Source Code Cross Referenced for SubtractionOperation.java in  » GIS » openjump » de » fho » jump » pirol » utilities » FormulaParsing » Operations » Java Source Code / Java DocumentationJava Source Code and Java Documentation

01:        /*
02:         * Created on 23.06.2005 for PIROL
03:         *
04:         * SVN header information:
05:         *  $Author: javamap $
06:         *  $Rev: 856 $
07:         *  $Date: 2007-06-18 21:15:27 -0700 (Mon, 18 Jun 2007) $
08:         *  $Id: SubtractionOperation.java 856 2007-06-19 04:15:27Z javamap $
09:         */
10:        package de.fho.jump.pirol.utilities.FormulaParsing.Operations;
11:
12:        import com.vividsolutions.jump.feature.Feature;
13:
14:        import de.fho.jump.pirol.utilities.FormulaParsing.FormulaValue;
15:
16:        /**
17:         * Class to handle subtractions within a formula.
18:         *
19:         * @author Ole Rahn
20:         * <br>
21:         * <br>FH Osnabr&uuml;ck - University of Applied Sciences Osnabr&uuml;ck,
22:         * <br>Project: PIROL (2005),
23:         * <br>Subproject: Daten- und Wissensmanagement
24:         * 
25:         * @version $Rev: 856 $
26:         * 
27:         */
28:        public class SubtractionOperation extends GenericOperation {
29:
30:            /**
31:             *@inheritDoc
32:             */
33:            public SubtractionOperation(FormulaValue value1, FormulaValue value2) {
34:                super (value1, value2);
35:                this .opString = "-";
36:            }
37:
38:            /**
39:             * Returns the subtracted values of the sub-values or sub-operations of this operation
40:             *@param feature
41:             *@return subtracted values of the sub-values or sub-operations
42:             */
43:            public double getValue(Feature feature) {
44:                return this.value1.getValue(feature)
45:                        - this.value2.getValue(feature);
46:            }
47:
48:        }