pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / analyzers / common / src / java / org / apache / lucene / analysis / cn / ChineseTokenizer.java

diff --git a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/cn/ChineseTokenizer.java b/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/cn/ChineseTokenizer.java
deleted file mode 100644 (file)
index 0d42e16..0000000
--- a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/cn/ChineseTokenizer.java
+++ /dev/null
@@ -1,176 +0,0 @@
-package org.apache.lucene.analysis.cn;
-
-/**
- * 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.IOException;
-import java.io.Reader;
-
-import org.apache.lucene.analysis.standard.StandardTokenizer;
-import org.apache.lucene.analysis.Tokenizer;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
-import org.apache.lucene.util.AttributeSource;
-
-
-/**
- * Tokenize Chinese text as individual chinese characters.
- * 
- * <p>
- * The difference between ChineseTokenizer and
- * CJKTokenizer is that they have different
- * token parsing logic.
- * </p>
- * <p>
- * For example, if the Chinese text
- * "C1C2C3C4" is to be indexed:
- * <ul>
- * <li>The tokens returned from ChineseTokenizer are C1, C2, C3, C4. 
- * <li>The tokens returned from the CJKTokenizer are C1C2, C2C3, C3C4.
- * </ul>
- * </p>
- * <p>
- * Therefore the index created by CJKTokenizer is much larger.
- * </p>
- * <p>
- * The problem is that when searching for C1, C1C2, C1C3,
- * C4C2, C1C2C3 ... the ChineseTokenizer works, but the
- * CJKTokenizer will not work.
- * </p>
- * @version 1.0
- * @deprecated Use {@link StandardTokenizer} instead, which has the same functionality.
- * This filter will be removed in Lucene 5.0
- */
-@Deprecated
-public final class ChineseTokenizer extends Tokenizer {
-
-
-    public ChineseTokenizer(Reader in) {
-      super(in);
-    }
-
-    public ChineseTokenizer(AttributeSource source, Reader in) {
-      super(source, in);
-    }
-
-    public ChineseTokenizer(AttributeFactory factory, Reader in) {
-      super(factory, in);
-    }
-       
-    private int offset = 0, bufferIndex=0, dataLen=0;
-    private final static int MAX_WORD_LEN = 255;
-    private final static int IO_BUFFER_SIZE = 1024;
-    private final char[] buffer = new char[MAX_WORD_LEN];
-    private final char[] ioBuffer = new char[IO_BUFFER_SIZE];
-
-
-    private int length;
-    private int start;
-
-    private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
-    private final OffsetAttribute offsetAtt = addAttribute(OffsetAttribute.class);
-    
-    private final void push(char c) {
-
-        if (length == 0) start = offset-1;            // start of token
-        buffer[length++] = Character.toLowerCase(c);  // buffer it
-
-    }
-
-    private final boolean flush() {
-
-        if (length>0) {
-            //System.out.println(new String(buffer, 0,
-            //length));
-          termAtt.copyBuffer(buffer, 0, length);
-          offsetAtt.setOffset(correctOffset(start), correctOffset(start+length));
-          return true;
-        }
-        else
-            return false;
-    }
-
-    @Override
-    public boolean incrementToken() throws IOException {
-        clearAttributes();
-
-        length = 0;
-        start = offset;
-
-
-        while (true) {
-
-            final char c;
-            offset++;
-
-            if (bufferIndex >= dataLen) {
-                dataLen = input.read(ioBuffer);
-                bufferIndex = 0;
-            }
-
-            if (dataLen == -1) {
-              offset--;
-              return flush();
-            } else
-                c = ioBuffer[bufferIndex++];
-
-
-            switch(Character.getType(c)) {
-
-            case Character.DECIMAL_DIGIT_NUMBER:
-            case Character.LOWERCASE_LETTER:
-            case Character.UPPERCASE_LETTER:
-                push(c);
-                if (length == MAX_WORD_LEN) return flush();
-                break;
-
-            case Character.OTHER_LETTER:
-                if (length>0) {
-                    bufferIndex--;
-                    offset--;
-                    return flush();
-                }
-                push(c);
-                return flush();
-
-            default:
-                if (length>0) return flush();
-                break;
-            }
-        }
-    }
-    
-    @Override
-    public final void end() {
-      // set final offset
-      final int finalOffset = correctOffset(offset);
-      this.offsetAtt.setOffset(finalOffset, finalOffset);
-    }
-
-    @Override
-    public void reset() throws IOException {
-      super.reset();
-      offset = bufferIndex = dataLen = 0;
-    }
-    
-    @Override
-    public void reset(Reader input) throws IOException {
-      super.reset(input);
-      reset();
-    }
-}