root / trunk / libraries / libGPE-GML / src / org / gvsig / gpe / gml / GMLReader.java @ 11171
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1 | 10550 | csanchez | package org.gvsig.gpe.gml; |
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2 | |||
3 | import java.awt.geom.Rectangle2D; |
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4 | import java.io.File; |
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5 | import java.io.FileNotFoundException; |
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6 | import java.io.IOException; |
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7 | |||
8 | import org.gvsig.exceptions.BaseException; |
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9 | import org.gvsig.exceptions.ListBaseException; |
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10 | import org.gvsig.gpe.gml.exceptions.GMLException; |
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11 | import org.gvsig.gpe.gml.exceptions.GMLParserException; |
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12 | import org.gvsig.gpe.gml.factories.FeaturesParserFactory; |
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13 | import org.gvsig.gpe.gml.factories.IGeometriesFactory; |
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14 | import org.gvsig.gpe.gml.factories.XMLParserFactory; |
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15 | import org.gvsig.gpe.gml.schemas.XMLSchemaManager; |
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16 | import org.gvsig.gpe.gml.schemas.XMLSchemaParser; |
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17 | import org.gvsig.gpe.gml.warnings.GMLWarningInfo; |
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18 | import org.xmlpull.v1.XmlPullParserException; |
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19 | |||
20 | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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21 | *
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22 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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23 | *
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24 | * This program is free software; you can redistribute it and/or
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25 | * modify it under the terms of the GNU General Public License
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26 | * as published by the Free Software Foundation; either version 2
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27 | * of the License, or (at your option) any later version.
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28 | *
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29 | * This program is distributed in the hope that it will be useful,
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30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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32 | * GNU General Public License for more details.
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33 | *
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34 | * You should have received a copy of the GNU General Public License
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35 | * along with this program; if not, write to the Free Software
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36 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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37 | *
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38 | * For more information, contact:
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39 | *
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40 | * Generalitat Valenciana
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41 | * Conselleria d'Infraestructures i Transport
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42 | * Av. Blasco Ib??ez, 50
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43 | * 46010 VALENCIA
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44 | * SPAIN
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45 | *
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46 | * +34 963862235
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47 | * gvsig@gva.es
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48 | * www.gvsig.gva.es
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49 | *
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50 | * or
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51 | *
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52 | * IVER T.I. S.A
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53 | * Salamanca 50
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54 | * 46005 Valencia
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55 | * Spain
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56 | *
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57 | * +34 963163400
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58 | * dac@iver.es
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59 | */
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60 | /* CVS MESSAGES:
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61 | *
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62 | * $Id$
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63 | * $Log$
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64 | * Revision 1.1 2007-02-28 11:48:31 csanchez
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65 | * *** empty log message ***
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66 | *
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67 | * Revision 1.1 2007/02/20 10:53:20 jorpiell
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68 | * A?adidos los proyectos de kml y gml antiguos
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69 | *
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70 | * Revision 1.4 2007/01/15 13:11:00 csanchez
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71 | * Sistema de Warnings y Excepciones adaptado a BasicException
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72 | *
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73 | * Revision 1.3 2006/12/22 11:25:44 csanchez
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74 | * Nuevo parser GML 2.x para gml's sin esquema
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75 | *
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76 | * Revision 1.2 2006/11/06 12:15:11 jorpiell
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77 | * A?adido un constructor con un par?metro booleano que se usar? para abrir gml's sin validar el esquema
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78 | *
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79 | * Revision 1.1 2006/08/10 12:00:49 jorpiell
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80 | * Primer commit del driver de Gml
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81 | *
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82 | *
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83 | */
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84 | /**
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85 | * This class must be used to read any GML 2.x file (2.0, 2.1.1
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86 | * 2.1.2). It is able to parse GML features that have a xml complex
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87 | * type with only one level of complexity. More levels and GML 3.x
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88 | * will be supported in next versions.
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89 | *
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90 | * Name: OpenGIS? Geography Markup Language (GML) Implementation Specification,
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91 | * Version: 2.x
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92 | * Project Document: 01-029 (2.0), 02-099 (2.1.1) and 02-069 (v2.1.2)
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93 | *
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94 | * @author Jorge Piera Llodr? (piera_jor@gva.es)
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95 | * @author Carlos S?nchez Peri??n (sanchez_carper@gva.es)
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96 | *
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97 | */
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98 | public class GMLReader { |
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99 | private XMLSchemaManager schemaManager = null; |
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100 | private GMLFeaturesParser featuresParser = null; |
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101 | private FeaturesParserFactory featuresFactory = null; |
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102 | private GMLWarningInfo warnings = null; |
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103 | private File m_File = null; |
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104 | |||
105 | |||
106 | /**
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107 | * Constructor
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108 | * @param file
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109 | * GML File to read
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110 | * @param factory
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111 | * Geometries factory that is used to create the parsed
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112 | * GML geometries
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113 | * @throws Exception
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114 | * @throws FileNotFoundException
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115 | * When the file is not found
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116 | */
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117 | public GMLReader(File file,IGeometriesFactory factory) throws GMLException{ |
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118 | |||
119 | //file to parse...
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120 | this.m_File = file;
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121 | initialize(factory); |
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122 | } |
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123 | |||
124 | /**
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125 | * Initializes the XMLSchemaParser, tries to parse the GML header
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126 | * to obtain the GML version and parses all the needed schemas
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127 | * @param factory
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128 | * Geometries factory that is used to create the parsed
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129 | * GML geometries
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130 | * @throws Exception
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131 | */
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132 | private void initialize(IGeometriesFactory factory) throws GMLException{ |
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133 | |||
134 | warnings = new GMLWarningInfo();
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135 | XMLSchemaParser parser = new XMLParserFactory().createSchemaParser(m_File);
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136 | |||
137 | //Retrieve the header attributes and download and parse the schema
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138 | schemaManager = new XMLSchemaManager(m_File);
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139 | try {
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140 | schemaManager.parse(parser); |
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141 | } catch (XmlPullParserException e) {
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142 | // TODO Auto-generated catch block
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143 | throw new GMLException(m_File.getName(),e); |
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144 | } catch (IOException e) { |
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145 | // TODO Auto-generated catch block
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146 | throw new GMLException(m_File.getName(),e); |
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147 | } |
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148 | |||
149 | //Parse the GML global fields
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150 | featuresFactory = new FeaturesParserFactory();
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151 | try {
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152 | featuresParser = featuresFactory.createParser(getVersion(),factory,parser); |
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153 | } catch (GMLParserException e) {
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154 | throw new GMLException(m_File.getName(),e); |
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155 | } |
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156 | |||
157 | } |
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158 | |||
159 | /**
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160 | * Gets the GML iteartor used to retrieve all the
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161 | * features
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162 | * @param factory
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163 | * Factory to create the geometries
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164 | * @return
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165 | */
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166 | public IGMLFeaturesIterator getFeaturesIterator() throws GMLException{ |
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167 | try {
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168 | return featuresParser.getFeaturesReader();
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169 | } catch (BaseException e) {
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170 | throw new GMLException(e); |
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171 | } |
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172 | } |
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173 | |||
174 | /**
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175 | * @return Returns the version.
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176 | */
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177 | public String getVersion(){ |
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178 | return schemaManager.getVersion();
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179 | } |
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180 | |||
181 | /**
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182 | * @return Returns a list of codes with information to the user about GML parse.
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183 | * @throws ListBaseException
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184 | */
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185 | public ListBaseException getWarnings(){
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186 | if (schemaManager.warnings.areWarnings())
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187 | { |
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188 | warnings.setGMLWarningList(schemaManager.warnings.getGMLWarningList()); |
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189 | } |
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190 | if (featuresFactory.warnings.areWarnings())
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191 | { |
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192 | warnings.setGMLWarningList(featuresFactory.warnings.getGMLWarningList()); |
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193 | } |
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194 | //***********************************************************
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195 | // CUIDADO CON LANZAR LOS WARNINGS, YA VEREMOS COMO LANZARLOS
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196 | //***********************************************************
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197 | return warnings.getGMLWarningList();
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198 | |||
199 | } |
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200 | |||
201 | // /**
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202 | // * @return Returns true if there are warnings parsing the gml file.
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203 | // */
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204 | // public boolean areWarnings(){
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205 | // this.getWarnings();
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206 | // if (warnings.areWarnings())
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207 | // {
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208 | // return true;
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209 | // }
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210 | // return false;
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211 | // }
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212 | |||
213 | /**
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214 | * @return Returns the target namespace.
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215 | */
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216 | public String getTargetNamespace(){ |
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217 | return schemaManager.getTargetNamespace();
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218 | } |
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219 | |||
220 | /**
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221 | * @return Returns the extent.
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222 | */
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223 | public Rectangle2D getExtent(){ |
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224 | return featuresParser.getExtent().getExtent();
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225 | } |
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226 | |||
227 | /**
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228 | * @return Returns the SRS
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229 | */
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230 | public String getSRS(){ |
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231 | return featuresParser.getExtent().getSrs();
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232 | } |
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233 | } |