X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/analyzers/stempel/src/java/org/egothor/stemmer/Optimizer2.java

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/stempel/src/java/org/egothor/stemmer/Optimizer2.java b/lucene-java-3.5.0/lucene/contrib/analyzers/stempel/src/java/org/egothor/stemmer/Optimizer2.java
new file mode 100644
index 0000000..ea29667
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/stempel/src/java/org/egothor/stemmer/Optimizer2.java
@@ -0,0 +1,90 @@
+/*
+                    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;
+    }
+  }
+}