| 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 java.io.IOException; |
| import java.util.List; |
| import java.util.Random; |
| |
| import junit.framework.Assert; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.index.AllDeletedFilterReader; |
| import org.apache.lucene.index.AtomicReader; |
| import org.apache.lucene.index.AtomicReaderContext; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.DirectoryReader; |
| import org.apache.lucene.index.IndexWriter; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.index.MultiReader; |
| import org.apache.lucene.index.SlowCompositeReaderWrapper; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.MockDirectoryWrapper; |
| import org.apache.lucene.store.RAMDirectory; |
| import org.apache.lucene.util.Bits; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| import static org.apache.lucene.util.LuceneTestCase.TEST_VERSION_CURRENT; |
| |
| /** |
| * Utility class for sanity-checking queries. |
| */ |
| public class QueryUtils { |
| |
| /** Check the types of things query objects should be able to do. */ |
| public static void check(Query q) { |
| checkHashEquals(q); |
| } |
| |
| /** check very basic hashCode and equals */ |
| public static void checkHashEquals(Query q) { |
| Query q2 = q.clone(); |
| checkEqual(q,q2); |
| |
| Query q3 = q.clone(); |
| q3.setBoost(7.21792348f); |
| checkUnequal(q,q3); |
| |
| // test that a class check is done so that no exception is thrown |
| // in the implementation of equals() |
| Query whacky = new Query() { |
| @Override |
| public String toString(String field) { |
| return "My Whacky Query"; |
| } |
| }; |
| whacky.setBoost(q.getBoost()); |
| checkUnequal(q, whacky); |
| |
| // null test |
| Assert.assertFalse(q.equals(null)); |
| } |
| |
| public static void checkEqual(Query q1, Query q2) { |
| Assert.assertEquals(q1, q2); |
| Assert.assertEquals(q1.hashCode(), q2.hashCode()); |
| } |
| |
| public static void checkUnequal(Query q1, Query q2) { |
| Assert.assertFalse(q1 + " equal to " + q2, q1.equals(q2)); |
| Assert.assertFalse(q2 + " equal to " + q1, q2.equals(q1)); |
| |
| // possible this test can fail on a hash collision... if that |
| // happens, please change test to use a different example. |
| Assert.assertTrue(q1.hashCode() != q2.hashCode()); |
| } |
| |
| /** deep check that explanations of a query 'score' correctly */ |
| public static void checkExplanations (final Query q, final IndexSearcher s) throws IOException { |
| CheckHits.checkExplanations(q, null, s, true); |
| } |
| |
| /** |
| * Various query sanity checks on a searcher, some checks are only done for |
| * instanceof IndexSearcher. |
| * |
| * @see #check(Query) |
| * @see #checkFirstSkipTo |
| * @see #checkSkipTo |
| * @see #checkExplanations |
| * @see #checkEqual |
| */ |
| public static void check(Random random, Query q1, IndexSearcher s) { |
| check(random, q1, s, true); |
| } |
| public static void check(Random random, Query q1, IndexSearcher s, boolean wrap) { |
| try { |
| check(q1); |
| if (s!=null) { |
| checkFirstSkipTo(q1,s); |
| checkSkipTo(q1,s); |
| if (wrap) { |
| check(random, q1, wrapUnderlyingReader(random, s, -1), false); |
| check(random, q1, wrapUnderlyingReader(random, s, 0), false); |
| check(random, q1, wrapUnderlyingReader(random, s, +1), false); |
| } |
| checkExplanations(q1,s); |
| |
| Query q2 = q1.clone(); |
| checkEqual(s.rewrite(q1), |
| s.rewrite(q2)); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| /** This is a MultiReader that can be used for randomly wrapping other readers |
| * without creating FieldCache insanity. |
| * The trick is to use an opaque/fake cache key. */ |
| public static class FCInvisibleMultiReader extends MultiReader { |
| private final Object cacheKey = new Object(); |
| |
| public FCInvisibleMultiReader(IndexReader... readers) { |
| super(readers); |
| } |
| |
| @Override |
| public Object getCoreCacheKey() { |
| return cacheKey; |
| } |
| |
| @Override |
| public Object getCombinedCoreAndDeletesKey() { |
| return cacheKey; |
| } |
| } |
| |
| /** |
| * Given an IndexSearcher, returns a new IndexSearcher whose IndexReader |
| * is a MultiReader containing the Reader of the original IndexSearcher, |
| * as well as several "empty" IndexReaders -- some of which will have |
| * deleted documents in them. This new IndexSearcher should |
| * behave exactly the same as the original IndexSearcher. |
| * @param s the searcher to wrap |
| * @param edge if negative, s will be the first sub; if 0, s will be in the middle, if positive s will be the last sub |
| */ |
| public static IndexSearcher wrapUnderlyingReader(Random random, final IndexSearcher s, final int edge) |
| throws IOException { |
| |
| IndexReader r = s.getIndexReader(); |
| |
| // we can't put deleted docs before the nested reader, because |
| // it will throw off the docIds |
| IndexReader[] readers = new IndexReader[] { |
| edge < 0 ? r : emptyReaders[0], |
| emptyReaders[0], |
| new FCInvisibleMultiReader(edge < 0 ? emptyReaders[4] : emptyReaders[0], |
| emptyReaders[0], |
| 0 == edge ? r : emptyReaders[0]), |
| 0 < edge ? emptyReaders[0] : emptyReaders[7], |
| emptyReaders[0], |
| new FCInvisibleMultiReader(0 < edge ? emptyReaders[0] : emptyReaders[5], |
| emptyReaders[0], |
| 0 < edge ? r : emptyReaders[0]) |
| }; |
| |
| IndexSearcher out = LuceneTestCase.newSearcher(new FCInvisibleMultiReader(readers)); |
| out.setSimilarity(s.getSimilarity()); |
| return out; |
| } |
| |
| static final IndexReader[] emptyReaders = new IndexReader[8]; |
| static { |
| try { |
| emptyReaders[0] = new MultiReader(); |
| emptyReaders[4] = makeEmptyIndex(new Random(0), 4); |
| emptyReaders[5] = makeEmptyIndex(new Random(0), 5); |
| emptyReaders[7] = makeEmptyIndex(new Random(0), 7); |
| } catch (IOException ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| private static IndexReader makeEmptyIndex(Random random, final int numDocs) throws IOException { |
| assert numDocs > 0; |
| Directory d = new MockDirectoryWrapper(random, new RAMDirectory()); |
| if (LuceneTestCase.VERBOSE) { |
| System.out.println("NOTE: QueryUtils: now create empty index"); |
| } |
| IndexWriter w = new IndexWriter(d, new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random))); |
| for (int i = 0; i < numDocs; i++) { |
| w.addDocument(new Document()); |
| } |
| w.forceMerge(1); |
| w.shutdown(); |
| if (LuceneTestCase.VERBOSE) { |
| System.out.println("NOTE: QueryUtils: done create empty index"); |
| } |
| DirectoryReader reader = DirectoryReader.open(d); |
| return new AllDeletedFilterReader(LuceneTestCase.getOnlySegmentReader(reader)); |
| } |
| |
| /** alternate scorer skipTo(),skipTo(),next(),next(),skipTo(),skipTo(), etc |
| * and ensure a hitcollector receives same docs and scores |
| */ |
| public static void checkSkipTo(final Query q, final IndexSearcher s) throws IOException { |
| //System.out.println("Checking "+q); |
| final List<AtomicReaderContext> readerContextArray = s.getTopReaderContext().leaves(); |
| if (s.createNormalizedWeight(q).scoresDocsOutOfOrder()) return; // in this case order of skipTo() might differ from that of next(). |
| |
| final int skip_op = 0; |
| final int next_op = 1; |
| final int orders [][] = { |
| {next_op}, |
| {skip_op}, |
| {skip_op, next_op}, |
| {next_op, skip_op}, |
| {skip_op, skip_op, next_op, next_op}, |
| {next_op, next_op, skip_op, skip_op}, |
| {skip_op, skip_op, skip_op, next_op, next_op}, |
| }; |
| for (int k = 0; k < orders.length; k++) { |
| |
| final int order[] = orders[k]; |
| // System.out.print("Order:");for (int i = 0; i < order.length; i++) |
| // System.out.print(order[i]==skip_op ? " skip()":" next()"); |
| // System.out.println(); |
| final int opidx[] = { 0 }; |
| final int lastDoc[] = {-1}; |
| |
| // FUTURE: ensure scorer.doc()==-1 |
| |
| final float maxDiff = 1e-5f; |
| final AtomicReader lastReader[] = {null}; |
| |
| s.search(q, new SimpleCollector() { |
| private Scorer sc; |
| private Scorer scorer; |
| private int leafPtr; |
| |
| @Override |
| public void setScorer(Scorer scorer) { |
| this.sc = scorer; |
| } |
| |
| @Override |
| public void collect(int doc) throws IOException { |
| float score = sc.score(); |
| lastDoc[0] = doc; |
| try { |
| if (scorer == null) { |
| Weight w = s.createNormalizedWeight(q); |
| AtomicReaderContext context = readerContextArray.get(leafPtr); |
| scorer = w.scorer(context, context.reader().getLiveDocs()); |
| } |
| |
| int op = order[(opidx[0]++) % order.length]; |
| // System.out.println(op==skip_op ? |
| // "skip("+(sdoc[0]+1)+")":"next()"); |
| boolean more = op == skip_op ? scorer.advance(scorer.docID() + 1) != DocIdSetIterator.NO_MORE_DOCS |
| : scorer.nextDoc() != DocIdSetIterator.NO_MORE_DOCS; |
| int scorerDoc = scorer.docID(); |
| float scorerScore = scorer.score(); |
| float scorerScore2 = scorer.score(); |
| float scoreDiff = Math.abs(score - scorerScore); |
| float scorerDiff = Math.abs(scorerScore2 - scorerScore); |
| if (!more || doc != scorerDoc || scoreDiff > maxDiff |
| || scorerDiff > maxDiff) { |
| StringBuilder sbord = new StringBuilder(); |
| for (int i = 0; i < order.length; i++) |
| sbord.append(order[i] == skip_op ? " skip()" : " next()"); |
| throw new RuntimeException("ERROR matching docs:" + "\n\t" |
| + (doc != scorerDoc ? "--> " : "") + "doc=" + doc + ", scorerDoc=" + scorerDoc |
| + "\n\t" + (!more ? "--> " : "") + "tscorer.more=" + more |
| + "\n\t" + (scoreDiff > maxDiff ? "--> " : "") |
| + "scorerScore=" + scorerScore + " scoreDiff=" + scoreDiff |
| + " maxDiff=" + maxDiff + "\n\t" |
| + (scorerDiff > maxDiff ? "--> " : "") + "scorerScore2=" |
| + scorerScore2 + " scorerDiff=" + scorerDiff |
| + "\n\thitCollector.doc=" + doc + " score=" + score |
| + "\n\t Scorer=" + scorer + "\n\t Query=" + q + " " |
| + q.getClass().getName() + "\n\t Searcher=" + s |
| + "\n\t Order=" + sbord + "\n\t Op=" |
| + (op == skip_op ? " skip()" : " next()")); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| protected void doSetNextReader(AtomicReaderContext context) throws IOException { |
| // confirm that skipping beyond the last doc, on the |
| // previous reader, hits NO_MORE_DOCS |
| if (lastReader[0] != null) { |
| final AtomicReader previousReader = lastReader[0]; |
| IndexSearcher indexSearcher = LuceneTestCase.newSearcher(previousReader); |
| indexSearcher.setSimilarity(s.getSimilarity()); |
| Weight w = indexSearcher.createNormalizedWeight(q); |
| AtomicReaderContext ctx = (AtomicReaderContext)indexSearcher.getTopReaderContext(); |
| Scorer scorer = w.scorer(ctx, ctx.reader().getLiveDocs()); |
| if (scorer != null) { |
| boolean more = scorer.advance(lastDoc[0] + 1) != DocIdSetIterator.NO_MORE_DOCS; |
| Assert.assertFalse("query's last doc was "+ lastDoc[0] +" but skipTo("+(lastDoc[0]+1)+") got to "+scorer.docID(),more); |
| } |
| leafPtr++; |
| } |
| lastReader[0] = context.reader(); |
| assert readerContextArray.get(leafPtr).reader() == context.reader(); |
| this.scorer = null; |
| lastDoc[0] = -1; |
| } |
| |
| @Override |
| public boolean acceptsDocsOutOfOrder() { |
| return false; |
| } |
| }); |
| |
| if (lastReader[0] != null) { |
| // confirm that skipping beyond the last doc, on the |
| // previous reader, hits NO_MORE_DOCS |
| final AtomicReader previousReader = lastReader[0]; |
| IndexSearcher indexSearcher = LuceneTestCase.newSearcher(previousReader, false); |
| indexSearcher.setSimilarity(s.getSimilarity()); |
| Weight w = indexSearcher.createNormalizedWeight(q); |
| AtomicReaderContext ctx = previousReader.getContext(); |
| Scorer scorer = w.scorer(ctx, ctx.reader().getLiveDocs()); |
| if (scorer != null) { |
| boolean more = scorer.advance(lastDoc[0] + 1) != DocIdSetIterator.NO_MORE_DOCS; |
| Assert.assertFalse("query's last doc was "+ lastDoc[0] +" but skipTo("+(lastDoc[0]+1)+") got to "+scorer.docID(),more); |
| } |
| } |
| } |
| } |
| |
| /** check that first skip on just created scorers always goes to the right doc */ |
| public static void checkFirstSkipTo(final Query q, final IndexSearcher s) throws IOException { |
| //System.out.println("checkFirstSkipTo: "+q); |
| final float maxDiff = 1e-3f; |
| final int lastDoc[] = {-1}; |
| final AtomicReader lastReader[] = {null}; |
| final List<AtomicReaderContext> context = s.getTopReaderContext().leaves(); |
| s.search(q,new SimpleCollector() { |
| private Scorer scorer; |
| private int leafPtr; |
| private Bits liveDocs; |
| @Override |
| public void setScorer(Scorer scorer) { |
| this.scorer = scorer; |
| } |
| @Override |
| public void collect(int doc) throws IOException { |
| float score = scorer.score(); |
| try { |
| long startMS = System.currentTimeMillis(); |
| for (int i=lastDoc[0]+1; i<=doc; i++) { |
| Weight w = s.createNormalizedWeight(q); |
| Scorer scorer = w.scorer(context.get(leafPtr), liveDocs); |
| Assert.assertTrue("query collected "+doc+" but skipTo("+i+") says no more docs!",scorer.advance(i) != DocIdSetIterator.NO_MORE_DOCS); |
| Assert.assertEquals("query collected "+doc+" but skipTo("+i+") got to "+scorer.docID(),doc,scorer.docID()); |
| float skipToScore = scorer.score(); |
| Assert.assertEquals("unstable skipTo("+i+") score!",skipToScore,scorer.score(),maxDiff); |
| Assert.assertEquals("query assigned doc "+doc+" a score of <"+score+"> but skipTo("+i+") has <"+skipToScore+">!",score,skipToScore,maxDiff); |
| |
| // Hurry things along if they are going slow (eg |
| // if you got SimpleText codec this will kick in): |
| if (i < doc && System.currentTimeMillis() - startMS > 5) { |
| i = doc-1; |
| } |
| } |
| lastDoc[0] = doc; |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| protected void doSetNextReader(AtomicReaderContext context) throws IOException { |
| // confirm that skipping beyond the last doc, on the |
| // previous reader, hits NO_MORE_DOCS |
| if (lastReader[0] != null) { |
| final AtomicReader previousReader = lastReader[0]; |
| IndexSearcher indexSearcher = LuceneTestCase.newSearcher(previousReader); |
| indexSearcher.setSimilarity(s.getSimilarity()); |
| Weight w = indexSearcher.createNormalizedWeight(q); |
| Scorer scorer = w.scorer((AtomicReaderContext)indexSearcher.getTopReaderContext(), previousReader.getLiveDocs()); |
| if (scorer != null) { |
| boolean more = scorer.advance(lastDoc[0] + 1) != DocIdSetIterator.NO_MORE_DOCS; |
| Assert.assertFalse("query's last doc was "+ lastDoc[0] +" but skipTo("+(lastDoc[0]+1)+") got to "+scorer.docID(),more); |
| } |
| leafPtr++; |
| } |
| |
| lastReader[0] = context.reader(); |
| lastDoc[0] = -1; |
| liveDocs = context.reader().getLiveDocs(); |
| } |
| @Override |
| public boolean acceptsDocsOutOfOrder() { |
| return false; |
| } |
| }); |
| |
| if (lastReader[0] != null) { |
| // confirm that skipping beyond the last doc, on the |
| // previous reader, hits NO_MORE_DOCS |
| final AtomicReader previousReader = lastReader[0]; |
| IndexSearcher indexSearcher = LuceneTestCase.newSearcher(previousReader); |
| indexSearcher.setSimilarity(s.getSimilarity()); |
| Weight w = indexSearcher.createNormalizedWeight(q); |
| Scorer scorer = w.scorer((AtomicReaderContext)indexSearcher.getTopReaderContext(), previousReader.getLiveDocs()); |
| if (scorer != null) { |
| boolean more = scorer.advance(lastDoc[0] + 1) != DocIdSetIterator.NO_MORE_DOCS; |
| Assert.assertFalse("query's last doc was "+ lastDoc[0] +" but skipTo("+(lastDoc[0]+1)+") got to "+scorer.docID(),more); |
| } |
| } |
| } |
| } |