| /* |
| * 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.mongodb.pcj; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.rya.api.instance.RyaDetailsRepository; |
| import org.apache.rya.api.instance.RyaDetailsRepository.RyaDetailsRepositoryException; |
| import org.apache.rya.indexing.external.tupleSet.ExternalTupleSet; |
| import org.apache.rya.indexing.pcj.matching.provider.AbstractPcjIndexSetProvider; |
| import org.apache.rya.indexing.pcj.storage.PrecomputedJoinStorage; |
| import org.apache.rya.indexing.pcj.storage.PrecomputedJoinStorage.PCJStorageException; |
| import org.apache.rya.indexing.pcj.storage.mongo.MongoPcjDocuments; |
| import org.apache.rya.indexing.pcj.storage.mongo.MongoPcjStorage; |
| import org.apache.rya.mongodb.StatefulMongoDBRdfConfiguration; |
| import org.apache.rya.mongodb.instance.MongoRyaInstanceDetailsRepository; |
| import org.eclipse.rdf4j.query.MalformedQueryException; |
| |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import com.mongodb.MongoClient; |
| |
| /** |
| * Implementation of {@link AbstractPcjIndexSetProvider} for MongoDB. |
| */ |
| public class MongoPcjIndexSetProvider extends AbstractPcjIndexSetProvider { |
| /** |
| * Creates a new {@link MongoPcjIndexSetProvider}. |
| * @param conf - The configuration for this provider. (not null) |
| */ |
| public MongoPcjIndexSetProvider(final StatefulMongoDBRdfConfiguration conf) { |
| super(conf); |
| } |
| |
| /** |
| * Creates a new {@link MongoPcjIndexSetProvider}. |
| * @param conf - The configuration for this provider. |
| * @param indices - The predefined indicies on this provider. |
| * @param client - The {@link MongoClient} used to connect to mongo. |
| */ |
| public MongoPcjIndexSetProvider(final StatefulMongoDBRdfConfiguration conf, final List<ExternalTupleSet> indices) { |
| super(conf, indices); |
| } |
| |
| @Override |
| protected List<ExternalTupleSet> getIndices() throws PcjIndexSetException { |
| try { |
| final StatefulMongoDBRdfConfiguration mongoConf = (StatefulMongoDBRdfConfiguration) conf; |
| final MongoClient client = mongoConf.getMongoClient(); |
| final MongoPcjDocuments pcjDocs = new MongoPcjDocuments(client, mongoConf.getRyaInstanceName()); |
| List<String> documents = null; |
| |
| documents = mongoConf.getPcjTables(); |
| // this maps associates pcj document name with pcj sparql query |
| final Map<String, String> indexDocuments = Maps.newLinkedHashMap(); |
| |
| try(final PrecomputedJoinStorage storage = new MongoPcjStorage(client, mongoConf.getRyaInstanceName())) { |
| |
| final boolean docsProvided = documents != null && !documents.isEmpty(); |
| |
| if (docsProvided) { |
| // if tables provided, associate table name with sparql |
| for (final String doc : documents) { |
| indexDocuments.put(doc, storage.getPcjMetadata(doc).getSparql()); |
| } |
| } else if (hasRyaDetails()) { |
| // If this is a newer install of Rya, and it has PCJ Details, then |
| // use those. |
| final List<String> ids = storage.listPcjs(); |
| for (final String pcjId : ids) { |
| indexDocuments.put(pcjId, storage.getPcjMetadata(pcjId).getSparql()); |
| } |
| } else { |
| // Otherwise figure it out by getting document IDs. |
| documents = pcjDocs.listPcjDocuments(); |
| for (final String pcjId : documents) { |
| if (pcjId.startsWith("INDEX")) { |
| indexDocuments.put(pcjId, pcjDocs.getPcjMetadata(pcjId).getSparql()); |
| } |
| } |
| } |
| } |
| |
| final List<ExternalTupleSet> index = Lists.newArrayList(); |
| if (indexDocuments.isEmpty()) { |
| log.info("No Index found"); |
| } else { |
| for (final String pcjID : indexDocuments.keySet()) { |
| final String indexSparqlString = indexDocuments.get(pcjID); |
| index.add(new MongoPcjQueryNode(indexSparqlString, pcjID, pcjDocs)); |
| } |
| } |
| return index; |
| } catch (final PCJStorageException | MalformedQueryException e) { |
| throw new PcjIndexSetException("Failed to get indicies for this PCJ index.", e); |
| } |
| } |
| |
| private boolean hasRyaDetails() { |
| final StatefulMongoDBRdfConfiguration mongoConf = (StatefulMongoDBRdfConfiguration) conf; |
| final RyaDetailsRepository detailsRepo = new MongoRyaInstanceDetailsRepository(mongoConf.getMongoClient(), mongoConf.getRyaInstanceName()); |
| try { |
| detailsRepo.getRyaInstanceDetails(); |
| return true; |
| } catch (final RyaDetailsRepositoryException e) { |
| return false; |
| } |
| } |
| } |