root / trunk / libraries / libRaster / src / org / gvsig / raster / datastruct / serializer / NoDataRmfSerializer.java @ 20868
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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) 2005 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.datastruct.serializer; |
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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.RasterLibrary; |
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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.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 un valor NoData y obtener el valor desde un 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 un valor NoData es la siguiente:
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* </P>
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* <P>
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* <NoData value="-99.999"><BR>
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* </NoData><BR>
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*
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* @version 18/12/2007
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* @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)
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*/
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public class NoDataRmfSerializer extends ClassSerializer { |
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public class NoDataObject { |
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double value = 0; |
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int type = -1; |
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/**
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* @return the noData
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*/
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public double getValue() { |
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return value;
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} |
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/**
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* @param noData the noData to set
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*/
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public void setValue(double noData) { |
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this.value = noData;
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} |
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/**
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* @return the enabled
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*/
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public int getType() { |
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return type;
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} |
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/**
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* @param enabled the enabled to set
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*/
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public void setType(int type) { |
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this.type = type;
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} |
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} |
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private final String MAIN_TAG = "NoData"; |
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private NoDataObject noData = new NoDataObject(); |
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/**
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* Constructor. Asigna el valor NoData a serializar
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* @param noData Valor NoData
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* @param type Tipo de NoData
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* @param dataType Tipo de datos de la capa
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*/
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public NoDataRmfSerializer(double noData, int type, int dataType) { |
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switch (dataType) {
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case IBuffer.TYPE_BYTE:
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this.noData.setValue((byte) noData); |
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this.noData.setType(RasterLibrary.NODATATYPE_USER);
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break;
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case IBuffer.TYPE_FLOAT:
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this.noData.setValue((float) noData); |
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this.noData.setType(RasterLibrary.NODATATYPE_USER);
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break;
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case IBuffer.TYPE_USHORT:
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case IBuffer.TYPE_INT:
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this.noData.setValue((int) noData); |
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this.noData.setType(RasterLibrary.NODATATYPE_USER);
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break;
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case IBuffer.TYPE_SHORT:
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this.noData.setValue((short) noData); |
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this.noData.setType(RasterLibrary.NODATATYPE_USER);
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break;
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default:
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this.noData.setValue(noData);
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this.noData.setType(type);
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break;
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} |
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if (type == RasterLibrary.NODATATYPE_DISABLED)
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this.noData.setType(type);
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} |
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/**
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* Constructor. Asigna el valor NoData a serializar
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* @param noData Valor NoData
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* @param type Tipo de NoData
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*/
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public NoDataRmfSerializer(double noData, int type) { |
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this(noData, type, IBuffer.TYPE_DOUBLE);
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} |
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/**
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* Constructor.
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*/
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public NoDataRmfSerializer() {
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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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/*
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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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if (noData.getType() == -1) |
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return null; |
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if (noData.getType() == RasterLibrary.NODATATYPE_LAYER)
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return null; |
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return noData;
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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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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().equals("Data")) { |
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for (int i = 0; i < parser.getAttributeCount(); i++) { |
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if (parser.getAttributeName(i).equals("value")) { |
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noData.setValue(Double.parseDouble((String) parser.getAttributeValue(i))); |
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} |
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if (parser.getAttributeName(i).equals("type")) { |
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noData.setType(Integer.parseInt((String) parser.getAttributeValue(i))); |
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} |
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} |
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} |
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} |
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tag = parser.next(); |
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} |
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} |
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reader.close(); |
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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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} |
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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() throws IOException { |
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StringBuffer b = new StringBuffer(); |
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if (noData.getType() == RasterLibrary.NODATATYPE_LAYER)
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return ""; |
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b.append("<" + MAIN_TAG + ">\n"); |
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b.append("\t<Data");
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if (noData.getType() == RasterLibrary.NODATATYPE_USER)
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b.append(" value=\"" + noData.getValue() + "\""); |
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b.append(" type=\"" + noData.getType() + "\"/>\n"); |
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b.append("</" + MAIN_TAG + ">\n"); |
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return b.toString();
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} |
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} |