| /* |
| * 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.accumulo; |
| |
| import java.util.Properties; |
| |
| /** |
| * This is a concrete extension of the |
| * {@link AbstractAccumuloRdfConfigurationBuilder} class which builds an |
| * {@link AccumuloRdfConfiguration} object. This builder creates an |
| * AccumuloRdfConfiguratio object and sets all of the parameters required to |
| * connect to an Accumulo Rya instance. |
| * |
| */ |
| public class AccumuloRdfConfigurationBuilder |
| extends AbstractAccumuloRdfConfigurationBuilder<AccumuloRdfConfigurationBuilder, AccumuloRdfConfiguration> { |
| |
| /** |
| * Creates an AccumuloRdfConfiguration object from a Properties file. This |
| * method assumes that all values in the Properties file are Strings and |
| * that the Properties file uses the keys below. See |
| * accumulo/rya/src/test/resources/properties/rya.properties for an example. |
| * <br> |
| * <ul> |
| * <li>"accumulo.auths" - String of Accumulo authorizations. Default is |
| * empty String. |
| * <li>"accumulo.visibilities" - String of Accumulo visibilities assigned to |
| * ingested triples. |
| * <li>"accumulo.instance" - Accumulo instance name (required) |
| * <li>"accumulo.user" - Accumulo user (required) |
| * <li>"accumulo.password" - Accumulo password (required) |
| * <li>"accumulo.rya.prefix" - Prefix for Accumulo backed Rya instance. |
| * Default is "rya_" |
| * <li>"accumulo.zookeepers" - Zookeepers for underlying Accumulo instance |
| * (required if not using Mock) |
| * <li>"use.mock" - Use a MockAccumulo instance as back-end for Rya |
| * instance. Default is false. |
| * <li>"use.prefix.hashing" - Use prefix hashing for triples. Helps avoid |
| * hot-spotting. Default is false. |
| * <li>"use.count.stats" - Use triple pattern cardinalities for query |
| * optimization. Default is false. |
| * <li>"use.join.selectivity" - Use join selectivity for query optimization. |
| * Default is false. |
| * <li>"use.display.plan" - Display query plan during evaluation. Useful for |
| * debugging. Default is true. |
| * <li>"use.inference" - Use backward chaining inference during query |
| * evaluation. Default is false. |
| * </ul> |
| * <br> |
| * |
| * @param props |
| * - Properties file containing Accumulo specific configuration |
| * parameters |
| * @return AccumumuloRdfConfiguration with properties set |
| */ |
| public static AccumuloRdfConfigurationBuilder fromProperties(Properties props) { |
| AccumuloRdfConfigurationBuilder builder = new AccumuloRdfConfigurationBuilder() // |
| .setAuths(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_AUTHS, "")) // |
| .setRyaPrefix(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_RYA_PREFIX, "rya_"))// |
| .setVisibilities(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_VISIBILITIES, "")) |
| .setUseInference( |
| getBoolean(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.USE_INFERENCE, "false")))// |
| .setDisplayQueryPlan(getBoolean( |
| props.getProperty(AbstractAccumuloRdfConfigurationBuilder.USE_DISPLAY_QUERY_PLAN, "true")))// |
| .setAccumuloUser(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_USER)) // |
| .setAccumuloInstance(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_INSTANCE))// |
| .setAccumuloZooKeepers(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_ZOOKEEPERS))// |
| .setAccumuloPassword(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.ACCUMULO_PASSWORD))// |
| .setUseMockAccumulo(getBoolean( |
| props.getProperty(AbstractAccumuloRdfConfigurationBuilder.USE_MOCK_ACCUMULO, "false")))// |
| .setUseAccumuloPrefixHashing(getBoolean( |
| props.getProperty(AbstractAccumuloRdfConfigurationBuilder.USE_PREFIX_HASHING, "false")))// |
| .setUseCompositeCardinality( |
| getBoolean(props.getProperty(AbstractAccumuloRdfConfigurationBuilder.USE_COUNT_STATS, "false")))// |
| .setUseJoinSelectivity(getBoolean( |
| props.getProperty(AbstractAccumuloRdfConfigurationBuilder.USE_JOIN_SELECTIVITY, "false"))); |
| return builder; |
| } |
| |
| @Override |
| protected AccumuloRdfConfigurationBuilder confBuilder() { |
| return this; |
| } |
| |
| @Override |
| protected AccumuloRdfConfiguration createConf() { |
| return new AccumuloRdfConfiguration(); |
| } |
| |
| } |