Java tutorial
package mvm.rya.accumulo.pig; /* * 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. */ import java.io.IOException; import java.util.ArrayList; import java.util.List; import junit.framework.TestCase; import mvm.rya.accumulo.AccumuloRdfConfiguration; import mvm.rya.accumulo.AccumuloRyaDAO; import mvm.rya.api.RdfCloudTripleStoreConstants; import mvm.rya.api.domain.RyaStatement; import mvm.rya.api.domain.RyaType; import mvm.rya.api.domain.RyaURI; import org.apache.accumulo.core.Constants; import org.apache.accumulo.core.client.Connector; import org.apache.accumulo.core.client.admin.SecurityOperations; import org.apache.accumulo.core.client.mock.MockInstance; import org.apache.accumulo.core.security.Authorizations; import org.apache.accumulo.core.security.TablePermission; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.mapreduce.InputFormat; import org.apache.hadoop.mapreduce.InputSplit; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.RecordReader; import org.apache.hadoop.mapreduce.TaskAttemptContext; import org.apache.hadoop.mapreduce.TaskAttemptID; import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl; import org.apache.pig.data.Tuple; import org.openrdf.model.ValueFactory; import org.openrdf.model.impl.ValueFactoryImpl; /** * Created by IntelliJ IDEA. * Date: 4/20/12 * Time: 5:14 PM * To change this template use File | Settings | File Templates. */ public class StatementPatternStorageTest extends TestCase { private String user = "user"; private String pwd = "pwd"; private String instance = "myinstance"; private String tablePrefix = "t_"; private Authorizations auths = Constants.NO_AUTHS; private Connector connector; private AccumuloRyaDAO ryaDAO; private ValueFactory vf = new ValueFactoryImpl(); private String namespace = "urn:test#"; private AccumuloRdfConfiguration conf; @Override public void setUp() throws Exception { super.setUp(); connector = new MockInstance(instance).getConnector(user, pwd.getBytes()); connector.tableOperations().create(tablePrefix + RdfCloudTripleStoreConstants.TBL_SPO_SUFFIX); connector.tableOperations().create(tablePrefix + RdfCloudTripleStoreConstants.TBL_PO_SUFFIX); connector.tableOperations().create(tablePrefix + RdfCloudTripleStoreConstants.TBL_OSP_SUFFIX); connector.tableOperations().create(tablePrefix + RdfCloudTripleStoreConstants.TBL_NS_SUFFIX); SecurityOperations secOps = connector.securityOperations(); secOps.createUser(user, pwd.getBytes(), auths); secOps.grantTablePermission(user, tablePrefix + RdfCloudTripleStoreConstants.TBL_SPO_SUFFIX, TablePermission.READ); secOps.grantTablePermission(user, tablePrefix + RdfCloudTripleStoreConstants.TBL_PO_SUFFIX, TablePermission.READ); secOps.grantTablePermission(user, tablePrefix + RdfCloudTripleStoreConstants.TBL_OSP_SUFFIX, TablePermission.READ); secOps.grantTablePermission(user, tablePrefix + RdfCloudTripleStoreConstants.TBL_NS_SUFFIX, TablePermission.READ); conf = new AccumuloRdfConfiguration(); ryaDAO = new AccumuloRyaDAO(); ryaDAO.setConnector(connector); conf.setTablePrefix(tablePrefix); ryaDAO.setConf(conf); ryaDAO.init(); } @Override public void tearDown() throws Exception { super.tearDown(); connector.tableOperations().delete(tablePrefix + RdfCloudTripleStoreConstants.TBL_SPO_SUFFIX); connector.tableOperations().delete(tablePrefix + RdfCloudTripleStoreConstants.TBL_PO_SUFFIX); connector.tableOperations().delete(tablePrefix + RdfCloudTripleStoreConstants.TBL_OSP_SUFFIX); connector.tableOperations().delete(tablePrefix + RdfCloudTripleStoreConstants.TBL_NS_SUFFIX); } public void testSimplePredicateRange() throws Exception { ryaDAO.add(new RyaStatement(new RyaURI(namespace, "a"), new RyaURI(namespace, "p"), new RyaType("l"))); ryaDAO.add(new RyaStatement(new RyaURI(namespace, "b"), new RyaURI(namespace, "p"), new RyaType("l"))); ryaDAO.add(new RyaStatement(new RyaURI(namespace, "c"), new RyaURI(namespace, "n"), new RyaType("l"))); int count = 0; List<StatementPatternStorage> storages = createStorages("accumulo://" + tablePrefix + "?instance=" + instance + "&user=" + user + "&password=" + pwd + "&predicate=<" + namespace + "p>&mock=true"); for (StatementPatternStorage storage : storages) { while (true) { Tuple next = storage.getNext(); if (next == null) { break; } count++; } } assertEquals(2, count); ryaDAO.destroy(); } public void testContext() throws Exception { ryaDAO.add(new RyaStatement(new RyaURI(namespace, "a"), new RyaURI(namespace, "p"), new RyaType("l1"))); ryaDAO.add(new RyaStatement(new RyaURI(namespace, "a"), new RyaURI(namespace, "p"), new RyaType("l2"), new RyaURI(namespace, "g1"))); int count = 0; List<StatementPatternStorage> storages = createStorages("accumulo://" + tablePrefix + "?instance=" + instance + "&user=" + user + "&password=" + pwd + "&predicate=<" + namespace + "p>&mock=true"); for (StatementPatternStorage storage : storages) { while (true) { Tuple next = storage.getNext(); if (next == null) { break; } count++; } } assertEquals(2, count); count = 0; storages = createStorages("accumulo://" + tablePrefix + "?instance=" + instance + "&user=" + user + "&password=" + pwd + "&predicate=<" + namespace + "p>&context=<" + namespace + "g1>&mock=true"); for (StatementPatternStorage storage : storages) { while (true) { Tuple next = storage.getNext(); if (next == null) { break; } count++; } } assertEquals(1, count); ryaDAO.destroy(); } protected List<StatementPatternStorage> createStorages(String location) throws IOException, InterruptedException { List<StatementPatternStorage> storages = new ArrayList<StatementPatternStorage>(); StatementPatternStorage storage = new StatementPatternStorage(); InputFormat inputFormat = storage.getInputFormat(); Job job = new Job(new Configuration()); storage.setLocation(location, job); List<InputSplit> splits = inputFormat.getSplits(job); assertNotNull(splits); for (InputSplit inputSplit : splits) { storage = new StatementPatternStorage(); job = new Job(new Configuration()); storage.setLocation(location, job); TaskAttemptContext taskAttemptContext = new TaskAttemptContextImpl(job.getConfiguration(), new TaskAttemptID("jtid", 0, false, 0, 0)); RecordReader recordReader = inputFormat.createRecordReader(inputSplit, taskAttemptContext); recordReader.initialize(inputSplit, taskAttemptContext); storage.prepareToRead(recordReader, null); storages.add(storage); } return storages; } }