io.redlink.sdk.util.ModelRepository Maven / Gradle / Ivy

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/**
 * 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.redlink.sdk.util;

import org.openrdf.model.Model;
import org.openrdf.repository.Repository;
import org.openrdf.repository.RepositoryConnection;
import org.openrdf.repository.RepositoryException;
import org.openrdf.repository.sail.SailRepository;
import org.openrdf.sail.Sail;
import org.openrdf.sail.memory.MemoryStore;

/**
 * Provides a simple transformation from a Model into a Repository,
 * for being able to do regular things there, such as SPARQL queries.
 * A bit ugly, since a model is simply a collection of statements;
 * something to discuss with the Sesame people.
 *
 * @author [email protected]
 */
public class ModelRepository extends SailRepository {

    public static ModelRepository create(Model model) throws RepositoryException {
        Sail sail = new MemoryStore();
        Repository repo = new SailRepository(sail);
        repo.initialize();
        RepositoryConnection conn = repo.getConnection();
        conn.begin();
        conn.add(model);
        conn.commit();
        conn.close();
        return new ModelRepository(sail);
    }

    private ModelRepository(Sail sail) {
        super(sail);
    }

}