| /* |
| * 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.benchmark.periodic; |
| |
| import java.time.ZonedDateTime; |
| import java.time.format.DateTimeFormatter; |
| import java.util.List; |
| |
| import javax.xml.datatype.DatatypeConfigurationException; |
| import javax.xml.datatype.DatatypeFactory; |
| |
| import org.eclipse.rdf4j.model.Literal; |
| import org.eclipse.rdf4j.model.Statement; |
| import org.eclipse.rdf4j.model.ValueFactory; |
| import org.eclipse.rdf4j.model.impl.SimpleValueFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.Lists; |
| |
| /** |
| * Generates sets of statements used for benchmarking |
| */ |
| public class BenchmarkStatementGenerator { |
| |
| private static final Logger logger = LoggerFactory.getLogger(BenchmarkStatementGenerator.class); |
| |
| private static final ValueFactory VF = SimpleValueFactory.getInstance(); |
| private final DatatypeFactory dtf; |
| |
| public BenchmarkStatementGenerator() throws DatatypeConfigurationException { |
| dtf = DatatypeFactory.newInstance(); |
| } |
| |
| /** |
| * Generates (numObservationsPerType x numTypes) statements of the form: |
| * |
| * <pre> |
| * urn:obs_n uri:hasTime zonedTime |
| * urn:obs_n uri:hasObsType typePrefix_m |
| * </pre> |
| * |
| * Where the n in urn:obs_n is the ith value in 0 to (numObservationsPerType x numTypes) with an offset specified by |
| * observationOffset, and where m in typePrefix_m is the jth value in 0 to numTypes. |
| * |
| * @param numObservationsPerType - The quantity of observations per type to generate. |
| * @param numTypes - The number of types to generate observations for. |
| * @param typePrefix - The prefix to be used for the type literal in the statement. |
| * @param observationOffset - The offset to be used for determining the value of n in the above statements. |
| * @param zonedTime - The time to be used for all observations generated. |
| * @return A new list of all generated Statements. |
| */ |
| public List<Statement> generate(final long numObservationsPerType, final int numTypes, final String typePrefix, final long observationOffset, final ZonedDateTime zonedTime) { |
| final String time = zonedTime.format(DateTimeFormatter.ISO_INSTANT); |
| final Literal litTime = VF.createLiteral(dtf.newXMLGregorianCalendar(time)); |
| final List<Statement> statements = Lists.newArrayList(); |
| |
| for (long i = 0; i < numObservationsPerType; i++) { |
| for(int j = 0; j < numTypes; j++) { |
| final long observationId = observationOffset + i*numTypes + j; |
| //final String obsId = "urn:obs_" + Long.toHexString(observationId) + "_" + observationId; |
| //final String obsId = "urn:obs_" + observationId; |
| final String obsId = "urn:obs_" + String.format("%020d", observationId); |
| final String type = typePrefix + j; |
| //logger.info(obsId + " " + type + " " + litTime); |
| statements.add(VF.createStatement(VF.createIRI(obsId), VF.createIRI("uri:hasTime"), litTime)); |
| statements.add(VF.createStatement(VF.createIRI(obsId), VF.createIRI("uri:hasObsType"), VF.createLiteral(type))); |
| } |
| } |
| |
| return statements; |
| } |
| } |