+++ /dev/null
-package org.apache.lucene.misc;
-
-/**
- * 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 org.apache.lucene.analysis.MockAnalyzer;
-import org.apache.lucene.document.Document;
-import org.apache.lucene.document.Field;
-import org.apache.lucene.index.FieldInvertState;
-import org.apache.lucene.index.FieldNormModifier;
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.IndexWriter;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.search.Collector;
-import org.apache.lucene.search.DefaultSimilarity;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.Scorer;
-import org.apache.lucene.search.Similarity;
-import org.apache.lucene.search.TermQuery;
-import org.apache.lucene.store.Directory;
-import org.apache.lucene.util.LuceneTestCase;
-
-/**
- * Tests changing the norms after changing the simularity
- */
-public class TestLengthNormModifier extends LuceneTestCase {
- public static int NUM_DOCS = 5;
-
- public Directory store;
-
- /** inverts the normal notion of lengthNorm */
- public static Similarity s = new DefaultSimilarity() {
- @Override
- public float computeNorm(String fieldName, FieldInvertState state) {
- return state.getBoost() * (discountOverlaps ? state.getLength() - state.getNumOverlap() : state.getLength());
- }
- };
-
- @Override
- public void setUp() throws Exception {
- super.setUp();
- store = newDirectory();
- IndexWriter writer = new IndexWriter(store, newIndexWriterConfig(
- TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMergePolicy(newLogMergePolicy()));
-
- for (int i = 0; i < NUM_DOCS; i++) {
- Document d = new Document();
- d.add(newField("field", "word",
- Field.Store.YES, Field.Index.ANALYZED));
- d.add(newField("nonorm", "word",
- Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
-
- for (int j = 1; j <= i; j++) {
- d.add(newField("field", "crap",
- Field.Store.YES, Field.Index.ANALYZED));
- d.add(newField("nonorm", "more words",
- Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
- }
- writer.addDocument(d);
- }
- writer.close();
- }
-
- @Override
- public void tearDown() throws Exception {
- store.close();
- super.tearDown();
- }
-
- public void testMissingField() throws Exception {
- FieldNormModifier fnm = new FieldNormModifier(store, s);
- try {
- fnm.reSetNorms("nobodyherebutuschickens");
- } catch (IllegalStateException e) {
- // expected
- }
- }
-
- public void testFieldWithNoNorm() throws Exception {
-
- IndexReader r = IndexReader.open(store, false);
- byte[] norms = r.norms("nonorm");
-
- // sanity check, norms should all be 1
- assertTrue("Whoops we have norms?", !r.hasNorms("nonorm"));
- assertNull(norms);
-
- r.close();
-
- FieldNormModifier fnm = new FieldNormModifier(store, s);
- try {
- fnm.reSetNorms("nonorm");
- } catch (IllegalStateException e) {
- // expected
- }
-
- // nothing should have changed
- r = IndexReader.open(store, false);
-
- norms = r.norms("nonorm");
- assertTrue("Whoops we have norms?", !r.hasNorms("nonorm"));
- assertNull(norms);
-
- r.close();
-
- }
-
-
- public void testGoodCases() throws Exception {
-
- IndexSearcher searcher;
- final float[] scores = new float[NUM_DOCS];
- float lastScore = 0.0f;
-
- // default similarity should put docs with shorter length first
- searcher = new IndexSearcher(store, false);
- searcher.search(new TermQuery(new Term("field", "word")), new Collector() {
- private int docBase = 0;
- private Scorer scorer;
- @Override
- public final void collect(int doc) throws IOException {
- scores[doc + docBase] = scorer.score();
- }
- @Override
- public void setNextReader(IndexReader reader, int docBase) {
- this.docBase = docBase;
- }
- @Override
- public void setScorer(Scorer scorer) throws IOException {
- this.scorer = scorer;
- }
- @Override
- public boolean acceptsDocsOutOfOrder() {
- return true;
- }
- });
- searcher.close();
-
- lastScore = Float.MAX_VALUE;
- for (int i = 0; i < NUM_DOCS; i++) {
- String msg = "i=" + i + ", "+scores[i]+" <= "+lastScore;
- assertTrue(msg, scores[i] <= lastScore);
- //System.out.println(msg);
- lastScore = scores[i];
- }
-
- // override the norms to be inverted
- Similarity s = new DefaultSimilarity() {
- @Override
- public float computeNorm(String fieldName, FieldInvertState state) {
- return state.getBoost() * (discountOverlaps ? state.getLength() - state.getNumOverlap() : state.getLength());
- }
- };
- FieldNormModifier fnm = new FieldNormModifier(store, s);
- fnm.reSetNorms("field");
-
- // new norm (with default similarity) should put longer docs first
- searcher = new IndexSearcher(store, false);
- searcher.search(new TermQuery(new Term("field", "word")), new Collector() {
- private int docBase = 0;
- private Scorer scorer;
- @Override
- public final void collect(int doc) throws IOException {
- scores[doc + docBase] = scorer.score();
- }
- @Override
- public void setNextReader(IndexReader reader, int docBase) {
- this.docBase = docBase;
- }
- @Override
- public void setScorer(Scorer scorer) throws IOException {
- this.scorer = scorer;
- }
- @Override
- public boolean acceptsDocsOutOfOrder() {
- return true;
- }
- });
- searcher.close();
-
- lastScore = 0.0f;
- for (int i = 0; i < NUM_DOCS; i++) {
- String msg = "i=" + i + ", "+scores[i]+" >= "+lastScore;
- assertTrue(msg, scores[i] >= lastScore);
- //System.out.println(msg);
- lastScore = scores[i];
- }
-
- }
-}
fnp / pylucene.git / blobdiff