package org.apache.lucene.index;
/**
* 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.
*/
final class CharBlockPool {
public char[][] buffers = new char[10][];
int numBuffer;
int bufferUpto = -1; // Which buffer we are upto
public int charUpto = DocumentsWriter.CHAR_BLOCK_SIZE; // Where we are in head buffer
public char[] buffer; // Current head buffer
public int charOffset = -DocumentsWriter.CHAR_BLOCK_SIZE; // Current head offset
final private DocumentsWriter docWriter;
public CharBlockPool(DocumentsWriter docWriter) {
this.docWriter = docWriter;
}
public void reset() {
docWriter.recycleCharBlocks(buffers, 1+bufferUpto);
bufferUpto = -1;
charUpto = DocumentsWriter.CHAR_BLOCK_SIZE;
charOffset = -DocumentsWriter.CHAR_BLOCK_SIZE;
}
public void nextBuffer() {
if (1+bufferUpto == buffers.length) {
char[][] newBuffers = new char[(int) (buffers.length*1.5)][];
System.arraycopy(buffers, 0, newBuffers, 0, buffers.length);
buffers = newBuffers;
}
buffer = buffers[1+bufferUpto] = docWriter.getCharBlock();
bufferUpto++;
charUpto = 0;
charOffset += DocumentsWriter.CHAR_BLOCK_SIZE;
}
}