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

Example 11 with EGraphQLException

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

the class GraphQLEngine method processSearchSimple.

private void processSearchSimple(ObjectValue target, Field field, boolean inheritedList, String suffix) throws EGraphQLException, FHIRException {
    if (services == null)
        throw new EGraphQLException("Resource Referencing services not provided");
    List<IBaseResource> list = new ArrayList<>();
    services.listResources(appInfo, field.getName().substring(0, field.getName().length() - 4), field.getArguments(), list);
    Argument 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);
        }
    }
}

Example 12 with EGraphQLException

use of org.hl7.fhir.utilities.graphql.EGraphQLException 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 13 with EGraphQLException

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

the class GraphQLEngine method checkDirectives.

private boolean checkDirectives(List<Directive> directives) throws EGraphQLException {
    Directive skip = null;
    Directive include = null;
    for (Directive dir : directives) {
        if (dir.getName().equals("skip")) {
            if ((skip == null))
                skip = dir;
            else
                throw new EGraphQLException("Duplicate @skip directives");
        } else if (dir.getName().equals("include")) {
            if ((include == null))
                include = dir;
            else
                throw new EGraphQLException("Duplicate @include directives");
        } else if (!Utilities.existsInList(dir.getName(), "flatten", "first", "singleton", "slice"))
            throw new EGraphQLException("Directive \"" + dir.getName() + "\" instanceof not recognised");
    }
    if ((skip != null && include != null))
        throw new EGraphQLException("Cannot mix @skip and @include directives");
    if (skip != null)
        return !checkBooleanDirective(skip);
    else if (include != null)
        return checkBooleanDirective(include);
    else
        return true;
}

Example 14 with EGraphQLException

use of org.hl7.fhir.utilities.graphql.EGraphQLException 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 15 with EGraphQLException

use of org.hl7.fhir.utilities.graphql.EGraphQLException 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;
}