| /* |
| * 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.analysis.core; |
| |
| |
| import org.apache.lucene.analysis.Tokenizer; |
| import org.apache.lucene.analysis.util.CharTokenizer; |
| import org.apache.lucene.analysis.util.UnicodeProps; |
| import org.apache.lucene.util.AttributeFactory; |
| |
| /** |
| * A UnicodeWhitespaceTokenizer is a tokenizer that divides text at whitespace. |
| * Adjacent sequences of non-Whitespace characters form tokens (according to |
| * Unicode's WHITESPACE property). |
| * <p> |
| * <em>For Unicode version see: {@link UnicodeProps}</em> |
| */ |
| public final class UnicodeWhitespaceTokenizer extends CharTokenizer { |
| |
| /** |
| * Construct a new UnicodeWhitespaceTokenizer. |
| */ |
| public UnicodeWhitespaceTokenizer() { |
| } |
| |
| /** |
| * Construct a new UnicodeWhitespaceTokenizer using a given |
| * {@link org.apache.lucene.util.AttributeFactory}. |
| * |
| * @param factory |
| * the attribute factory to use for this {@link Tokenizer} |
| */ |
| public UnicodeWhitespaceTokenizer(AttributeFactory factory) { |
| super(factory); |
| } |
| |
| /** |
| * Construct a new UnicodeWhitespaceTokenizer using a given |
| * {@link org.apache.lucene.util.AttributeFactory}. |
| * |
| * @param factory the attribute factory to use for this {@link Tokenizer} |
| * @param maxTokenLen maximum token length the tokenizer will emit. |
| * Must be greater than 0 and less than MAX_TOKEN_LENGTH_LIMIT (1024*1024) |
| * @throws IllegalArgumentException if maxTokenLen is invalid. |
| */ |
| public UnicodeWhitespaceTokenizer(AttributeFactory factory, int maxTokenLen) { |
| super(factory, maxTokenLen); |
| } |
| |
| /** Collects only characters which do not satisfy Unicode's WHITESPACE property. */ |
| @Override |
| protected boolean isTokenChar(int c) { |
| return !UnicodeProps.WHITESPACE.get(c); |
| } |
| |
| } |