5.0 Source Code

Committing 5.0 Source Code

src/main/java/com/unicenta/pos/ticket/Signumprovider.java

@@ -0,0 +1,68 @@
+//    uniCenta oPOS  - Touch Friendly Point Of Sale
+//    Copyright (c) 2009-2017 uniCenta
+//    https://unicenta.com
+//
+//    This file is part of uniCenta oPOS
+//
+//    uniCenta oPOS is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//   uniCenta oPOS is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with uniCenta oPOS.  If not, see <http://www.gnu.org/licenses/>.
+
+package com.unicenta.pos.ticket;
+
+import java.util.*;
+
+/**
+ *
+ * @author JG uniCenta
+ */
+public class Signumprovider {
+    
+    private Set m_positives = new HashSet();
+    private Set m_negatives = new HashSet();
+    
+    /** Creates a new instance of Signumprovider */
+    public Signumprovider() {
+    }
+    
+    /**
+     *
+     * @param key
+     */
+    public void addPositive(Object key) {
+        m_positives.add(key);
+    }
+    
+    /**
+     *
+     * @param key
+     */
+    public void addNegative(Object key) {
+        m_negatives.add(key);
+    }
+    
+    /**
+     *
+     * @param key
+     * @param value
+     * @return
+     */
+    public Double correctSignum(Object key, Double value) {
+        if (m_positives.contains(key)) {
+            return value.doubleValue() < 0.0 ? new Double(-value.doubleValue()) : value;
+        } else if (m_negatives.contains(key)) {
+            return value.doubleValue() > 0.0 ? new Double(-value.doubleValue()) : value;
+        } else {
+            return value;
+        }        
+    }    
+}