svn-gvsig-desktop / tags / v1_0_2_Build_912 / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterWriter.java @ 11422
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/*
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* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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*
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* Copyright (C) 2004-5.
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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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* For more information, contact:
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*
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* cresques@gmail.com
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*/
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package org.cresques.io; |
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import java.io.IOException; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.InvocationTargetException; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Set; |
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import java.util.TreeMap; |
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import org.cresques.geo.ViewPortData; |
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import org.cresques.px.PxRaster; |
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/**
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* Clase abstracta de la que heredan los drivers de escritura. Tiene los
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* m?todos abstractos que debe implementar cualquier driver de escritura
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* y las funcionalidades y opciones soportadas comunes a todos ellos.
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* @author Nacho Brodin (brodin_ign@gva.es)
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*/
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public abstract class GeoRasterWriter { |
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public static int blockSizeDefault = 256; |
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private static TreeMap supportedExtensions = null; |
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protected static TreeMap typeList = new TreeMap(); |
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protected String outFileName = null; |
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protected String inFileName = null; |
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protected int sizeWindowX = 0; |
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protected int sizeWindowY = 0; |
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protected int ulX = 0; |
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protected int ulY = 0; |
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protected PxRaster currentRaster;
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protected IDataWriter dataWriter = null; |
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protected int nBands = 0; |
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protected String ident = null; |
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protected String driver = null; |
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/**
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* Registra un formato de escritura
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* @param ext Extensi?n del fichero registrado
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* @param clase Clase que maneja el formato registrado
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*/
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public static void registerWriterExtension(String ext, Class clase) { |
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if (supportedExtensions == null) { |
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supportedExtensions = new TreeMap(); |
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} |
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ext = ext.toLowerCase(); |
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System.out.println("Write RASTER: extension '" + ext + "' supported."); |
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supportedExtensions.put(ext, clase); |
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} |
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/**
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* Obtiene la lista de extensiones registradas
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* @return Lista de extensiones registradas o null si no hay ninguna
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*/
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public static String[] getDriversExtensions(){ |
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if (supportedExtensions.size() == 0) |
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return null; |
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String[] list = new String[supportedExtensions.size()]; |
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Set values = supportedExtensions.entrySet();
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int i = 0; |
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for (Iterator it=values.iterator(); it.hasNext(); ) { |
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list[i] = (String)((Map.Entry)it.next()).getKey(); |
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i++; |
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} |
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return list;
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} |
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/**
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* Obtiene la lista de tipos de driver
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* @return Lista de tipos de driver registradas o null si no hay ninguno
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*/
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public static String[] getDriversType(){ |
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if (typeList.size() == 0) |
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return null; |
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String[] list = new String[typeList.size()]; |
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Set values = typeList.entrySet();
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int i = 0; |
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for (Iterator it=values.iterator(); it.hasNext(); ) { |
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list[i] = (String)((Map.Entry)it.next()).getValue(); |
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i++; |
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} |
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return list;
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} |
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/**
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* Obtiene el tipo de driver a partir de la extensi?n
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* @param ext Extensi?n
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* @return Tipo
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*/
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public static String getDriverType(String ext){ |
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return (String)typeList.get(ext); |
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} |
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/**
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* Devuelve el n?mero de drivers soportados
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* @return N?mero de drivers soportados
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*/
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public static int getNDrivers() { |
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return supportedExtensions.size();
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} |
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/**
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* Devuelve el n?mero de tipos de driver registrados
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* @return N?mero de tipos de driver soportados
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*/
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public static int getNTypes() { |
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return typeList.size();
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} |
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/**
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* Devuelve el identificador del driver
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* @return Identificador del driver
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*/
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public String getIdent() { |
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return ident;
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} |
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/**
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* Obtiene el nombre del driver.
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* @return Nombre del driver
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*/
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public String getDriverName() { |
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return driver;
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} |
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/**
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*
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* @return
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*/
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public String getDriverType() { |
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return driver;
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} |
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/**
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* Factoria para obtener escritores de los distintos tipos de raster.
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*
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* @param fName Nombre del fichero.
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* @return GeoRasterWriter, o null si hay problemas.
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*/
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public static GeoRasterWriter getWriter(String fName) { |
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String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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GeoRasterWriter grw = null;
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if (!supportedExtensions.containsKey(ext))
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return grw;
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Class clase = (Class) supportedExtensions.get(ext); |
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Class [] args = {String.class}; |
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try {
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Constructor hazNuevo = clase.getConstructor(args);
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Object [] args2 = {fName}; |
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grw = (GeoRasterWriter) hazNuevo.newInstance(args2); |
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} catch (SecurityException e) { |
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e.printStackTrace(); |
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} catch (NoSuchMethodException e) { |
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e.printStackTrace(); |
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} catch (IllegalArgumentException e) { |
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e.printStackTrace(); |
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} catch (InstantiationException e) { |
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e.printStackTrace(); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} catch (InvocationTargetException e) { |
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e.printStackTrace(); |
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} |
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return grw;
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} |
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/**
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* Factoria para obtener escritores de los distintos tipos de raster.
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*
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* @param fName Nombre del fichero.
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* @return GeoRasterWriter, o null si hay problemas.
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*/
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public static GeoRasterWriter getWriter(IDataWriter dataWriter, |
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String outFileName,
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int blockSize,
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int nBands,
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ViewPortData vp, |
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int compresion,
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int outSizeX,
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int outSizeY,
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int dataType) {
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String ext = outFileName.toLowerCase().substring(outFileName.lastIndexOf('.')+1); |
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GeoRasterWriter grw = null;
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if (!supportedExtensions.containsKey(ext))
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return grw;
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Class clase = (Class) supportedExtensions.get(ext); |
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Class [] args = {IDataWriter.class, String.class, Integer.class, Integer.class, |
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ViewPortData.class, Integer.class, Integer.class, Integer.class}; |
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try {
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Constructor hazNuevo = clase.getConstructor(args);
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Object [] args2 = {dataWriter, outFileName, new Integer(blockSize), new Integer(nBands), |
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vp, new Integer(compresion), new Integer(outSizeX), new Integer(outSizeY)}; |
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grw = (GeoRasterWriter) hazNuevo.newInstance(args2); |
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} catch (SecurityException e) { |
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e.printStackTrace(); |
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} catch (NoSuchMethodException e) { |
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e.printStackTrace(); |
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} catch (IllegalArgumentException e) { |
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e.printStackTrace(); |
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} catch (InstantiationException e) { |
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e.printStackTrace(); |
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} catch (IllegalAccessException e) { |
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e.printStackTrace(); |
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} catch (InvocationTargetException e) { |
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e.printStackTrace(); |
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} |
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return grw;
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} |
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/**
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* Asigna propiedades al driver a partir de un vector de
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* strings donde cada elemento tiene la estructura de
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* propiedad=valor.
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* @param props Propiedades
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*/
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public abstract void setProps(String[] props); |
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/**
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* Realiza la funci?n de compresi?n a partir de un GeoRasterFile.
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* @throws IOException
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*/
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public abstract void fileWrite() throws IOException; |
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/**
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* Realiza la funci?n de compresi?n a partir de los datos pasados por el cliente.
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* @throws IOException
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*/
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public abstract void dataWrite() throws IOException; |
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/**
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* Cierra el driver
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*/
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public abstract void writeClose(); |
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/**
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* Cancela el grabado de datos
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*/
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public abstract void writeCancel(); |
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/**
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* Devuelve la configuraci?n de la ventana de dialogo
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* para las propiedades del driver de escritura que se est? tratando.
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* @return Texto XML con las propiedades
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*/
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public abstract String getXMLPropertiesDialog(); |
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} |