| package org.apache.lucene.index; |
| |
| /** |
| * Copyright 2006 The Apache Software Foundation |
| * |
| * Licensed 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.io.Reader; |
| import java.util.Random; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.tokenattributes.TermAttribute; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.IndexWriterConfig.OpenMode; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.RAMDirectory; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| class RepeatingTokenStream extends TokenStream { |
| public int num; |
| TermAttribute termAtt; |
| String value; |
| |
| public RepeatingTokenStream(String val) { |
| this.value = val; |
| this.termAtt = addAttribute(TermAttribute.class); |
| } |
| |
| @Override |
| public boolean incrementToken() throws IOException { |
| num--; |
| if (num >= 0) { |
| clearAttributes(); |
| termAtt.setTermBuffer(value); |
| return true; |
| } |
| return false; |
| } |
| } |
| |
| |
| public class TestTermdocPerf extends LuceneTestCase { |
| |
| void addDocs(Directory dir, final int ndocs, String field, final String val, final int maxTF, final float percentDocs) throws IOException { |
| final Random random = newRandom(); |
| final RepeatingTokenStream ts = new RepeatingTokenStream(val); |
| |
| Analyzer analyzer = new Analyzer() { |
| @Override |
| public TokenStream tokenStream(String fieldName, Reader reader) { |
| if (random.nextFloat() < percentDocs) ts.num = random.nextInt(maxTF)+1; |
| else ts.num=0; |
| return ts; |
| } |
| }; |
| |
| Document doc = new Document(); |
| doc.add(new Field(field,val, Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS)); |
| IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig( |
| TEST_VERSION_CURRENT, analyzer) |
| .setOpenMode(OpenMode.CREATE).setMaxBufferedDocs(100)); |
| ((LogMergePolicy) writer.getConfig().getMergePolicy()).setMergeFactor(100); |
| |
| for (int i=0; i<ndocs; i++) { |
| writer.addDocument(doc); |
| } |
| |
| writer.optimize(); |
| writer.close(); |
| } |
| |
| |
| public int doTest(int iter, int ndocs, int maxTF, float percentDocs) throws IOException { |
| Directory dir = new RAMDirectory(); |
| |
| long start = System.currentTimeMillis(); |
| addDocs(dir, ndocs, "foo", "val", maxTF, percentDocs); |
| long end = System.currentTimeMillis(); |
| if (VERBOSE) System.out.println("milliseconds for creation of " + ndocs + " docs = " + (end-start)); |
| |
| IndexReader reader = IndexReader.open(dir, true); |
| TermEnum tenum = reader.terms(new Term("foo","val")); |
| TermDocs tdocs = reader.termDocs(); |
| |
| start = System.currentTimeMillis(); |
| |
| int ret=0; |
| for (int i=0; i<iter; i++) { |
| tdocs.seek(tenum); |
| while (tdocs.next()) { |
| ret += tdocs.doc(); |
| } |
| } |
| |
| end = System.currentTimeMillis(); |
| if (VERBOSE) System.out.println("milliseconds for " + iter + " TermDocs iteration: " + (end-start)); |
| |
| return ret; |
| } |
| |
| public void testTermDocPerf() throws IOException { |
| // performance test for 10% of documents containing a term |
| // doTest(100000, 10000,3,.1f); |
| } |
| |
| |
| } |