org.apache.lucene.codecs.simpletext.SimpleTextBKDReader Maven / Gradle / Ivy

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Codecs and postings formats for Apache Lucene.

There is a newer version: 7.6.0

/*
 * 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.codecs.simpletext;


import java.io.IOException;
import java.nio.charset.StandardCharsets;

import org.apache.lucene.index.PointValues.IntersectVisitor;
import org.apache.lucene.store.IndexInput;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.BytesRefBuilder;
import org.apache.lucene.util.StringHelper;
import org.apache.lucene.util.bkd.BKDReader;

import static org.apache.lucene.codecs.simpletext.SimpleTextPointsWriter.BLOCK_COUNT;
import static org.apache.lucene.codecs.simpletext.SimpleTextPointsWriter.BLOCK_DOC_ID;
import static org.apache.lucene.codecs.simpletext.SimpleTextPointsWriter.BLOCK_VALUE;

class SimpleTextBKDReader extends BKDReader {

  public SimpleTextBKDReader(IndexInput datIn, int numDims, int maxPointsInLeafNode, int bytesPerDim, long[] leafBlockFPs, byte[] splitPackedValues,
                             byte[] minPackedValue, byte[] maxPackedValue, long pointCount, int docCount) throws IOException {
    super(datIn, numDims, maxPointsInLeafNode, bytesPerDim, leafBlockFPs, splitPackedValues, minPackedValue, maxPackedValue, pointCount, docCount);
  }

  @Override
  protected void visitDocIDs(IndexInput in, long blockFP, IntersectVisitor visitor) throws IOException {
    BytesRefBuilder scratch = new BytesRefBuilder();
    in.seek(blockFP);
    readLine(in, scratch);
    int count = parseInt(scratch, BLOCK_COUNT);
    visitor.grow(count);
    for(int i=0;i