Examples with ReferenceResolution org.hl7.fhir.utilities.graphql.IGraphQLStorageServices.ReferenceResolution used on opensource projects

Example 1 with ReferenceResolution

use of org.hl7.fhir.utilities.graphql.IGraphQLStorageServices.ReferenceResolution in project org.hl7.fhir.core by hapifhir.

the class GraphDefinitionEngine method processLinkPath.

private void processLinkPath(String focusPath, Resource focus, GraphDefinitionLinkComponent link, int depth) {
    String path = focusPath + " -> " + link.getPath();
    check(link.hasPath(), "Path is needed at " + path);
    check(!link.hasSliceName(), "SliceName is not yet supported at " + path);
    ExpressionNode node;
    if (link.getPathElement().hasUserData(TAG_NAME)) {
        node = (ExpressionNode) link.getPathElement().getUserData(TAG_NAME);
    } else {
        node = engine.parse(link.getPath());
        link.getPathElement().setUserData(TAG_NAME, node);
    }
    List<Base> matches = engine.evaluate(null, focus, focus, focus, node);
    check(!validating || matches.size() >= (link.hasMin() ? link.getMin() : 0), "Link at path " + path + " requires at least " + link.getMin() + " matches, but only found " + matches.size());
    check(!validating || matches.size() <= (link.hasMax() ? Integer.parseInt(link.getMax()) : Integer.MAX_VALUE), "Link at path " + path + " requires at most " + link.getMax() + " matches, but found " + matches.size());
    for (Base sel : matches) {
        // todo: should a URL be ok?
        check(sel.fhirType().equals("Reference"), "Selected node from an expression must be a Reference");
        ReferenceResolution res = services.lookup(appInfo, focus, (Reference) sel);
        if (res != null) {
            // todo
            check(res.getTargetContext() != focus, "how to handle contained resources is not yet resolved");
            for (GraphDefinitionLinkTargetComponent tl : link.getTarget()) {
                if (tl.getType().equals(res.getTarget().fhirType())) {
                    Resource r = (Resource) res.getTarget();
                    if (!isInBundle(r)) {
                        addToBundle(r);
                        for (GraphDefinitionLinkComponent l : graphDefinition.getLink()) {
                            processLink(focus.fhirType(), r, l, depth + 1);
                        }
                    }
                }
            }
        }
    }
}

Example 2 with ReferenceResolution

use of org.hl7.fhir.utilities.graphql.IGraphQLStorageServices.ReferenceResolution in project org.hl7.fhir.core by hapifhir.

the class GraphQLEngine method processReference.

private void processReference(Resource context, Base source, Field field, ObjectValue target, boolean inheritedList, String suffix) throws EGraphQLException, FHIRException {
    if (!(source instanceof Reference))
        throw new EGraphQLException("Not done yet");
    if (services == null)
        throw new EGraphQLException("Resource Referencing services not provided");
    Reference ref = (Reference) source;
    ReferenceResolution res = services.lookup(appInfo, context, ref);
    if (res != null) {
        if (targetTypeOk(field.getArguments(), res.getTarget())) {
            Argument arg = target.addField(field.getAlias() + suffix, listStatus(field, inheritedList));
            ObjectValue obj = new ObjectValue();
            arg.addValue(obj);
            processObject((Resource) res.getTargetContext(), (Base) res.getTarget(), obj, field.getSelectionSet(), inheritedList, suffix);
        }
    } else if (!hasArgument(field.getArguments(), "optional", "true"))
        throw new EGraphQLException("Unable to resolve reference to " + ref.getReference());
}

Example 3 with ReferenceResolution

use of org.hl7.fhir.utilities.graphql.IGraphQLStorageServices.ReferenceResolution in project org.hl7.fhir.core by hapifhir.

the class GraphQLEngineTests method lookup.

@Override
public ReferenceResolution lookup(Object appInfo, IBaseResource context, IBaseReference reference) throws FHIRException {
    try {
        if (reference.getReferenceElement().isLocal()) {
            if (!(context instanceof DomainResource))
                return null;
            for (Resource r : ((DomainResource) context).getContained()) {
                if (('#' + r.getId()).equals(reference.getReferenceElement().getValue())) {
                    return new ReferenceResolution(context, r);
                }
            }
        } else {
            String[] parts = reference.getReferenceElement().getValue().split("/");
            String filename = TestingUtilities.resourceNameToFile(parts[0].toLowerCase() + '-' + parts[1].toLowerCase() + ".xml");
            if (new File(filename).exists())
                return new ReferenceResolution(null, new XmlParser().parse(new FileInputStream(filename)));
        }
        return null;
    } catch (Exception e) {
        throw new FHIRException(e);
    }
}

Example 4 with ReferenceResolution

use of org.hl7.fhir.utilities.graphql.IGraphQLStorageServices.ReferenceResolution in project org.hl7.fhir.core by hapifhir.

the class GraphQLEngine method processCanonicalReference.

private void processCanonicalReference(Resource context, Base source, Field field, ObjectValue target, boolean inheritedList, String suffix) throws EGraphQLException, FHIRException {
    if (!(source instanceof CanonicalType))
        throw new EGraphQLException("Not done yet");
    if (services == null)
        throw new EGraphQLException("Resource Referencing services not provided");
    Reference ref = new Reference(source.primitiveValue());
    ReferenceResolution res = services.lookup(appInfo, context, ref);
    if (res != null) {
        if (targetTypeOk(field.getArguments(), res.getTarget())) {
            Argument arg = target.addField(field.getAlias() + suffix, listStatus(field, inheritedList));
            ObjectValue obj = new ObjectValue();
            arg.addValue(obj);
            processObject((Resource) res.getTargetContext(), (Base) res.getTarget(), obj, field.getSelectionSet(), inheritedList, suffix);
        }
    } else if (!hasArgument(field.getArguments(), "optional", "true"))
        throw new EGraphQLException("Unable to resolve reference to " + ref.getReference());
}

Example 5 with ReferenceResolution

use of org.hl7.fhir.utilities.graphql.IGraphQLStorageServices.ReferenceResolution in project org.hl7.fhir.core by hapifhir.

the class GraphQLEngine method processReference.

private void processReference(Resource context, Base source, Field field, ObjectValue target, boolean inheritedList, String suffix) throws EGraphQLException, FHIRException {
    if (!(source instanceof Reference))
        throw new EGraphQLException("Not done yet");
    if (services == null)
        throw new EGraphQLException("Resource Referencing services not provided");
    Reference ref = (Reference) source;
    ReferenceResolution res = services.lookup(appInfo, context, ref);
    if (res != null) {
        if (targetTypeOk(field.getArguments(), res.getTarget())) {
            Argument arg = target.addField(field.getAlias() + suffix, listStatus(field, inheritedList));
            ObjectValue obj = new ObjectValue();
            arg.addValue(obj);
            processObject((Resource) res.getTargetContext(), (Base) res.getTarget(), obj, field.getSelectionSet(), inheritedList, suffix);
        }
    } else if (!hasArgument(field.getArguments(), "optional", "true"))
        throw new EGraphQLException("Unable to resolve reference to " + ref.getReference());
}