| /* |
| * 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.indexing.pcj.fluo.client.command; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.fluo.api.client.FluoClient; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.rya.indexing.pcj.fluo.api.InsertTriples; |
| import org.apache.rya.indexing.pcj.fluo.client.PcjAdminClientCommand; |
| import org.apache.rya.indexing.pcj.fluo.client.util.FluoLoader; |
| import org.apache.rya.rdftriplestore.RyaSailRepository; |
| import org.apache.rya.rdftriplestore.utils.RdfFormatUtils; |
| import org.eclipse.rdf4j.rio.RDFParser; |
| import org.eclipse.rdf4j.rio.Rio; |
| |
| import com.beust.jcommander.JCommander; |
| import com.beust.jcommander.Parameter; |
| import com.beust.jcommander.ParameterException; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * A command that loads the contents of an NTriple file into the Fluo application. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| public class LoadTriplesCommand implements PcjAdminClientCommand { |
| private static final Logger log = LogManager.getLogger(LoadTriplesCommand.class); |
| |
| /** |
| * Command line parameters that are used by this command to configure itself. |
| */ |
| private static final class Parameters { |
| @Parameter(names = "--triplesFile", required = true, description = "The RDF file of statemetns to load into the Fluo app.") |
| private String nTriplesFile; |
| } |
| |
| @Override |
| public String getCommand() { |
| return "load-triples"; |
| } |
| |
| @Override |
| public String getDescription() { |
| return "Load RDF Triples into the Fluo app"; |
| } |
| |
| @Override |
| public String getUsage() { |
| final JCommander parser = new JCommander(new Parameters()); |
| |
| final StringBuilder usage = new StringBuilder(); |
| parser.usage(usage); |
| return usage.toString(); |
| } |
| |
| @Override |
| public void execute(final Connector accumulo, final String ryaTablePrefix, final RyaSailRepository rya, final FluoClient fluo, final String[] args) throws ArgumentsException, ExecutionException { |
| checkNotNull(accumulo); |
| checkNotNull(fluo); |
| checkNotNull(args); |
| |
| log.trace("Executing the Load Triples Command..."); |
| |
| // Parse the command line arguments. |
| final Parameters params = new Parameters(); |
| try { |
| new JCommander(params, args); |
| } catch(final ParameterException e) { |
| throw new ArgumentsException("Could not load the Triples file because of invalid command line parameters.", e); |
| } |
| |
| // Iterate over the Statements that are in the input file and write them to Fluo. |
| log.trace("Loading RDF Statements from the Triples file '" + params.nTriplesFile + "'."); |
| final Path triplesPath = Paths.get( params.nTriplesFile ); |
| |
| try { |
| final RDFParser parser = Rio.createParser(RdfFormatUtils.forFileName(triplesPath.getFileName().toString())); |
| final FluoLoader loader = new FluoLoader(fluo, new InsertTriples()); |
| parser.setRDFHandler(loader); |
| parser.parse(Files.newInputStream(triplesPath), triplesPath.toUri().toString()); |
| } catch (final Exception e) { |
| throw new ExecutionException("Could not load the RDF file into the Fluo app.", e); |
| } |
| |
| log.trace("Finished executing the Load Triples Command."); |
| } |
| } |