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package org.apache.lucene.index;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import org.apache.lucene.util.ArrayUtil;
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import org.apache.lucene.util.RamUsageEstimator;
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class ParallelPostingsArray {
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final static int BYTES_PER_POSTING = 3 * RamUsageEstimator.NUM_BYTES_INT;
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final int[] textStarts;
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final int[] intStarts;
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final int[] byteStarts;
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ParallelPostingsArray(final int size) {
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textStarts = new int[size];
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intStarts = new int[size];
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byteStarts = new int[size];
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int bytesPerPosting() {
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return BYTES_PER_POSTING;
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ParallelPostingsArray newInstance(int size) {
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return new ParallelPostingsArray(size);
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final ParallelPostingsArray grow() {
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int newSize = ArrayUtil.oversize(size + 1, bytesPerPosting());
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ParallelPostingsArray newArray = newInstance(newSize);
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copyTo(newArray, size);
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void copyTo(ParallelPostingsArray toArray, int numToCopy) {
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System.arraycopy(textStarts, 0, toArray.textStarts, 0, numToCopy);
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System.arraycopy(intStarts, 0, toArray.intStarts, 0, numToCopy);
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System.arraycopy(byteStarts, 0, toArray.byteStarts, 0, numToCopy);