| /* |
| * 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.jackrabbit.oak.plugins.index.lucene.util; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.jackrabbit.oak.plugins.index.search.FieldNames; |
| import org.apache.jackrabbit.oak.spi.query.Filter; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.facet.FacetResult; |
| import org.apache.lucene.facet.FacetsCollector; |
| import org.apache.lucene.facet.FacetsConfig; |
| import org.apache.lucene.facet.LabelAndValue; |
| import org.apache.lucene.facet.sortedset.DefaultSortedSetDocValuesReaderState; |
| import org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetCounts; |
| import org.apache.lucene.facet.sortedset.SortedSetDocValuesReaderState; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.SortedSetDocValues; |
| import org.apache.lucene.search.ScoreDoc; |
| import org.apache.lucene.search.TopDocs; |
| import org.apache.lucene.util.BytesRef; |
| |
| /** |
| * ACL filtered version of {@link SortedSetDocValuesFacetCounts} |
| */ |
| class FilteredSortedSetDocValuesFacetCounts extends SortedSetDocValuesFacetCounts { |
| |
| private final TopDocs docs; |
| private final Filter filter; |
| private final IndexReader reader; |
| private final SortedSetDocValuesReaderState state; |
| |
| public FilteredSortedSetDocValuesFacetCounts(DefaultSortedSetDocValuesReaderState state, FacetsCollector facetsCollector, Filter filter, TopDocs docs) throws IOException { |
| super(state, facetsCollector); |
| this.reader = state.origReader; |
| this.filter = filter; |
| this.docs = docs; |
| this.state = state; |
| } |
| |
| @Override |
| public FacetResult getTopChildren(int topN, String dim, String... path) throws IOException { |
| FacetResult topChildren = super.getTopChildren(topN, dim, path); |
| |
| if (topChildren == null) { |
| return null; |
| } |
| |
| LabelAndValue[] labelAndValues = topChildren.labelValues; |
| |
| for (ScoreDoc scoreDoc : docs.scoreDocs) { |
| labelAndValues = filterFacet(scoreDoc.doc, dim, labelAndValues); |
| } |
| |
| int childCount = labelAndValues.length; |
| Number value = 0; |
| for (LabelAndValue lv : labelAndValues) { |
| value = value.longValue() + lv.value.longValue(); |
| } |
| |
| return new FacetResult(dim, path, value, labelAndValues, childCount); |
| } |
| |
| private LabelAndValue[] filterFacet(int docId, String dimension, LabelAndValue[] labelAndValues) throws IOException { |
| boolean filterd = false; |
| Map<String, Long> newValues = new HashMap<String, Long>(); |
| |
| Document document = reader.document(docId); |
| SortedSetDocValues docValues = state.getDocValues(); |
| docValues.setDocument(docId); |
| |
| // filter using doc values (avoiding requiring stored values) |
| if (!filter.isAccessible(document.getField(FieldNames.PATH).stringValue() + "/" + dimension)) { |
| filterd = true; |
| for (LabelAndValue lv : labelAndValues) { |
| long existingCount = lv.value.longValue(); |
| |
| BytesRef key = new BytesRef(FacetsConfig.pathToString(dimension, new String[]{lv.label})); |
| long l = docValues.lookupTerm(key); |
| if (l >= 0) { |
| if (existingCount > 0) { |
| newValues.put(lv.label, existingCount - 1); |
| } else { |
| if (newValues.containsKey(lv.label)) { |
| newValues.remove(lv.label); |
| } |
| } |
| } |
| } |
| } |
| LabelAndValue[] filteredLVs; |
| if (filterd) { |
| filteredLVs = new LabelAndValue[newValues.size()]; |
| int i = 0; |
| for (Map.Entry<String, Long> entry : newValues.entrySet()) { |
| filteredLVs[i] = new LabelAndValue(entry.getKey(), entry.getValue()); |
| i++; |
| } |
| } else { |
| filteredLVs = labelAndValues; |
| } |
| |
| return filteredLVs; |
| } |
| } |