svn-gvsig-desktop / tags / v1_0_2_Build_910 / extensions / extGeoProcessing / src / com / iver / cit / gvsig / geoprocess / core / fmap / MaxFunction.java @ 11275
History | View | Annotate | Download (2.53 KB)
| 1 |
/*
|
|---|---|
| 2 |
* Created on 23-feb-2006
|
| 3 |
*
|
| 4 |
* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
| 5 |
*
|
| 6 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
| 7 |
*
|
| 8 |
* This program is free software; you can redistribute it and/or
|
| 9 |
* modify it under the terms of the GNU General Public License
|
| 10 |
* as published by the Free Software Foundation; either version 2
|
| 11 |
* of the License, or (at your option) any later version.
|
| 12 |
*
|
| 13 |
* This program is distributed in the hope that it will be useful,
|
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 16 |
* GNU General Public License for more details.
|
| 17 |
*
|
| 18 |
* You should have received a copy of the GNU General Public License
|
| 19 |
* along with this program; if not, write to the Free Software
|
| 20 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 21 |
*
|
| 22 |
* For more information, contact:
|
| 23 |
*
|
| 24 |
* Generalitat Valenciana
|
| 25 |
* Conselleria d'Infraestructures i Transport
|
| 26 |
* Av. Blasco Ib??ez, 50
|
| 27 |
* 46010 VALENCIA
|
| 28 |
* SPAIN
|
| 29 |
*
|
| 30 |
* +34 963862235
|
| 31 |
* gvsig@gva.es
|
| 32 |
* www.gvsig.gva.es
|
| 33 |
*
|
| 34 |
* or
|
| 35 |
*
|
| 36 |
* IVER T.I. S.A
|
| 37 |
* Salamanca 50
|
| 38 |
* 46005 Valencia
|
| 39 |
* Spain
|
| 40 |
*
|
| 41 |
* +34 963163400
|
| 42 |
* dac@iver.es
|
| 43 |
*/
|
| 44 |
/* CVS MESSAGES:
|
| 45 |
*
|
| 46 |
* $Id: MaxFunction.java 11275 2007-04-19 15:38:13Z $
|
| 47 |
* $Log$
|
| 48 |
* Revision 1.2.2.1 2007-04-17 14:18:32 caballero
|
| 49 |
* cambio MIN_VALUE por NEGATIVE_INFINITY
|
| 50 |
*
|
| 51 |
* Revision 1.2 2006/06/20 18:19:43 azabala
|
| 52 |
* refactorizaci?n para que todos los nuevos geoprocesos cuelguen del paquete impl
|
| 53 |
*
|
| 54 |
* Revision 1.1 2006/05/24 21:12:16 azabala
|
| 55 |
* primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing
|
| 56 |
*
|
| 57 |
* Revision 1.1 2006/02/26 20:55:28 azabala
|
| 58 |
* *** empty log message ***
|
| 59 |
*
|
| 60 |
*
|
| 61 |
*/
|
| 62 |
package com.iver.cit.gvsig.geoprocess.core.fmap; |
| 63 |
|
| 64 |
import com.hardcode.gdbms.engine.values.NumericValue; |
| 65 |
import com.hardcode.gdbms.engine.values.ValueFactory; |
| 66 |
|
| 67 |
/**
|
| 68 |
* * Sumarization function that returns min value of all field values.
|
| 69 |
*
|
| 70 |
* @author azabala
|
| 71 |
*/
|
| 72 |
public class MaxFunction implements SummarizationFunction { |
| 73 |
|
| 74 |
double maxValue = Double.NEGATIVE_INFINITY; |
| 75 |
|
| 76 |
public void process(NumericValue value) { |
| 77 |
double val = value.doubleValue();
|
| 78 |
if (maxValue < val) {
|
| 79 |
maxValue = val; |
| 80 |
} |
| 81 |
} |
| 82 |
|
| 83 |
public NumericValue getSumarizeValue() {
|
| 84 |
if(maxValue == Double.NEGATIVE_INFINITY){ |
| 85 |
//process method wasnt be called
|
| 86 |
return ValueFactory.createValue(0d); |
| 87 |
} |
| 88 |
return ValueFactory.createValue(maxValue);
|
| 89 |
} |
| 90 |
|
| 91 |
public String toString(){ |
| 92 |
return "max"; |
| 93 |
} |
| 94 |
|
| 95 |
public void reset() { |
| 96 |
maxValue = Double.NEGATIVE_INFINITY;
|
| 97 |
|
| 98 |
} |
| 99 |
|
| 100 |
} |