementDefinition.getMin() > 0); |
| 117 | + } |
| 118 | + |
| 119 | + public List<String> workingCodes() { |
| 120 | + return elementDefinitions() |
| 121 | + .flatMap(elementDefinition -> elementDefinition.getType().stream() |
| 122 | + .map(ElementDefinition.TypeRefComponent::getWorkingCode)) |
| 123 | + .toList(); |
| 124 | + } |
| 125 | +} |
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