svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / shared / StatisticsRmfSerializer.java @ 12307
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.shared; |
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import java.io.IOException; |
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import java.io.Reader; |
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import java.io.StringReader; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.io.rmf.ClassSerializer; |
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import org.gvsig.raster.dataset.io.rmf.ParsingException; |
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import org.gvsig.raster.dataset.properties.DatasetStatistics; |
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import org.kxml2.io.KXmlParser; |
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import org.xmlpull.v1.XmlPullParserException; |
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/**
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* <P>
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* Clase para convertir a XML las estadisticas y obtener las estad?sticas desde XML.
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* Esta clase implementa el interfaz IRmfBlock con los m?todos de escritura y
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* lectura. Estos ser?n utilizados por el gestor de ficheros RMF para escribir y
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* leer datos.
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* </P>
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* <P>
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* La estructura XML de las estad?sticas es la siguiente:
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* </P>
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* <P>
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*\<Statistics\> <BR>
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* \<Max\>0\</Max\><BR>
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* \<SecondMax\>0\</SecondMax\><BR>
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* \<Min\>0\</Min\><BR>
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* \<SecondMin\>0\</SecondMin\><BR>
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* \<Maximun\>0\</Maximun\><BR>
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* \<Minimun\>0\</Minimun\><BR>
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* \<Mean\>0\</Mean\><BR>
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* \<Variance\>0\</Variance\><BR>
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* \<BandCount\>0\</BandCount\><BR>
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* \<TailTrim\>1.0:23 2.0:34 .... \</TailTrim\><BR>
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*\</Statistics\><BR>
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*</P>
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*
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* @version 23/04/2007
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class StatisticsRmfSerializer extends ClassSerializer { |
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//TAGS
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public static final String MAIN_TAG = "Statistics"; |
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public static final String BAND = "Band"; |
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public static final String MIN = "Min"; |
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public static final String MAX = "Max"; |
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public static final String SNDMIN = "SecondMin"; |
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public static final String SNDMAX = "SecondMax"; |
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public static final String MAXIMUN = "Maximun"; |
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public static final String MINIMUN = "Minimun"; |
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public static final String MEAN = "Mean"; |
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public static final String VARIANCE = "Variance"; |
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public static final String BANDCOUNT = "BandCount"; |
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public static final String TAILTRIM = "TailTrim"; |
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public static final String KEY = "Key"; |
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public static final String VALUE = "Value"; |
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private DatasetStatistics stat = null; |
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/**
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* Constructor. Asigna la tabla a serializar.
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* @param ColorTable tabla a convertir en XML
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*/
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public StatisticsRmfSerializer(DatasetStatistics stat) {
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this.stat = stat;
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} |
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/**
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* Constructor.
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*/
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public StatisticsRmfSerializer() {
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} |
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/**
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* Parsea el tag Band para extraer la lista de valores (Values) asociada a una banda.
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* @param parser KXmlParser
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* @return Array de long
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* @throws XmlPullParserException
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* @throws IOException
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*/
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private long[] parserStatBandValues(KXmlParser parser, int band, double[] max, double[] min, double[] sndmax, double[] sndmin, double[] mean, double[] variance) throws XmlPullParserException, IOException { |
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boolean maxOk = false, minOk = false, sndmaxOk = false, sndminOk = false, meanOk = false, varianceOk = false; |
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long[] valueList = null; |
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boolean end = false; |
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int tag = parser.next();
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while (!end) {
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switch(tag) {
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case KXmlParser.START_TAG:
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if(parser.getName() != null) { |
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if (parser.getName().compareTo(MAX) == 0) |
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maxOk = true;
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if (parser.getName().compareTo(MIN) == 0) |
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minOk = true;
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if (parser.getName().compareTo(SNDMAX) == 0) |
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sndmaxOk = true;
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if (parser.getName().compareTo(SNDMIN) == 0) |
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sndminOk = true;
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if (parser.getName().compareTo(MEAN) == 0) |
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meanOk = true;
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if (parser.getName().compareTo(VARIANCE) == 0) |
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varianceOk = true;
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(BAND) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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if(maxOk) {
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max[band] = Double.parseDouble(parser.getText());
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maxOk = false;
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} |
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if(minOk) {
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min[band] = Double.parseDouble(parser.getText());
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minOk = false;
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} |
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if(sndmaxOk) {
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sndmax[band] = Double.parseDouble(parser.getText());
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sndmaxOk = false;
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} |
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if(sndminOk) {
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sndmin[band] = Double.parseDouble(parser.getText());
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sndminOk = false;
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} |
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if(meanOk) {
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mean[band] = Double.parseDouble(parser.getText());
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meanOk = false;
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} |
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if(varianceOk) {
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variance[band] = Double.parseDouble(parser.getText());
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varianceOk = false;
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} |
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break;
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} |
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if (!end)
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tag = parser.next(); |
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} |
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return valueList;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#read(java.lang.String)
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*/
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public void read(String xml) throws ParsingException { |
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int bandCount = 0; |
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double[] max = null; |
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double[] min = null; |
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double[] secondMax = null; |
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double[] secondMin = null; |
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double[] mean = null; |
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double[] variance = null; |
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KXmlParser parser = new KXmlParser();
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Reader reader = new StringReader(xml); |
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try {
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parser.setInput(reader); |
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} catch (XmlPullParserException e) {
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throw new ParsingException(xml); |
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} |
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try {
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int tag = parser.nextTag();
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if ( parser.getEventType() != KXmlParser.END_DOCUMENT ){
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parser.require(KXmlParser.START_TAG, null, MAIN_TAG);
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while(tag != KXmlParser.END_DOCUMENT) {
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switch(tag) {
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case KXmlParser.START_TAG:
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if(parser.getName() != null) { |
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if (parser.getName().compareTo(MAIN_TAG) == 0) { |
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bandCount = Integer.parseInt(parserString(parser, BANDCOUNT, null)); |
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if(max == null) { |
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max = new double[bandCount]; |
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min = new double[bandCount]; |
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secondMax = new double[bandCount]; |
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secondMin = new double[bandCount]; |
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mean = new double[bandCount]; |
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variance = new double[bandCount]; |
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} |
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for (int i = 0; i < bandCount; i++) |
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parserStatBandValues(parser, i, max, min, secondMax, secondMin, mean, variance); |
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} |
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} |
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break;
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case KXmlParser.END_TAG:
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break;
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case KXmlParser.TEXT:
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break;
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} |
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tag = parser.next(); |
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} |
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parser.require(KXmlParser.END_DOCUMENT, null, null); |
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} |
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} catch (XmlPullParserException e) {
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throw new ParsingException(xml); |
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} catch (IOException e) { |
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throw new ParsingException(xml); |
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} |
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if(stat == null) |
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stat = new DatasetStatistics(null); |
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stat.setBandCount(bandCount); |
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stat.setMax(max); |
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stat.setMin(min); |
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stat.setSecondMax(secondMax); |
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stat.setSecondMin(secondMin); |
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stat.setMean(mean); |
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stat.setVariance(variance); |
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stat.setCalculated(true);
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#write()
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*/
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public String write() { |
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StringBuffer b = new StringBuffer(); |
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b.append("<" + MAIN_TAG + ">\n"); |
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putProperty(b, BANDCOUNT, stat.getBandCount(), 1);
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for (int i = 0; i < stat.getBandCount(); i++) { |
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b.append("\t<" + BAND + ">\n"); |
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putProperty(b, MAX, stat.getMax()[i], 2);
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putProperty(b, MIN, stat.getMin()[i], 2);
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putProperty(b, SNDMAX, stat.getSecondMax()[i], 2);
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putProperty(b, SNDMIN, stat.getSecondMin()[i], 2);
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putProperty(b, MEAN, stat.getMean()[i], 2);
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putProperty(b, VARIANCE, stat.getVariance()[i], 2);
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b.append("\t</" + BAND + ">\n"); |
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} |
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for (int i = 0; i < stat.getTailTrimCount(); i++) { |
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b.append("\t<" + TAILTRIM + ">\n"); |
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putProperty(b, KEY, ((Double)stat.getTailTrimValue(i)[0]).doubleValue(), 2); |
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putProperty(b, VALUE, ((Double)stat.getTailTrimValue(i)[1]).doubleValue(), 2); |
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b.append("\t</" + TAILTRIM + ">\n"); |
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} |
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b.append("</" + MAIN_TAG + ">"); |
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return b.toString();
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#getResult()
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*/
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public Object getResult() { |
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return stat;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.io.rmf.IRmfBlock#getMainTag()
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*/
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public String getMainTag() { |
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return MAIN_TAG;
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} |
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} |