+++ /dev/null
-package org.apache.lucene.search;
-
-/**
- * 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.
- */
-
-import org.apache.lucene.analysis.MockAnalyzer;
-import org.apache.lucene.document.Document;
-import org.apache.lucene.document.Field;
-import org.apache.lucene.index.*;
-import org.apache.lucene.search.FieldValueHitQueue.Entry;
-import org.apache.lucene.store.*;
-import org.apache.lucene.util.LuceneTestCase;
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
-
-public class TestElevationComparator extends LuceneTestCase {
-
- private final Map<String,Integer> priority = new HashMap<String,Integer>();
-
- //@Test
- public void testSorting() throws Throwable {
- Directory directory = newDirectory();
- IndexWriter writer = new IndexWriter(
- directory,
- newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).
- setMaxBufferedDocs(2).
- setMergePolicy(newLogMergePolicy(1000))
- );
- writer.addDocument(adoc(new String[] {"id", "a", "title", "ipod", "str_s", "a"}));
- writer.addDocument(adoc(new String[] {"id", "b", "title", "ipod ipod", "str_s", "b"}));
- writer.addDocument(adoc(new String[] {"id", "c", "title", "ipod ipod ipod", "str_s","c"}));
- writer.addDocument(adoc(new String[] {"id", "x", "title", "boosted", "str_s", "x"}));
- writer.addDocument(adoc(new String[] {"id", "y", "title", "boosted boosted", "str_s","y"}));
- writer.addDocument(adoc(new String[] {"id", "z", "title", "boosted boosted boosted","str_s", "z"}));
-
- IndexReader r = IndexReader.open(writer, true);
- writer.close();
-
- IndexSearcher searcher = newSearcher(r);
-
- runTest(searcher, true);
- runTest(searcher, false);
-
- searcher.close();
- r.close();
- directory.close();
- }
-
- private void runTest(IndexSearcher searcher, boolean reversed) throws Throwable {
-
- BooleanQuery newq = new BooleanQuery(false);
- TermQuery query = new TermQuery(new Term("title", "ipod"));
-
- newq.add(query, BooleanClause.Occur.SHOULD);
- newq.add(getElevatedQuery(new String[] {"id", "a", "id", "x"}), BooleanClause.Occur.SHOULD);
-
- Sort sort = new Sort(
- new SortField("id", new ElevationComparatorSource(priority), false),
- new SortField(null, SortField.SCORE, reversed)
- );
-
- TopDocsCollector<Entry> topCollector = TopFieldCollector.create(sort, 50, false, true, true, true);
- searcher.search(newq, null, topCollector);
-
- TopDocs topDocs = topCollector.topDocs(0, 10);
- int nDocsReturned = topDocs.scoreDocs.length;
-
- assertEquals(4, nDocsReturned);
-
- // 0 & 3 were elevated
- assertEquals(0, topDocs.scoreDocs[0].doc);
- assertEquals(3, topDocs.scoreDocs[1].doc);
-
- if (reversed) {
- assertEquals(2, topDocs.scoreDocs[2].doc);
- assertEquals(1, topDocs.scoreDocs[3].doc);
- } else {
- assertEquals(1, topDocs.scoreDocs[2].doc);
- assertEquals(2, topDocs.scoreDocs[3].doc);
- }
-
- /*
- for (int i = 0; i < nDocsReturned; i++) {
- ScoreDoc scoreDoc = topDocs.scoreDocs[i];
- ids[i] = scoreDoc.doc;
- scores[i] = scoreDoc.score;
- documents[i] = searcher.doc(ids[i]);
- System.out.println("ids[i] = " + ids[i]);
- System.out.println("documents[i] = " + documents[i]);
- System.out.println("scores[i] = " + scores[i]);
- }
- */
- }
-
- private Query getElevatedQuery(String[] vals) {
- BooleanQuery q = new BooleanQuery(false);
- q.setBoost(0);
- int max = (vals.length / 2) + 5;
- for (int i = 0; i < vals.length - 1; i += 2) {
- q.add(new TermQuery(new Term(vals[i], vals[i + 1])), BooleanClause.Occur.SHOULD);
- priority.put(vals[i + 1], Integer.valueOf(max--));
- // System.out.println(" pri doc=" + vals[i+1] + " pri=" + (1+max));
- }
- return q;
- }
-
- private Document adoc(String[] vals) {
- Document doc = new Document();
- for (int i = 0; i < vals.length - 2; i += 2) {
- doc.add(newField(vals[i], vals[i + 1], Field.Store.YES, Field.Index.ANALYZED));
- }
- return doc;
- }
-}
-
-class ElevationComparatorSource extends FieldComparatorSource {
- private final Map<String,Integer> priority;
-
- public ElevationComparatorSource(final Map<String,Integer> boosts) {
- this.priority = boosts;
- }
-
- @Override
- public FieldComparator newComparator(final String fieldname, final int numHits, int sortPos, boolean reversed) throws IOException {
- return new FieldComparator<Integer>() {
-
- FieldCache.StringIndex idIndex;
- private final int[] values = new int[numHits];
- int bottomVal;
-
- @Override
- public int compare(int slot1, int slot2) {
- return values[slot2] - values[slot1]; // values will be small enough that there is no overflow concern
- }
-
- @Override
- public void setBottom(int slot) {
- bottomVal = values[slot];
- }
-
- private int docVal(int doc) throws IOException {
- String id = idIndex.lookup[idIndex.order[doc]];
- Integer prio = priority.get(id);
- return prio == null ? 0 : prio.intValue();
- }
-
- @Override
- public int compareBottom(int doc) throws IOException {
- return docVal(doc) - bottomVal;
- }
-
- @Override
- public void copy(int slot, int doc) throws IOException {
- values[slot] = docVal(doc);
- }
-
- @Override
- public void setNextReader(IndexReader reader, int docBase) throws IOException {
- idIndex = FieldCache.DEFAULT.getStringIndex(reader, fieldname);
- }
-
- @Override
- public Integer value(int slot) {
- return Integer.valueOf(values[slot]);
- }
- };
- }
-}
fnp / pylucene.git / blobdiff