| /** |
| * 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.geotemporal.mongo; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkState; |
| import static java.util.Objects.requireNonNull; |
| |
| import java.io.IOException; |
| import java.util.Optional; |
| import java.util.concurrent.atomic.AtomicReference; |
| import java.util.regex.Matcher; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.log4j.Logger; |
| import org.apache.rya.api.domain.RyaStatement; |
| import org.apache.rya.api.domain.RyaURI; |
| import org.apache.rya.api.resolver.RyaToRdfConversions; |
| import org.apache.rya.indexing.GeoConstants; |
| import org.apache.rya.indexing.TemporalInstant; |
| import org.apache.rya.indexing.TemporalInstantRfc3339; |
| import org.apache.rya.indexing.TemporalInterval; |
| import org.apache.rya.indexing.accumulo.ConfigUtils; |
| import org.apache.rya.indexing.accumulo.geo.GeoParseUtils; |
| import org.apache.rya.indexing.geotemporal.GeoTemporalIndexer; |
| import org.apache.rya.indexing.geotemporal.model.Event; |
| import org.apache.rya.indexing.geotemporal.storage.EventStorage; |
| import org.apache.rya.indexing.mongodb.AbstractMongoIndexer; |
| import org.apache.rya.indexing.mongodb.IndexingException; |
| import org.apache.rya.indexing.mongodb.geo.GmlParser; |
| import org.apache.rya.mongodb.StatefulMongoDBRdfConfiguration; |
| import org.joda.time.DateTime; |
| import org.eclipse.rdf4j.model.IRI; |
| import org.eclipse.rdf4j.model.Statement; |
| |
| import com.vividsolutions.jts.geom.Geometry; |
| import com.vividsolutions.jts.io.ParseException; |
| |
| /** |
| * Indexer that stores 2 separate statements as one 'Event' entity. |
| * <p> |
| * The statements are required to have the same subject, one must be |
| * a Geo based statement and the other a temporal based statement. |
| * <p> |
| * This indexer is later used when querying for geo/temporal statements |
| * in the format of: |
| * <pre> |
| * {@code |
| * QUERY PARAMS |
| * ?SomeSubject geo:predicate ?Location |
| * ?SomeSubject time:predicate ?Time |
| * Filter(?Location, geoFunction()) |
| * Filter(?Time, temporalFunction()) |
| * } |
| * |
| * The number of filters is not strict, but there must be at least one |
| * query pattern for geo and one for temporal as well as at least one |
| * filter for each type. |
| */ |
| public class MongoGeoTemporalIndexer extends AbstractMongoIndexer<GeoTemporalMongoDBStorageStrategy> implements GeoTemporalIndexer { |
| private static final Logger LOG = Logger.getLogger(MongoGeoTemporalIndexer.class); |
| public static final String GEO_TEMPORAL_COLLECTION = "geo_temporal"; |
| |
| private final AtomicReference<EventStorage> events = new AtomicReference<>(); |
| |
| @Override |
| public void init() { |
| initCore(); |
| events.set(getEventStorage()); |
| |
| predicates = ConfigUtils.getGeoPredicates(conf); |
| predicates.addAll(ConfigUtils.getTemporalPredicates(conf)); |
| storageStrategy = new GeoTemporalMongoDBStorageStrategy(); |
| } |
| |
| @Override |
| public void setConf(final Configuration conf) { |
| requireNonNull(conf); |
| checkArgument(conf instanceof StatefulMongoDBRdfConfiguration, |
| "The configuration must be of type StatefulMongoDBRdfConfiguration but you provided: " |
| + conf.getClass().getSimpleName()); |
| super.conf = (StatefulMongoDBRdfConfiguration) conf; |
| } |
| |
| @Override |
| public void storeStatement(final RyaStatement ryaStatement) throws IOException { |
| requireNonNull(ryaStatement); |
| |
| try { |
| updateEvent(ryaStatement.getSubject(), ryaStatement); |
| } catch (IndexingException | ParseException e) { |
| throw new IOException("Failed to update the Entity index.", e); |
| } |
| } |
| |
| @Override |
| public void deleteStatement(final RyaStatement statement) throws IOException { |
| requireNonNull(statement); |
| final RyaURI subject = statement.getSubject(); |
| try { |
| final EventStorage eventStore = events.get(); |
| checkState(events != null, "Must set this indexers configuration before storing statements."); |
| |
| new EventUpdater(eventStore).update(subject, old -> { |
| final Event.Builder updated; |
| if(!old.isPresent()) { |
| return Optional.empty(); |
| } else { |
| updated = Event.builder(old.get()); |
| } |
| |
| final Event currentEvent = updated.build(); |
| final IRI pred = statement.getObject().getDataType(); |
| if((pred.equals(GeoConstants.GEO_AS_WKT) || pred.equals(GeoConstants.GEO_AS_GML) || |
| pred.equals(GeoConstants.XMLSCHEMA_OGC_WKT) || pred.equals(GeoConstants.XMLSCHEMA_OGC_GML)) |
| && currentEvent.getGeometry().isPresent()) { |
| //is geo and needs to be removed. |
| try { |
| if(currentEvent.getGeometry().get().equals(GeoParseUtils.getGeometry(RyaToRdfConversions.convertStatement(statement), new GmlParser()))) { |
| updated.setGeometry(null); |
| } |
| } catch (final Exception e) { |
| LOG.debug("Unable to parse the stored geometry."); |
| } |
| } else { |
| //is time |
| final String dateTime = statement.getObject().getData(); |
| final Matcher matcher = TemporalInstantRfc3339.PATTERN.matcher(dateTime); |
| if (matcher.find()) { |
| final TemporalInterval interval = TemporalInstantRfc3339.parseInterval(dateTime); |
| if(currentEvent.getInterval().get().equals(interval)) { |
| updated.setTemporalInterval(null); |
| } |
| } else { |
| final TemporalInstant instant = new TemporalInstantRfc3339(DateTime.parse(dateTime)); |
| if(currentEvent.getInstant().get().equals(instant)) { |
| updated.setTemporalInstant(null); |
| } |
| } |
| } |
| return Optional.of(updated.build()); |
| }); |
| } catch (final IndexingException e) { |
| throw new IOException("Failed to update the Entity index.", e); |
| } |
| } |
| |
| private void updateEvent(final RyaURI subject, final RyaStatement statement) throws IndexingException, ParseException { |
| final EventStorage eventStore = events.get(); |
| checkState(events != null, "Must set this indexers configuration before storing statements."); |
| |
| new EventUpdater(eventStore).update(subject, old -> { |
| final Event.Builder updated; |
| if(!old.isPresent()) { |
| updated = Event.builder() |
| .setSubject(subject); |
| } else { |
| updated = Event.builder(old.get()); |
| } |
| |
| final IRI pred = statement.getObject().getDataType(); |
| if(pred.equals(GeoConstants.GEO_AS_WKT) || pred.equals(GeoConstants.GEO_AS_GML) || |
| pred.equals(GeoConstants.XMLSCHEMA_OGC_WKT) || pred.equals(GeoConstants.XMLSCHEMA_OGC_GML)) { |
| //is geo |
| try { |
| final Statement geoStatement = RyaToRdfConversions.convertStatement(statement); |
| final Geometry geometry = GeoParseUtils.getGeometry(geoStatement, new GmlParser()); |
| updated.setGeometry(geometry); |
| } catch (final ParseException e) { |
| LOG.error(e.getMessage(), e); |
| } |
| } else { |
| //is time |
| final String dateTime = statement.getObject().getData(); |
| final Matcher matcher = TemporalInstantRfc3339.PATTERN.matcher(dateTime); |
| if (matcher.find()) { |
| final TemporalInterval interval = TemporalInstantRfc3339.parseInterval(dateTime); |
| updated.setTemporalInterval(interval); |
| } else { |
| final TemporalInstant instant = new TemporalInstantRfc3339(DateTime.parse(dateTime)); |
| updated.setTemporalInstant(instant); |
| } |
| } |
| return Optional.of(updated.build()); |
| }); |
| } |
| |
| @Override |
| public String getCollectionName() { |
| return ConfigUtils.getTablePrefix(conf) + GEO_TEMPORAL_COLLECTION; |
| } |
| |
| @Override |
| public EventStorage getEventStorage() { |
| requireNonNull(conf); |
| |
| if(events.get() != null) { |
| return events.get(); |
| } |
| |
| events.set(new MongoEventStorage(conf.getMongoClient(), conf.getRyaInstanceName())); |
| return events.get(); |
| } |
| } |