| /* |
| * 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.search.join; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.solr.common.util.NamedList; |
| import org.apache.solr.request.SolrQueryRequest; |
| import org.apache.solr.search.join.BlockJoinFieldFacetAccumulator.AggregatableDocIter; |
| |
| /** |
| * For each collected parent document creates matched block, which is a docSet with matched children and parent doc |
| * itself. Then updates each BlockJoinFieldFacetAccumulator with the created matched block. |
| */ |
| class BlockJoinFacetAccsHolder { |
| private BlockJoinFieldFacetAccumulator[] blockJoinFieldFacetAccumulators; |
| private boolean firstSegment = true; |
| |
| BlockJoinFacetAccsHolder(SolrQueryRequest req) throws IOException { |
| String[] facetFieldNames = BlockJoinFacetComponentSupport.getChildFacetFields(req); |
| assert facetFieldNames != null; |
| blockJoinFieldFacetAccumulators = new BlockJoinFieldFacetAccumulator[facetFieldNames.length]; |
| for (int i = 0; i < facetFieldNames.length; i++) { |
| blockJoinFieldFacetAccumulators[i] = new BlockJoinFieldFacetAccumulator(facetFieldNames[i], req.getSearcher()); |
| } |
| } |
| |
| |
| protected void doSetNextReader(LeafReaderContext context) throws IOException { |
| for (BlockJoinFieldFacetAccumulator blockJoinFieldFacetAccumulator : blockJoinFieldFacetAccumulators) { |
| if(!firstSegment){ |
| blockJoinFieldFacetAccumulator.migrateGlobal(); |
| } |
| blockJoinFieldFacetAccumulator.setNextReader(context); |
| } |
| firstSegment = false; |
| } |
| |
| public void finish() throws IOException { |
| for (BlockJoinFieldFacetAccumulator blockJoinFieldFacetAccumulator : blockJoinFieldFacetAccumulators) { |
| blockJoinFieldFacetAccumulator.migrateGlobal(); |
| } |
| } |
| |
| /** is not used |
| protected int[] includeParentDoc(int parent) { |
| final int[] docNums = ArrayUtil.grow(childTracking.getChildDocs(), childTracking.getChildCount()+1); |
| childTracking.setChildDocs(docNums); // we include parent into block, I'm not sure whether it makes sense |
| docNums[childTracking.getChildCount()]=parent; |
| return docNums; |
| }*/ |
| |
| protected void countFacets(final AggregatableDocIter iter) throws IOException { |
| for (BlockJoinFieldFacetAccumulator blockJoinFieldFacetAccumulator : blockJoinFieldFacetAccumulators) { |
| blockJoinFieldFacetAccumulator.updateCountsWithMatchedBlock( iter); |
| } |
| } |
| |
| NamedList getFacets() throws IOException { |
| NamedList<NamedList<Integer>> facets = new NamedList<>(blockJoinFieldFacetAccumulators.length); |
| for (BlockJoinFieldFacetAccumulator state : blockJoinFieldFacetAccumulators) { |
| facets.add(state.getFieldName(), state.getFacetValue()); |
| } |
| return facets; |
| } |
| |
| |
| } |