richardstartin commented on a change in pull request #8384: URL: https://github.com/apache/pinot/pull/8384#discussion_r839480217
########## File path: pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/nativefst/NativeTextIndexCreator.java ########## @@ -0,0 +1,173 @@ +/** + * 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.pinot.segment.local.utils.nativefst; + +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.RandomAccessFile; +import java.nio.ByteBuffer; +import java.nio.channels.FileChannel; +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.TreeMap; +import org.apache.commons.io.FileUtils; +import org.apache.lucene.analysis.Analyzer; +import org.apache.lucene.analysis.TokenStream; +import org.apache.lucene.analysis.standard.StandardAnalyzer; +import org.apache.lucene.analysis.tokenattributes.CharTermAttribute; +import org.apache.pinot.segment.local.segment.creator.impl.inv.BitmapInvertedIndexWriter; +import org.apache.pinot.segment.local.segment.creator.impl.text.LuceneTextIndexCreator; +import org.apache.pinot.segment.local.utils.nativefst.builder.FSTBuilder; +import org.apache.pinot.segment.spi.V1Constants; +import org.apache.pinot.segment.spi.index.creator.TextIndexCreator; +import org.roaringbitmap.Container; +import org.roaringbitmap.RoaringBitmap; +import org.roaringbitmap.RoaringBitmapWriter; + +import static java.nio.charset.StandardCharsets.UTF_8; + + +public class NativeTextIndexCreator implements TextIndexCreator { + static final String TEMP_DIR_SUFFIX = ".nativetext.idx.tmp"; + static final String FST_FILE_NAME = "native.fst"; + static final String INVERTED_INDEX_FILE_NAME = "inverted.index.buf"; + public static final int HEADER_LENGTH = 24; + + private String _columnName; + private FSTBuilder _fstBuilder; + private final File _indexFile; + private final File _tempDir; + private final File _fstIndexFile; + private final File _invertedIndexFile; + final Map<String, RoaringBitmapWriter<RoaringBitmap>> _postingListMap = new TreeMap<>(); + final RoaringBitmapWriter.Wizard<Container, RoaringBitmap> _bitmapWriterWizard = RoaringBitmapWriter.writer(); + private int _nextDocId = 0; + private int _fstDataSize; + private int _numBitMaps; + + public NativeTextIndexCreator(String column, File indexDir) + throws IOException { + _columnName = column; + _fstBuilder = new FSTBuilder(); + _indexFile = new File(indexDir, column + V1Constants.Indexes.NATIVE_TEXT_INDEX_FILE_EXTENSION); + _tempDir = new File(indexDir, column + TEMP_DIR_SUFFIX); + if (_tempDir.exists()) { + FileUtils.cleanDirectory(_tempDir); + } else { + FileUtils.forceMkdir(_tempDir); + } + _fstIndexFile = new File(_tempDir, FST_FILE_NAME); + _invertedIndexFile = new File(_tempDir, INVERTED_INDEX_FILE_NAME); + } + + @Override + public void add(String document) { + List<String> tokens; + try { + tokens = analyze(document, new StandardAnalyzer(LuceneTextIndexCreator.ENGLISH_STOP_WORDS_SET)); + } catch (IOException e) { + throw new RuntimeException(e.getMessage()); + } + + for (String token : tokens) { + addToPostingList(token); + } + + _nextDocId++; + } + + @Override + public void add(String[] documents, int length) { + for (int i = 0; i < length; i++) { + add(documents[i]); + } Review comment: MV support has been removed. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org For additional commands, e-mail: commits-h...@pinot.apache.org
