svn-gvsig-desktop / tags / v1_0_2_Build_914 / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterWriter.java @ 12200
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| 1 | 2809 | nacho | /*
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| 2 | * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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| 3 | *
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| 4 | * Copyright (C) 2004-5.
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | * as published by the Free Software Foundation; either version 2
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| 9 | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 19 | *
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| 20 | * For more information, contact:
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| 21 | *
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| 22 | * cresques@gmail.com
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| 23 | */
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| 24 | package org.cresques.io; |
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| 25 | |||
| 26 | import java.io.IOException; |
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| 27 | 4405 | nacho | import java.lang.reflect.Constructor; |
| 28 | import java.lang.reflect.InvocationTargetException; |
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| 29 | import java.util.Iterator; |
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| 30 | import java.util.Map; |
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| 31 | import java.util.Set; |
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| 32 | 2809 | nacho | import java.util.TreeMap; |
| 33 | |||
| 34 | 4405 | nacho | import org.cresques.geo.ViewPortData; |
| 35 | import org.cresques.px.PxRaster; |
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| 36 | 2809 | nacho | |
| 37 | 4405 | nacho | |
| 38 | 2809 | nacho | /**
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| 39 | * Clase abstracta de la que heredan los drivers de escritura. Tiene los
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| 40 | * m?todos abstractos que debe implementar cualquier driver de escritura
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| 41 | * y las funcionalidades y opciones soportadas comunes a todos ellos.
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| 42 | * @author Nacho Brodin (brodin_ign@gva.es)
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| 43 | */
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| 44 | public abstract class GeoRasterWriter { |
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| 45 | 6006 | nacho | |
| 46 | public static int blockSizeDefault = 256; |
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| 47 | |||
| 48 | private static TreeMap supportedExtensions = null; |
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| 49 | 4405 | nacho | protected static TreeMap typeList = new TreeMap(); |
| 50 | protected String outFileName = null; |
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| 51 | protected String inFileName = null; |
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| 52 | protected int sizeWindowX = 0; |
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| 53 | protected int sizeWindowY = 0; |
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| 54 | protected int ulX = 0; |
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| 55 | protected int ulY = 0; |
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| 56 | protected PxRaster currentRaster;
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| 57 | protected IDataWriter dataWriter = null; |
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| 58 | protected int nBands = 0; |
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| 59 | protected String ident = null; |
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| 60 | protected String driver = null; |
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| 61 | 6006 | nacho | |
| 62 | 2809 | nacho | /**
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| 63 | * Registra un formato de escritura
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| 64 | * @param ext Extensi?n del fichero registrado
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| 65 | * @param clase Clase que maneja el formato registrado
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| 66 | */
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| 67 | public static void registerWriterExtension(String ext, Class clase) { |
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| 68 | if (supportedExtensions == null) { |
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| 69 | supportedExtensions = new TreeMap(); |
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| 70 | } |
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| 71 | |||
| 72 | ext = ext.toLowerCase(); |
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| 73 | System.out.println("Write RASTER: extension '" + ext + "' supported."); |
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| 74 | supportedExtensions.put(ext, clase); |
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| 75 | } |
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| 76 | |||
| 77 | /**
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| 78 | 4405 | nacho | * Obtiene la lista de extensiones registradas
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| 79 | * @return Lista de extensiones registradas o null si no hay ninguna
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| 80 | */
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| 81 | public static String[] getDriversExtensions(){ |
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| 82 | if (supportedExtensions.size() == 0) |
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| 83 | return null; |
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| 84 | String[] list = new String[supportedExtensions.size()]; |
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| 85 | Set values = supportedExtensions.entrySet();
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| 86 | int i = 0; |
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| 87 | for (Iterator it=values.iterator(); it.hasNext(); ) { |
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| 88 | list[i] = (String)((Map.Entry)it.next()).getKey(); |
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| 89 | i++; |
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| 90 | } |
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| 91 | |||
| 92 | return list;
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| 93 | } |
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| 94 | |||
| 95 | /**
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| 96 | * Obtiene la lista de tipos de driver
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| 97 | * @return Lista de tipos de driver registradas o null si no hay ninguno
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| 98 | */
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| 99 | public static String[] getDriversType(){ |
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| 100 | if (typeList.size() == 0) |
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| 101 | return null; |
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| 102 | String[] list = new String[typeList.size()]; |
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| 103 | Set values = typeList.entrySet();
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| 104 | int i = 0; |
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| 105 | for (Iterator it=values.iterator(); it.hasNext(); ) { |
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| 106 | list[i] = (String)((Map.Entry)it.next()).getValue(); |
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| 107 | i++; |
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| 108 | } |
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| 109 | |||
| 110 | return list;
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| 111 | } |
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| 112 | |||
| 113 | /**
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| 114 | * Obtiene el tipo de driver a partir de la extensi?n
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| 115 | * @param ext Extensi?n
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| 116 | * @return Tipo
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| 117 | */
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| 118 | public static String getDriverType(String ext){ |
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| 119 | return (String)typeList.get(ext); |
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| 120 | } |
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| 121 | |||
| 122 | /**
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| 123 | 2809 | nacho | * Devuelve el n?mero de drivers soportados
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| 124 | * @return N?mero de drivers soportados
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| 125 | */
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| 126 | public static int getNDrivers() { |
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| 127 | return supportedExtensions.size();
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| 128 | } |
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| 129 | 4405 | nacho | |
| 130 | 2809 | nacho | /**
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| 131 | 4405 | nacho | * Devuelve el n?mero de tipos de driver registrados
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| 132 | * @return N?mero de tipos de driver soportados
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| 133 | 2809 | nacho | */
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| 134 | 4405 | nacho | public static int getNTypes() { |
| 135 | return typeList.size();
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| 136 | 2809 | nacho | } |
| 137 | |||
| 138 | /**
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| 139 | * Devuelve el identificador del driver
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| 140 | * @return Identificador del driver
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| 141 | */
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| 142 | public String getIdent() { |
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| 143 | return ident;
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| 144 | } |
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| 145 | |||
| 146 | /**
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| 147 | * Obtiene el nombre del driver.
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| 148 | * @return Nombre del driver
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| 149 | */
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| 150 | public String getDriverName() { |
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| 151 | return driver;
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| 152 | } |
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| 153 | |||
| 154 | /**
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| 155 | 4405 | nacho | *
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| 156 | * @return
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| 157 | */
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| 158 | public String getDriverType() { |
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| 159 | return driver;
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| 160 | } |
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| 161 | |||
| 162 | /**
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| 163 | * Factoria para obtener escritores de los distintos tipos de raster.
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| 164 | *
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| 165 | * @param fName Nombre del fichero.
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| 166 | * @return GeoRasterWriter, o null si hay problemas.
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| 167 | */
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| 168 | public static GeoRasterWriter getWriter(String fName) { |
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| 169 | String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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| 170 | GeoRasterWriter grw = null;
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| 171 | |||
| 172 | if (!supportedExtensions.containsKey(ext))
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| 173 | return grw;
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| 174 | |||
| 175 | Class clase = (Class) supportedExtensions.get(ext); |
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| 176 | Class [] args = {String.class}; |
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| 177 | try {
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| 178 | Constructor hazNuevo = clase.getConstructor(args);
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| 179 | Object [] args2 = {fName}; |
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| 180 | grw = (GeoRasterWriter) hazNuevo.newInstance(args2); |
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| 181 | } catch (SecurityException e) { |
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| 182 | e.printStackTrace(); |
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| 183 | } catch (NoSuchMethodException e) { |
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| 184 | e.printStackTrace(); |
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| 185 | } catch (IllegalArgumentException e) { |
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| 186 | e.printStackTrace(); |
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| 187 | } catch (InstantiationException e) { |
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| 188 | e.printStackTrace(); |
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| 189 | } catch (IllegalAccessException e) { |
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| 190 | e.printStackTrace(); |
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| 191 | } catch (InvocationTargetException e) { |
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| 192 | e.printStackTrace(); |
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| 193 | } |
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| 194 | return grw;
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| 195 | } |
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| 196 | |||
| 197 | /**
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| 198 | * Factoria para obtener escritores de los distintos tipos de raster.
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| 199 | *
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| 200 | * @param fName Nombre del fichero.
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| 201 | * @return GeoRasterWriter, o null si hay problemas.
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| 202 | */
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| 203 | public static GeoRasterWriter getWriter(IDataWriter dataWriter, |
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| 204 | String outFileName,
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| 205 | int blockSize,
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| 206 | int nBands,
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| 207 | ViewPortData vp, |
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| 208 | int compresion,
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| 209 | int outSizeX,
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| 210 | 10623 | nacho | int outSizeY,
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| 211 | int dataType) {
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| 212 | 4405 | nacho | String ext = outFileName.toLowerCase().substring(outFileName.lastIndexOf('.')+1); |
| 213 | GeoRasterWriter grw = null;
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| 214 | |||
| 215 | if (!supportedExtensions.containsKey(ext))
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| 216 | return grw;
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| 217 | |||
| 218 | Class clase = (Class) supportedExtensions.get(ext); |
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| 219 | Class [] args = {IDataWriter.class, String.class, Integer.class, Integer.class, |
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| 220 | ViewPortData.class, Integer.class, Integer.class, Integer.class}; |
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| 221 | try {
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| 222 | Constructor hazNuevo = clase.getConstructor(args);
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| 223 | Object [] args2 = {dataWriter, outFileName, new Integer(blockSize), new Integer(nBands), |
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| 224 | vp, new Integer(compresion), new Integer(outSizeX), new Integer(outSizeY)}; |
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| 225 | grw = (GeoRasterWriter) hazNuevo.newInstance(args2); |
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| 226 | } catch (SecurityException e) { |
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| 227 | e.printStackTrace(); |
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| 228 | } catch (NoSuchMethodException e) { |
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| 229 | e.printStackTrace(); |
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| 230 | } catch (IllegalArgumentException e) { |
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| 231 | e.printStackTrace(); |
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| 232 | } catch (InstantiationException e) { |
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| 233 | e.printStackTrace(); |
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| 234 | } catch (IllegalAccessException e) { |
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| 235 | e.printStackTrace(); |
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| 236 | } catch (InvocationTargetException e) { |
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| 237 | e.printStackTrace(); |
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| 238 | } |
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| 239 | return grw;
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| 240 | } |
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| 241 | |||
| 242 | /**
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| 243 | 2809 | nacho | * Asigna propiedades al driver a partir de un vector de
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| 244 | * strings donde cada elemento tiene la estructura de
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| 245 | * propiedad=valor.
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| 246 | * @param props Propiedades
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| 247 | */
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| 248 | public abstract void setProps(String[] props); |
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| 249 | |||
| 250 | /**
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| 251 | * Realiza la funci?n de compresi?n a partir de un GeoRasterFile.
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| 252 | * @throws IOException
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| 253 | */
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| 254 | public abstract void fileWrite() throws IOException; |
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| 255 | |||
| 256 | /**
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| 257 | * Realiza la funci?n de compresi?n a partir de los datos pasados por el cliente.
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| 258 | * @throws IOException
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| 259 | */
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| 260 | public abstract void dataWrite() throws IOException; |
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| 261 | |||
| 262 | /**
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| 263 | * Cierra el driver
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| 264 | */
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| 265 | public abstract void writeClose(); |
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| 266 | 4405 | nacho | |
| 267 | /**
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| 268 | * Cancela el grabado de datos
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| 269 | */
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| 270 | public abstract void writeCancel(); |
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| 271 | 2809 | nacho | |
| 272 | /**
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| 273 | * Devuelve la configuraci?n de la ventana de dialogo
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| 274 | * para las propiedades del driver de escritura que se est? tratando.
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| 275 | * @return Texto XML con las propiedades
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| 276 | */
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| 277 | public abstract String getXMLPropertiesDialog(); |
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| 278 | } |