--- /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.util.LuceneTestCase;
+import java.io.IOException;
+import java.util.Collection;
+
+import org.apache.lucene.index.FieldInvertState;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.RandomIndexWriter;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.search.Explanation.IDFExplanation;
+
+/** Similarity unit test.
+ *
+ *
+ * @version $Revision: 1091277 $
+ */
+public class TestSimilarity extends LuceneTestCase {
+
+ public static class SimpleSimilarity extends Similarity {
+ @Override public float computeNorm(String field, FieldInvertState state) { return state.getBoost(); }
+ @Override public float queryNorm(float sumOfSquaredWeights) { return 1.0f; }
+ @Override public float tf(float freq) { return freq; }
+ @Override public float sloppyFreq(int distance) { return 2.0f; }
+ @Override public float idf(int docFreq, int numDocs) { return 1.0f; }
+ @Override public float coord(int overlap, int maxOverlap) { return 1.0f; }
+ @Override public IDFExplanation idfExplain(Collection<Term> terms, Searcher searcher) throws IOException {
+ return new IDFExplanation() {
+ @Override
+ public float getIdf() {
+ return 1.0f;
+ }
+ @Override
+ public String explain() {
+ return "Inexplicable";
+ }
+ };
+ }
+ }
+
+ public void testSimilarity() throws Exception {
+ Directory store = newDirectory();
+ RandomIndexWriter writer = new RandomIndexWriter(random, store,
+ newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random))
+ .setSimilarity(new SimpleSimilarity()));
+
+ Document d1 = new Document();
+ d1.add(newField("field", "a c", Field.Store.YES, Field.Index.ANALYZED));
+
+ Document d2 = new Document();
+ d2.add(newField("field", "a b c", Field.Store.YES, Field.Index.ANALYZED));
+
+ writer.addDocument(d1);
+ writer.addDocument(d2);
+ IndexReader reader = writer.getReader();
+ writer.close();
+
+ IndexSearcher searcher = newSearcher(reader);
+ searcher.setSimilarity(new SimpleSimilarity());
+
+ Term a = new Term("field", "a");
+ Term b = new Term("field", "b");
+ Term c = new Term("field", "c");
+
+ searcher.search(new TermQuery(b), new Collector() {
+ private Scorer scorer;
+ @Override
+ public void setScorer(Scorer scorer) throws IOException {
+ this.scorer = scorer;
+ }
+ @Override
+ public final void collect(int doc) throws IOException {
+ assertEquals(1.0f, scorer.score());
+ }
+ @Override
+ public void setNextReader(IndexReader reader, int docBase) {}
+ @Override
+ public boolean acceptsDocsOutOfOrder() {
+ return true;
+ }
+ });
+
+ BooleanQuery bq = new BooleanQuery();
+ bq.add(new TermQuery(a), BooleanClause.Occur.SHOULD);
+ bq.add(new TermQuery(b), BooleanClause.Occur.SHOULD);
+ //System.out.println(bq.toString("field"));
+ searcher.search(bq, new Collector() {
+ private int base = 0;
+ private Scorer scorer;
+ @Override
+ public void setScorer(Scorer scorer) throws IOException {
+ this.scorer = scorer;
+ }
+ @Override
+ public final void collect(int doc) throws IOException {
+ //System.out.println("Doc=" + doc + " score=" + score);
+ assertEquals((float)doc+base+1, scorer.score());
+ }
+ @Override
+ public void setNextReader(IndexReader reader, int docBase) {
+ base = docBase;
+ }
+ @Override
+ public boolean acceptsDocsOutOfOrder() {
+ return true;
+ }
+ });
+
+ PhraseQuery pq = new PhraseQuery();
+ pq.add(a);
+ pq.add(c);
+ //System.out.println(pq.toString("field"));
+ searcher.search(pq,
+ new Collector() {
+ private Scorer scorer;
+ @Override
+ public void setScorer(Scorer scorer) throws IOException {
+ this.scorer = scorer;
+ }
+ @Override
+ public final void collect(int doc) throws IOException {
+ //System.out.println("Doc=" + doc + " score=" + score);
+ assertEquals(1.0f, scorer.score());
+ }
+ @Override
+ public void setNextReader(IndexReader reader, int docBase) {}
+ @Override
+ public boolean acceptsDocsOutOfOrder() {
+ return true;
+ }
+ });
+
+ pq.setSlop(2);
+ //System.out.println(pq.toString("field"));
+ searcher.search(pq, new Collector() {
+ private Scorer scorer;
+ @Override
+ public void setScorer(Scorer scorer) throws IOException {
+ this.scorer = scorer;
+ }
+ @Override
+ public final void collect(int doc) throws IOException {
+ //System.out.println("Doc=" + doc + " score=" + score);
+ assertEquals(2.0f, scorer.score());
+ }
+ @Override
+ public void setNextReader(IndexReader reader, int docBase) {}
+ @Override
+ public boolean acceptsDocsOutOfOrder() {
+ return true;
+ }
+ });
+
+ searcher.close();
+ reader.close();
+ store.close();
+ }
+}
fnp / pylucene.git / blobdiff