| /** |
| * Copyright 2010-2011 The Regents of the University of California |
| * |
| * Licensed 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. |
| * |
| * Author: Alexander Behm <abehm (at) ics.uci.edu> |
| */ |
| |
| package edu.uci.ics.hyracks.storage.am.lsm.invertedindex.tokenizers; |
| |
| import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable; |
| |
| public abstract class AbstractUTF8StringBinaryTokenizer implements IBinaryTokenizer { |
| |
| protected byte[] data; |
| protected int start; |
| protected int length; |
| protected int tokenLength; |
| protected int index; |
| protected int utf8Length; |
| |
| protected final IntArray tokensStart; |
| protected final IntArray tokensLength; |
| protected final IToken token; |
| |
| protected final boolean ignoreTokenCount; |
| protected final boolean sourceHasTypeTag; |
| |
| public AbstractUTF8StringBinaryTokenizer(boolean ignoreTokenCount, boolean sourceHasTypeTag, |
| ITokenFactory tokenFactory) { |
| this.ignoreTokenCount = ignoreTokenCount; |
| this.sourceHasTypeTag = sourceHasTypeTag; |
| if (!ignoreTokenCount) { |
| tokensStart = new IntArray(); |
| tokensLength = new IntArray(); |
| } else { |
| tokensStart = null; |
| tokensLength = null; |
| } |
| token = tokenFactory.createToken(); |
| } |
| |
| @Override |
| public IToken getToken() { |
| return token; |
| } |
| |
| @Override |
| public void reset(byte[] data, int start, int length) { |
| this.start = start; |
| index = this.start; |
| if (sourceHasTypeTag) { |
| index++; // skip type tag |
| } |
| utf8Length = UTF8StringPointable.getUTFLength(data, index); |
| index += 2; // skip utf8 length indicator |
| this.data = data; |
| this.length = length + start; |
| |
| tokenLength = 0; |
| if (!ignoreTokenCount) { |
| tokensStart.reset(); |
| tokensLength.reset(); |
| } |
| } |
| } |