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

Example 16 with Argument

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

the class GraphQLEngine method resolveValues.

private List<Value> resolveValues(Argument arg, int max, String vars) throws EGraphQLException {
    List<Value> result = new ArrayList<Value>();
    for (Value v : arg.getValues()) {
        if (!(v instanceof VariableValue))
            result.add(v);
        else {
            if (vars.contains(":" + v.toString() + ":"))
                throw new EGraphQLException("Recursive reference to variable " + v.toString());
            Argument a = workingVariables.get(v.toString());
            if (a == null)
                throw new EGraphQLException("No value found for variable \"" + v.toString() + "\" in \"" + arg.getName() + "\"");
            List<Value> vl = resolveValues(a, -1, vars + ":" + v.toString() + ":");
            result.addAll(vl);
        }
    }
    if ((max != -1 && result.size() > max))
        throw new EGraphQLException("Only " + Integer.toString(max) + " values are allowed for \"" + arg.getName() + "\", but " + Integer.toString(result.size()) + " enoucntered");
    return result;
}

Example 17 with Argument

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, List<IBaseResource> list) throws EGraphQLException, FHIRException {
    List<Resource> result = new ArrayList<Resource>();
    if (list.size() > 0) {
        if ((fhirpath == null))
            for (IBaseResource v : list) result.add((Resource) v);
        else {
            FHIRPathEngine fpe = new FHIRPathEngine(context);
            ExpressionNode node = fpe.parse(getSingleValue(fhirpath));
            for (IBaseResource v : list) if (fpe.evaluateToBoolean(null, (Resource) v, (Base) v, node))
                result.add((Resource) v);
        }
    }
    return result;
}

Example 18 with Argument

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

the class GraphDefinitionEngine method parseParams.

private void parseParams(List<Argument> params, String value, Resource res) {
    boolean refed = false;
    Map<String, List<String>> p = splitQuery(value);
    for (String n : p.keySet()) {
        for (String v : p.get(n)) {
            if (v.equals("{ref}")) {
                refed = true;
                v = res.fhirType() + '/' + res.getId();
            }
            params.add(new Argument(n, new StringValue(v)));
        }
    }
    check(refed, "no use of {ref} found");
}

Example 19 with Argument

use of org.hl7.fhir.utilities.graphql.Argument 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 20 with Argument

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);
        }
    }
}