Examples with GraphDefinitionLinkComponent org.hl7.fhir.r4b.model.GraphDefinition.GraphDefinitionLinkComponent used on opensource projects

Example 6 with GraphDefinitionLinkComponent

use of org.hl7.fhir.r4b.model.GraphDefinition.GraphDefinitionLinkComponent in project org.hl7.fhir.core by hapifhir.

the class GraphDefinitionEngine method processLinkTarget.

private void processLinkTarget(String focusPath, Resource focus, GraphDefinitionLinkComponent link, int depth) {
    check(link.getTarget().size() == 1, "If there is no path, there must be one and only one target at " + focusPath);
    check(link.getTarget().get(0).hasType(), "If there is no path, there must be type on the target at " + focusPath);
    check(link.getTarget().get(0).getParams().contains("{ref}"), "If there is no path, the target must have parameters that include a parameter using {ref} at " + focusPath);
    String path = focusPath + " -> " + link.getTarget().get(0).getType() + "?" + link.getTarget().get(0).getParams();
    List<IBaseResource> list = new ArrayList<>();
    List<Argument> params = new ArrayList<>();
    parseParams(params, link.getTarget().get(0).getParams(), focus);
    services.listResources(appInfo, link.getTarget().get(0).getType(), params, list);
    check(!validating || (list.size() >= (link.hasMin() ? link.getMin() : 0)), "Link at path " + path + " requires at least " + link.getMin() + " matches, but only found " + list.size());
    check(!validating || (list.size() <= (link.hasMax() && !link.getMax().equals("*") ? Integer.parseInt(link.getMax()) : Integer.MAX_VALUE)), "Link at path " + path + " requires at most " + link.getMax() + " matches, but found " + list.size());
    for (IBaseResource res : list) {
        Resource r = (Resource) res;
        if (!isInBundle(r)) {
            addToBundle(r);
            // Grahame Grieve 17-06-2020: this seems wrong to me - why restart?
            for (GraphDefinitionLinkComponent l : graphDefinition.getLink()) {
                processLink(start.fhirType(), start, l, depth + 1);
            }
        }
    }
}