--- /dev/null
+/*
+ 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;
+ }
+ }
+}
fnp / pylucene.git / blobdiff