| /* |
| Egothor Software License version 1.00 |
| Copyright (C) 1997-2004 Leo Galambos. |
| Copyright (C) 2002-2004 "Egothor developers" |
| on behalf of the Egothor Project. |
| All rights reserved. |
| |
| This software is copyrighted by the "Egothor developers". If this |
| license applies to a single file or document, the "Egothor developers" |
| are the people or entities mentioned as copyright holders in that file |
| or document. If this license applies to the Egothor project as a |
| whole, the copyright holders are the people or entities mentioned in |
| the file CREDITS. This file can be found in the same location as this |
| license in the distribution. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are |
| met: |
| 1. Redistributions of source code must retain the above copyright |
| notice, the list of contributors, this list of conditions, and the |
| following disclaimer. |
| 2. Redistributions in binary form must reproduce the above copyright |
| notice, the list of contributors, this list of conditions, and the |
| disclaimer that follows these conditions in the documentation |
| and/or other materials provided with the distribution. |
| 3. The name "Egothor" must not be used to endorse or promote products |
| derived from this software without prior written permission. For |
| written permission, please contact Leo.G@seznam.cz |
| 4. Products derived from this software may not be called "Egothor", |
| nor may "Egothor" appear in their name, without prior written |
| permission from Leo.G@seznam.cz. |
| |
| In addition, we request that you include in the end-user documentation |
| provided with the redistribution and/or in the software itself an |
| acknowledgement equivalent to the following: |
| "This product includes software developed by the Egothor Project. |
| http://egothor.sf.net/" |
| |
| THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| IN NO EVENT SHALL THE EGOTHOR PROJECT OR ITS CONTRIBUTORS BE LIABLE |
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| This software consists of voluntary contributions made by many |
| individuals on behalf of the Egothor Project and was originally |
| created by Leo Galambos (Leo.G@seznam.cz). |
| */ |
| package org.egothor.stemmer; |
| |
| /** |
| * The Optimizer class is a Trie that will be reduced (have empty rows removed). |
| * <p> |
| * This is the result of allowing a joining of rows when there is no collision |
| * between non-<tt>null</tt> values in the rows. Information loss, resulting in |
| * the stemmer not being able to recognize words (as in Optimizer), is |
| * curtailed, allowing the stemmer to recognize words for which the original |
| * trie was built. Use of this class allows the stemmer to be self-teaching. |
| */ |
| public class Optimizer2 extends Optimizer { |
| /** |
| * Constructor for the Optimizer2 object. |
| */ |
| public Optimizer2() {} |
| |
| /** |
| * Merge the given Cells and return the resulting Cell. |
| * |
| * @param m the master Cell |
| * @param e the existing Cell |
| * @return the resulting Cell, or <tt>null</tt> if the operation cannot be |
| * realized |
| */ |
| @Override |
| public Cell merge(Cell m, Cell e) { |
| if (m.cmd == e.cmd && m.ref == e.ref && m.skip == e.skip) { |
| Cell c = new Cell(m); |
| c.cnt += e.cnt; |
| return c; |
| } else { |
| return null; |
| } |
| } |
| } |