svn-gvsig-desktop / trunk / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterWriter.java @ 4578
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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 | 4405 | nacho | private static TreeMap supportedExtensions = null; |
46 | protected static TreeMap typeList = new TreeMap(); |
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47 | protected String outFileName = null; |
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48 | protected String inFileName = null; |
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49 | protected int sizeWindowX = 0; |
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50 | protected int sizeWindowY = 0; |
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51 | protected int ulX = 0; |
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52 | protected int ulY = 0; |
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53 | protected PxRaster currentRaster;
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54 | protected IDataWriter dataWriter = null; |
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55 | protected int nBands = 0; |
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56 | protected String ident = null; |
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57 | protected String driver = null; |
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58 | 2809 | nacho | |
59 | /**
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60 | * Registra un formato de escritura
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61 | * @param ext Extensi?n del fichero registrado
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62 | * @param clase Clase que maneja el formato registrado
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63 | */
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64 | public static void registerWriterExtension(String ext, Class clase) { |
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65 | if (supportedExtensions == null) { |
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66 | supportedExtensions = new TreeMap(); |
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67 | } |
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68 | |||
69 | ext = ext.toLowerCase(); |
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70 | System.out.println("Write RASTER: extension '" + ext + "' supported."); |
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71 | supportedExtensions.put(ext, clase); |
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72 | } |
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73 | |||
74 | /**
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75 | 4405 | nacho | * Obtiene la lista de extensiones registradas
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76 | * @return Lista de extensiones registradas o null si no hay ninguna
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77 | */
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78 | public static String[] getDriversExtensions(){ |
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79 | if (supportedExtensions.size() == 0) |
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80 | return null; |
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81 | String[] list = new String[supportedExtensions.size()]; |
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82 | Set values = supportedExtensions.entrySet();
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83 | int i = 0; |
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84 | for (Iterator it=values.iterator(); it.hasNext(); ) { |
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85 | list[i] = (String)((Map.Entry)it.next()).getKey(); |
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86 | i++; |
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87 | } |
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88 | |||
89 | return list;
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90 | } |
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91 | |||
92 | /**
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93 | * Obtiene la lista de tipos de driver
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94 | * @return Lista de tipos de driver registradas o null si no hay ninguno
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95 | */
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96 | public static String[] getDriversType(){ |
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97 | if (typeList.size() == 0) |
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98 | return null; |
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99 | String[] list = new String[typeList.size()]; |
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100 | Set values = typeList.entrySet();
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101 | int i = 0; |
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102 | for (Iterator it=values.iterator(); it.hasNext(); ) { |
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103 | list[i] = (String)((Map.Entry)it.next()).getValue(); |
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104 | i++; |
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105 | } |
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106 | |||
107 | return list;
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108 | } |
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109 | |||
110 | /**
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111 | * Obtiene el tipo de driver a partir de la extensi?n
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112 | * @param ext Extensi?n
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113 | * @return Tipo
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114 | */
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115 | public static String getDriverType(String ext){ |
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116 | return (String)typeList.get(ext); |
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117 | } |
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118 | |||
119 | /**
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120 | 2809 | nacho | * Devuelve el n?mero de drivers soportados
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121 | * @return N?mero de drivers soportados
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122 | */
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123 | public static int getNDrivers() { |
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124 | return supportedExtensions.size();
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125 | } |
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126 | 4405 | nacho | |
127 | 2809 | nacho | /**
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128 | 4405 | nacho | * Devuelve el n?mero de tipos de driver registrados
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129 | * @return N?mero de tipos de driver soportados
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130 | 2809 | nacho | */
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131 | 4405 | nacho | public static int getNTypes() { |
132 | return typeList.size();
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133 | 2809 | nacho | } |
134 | |||
135 | /**
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136 | * Devuelve el identificador del driver
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137 | * @return Identificador del driver
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138 | */
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139 | public String getIdent() { |
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140 | return ident;
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141 | } |
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142 | |||
143 | /**
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144 | * Obtiene el nombre del driver.
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145 | * @return Nombre del driver
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146 | */
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147 | public String getDriverName() { |
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148 | return driver;
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149 | } |
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150 | |||
151 | /**
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152 | 4405 | nacho | *
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153 | * @return
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154 | */
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155 | public String getDriverType() { |
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156 | return driver;
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157 | } |
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158 | |||
159 | /**
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160 | * Factoria para obtener escritores de los distintos tipos de raster.
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161 | *
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162 | * @param fName Nombre del fichero.
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163 | * @return GeoRasterWriter, o null si hay problemas.
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164 | */
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165 | public static GeoRasterWriter getWriter(String fName) { |
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166 | String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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167 | GeoRasterWriter grw = null;
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168 | |||
169 | if (!supportedExtensions.containsKey(ext))
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170 | return grw;
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171 | |||
172 | Class clase = (Class) supportedExtensions.get(ext); |
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173 | Class [] args = {String.class}; |
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174 | try {
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175 | Constructor hazNuevo = clase.getConstructor(args);
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176 | Object [] args2 = {fName}; |
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177 | grw = (GeoRasterWriter) hazNuevo.newInstance(args2); |
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178 | } catch (SecurityException e) { |
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179 | e.printStackTrace(); |
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180 | } catch (NoSuchMethodException e) { |
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181 | e.printStackTrace(); |
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182 | } catch (IllegalArgumentException e) { |
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183 | e.printStackTrace(); |
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184 | } catch (InstantiationException e) { |
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185 | e.printStackTrace(); |
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186 | } catch (IllegalAccessException e) { |
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187 | e.printStackTrace(); |
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188 | } catch (InvocationTargetException e) { |
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189 | e.printStackTrace(); |
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190 | } |
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191 | return grw;
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192 | } |
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193 | |||
194 | /**
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195 | * Factoria para obtener escritores de los distintos tipos de raster.
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196 | *
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197 | * @param fName Nombre del fichero.
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198 | * @return GeoRasterWriter, o null si hay problemas.
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199 | */
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200 | public static GeoRasterWriter getWriter(IDataWriter dataWriter, |
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201 | String outFileName,
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202 | int blockSize,
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203 | int nBands,
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204 | ViewPortData vp, |
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205 | int compresion,
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206 | int outSizeX,
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207 | int outSizeY) {
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208 | String ext = outFileName.toLowerCase().substring(outFileName.lastIndexOf('.')+1); |
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209 | GeoRasterWriter grw = null;
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210 | |||
211 | if (!supportedExtensions.containsKey(ext))
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212 | return grw;
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213 | |||
214 | Class clase = (Class) supportedExtensions.get(ext); |
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215 | Class [] args = {IDataWriter.class, String.class, Integer.class, Integer.class, |
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216 | ViewPortData.class, Integer.class, Integer.class, Integer.class}; |
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217 | try {
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218 | Constructor hazNuevo = clase.getConstructor(args);
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219 | Object [] args2 = {dataWriter, outFileName, new Integer(blockSize), new Integer(nBands), |
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220 | vp, new Integer(compresion), new Integer(outSizeX), new Integer(outSizeY)}; |
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221 | grw = (GeoRasterWriter) hazNuevo.newInstance(args2); |
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222 | } catch (SecurityException e) { |
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223 | e.printStackTrace(); |
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224 | } catch (NoSuchMethodException e) { |
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225 | e.printStackTrace(); |
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226 | } catch (IllegalArgumentException e) { |
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227 | e.printStackTrace(); |
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228 | } catch (InstantiationException e) { |
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229 | e.printStackTrace(); |
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230 | } catch (IllegalAccessException e) { |
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231 | e.printStackTrace(); |
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232 | } catch (InvocationTargetException e) { |
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233 | e.printStackTrace(); |
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234 | } |
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235 | return grw;
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236 | } |
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237 | |||
238 | /**
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239 | 2809 | nacho | * Asigna propiedades al driver a partir de un vector de
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240 | * strings donde cada elemento tiene la estructura de
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241 | * propiedad=valor.
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242 | * @param props Propiedades
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243 | */
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244 | public abstract void setProps(String[] props); |
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245 | |||
246 | /**
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247 | * Realiza la funci?n de compresi?n a partir de un GeoRasterFile.
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248 | * @throws IOException
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249 | */
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250 | public abstract void fileWrite() throws IOException; |
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251 | |||
252 | /**
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253 | * Realiza la funci?n de compresi?n a partir de los datos pasados por el cliente.
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254 | * @throws IOException
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255 | */
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256 | public abstract void dataWrite() throws IOException; |
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257 | |||
258 | /**
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259 | * Cierra el driver
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260 | */
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261 | public abstract void writeClose(); |
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262 | 4405 | nacho | |
263 | /**
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264 | * Cancela el grabado de datos
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265 | */
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266 | public abstract void writeCancel(); |
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267 | 2809 | nacho | |
268 | /**
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269 | * Devuelve la configuraci?n de la ventana de dialogo
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270 | * para las propiedades del driver de escritura que se est? tratando.
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271 | * @return Texto XML con las propiedades
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272 | */
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273 | public abstract String getXMLPropertiesDialog(); |
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274 | } |