1 package org.apache.lucene.index;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
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16 * See the License for the specific language governing permissions and
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20 import org.apache.lucene.util.ArrayUtil;
21 import org.apache.lucene.util.RamUsageEstimator;
23 class ParallelPostingsArray {
24 final static int BYTES_PER_POSTING = 3 * RamUsageEstimator.NUM_BYTES_INT;
27 final int[] textStarts;
28 final int[] intStarts;
29 final int[] byteStarts;
31 ParallelPostingsArray(final int size) {
33 textStarts = new int[size];
34 intStarts = new int[size];
35 byteStarts = new int[size];
38 int bytesPerPosting() {
39 return BYTES_PER_POSTING;
42 ParallelPostingsArray newInstance(int size) {
43 return new ParallelPostingsArray(size);
46 final ParallelPostingsArray grow() {
47 int newSize = ArrayUtil.oversize(size + 1, bytesPerPosting());
48 ParallelPostingsArray newArray = newInstance(newSize);
49 copyTo(newArray, size);
53 void copyTo(ParallelPostingsArray toArray, int numToCopy) {
54 System.arraycopy(textStarts, 0, toArray.textStarts, 0, numToCopy);
55 System.arraycopy(intStarts, 0, toArray.intStarts, 0, numToCopy);
56 System.arraycopy(byteStarts, 0, toArray.byteStarts, 0, numToCopy);