| /* |
| * 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; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.net.UnknownHostException; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.rya.api.domain.RyaIRI; |
| import org.apache.rya.indexing.entity.model.Entity; |
| import org.apache.rya.indexing.entity.model.Property; |
| import org.apache.rya.indexing.entity.model.Type; |
| import org.apache.rya.indexing.entity.model.TypedEntity; |
| import org.apache.rya.indexing.entity.storage.EntityStorage; |
| import org.apache.rya.indexing.entity.storage.EntityStorage.EntityStorageException; |
| import org.apache.rya.indexing.entity.storage.mongo.ConvertingCursor; |
| import org.apache.rya.indexing.entity.storage.mongo.MongoEntityStorage; |
| import org.apache.rya.indexing.mongodb.update.RyaObjectStorage.ObjectStorageException; |
| import org.apache.rya.indexing.smarturi.SmartUriAdapter; |
| import org.apache.rya.indexing.smarturi.SmartUriException; |
| import org.apache.rya.indexing.smarturi.SmartUriStorage; |
| import org.apache.rya.mongodb.StatefulMongoDBRdfConfiguration; |
| import org.eclipse.rdf4j.model.IRI; |
| import org.eclipse.rdf4j.model.Value; |
| |
| import com.mongodb.MongoClient; |
| import com.mongodb.MongoException; |
| |
| /** |
| * MongoDB implementation of the Smart URI. |
| */ |
| public class MongoDbSmartUri implements SmartUriStorage { |
| private boolean isInit = false; |
| private final StatefulMongoDBRdfConfiguration conf; |
| private MongoClient mongoClient = null; |
| private EntityStorage entityStorage; |
| |
| /** |
| * Creates a new instance of {@link MongoDbSmartUri}. |
| * @param conf the {@link StatefulMongoDBRdfConfiguration}. (not {@code null}) |
| */ |
| public MongoDbSmartUri(final StatefulMongoDBRdfConfiguration conf) { |
| this.conf = checkNotNull(conf); |
| } |
| |
| @Override |
| public void storeEntity(final RyaIRI subject, final Map<IRI, Value> map) throws SmartUriException { |
| checkInit(); |
| |
| final IRI uri = SmartUriAdapter.serializeUri(subject, map); |
| final Entity entity = SmartUriAdapter.deserializeUriEntity(uri); |
| |
| // Create it. |
| try { |
| entityStorage.create(entity); |
| } catch (final ObjectStorageException e) { |
| throw new SmartUriException("Failed to create entity storage", e); |
| } |
| } |
| |
| @Override |
| public void storeEntity(final Entity entity) throws SmartUriException { |
| checkInit(); |
| |
| // Create it. |
| try { |
| entityStorage.create(entity); |
| } catch (final ObjectStorageException e) { |
| throw new SmartUriException("Failed to create entity storage", e); |
| } |
| } |
| |
| @Override |
| public void updateEntity(final Entity oldEntity, final Entity updatedEntity) throws SmartUriException { |
| checkInit(); |
| |
| // Update it. |
| try { |
| entityStorage.update(oldEntity, updatedEntity); |
| } catch (final ObjectStorageException e) { |
| throw new SmartUriException("Failed to update entity", e); |
| } |
| } |
| |
| @Override |
| public Entity queryEntity(final RyaIRI subject) throws SmartUriException { |
| checkInit(); |
| |
| // Query it. |
| try { |
| final Optional<Entity> resultEntity = entityStorage.get(subject); |
| return resultEntity.get(); |
| } catch (final ObjectStorageException e) { |
| throw new SmartUriException("Failed to query entity storage", e); |
| } |
| } |
| |
| @Override |
| public ConvertingCursor<TypedEntity> queryEntity(final Type type, final Map<IRI, Value> map) throws SmartUriException { |
| checkInit(); |
| |
| // Query it. |
| try { |
| final Set<Property> properties = SmartUriAdapter.mapToProperties(map); |
| final ConvertingCursor<TypedEntity> cursor = entityStorage.search(Optional.empty(), type, properties); |
| return cursor; |
| } catch (final EntityStorageException e) { |
| throw new SmartUriException("Failed to query entity storage", e); |
| } |
| } |
| |
| private void checkInit() throws SmartUriException { |
| if (!isInit) { |
| try { |
| setupClient(conf); |
| } catch (final UnknownHostException | MongoException | EntityStorageException e) { |
| throw new SmartUriException("Failed to setup MongoDB client", e); |
| } |
| } |
| } |
| |
| /** |
| * Setup the MongoDB client. |
| * @param conf the {@link Configuration}. |
| * @throws UnknownHostException |
| * @throws MongoException |
| * @throws EntityStorageException |
| */ |
| private void setupClient(final StatefulMongoDBRdfConfiguration conf) throws UnknownHostException, MongoException, EntityStorageException { |
| mongoClient = conf.getMongoClient(); |
| entityStorage = new MongoEntityStorage(mongoClient, conf.getRyaInstanceName()); |
| isInit = true; |
| } |
| |
| /** |
| * @return the {@link EntityStorage}. |
| */ |
| public EntityStorage getEntityStorage() { |
| return entityStorage; |
| } |
| } |