| package org.apache.rya.accumulo; |
| |
| /* |
| * 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 org.apache.rya.api.RdfCloudTripleStoreConstants; |
| import org.apache.rya.api.resolver.triple.TripleRow; |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.TableExistsException; |
| import org.apache.accumulo.core.client.admin.TableOperations; |
| import org.apache.accumulo.core.data.Key; |
| import org.apache.accumulo.core.data.Value; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import static org.apache.rya.api.RdfCloudTripleStoreConstants.EMPTY_BYTES; |
| |
| /** |
| * Class AccumuloRdfUtils |
| * Date: Mar 1, 2012 |
| * Time: 7:15:54 PM |
| */ |
| public class AccumuloRdfUtils { |
| private static final Log logger = LogFactory.getLog(AccumuloRdfUtils.class); |
| |
| public static void createTableIfNotExist(TableOperations tableOperations, String tableName) throws AccumuloException, AccumuloSecurityException, TableExistsException { |
| boolean tableExists = tableOperations.exists(tableName); |
| if (!tableExists) { |
| logger.debug("Creating accumulo table: " + tableName); |
| tableOperations.create(tableName); |
| } |
| } |
| |
| public static Key from(TripleRow tripleRow) { |
| return new Key(defaultTo(tripleRow.getRow(), EMPTY_BYTES), |
| defaultTo(tripleRow.getColumnFamily(), EMPTY_BYTES), |
| defaultTo(tripleRow.getColumnQualifier(), EMPTY_BYTES), |
| defaultTo(tripleRow.getColumnVisibility(), EMPTY_BYTES), |
| defaultTo(tripleRow.getTimestamp(), Long.MAX_VALUE)); |
| } |
| |
| public static Value extractValue(TripleRow tripleRow) { |
| return new Value(defaultTo(tripleRow.getValue(), EMPTY_BYTES)); |
| } |
| |
| private static byte[] defaultTo(byte[] bytes, byte[] def) { |
| return bytes != null ? bytes : def; |
| } |
| |
| private static Long defaultTo(Long l, Long def) { |
| return l != null ? l : def; |
| } |
| } |