Github user amihalik commented on a diff in the pull request: https://github.com/apache/incubator-rya/pull/188#discussion_r129999058 --- Diff: extras/indexing/src/main/java/org/apache/rya/api/client/accumulo/AccumuloExecuteSparqlQuery.java --- @@ -0,0 +1,150 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 org.apache.rya.api.client.accumulo; + +import static java.util.Objects.requireNonNull; + +import java.text.DecimalFormat; + +import org.apache.accumulo.core.client.AccumuloException; +import org.apache.accumulo.core.client.AccumuloSecurityException; +import org.apache.accumulo.core.client.Connector; +import org.apache.log4j.Logger; +import org.apache.rya.accumulo.AccumuloRdfConfiguration; +import org.apache.rya.api.client.ExecuteSparqlQuery; +import org.apache.rya.api.client.InstanceDoesNotExistException; +import org.apache.rya.api.client.InstanceExists; +import org.apache.rya.api.client.LoadStatementsFile; +import org.apache.rya.api.client.RyaClientException; +import org.apache.rya.api.persist.RyaDAOException; +import org.apache.rya.rdftriplestore.inference.InferenceEngineException; +import org.apache.rya.sail.config.RyaSailFactory; +import org.openrdf.query.MalformedQueryException; +import org.openrdf.query.QueryEvaluationException; +import org.openrdf.query.QueryLanguage; +import org.openrdf.query.TupleQuery; +import org.openrdf.query.TupleQueryResult; +import org.openrdf.repository.RepositoryException; +import org.openrdf.repository.sail.SailRepository; +import org.openrdf.repository.sail.SailRepositoryConnection; +import org.openrdf.sail.Sail; +import org.openrdf.sail.SailException; + +import edu.umd.cs.findbugs.annotations.DefaultAnnotation; +import edu.umd.cs.findbugs.annotations.NonNull; + +/** + * An Accumulo implementation of the {@link LoadStatementsFile} command. + */ +@DefaultAnnotation(NonNull.class) +public class AccumuloExecuteSparqlQuery extends AccumuloCommand implements ExecuteSparqlQuery { + private static final Logger log = Logger.getLogger(AccumuloExecuteSparqlQuery.class); + + private final InstanceExists instanceExists; + + /** + * Constructs an instance of {@link AccumuloExecuteSparqlQuery}. + * + * @param connectionDetails - Details about the values that were used to create + * the connector to the cluster. (not null) + * @param connector - Provides programmatic access to the instance of Accumulo + * that hosts Rya instance. (not null) + */ + public AccumuloExecuteSparqlQuery(final AccumuloConnectionDetails connectionDetails, final Connector connector) { + super(connectionDetails, connector); + instanceExists = new AccumuloInstanceExists(connectionDetails, connector); + } + + + @Override + public String executeSparqlQuery(final String ryaInstanceName, final String sparqlQuery) + throws InstanceDoesNotExistException, RyaClientException { + requireNonNull(ryaInstanceName); + requireNonNull(sparqlQuery); + + // Ensure the Rya Instance exists. + if(!instanceExists.exists(ryaInstanceName)) { + throw new InstanceDoesNotExistException(String.format("There is no Rya instance named '%s'.", ryaInstanceName)); + } + + + Sail sail = null; + SailRepository sailRepo = null; + SailRepositoryConnection sailRepoConn = null; + + try { + // Get a Sail object that is connected to the Rya instance. + final AccumuloRdfConfiguration ryaConf = getAccumuloConnectionDetails().buildAccumuloRdfConfiguration(ryaInstanceName); + sail = RyaSailFactory.getInstance(ryaConf); + + // Load the file. --- End diff -- ?
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