+++ /dev/null
-package org.apache.lucene.analysis;
-
-/**
- * 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.util.AttributeSource;
-import org.apache.lucene.util.Version;
-
-/**
- * A LetterTokenizer is a tokenizer that divides text at non-letters. That's to
- * say, it defines tokens as maximal strings of adjacent letters, as defined by
- * java.lang.Character.isLetter() predicate.
- * <p>
- * Note: this does a decent job for most European languages, but does a terrible
- * job for some Asian languages, where words are not separated by spaces.
- * </p>
- * <p>
- * <a name="version"/>
- * You must specify the required {@link Version} compatibility when creating
- * {@link LetterTokenizer}:
- * <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>
- * </p>
- */
-
-public class LetterTokenizer extends CharTokenizer {
-
- /**
- * Construct a new LetterTokenizer.
- *
- * @param matchVersion
- * Lucene version to match See {@link <a href="#version">above</a>}
- * @param in
- * the input to split up into tokens
- */
- public LetterTokenizer(Version matchVersion, Reader in) {
- super(matchVersion, in);
- }
-
- /**
- * Construct a new LetterTokenizer 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 LetterTokenizer(Version matchVersion, AttributeSource source, Reader in) {
- super(matchVersion, source, in);
- }
-
- /**
- * Construct a new LetterTokenizer 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 LetterTokenizer(Version matchVersion, AttributeFactory factory, Reader in) {
- super(matchVersion, factory, in);
- }
-
- /**
- * Construct a new LetterTokenizer.
- *
- * @deprecated use {@link #LetterTokenizer(Version, Reader)} instead. This
- * will be removed in Lucene 4.0.
- */
- @Deprecated
- public LetterTokenizer(Reader in) {
- super(Version.LUCENE_30, in);
- }
-
- /**
- * Construct a new LetterTokenizer using a given {@link AttributeSource}.
- * @deprecated
- * use {@link #LetterTokenizer(Version, AttributeSource, Reader)} instead.
- * This will be removed in Lucene 4.0.
- */
- @Deprecated
- public LetterTokenizer(AttributeSource source, Reader in) {
- super(Version.LUCENE_30, source, in);
- }
-
- /**
- * Construct a new LetterTokenizer using a given
- * {@link org.apache.lucene.util.AttributeSource.AttributeFactory}.
- *
- * @deprecated use {@link #LetterTokenizer(Version, AttributeSource.AttributeFactory, Reader)}
- * instead. This will be removed in Lucene 4.0.
- */
- @Deprecated
- public LetterTokenizer(AttributeFactory factory, Reader in) {
- super(Version.LUCENE_30, factory, in);
- }
-
- /** Collects only characters which satisfy
- * {@link Character#isLetter(int)}.*/
- @Override
- protected boolean isTokenChar(int c) {
- return Character.isLetter(c);
- }
-}