package experiments.collective.entdoccentric.query;
/*
* 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.
*/
import java.io.Reader;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.util.CharTokenizer;
import org.apache.lucene.util.AttributeSource;
import org.apache.lucene.util.Version;
/**
* A WhitespaceTokenizer is a tokenizer that divides text at whitespace.
* Adjacent sequences of non-Whitespace characters form tokens. <a
* name="version"/>
* <p>
* You must specify the required {@link Version} compatibility when creating
* {@link WhitespaceTokenizer}:
* <ul>
* <li>As of 3.1, {@link CharTokenizer} uses an int based API to normalize and
* detect token characters. See {@link CharTokenizer#isTokenChar(int)} and
* {@link CharTokenizer#normalize(int)} for details.</li>
* </ul>
*/
public final class CalbCTokenizer extends CharTokenizer {
/**
* Construct a new WhitespaceTokenizer. * @param matchVersion Lucene version
* to match See {@link <a href="#version">above</a>}
*
* @param in
* the input to split up into tokens
*/
public CalbCTokenizer(Version matchVersion, Reader in) {
super(matchVersion, in);
}
/**
* Construct a new WhitespaceTokenizer using a given {@link AttributeSource}
* .
*
* @param matchVersion
* Lucene version to match See
* {@link <a href="#version">above</a>}
* @param source
* the attribute source to use for this {@link Tokenizer}
* @param in
* the input to split up into tokens
*/
public CalbCTokenizer(Version matchVersion, AttributeSource source,
Reader in) {
super(matchVersion, source, in);
}
/**
* Construct a new WhitespaceTokenizer using a given
* {@link org.apache.lucene.util.AttributeSource.AttributeFactory}.
*
* @param matchVersion
* Lucene version to match See
* {@link <a href="#version">above</a>}
* @param factory
* the attribute factory to use for this {@link Tokenizer}
* @param in
* the input to split up into tokens
*/
public CalbCTokenizer(Version matchVersion, AttributeFactory factory,
Reader in) {
super(matchVersion, factory, in);
}
/**
* Collects only characters which do not satisfy
* {@link Character#isWhitespace(int)}.
*/
@Override
protected boolean isTokenChar(int c) {
boolean check = true;
if (Character.isWhitespace(c) || c == 46) {
check = false;
}
return check;
}
}