| /* |
| * 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.ja.dict; |
| |
| |
| import java.io.IOException; |
| |
| /** |
| * Dictionary for unknown-word handling. |
| */ |
| public final class UnknownDictionary extends BinaryDictionary { |
| |
| private final CharacterDefinition characterDefinition = CharacterDefinition.getInstance(); |
| |
| /** |
| * @param scheme scheme for loading resources (FILE or CLASSPATH). |
| * @param path where to load resources from; a path, including the file base name without |
| * extension; this is used to match multiple files with the same base name. |
| */ |
| public UnknownDictionary(ResourceScheme scheme, String path) throws IOException { |
| super(scheme, path); |
| } |
| |
| private UnknownDictionary() throws IOException { |
| super(); |
| } |
| |
| public int lookup(char[] text, int offset, int len) { |
| if(!characterDefinition.isGroup(text[offset])) { |
| return 1; |
| } |
| |
| // Extract unknown word. Characters with the same character class are considered to be part of unknown word |
| byte characterIdOfFirstCharacter = characterDefinition.getCharacterClass(text[offset]); |
| int length = 1; |
| for (int i = 1; i < len; i++) { |
| if (characterIdOfFirstCharacter == characterDefinition.getCharacterClass(text[offset+i])){ |
| length++; |
| } else { |
| break; |
| } |
| } |
| |
| return length; |
| } |
| |
| public CharacterDefinition getCharacterDefinition() { |
| return characterDefinition; |
| } |
| |
| @Override |
| public String getReading(int wordId, char surface[], int off, int len) { |
| return null; |
| } |
| |
| @Override |
| public String getInflectionType(int wordId) { |
| return null; |
| } |
| |
| @Override |
| public String getInflectionForm(int wordId) { |
| return null; |
| } |
| |
| public static UnknownDictionary getInstance() { |
| return SingletonHolder.INSTANCE; |
| } |
| |
| private static class SingletonHolder { |
| static final UnknownDictionary INSTANCE; |
| static { |
| try { |
| INSTANCE = new UnknownDictionary(); |
| } catch (IOException ioe) { |
| throw new RuntimeException("Cannot load UnknownDictionary.", ioe); |
| } |
| } |
| } |
| |
| } |