Examples with ExecutionContext graphql.execution.ExecutionContext used on opensource projects

Example 1 with ExecutionContext

use of graphql.execution.ExecutionContext in project timbuctoo by HuygensING.

the class SerializerExecutionStrategy method execute.

@Override
public CompletableFuture<ExecutionResult> execute(ExecutionContext executionContext, ExecutionStrategyParameters parameters) throws NonNullableFieldWasNullException {
    Map<String, java.util.List<Field>> fields = parameters.fields();
    GraphQLObjectType parentType = parameters.typeInfo().castType(GraphQLObjectType.class);
    return super.execute(executionContext, parameters).thenApply(sourceResult -> {
        Map<String, Object> data = sourceResult.getData();
        if (parameters.source() instanceof TypedValue) {
            String value = ((TypedValue) parameters.source()).getValue();
            String typename = ((TypedValue) parameters.source()).getType();
            Value result;
            if (value == null) {
                result = null;
            } else if (data.containsKey("__typename")) {
                result = Value.create(value, typename, (String) data.get("__typename"));
            } else {
                result = Value.create(value, typename);
            }
            return new ExecutionResultImpl(result, sourceResult.getErrors(), sourceResult.getExtensions());
        } else if (parameters.source() instanceof SubjectReference) {
            final String uri = ((SubjectReference) parameters.source()).getSubjectUri();
            final Set<String> types = ((SubjectReference) parameters.source()).getTypes();
            final String graphqlType = getDirectiveArgument(parentType, "rdfType", "uri").orElse(null);
            String type;
            if (graphqlType != null && types.contains(graphqlType)) {
                type = graphqlType;
            } else {
                Optional<String> firstType = types.stream().sorted().findFirst();
                if (firstType.isPresent()) {
                    type = firstType.get();
                } else {
                    LOG.error("No type present on " + uri + ". Expected at least TIM_UNKNOWN");
                    type = RdfConstants.UNKNOWN;
                }
            }
            LinkedHashMap<PredicateInfo, Serializable> copy = new LinkedHashMap<>();
            for (Map.Entry<String, Object> entry : data.entrySet()) {
                final String graphqlFieldName = entry.getKey();
                final GraphQLFieldDefinition fieldDesc = parentType.getFieldDefinition(entry.getKey());
                Optional<String> predicateUri = getDirectiveArgument(fieldDesc, "rdf", "predicate");
                Optional<Direction> direction = getDirectiveArgument(fieldDesc, "rdf", "direction").map(Direction::valueOf);
                final PredicateInfo predicateInfo;
                predicateInfo = predicateUri.map(predUri -> PredicateInfo.predicateInfo(graphqlFieldName, predUri, direction.orElse(Direction.OUT))).orElseGet(() -> PredicateInfo.predicateInfo(graphqlFieldName, null, Direction.OUT));
                if (entry.getValue() == null || entry.getValue() instanceof Serializable) {
                    copy.put(predicateInfo, (Serializable) entry.getValue());
                } else {
                    copy.put(predicateInfo, Value.fromRawJavaType(entry.getValue()));
                }
            }
            return new ExecutionResultImpl(Entity.entity(uri, type, copy), sourceResult.getErrors(), sourceResult.getExtensions());
        } else if (parameters.source() instanceof PaginatedList) {
            PaginatedList<? extends DatabaseResult> source = (PaginatedList) parameters.source();
            return new ExecutionResultImpl(serializableList(source.getPrevCursor().orElse(null), source.getNextCursor().orElse(null), ((GraphqlIntrospectionList) data.get("items")).getItems()), sourceResult.getErrors(), sourceResult.getExtensions());
        } else if (executionContext.getGraphQLSchema().getQueryType() == parentType) {
            return new ExecutionResultImpl(QueryContainer.queryContainer(sourceResult.getData()), sourceResult.getErrors(), sourceResult.getExtensions());
        } else {
            LinkedHashMap<String, Serializable> copy = new LinkedHashMap<>();
            for (Map.Entry<String, Object> entry : data.entrySet()) {
                if (entry.getValue() == null || entry.getValue() instanceof Serializable) {
                    copy.put(entry.getKey(), (Serializable) entry.getValue());
                } else {
                    copy.put(entry.getKey(), GraphqlIntrospectionValue.fromRawJavaType(entry.getValue()));
                }
            }
            return new ExecutionResultImpl(graphqlIntrospectionObject(copy), sourceResult.getErrors(), sourceResult.getExtensions());
        }
    });
}