io.telicent.jena.graphql.fetchers.QuadsFetcher Maven / Gradle / Ivy

Go to download
/**
 * Copyright (C) Telicent Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */
package io.telicent.jena.graphql.fetchers;

import graphql.schema.DataFetcher;
import graphql.schema.DataFetchingEnvironment;
import io.telicent.jena.graphql.schemas.CoreSchema;
import io.telicent.jena.graphql.utils.NodeFilter;
import org.apache.jena.graph.Node;
import org.apache.jena.sparql.core.DatasetGraph;
import org.apache.jena.sparql.core.Quad;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.stream.Collectors;

/**
 * A GraphQL Data Fetcher that fetches quads
 */
public class QuadsFetcher implements DataFetcher> {

    /**
     * Creates a new Quads Fetcher that fetches quads from an underlying RDF dataset
     */
    public QuadsFetcher() {

    }

    @Override
    public List