| /* |
| * 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.index; |
| |
| import org.apache.lucene.util.ArrayUtil; |
| |
| class ParallelPostingsArray { |
| final static int BYTES_PER_POSTING = 3 * Integer.BYTES; |
| |
| final int size; |
| final int[] textStarts; // maps term ID to the terms's text start in the bytesHash |
| final int[] addressOffset; // maps term ID to current stream address |
| final int[] byteStarts; // maps term ID to stream start offset in the byte pool |
| |
| ParallelPostingsArray(final int size) { |
| this.size = size; |
| textStarts = new int[size]; |
| addressOffset = new int[size]; |
| byteStarts = new int[size]; |
| } |
| |
| int bytesPerPosting() { |
| return BYTES_PER_POSTING; |
| } |
| |
| ParallelPostingsArray newInstance(int size) { |
| return new ParallelPostingsArray(size); |
| } |
| |
| final ParallelPostingsArray grow() { |
| int newSize = ArrayUtil.oversize(size + 1, bytesPerPosting()); |
| ParallelPostingsArray newArray = newInstance(newSize); |
| copyTo(newArray, size); |
| return newArray; |
| } |
| |
| void copyTo(ParallelPostingsArray toArray, int numToCopy) { |
| System.arraycopy(textStarts, 0, toArray.textStarts, 0, numToCopy); |
| System.arraycopy(addressOffset, 0, toArray.addressOffset, 0, numToCopy); |
| System.arraycopy(byteStarts, 0, toArray.byteStarts, 0, numToCopy); |
| } |
| } |