use of org.hl7.fhir.utilities.graphql.Argument 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);
}
}
}
}
use of org.hl7.fhir.utilities.graphql.Argument 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 (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());
}
use of org.hl7.fhir.utilities.graphql.Argument in project org.hl7.fhir.core by hapifhir.
the class GraphQLEngine method filterResources.
private List<Resource> filterResources(Argument fhirpath, Bundle bnd) throws EGraphQLException, FHIRException {
List<Resource> result = new ArrayList<Resource>();
if (bnd.getEntry().size() > 0) {
if ((fhirpath == null))
for (BundleEntryComponent be : bnd.getEntry()) result.add(be.getResource());
else {
FHIRPathEngine fpe = new FHIRPathEngine(context);
ExpressionNode node = fpe.parse(getSingleValue(fhirpath));
for (BundleEntryComponent be : bnd.getEntry()) if (fpe.evaluateToBoolean(null, be.getResource(), be.getResource(), node))
result.add(be.getResource());
}
}
return result;
}
use of org.hl7.fhir.utilities.graphql.Argument in project org.hl7.fhir.core by hapifhir.
the class GraphQLEngine method processReverseReferenceList.
private void processReverseReferenceList(Resource source, Field field, ObjectValue target, boolean inheritedList, String suffix) throws EGraphQLException, FHIRException {
if (services == null)
throw new EGraphQLException("Resource Referencing services not provided");
List<IBaseResource> list = new ArrayList<>();
List<Argument> params = new ArrayList<>();
Argument parg = null;
for (Argument a : field.getArguments()) if (!(a.getName().equals("_reference")))
params.add(a);
else if ((parg == null))
parg = a;
else
throw new EGraphQLException("Duplicate parameter _reference");
if (parg == null)
throw new EGraphQLException("Missing parameter _reference");
Argument arg = new Argument();
params.add(arg);
arg.setName(getSingleValue(parg));
arg.addValue(new StringValue(source.fhirType() + "/" + source.getIdPart()));
services.listResources(appInfo, field.getName().substring(0, field.getName().length() - 4), params, list);
arg = null;
ObjectValue obj = null;
List<Resource> vl = filterResources(field.argument("fhirpath"), list);
if (!vl.isEmpty()) {
arg = target.addField(field.getAlias() + suffix, listStatus(field, true));
for (Resource v : vl) {
obj = new ObjectValue();
arg.addValue(obj);
processObject(v, v, obj, field.getSelectionSet(), inheritedList, suffix);
}
}
}
use of org.hl7.fhir.utilities.graphql.Argument 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());
}
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