Examples with RelationDataFetcher nl.knaw.huygens.timbuctoo.v5.graphql.datafetchers.berkeleydb.datafetchers.RelationDataFetcher used on opensource projects

Example 1 with RelationDataFetcher

use of nl.knaw.huygens.timbuctoo.v5.graphql.datafetchers.berkeleydb.datafetchers.RelationDataFetcher in project timbuctoo by HuygensING.

the class RdfWiringFactory method getDataFetcher.

@Override
public DataFetcher getDataFetcher(FieldWiringEnvironment environment) {
    if (environment.getFieldDefinition().getDirective("passThrough") != null) {
        return DataFetchingEnvironment::getSource;
    } else if (environment.getFieldDefinition().getDirective("related") != null) {
        final Directive directive = environment.getFieldDefinition().getDirective("related");
        String source = ((StringValue) directive.getArgument("source").getValue()).getValue();
        String predicate = ((StringValue) directive.getArgument("predicate").getValue()).getValue();
        String direction = ((StringValue) directive.getArgument("direction").getValue()).getValue();
        return new CollectionFetcherWrapper(argumentsHelper, new RelationsOfSubjectDataFetcher(source, predicate, Direction.valueOf(direction)));
    } else if (environment.getFieldDefinition().getDirective("fromCollection") != null) {
        final Directive directive = environment.getFieldDefinition().getDirective("fromCollection");
        String uri = ((StringValue) directive.getArgument("uri").getValue()).getValue();
        boolean listAll = ((BooleanValue) directive.getArgument("listAll").getValue()).isValue();
        if (listAll) {
            return new CollectionFetcherWrapper(argumentsHelper, new CollectionDataFetcher(uri));
        } else {
            return lookupFetcher;
        }
    } else if (environment.getFieldDefinition().getDirective("rdf") != null) {
        final Directive directive = environment.getFieldDefinition().getDirective("rdf");
        String uri = ((StringValue) directive.getArgument("predicate").getValue()).getValue();
        Direction direction = valueOf(((StringValue) directive.getArgument("direction").getValue()).getValue());
        boolean isList = ((BooleanValue) directive.getArgument("isList").getValue()).isValue();
        boolean isObject = ((BooleanValue) directive.getArgument("isObject").getValue()).isValue();
        boolean isValue = ((BooleanValue) directive.getArgument("isValue").getValue()).isValue();
        if (isObject && isValue) {
            return new DataFetcherWrapper(argumentsHelper, isList, new UnionDataFetcher(uri, direction));
        } else {
            if (isObject) {
                return new DataFetcherWrapper(argumentsHelper, isList, new RelationDataFetcher(uri, direction));
            } else {
                return new DataFetcherWrapper(argumentsHelper, isList, new TypedLiteralDataFetcher(uri));
            }
        }
    } else if (environment.getFieldDefinition().getDirective("uri") != null) {
        return uriFetcher;
    } else if (environment.getFieldDefinition().getDirective("dataSet") != null) {
        final Directive directive = environment.getFieldDefinition().getDirective("dataSet");
        String userId = ((StringValue) directive.getArgument("userId").getValue()).getValue();
        String dataSetId = ((StringValue) directive.getArgument("dataSetId").getValue()).getValue();
        final DataSet dataSet = dataSetRepository.unsafeGetDataSetWithoutCheckingPermissions(userId, dataSetId).orElse(null);
        return dataFetchingEnvironment -> new DatabaseResult() {

            @Override
            public DataSet getDataSet() {
                return dataSet;
            }
        };
    } else if (environment.getFieldDefinition().getDirective("entityTitle") != null) {
        return entityTitleFetcher;
    } else if (environment.getFieldDefinition().getDirective("entityDescription") != null) {
        return entityDescriptionFetcher;
    } else if (environment.getFieldDefinition().getDirective("entityImage") != null) {
        return entityImageFetcher;
    }
    return null;
}