| /* |
| * 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.lucene.index; |
| |
| import org.apache.lucene.analysis.CannedBinaryTokenStream; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.document.TextField; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.util.TestUtil; |
| |
| public class TestTerms extends LuceneTestCase { |
| |
| public void testTermMinMaxBasic() throws Exception { |
| Directory dir = newDirectory(); |
| RandomIndexWriter w = new RandomIndexWriter(random(), dir); |
| Document doc = new Document(); |
| doc.add(newTextField("field", "a b c cc ddd", Field.Store.NO)); |
| w.addDocument(doc); |
| IndexReader r = w.getReader(); |
| Terms terms = MultiTerms.getTerms(r, "field"); |
| assertEquals(new BytesRef("a"), terms.getMin()); |
| assertEquals(new BytesRef("ddd"), terms.getMax()); |
| r.close(); |
| w.close(); |
| dir.close(); |
| } |
| |
| public void testTermMinMaxRandom() throws Exception { |
| Directory dir = newDirectory(); |
| RandomIndexWriter w = new RandomIndexWriter(random(), dir); |
| int numDocs = atLeast(100); |
| BytesRef minTerm = null; |
| BytesRef maxTerm = null; |
| for(int i=0;i<numDocs;i++ ){ |
| Document doc = new Document(); |
| Field field = new TextField("field", "", Field.Store.NO); |
| doc.add(field); |
| //System.out.println(" doc " + i); |
| CannedBinaryTokenStream.BinaryToken[] tokens = new CannedBinaryTokenStream.BinaryToken[atLeast(10)]; |
| for(int j=0;j<tokens.length;j++) { |
| byte[] bytes = new byte[TestUtil.nextInt(random(), 1, 20)]; |
| random().nextBytes(bytes); |
| BytesRef tokenBytes = new BytesRef(bytes); |
| //System.out.println(" token " + tokenBytes); |
| if (minTerm == null || tokenBytes.compareTo(minTerm) < 0) { |
| //System.out.println(" ** new min"); |
| minTerm = tokenBytes; |
| } |
| if (maxTerm == null || tokenBytes.compareTo(maxTerm) > 0) { |
| //System.out.println(" ** new max"); |
| maxTerm = tokenBytes; |
| } |
| tokens[j] = new CannedBinaryTokenStream.BinaryToken(tokenBytes); |
| } |
| field.setTokenStream(new CannedBinaryTokenStream(tokens)); |
| w.addDocument(doc); |
| } |
| |
| IndexReader r = w.getReader(); |
| Terms terms = MultiTerms.getTerms(r, "field"); |
| assertEquals(minTerm, terms.getMin()); |
| assertEquals(maxTerm, terms.getMax()); |
| |
| r.close(); |
| w.close(); |
| dir.close(); |
| } |
| } |