| /* |
| * 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.solr.analytics; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.search.DocIdSet; |
| import org.apache.lucene.search.DocIdSetIterator; |
| import org.apache.solr.analytics.AnalyticsRequestManager.StreamingInfo; |
| import org.apache.solr.analytics.facet.AbstractSolrQueryFacet.FacetValueQueryExecuter; |
| import org.apache.solr.analytics.facet.StreamingFacet; |
| import org.apache.solr.analytics.function.ReductionCollectionManager; |
| import org.apache.solr.request.SolrQueryRequest; |
| import org.apache.solr.search.Filter; |
| import org.apache.solr.search.SolrIndexSearcher; |
| |
| public class AnalyticsDriver { |
| |
| /** |
| * Drive the collection of reduction data. This includes overall data as well as faceted data. |
| * |
| * @param manager of the request to drive |
| * @param searcher the results of the query |
| * @param filter that represents the overall query |
| * @param queryRequest used for the search request |
| * @throws IOException if an error occurs while reading from Solr |
| */ |
| public static void drive(AnalyticsRequestManager manager, SolrIndexSearcher searcher, Filter filter, SolrQueryRequest queryRequest) throws IOException { |
| StreamingInfo streamingInfo = manager.getStreamingFacetInfo(); |
| Iterable<StreamingFacet> streamingFacets = streamingInfo.streamingFacets; |
| ReductionCollectionManager collectionManager = streamingInfo.streamingCollectionManager; |
| |
| Iterable<FacetValueQueryExecuter> facetExecuters = manager.getFacetExecuters(filter, queryRequest); |
| |
| // Streaming phase (Overall results & Value/Pivot Facets) |
| // Loop through all documents and collect reduction data for streaming facets and overall results |
| if (collectionManager.needsCollection()) { |
| List<LeafReaderContext> contexts = searcher.getTopReaderContext().leaves(); |
| for (int leafNum = 0; leafNum < contexts.size(); leafNum++) { |
| LeafReaderContext context = contexts.get(leafNum); |
| DocIdSet dis = filter.getDocIdSet(context, null); // solr docsets already exclude any deleted docs |
| if (dis == null) { |
| continue; |
| } |
| DocIdSetIterator disi = dis.iterator(); |
| if (disi != null) { |
| collectionManager.doSetNextReader(context); |
| int doc = disi.nextDoc(); |
| while( doc != DocIdSetIterator.NO_MORE_DOCS){ |
| // Add a document to the statistics being generated |
| collectionManager.collect(doc); |
| streamingFacets.forEach( facet -> facet.addFacetValueCollectionTargets() ); |
| collectionManager.apply(); |
| doc = disi.nextDoc(); |
| } |
| } |
| } |
| } |
| |
| // Executing phase (Query/Range Facets) |
| // Send additional Solr Queries to compute facet values |
| for (FacetValueQueryExecuter executer : facetExecuters) { |
| executer.execute(searcher); |
| } |
| } |
| } |