gvsig-raster / org.gvsig.raster / branches / org.gvsig.raster.2.4 / org.gvsig.raster / org.gvsig.raster.gdal / org.gvsig.raster.gdal.provider / src / main / java / org / gvsig / raster / gdal / provider / RasterGdalFileSystemServerProviderFactory.java @ 8697
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1 | 6335 | dmartinezizquierdo | package org.gvsig.raster.gdal.provider; |
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2 | |||
3 | import java.io.File; |
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4 | import java.util.Arrays; |
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5 | import java.util.HashSet; |
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6 | import java.util.Set; |
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7 | |||
8 | import org.apache.commons.io.FilenameUtils; |
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9 | import org.gdal.gdal.Driver; |
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10 | import org.gdal.gdal.gdal; |
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11 | import org.gdal.gdalconst.gdalconstConstants; |
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12 | import org.gvsig.fmap.dal.DataServerExplorer; |
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13 | import org.gvsig.fmap.dal.exception.InitializeException; |
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14 | import org.gvsig.fmap.dal.serverexplorer.filesystem.spi.FilesystemServerExplorerProvider; |
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15 | import org.gvsig.fmap.dal.serverexplorer.filesystem.spi.FilesystemServerExplorerProviderFactory; |
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16 | |||
17 | /**
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18 | * Factory for GDAL filesystem providers
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19 | * @author dmartinezizquierdo
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20 | *
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21 | */
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22 | public class RasterGdalFileSystemServerProviderFactory |
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23 | implements FilesystemServerExplorerProviderFactory {
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24 | |||
25 | private RasterGdalStoreProviderFactory providerFactory;
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26 | private String newParams; |
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27 | private Set<String> validExtensions; |
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28 | |||
29 | /**
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30 | * Constructor
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31 | * @param providerFactory
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32 | * @param newParams Definition name of the params used to create a new store
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33 | */
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34 | public RasterGdalFileSystemServerProviderFactory(RasterGdalStoreProviderFactory providerFactory, String newParams){ |
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35 | this.providerFactory=providerFactory;
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36 | this.newParams=newParams;
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37 | init(); |
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38 | } |
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39 | |||
40 | private void init(){ |
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41 | this.validExtensions=new HashSet<String>(); |
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42 | String driverExtension=(String)getDriver().GetMetadata_Dict().get(gdalconstConstants.GDAL_DMD_EXTENSION); |
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43 | //At least the driver given extension is always accepted (more can be defined in its parameters)
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44 | // GDAL_DMD_EXTENSION only returns an extension. GDAL_DMD_EXTENSIONS should be used instead in GDAL 2.0.
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45 | // GDAL_DMD_EXTENSIONS returns a list of accepted extensions separated by a blank
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46 | // Meanwhile, most common extensions are added defined in the xml parameters
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47 | if (driverExtension!=null){ |
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48 | validExtensions.add(driverExtension); |
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49 | } |
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50 | } |
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51 | |||
52 | /**
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53 | * Adds valid extensions to be accepted by the driver ({"jpg","jpeg","jp2",...})
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54 | * @param extensions
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55 | */
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56 | public void addAcceptedExtensions(String[] extensions){ |
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57 | if (extensions!=null){ |
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58 | for (String extension:extensions){ |
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59 | validExtensions.add(extension.trim()); |
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60 | } |
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61 | } |
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62 | } |
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63 | |||
64 | @Override
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65 | public FilesystemServerExplorerProvider createProvider() throws InitializeException { |
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66 | return new RasterGdalFileSystemServerProvider(this); |
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67 | } |
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68 | |||
69 | @Override
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70 | public boolean accept(File file) { |
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71 | //If the driver is in the list to be avoided, it will not be opened
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72 | String drvName=providerFactory.getDriver().getShortName();
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73 | if ( Arrays.asList(RasterGdalLibrary.EXCLUDED_OPEN_DRIVERS).contains(drvName) ){ |
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74 | return false; |
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75 | } |
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76 | |||
77 | if (isAcceptedExtension(file)){
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78 | 8697 | omartinez | if (!file.exists()) {
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79 | return true; |
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80 | } |
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81 | 6335 | dmartinezizquierdo | return isAcceptedByDriver(file);
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82 | 8697 | omartinez | |
83 | |||
84 | 6335 | dmartinezizquierdo | } |
85 | |||
86 | return false; |
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87 | } |
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88 | |||
89 | private Driver getDriver(){ |
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90 | return providerFactory.getDriver();
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91 | } |
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92 | |||
93 | /**
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94 | * Return true if the File extension is accepted by the FileSystemServerProvider
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95 | * @param file
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96 | * @return
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97 | */
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98 | private boolean isAcceptedExtension(File file) { |
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99 | if (file!=null){ |
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100 | String extension=FilenameUtils.getExtension(file.getName());
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101 | 6695 | fdiaz | if (validExtensions != null && !validExtensions.isEmpty()) { |
102 | 6335 | dmartinezizquierdo | for (String validExtension : validExtensions) { |
103 | if (validExtension.equalsIgnoreCase(extension)) {
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104 | return true; |
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105 | } |
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106 | } |
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107 | } else {
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108 | return true; |
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109 | } |
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110 | |||
111 | } |
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112 | return false; |
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113 | } |
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114 | |||
115 | /**
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116 | * Returns true if the driver can open the file
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117 | * @param file
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118 | * @return
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119 | */
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120 | private boolean isAcceptedByDriver(File file) { |
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121 | String drvName=getDriver().getShortName();
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122 | |||
123 | Driver openingDriver=null; |
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124 | openingDriver = gdal.IdentifyDriver(file.getAbsolutePath()); |
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125 | |||
126 | if (openingDriver==null){ |
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127 | return false; |
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128 | } |
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129 | String openingDrvName=openingDriver.getShortName();
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130 | return drvName.equalsIgnoreCase(openingDrvName);
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131 | } |
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132 | |||
133 | @Override
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134 | public int allowCreate() { |
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135 | //If the driver is in the list to be avoided, it will not be created
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136 | String drvName=getDriver().getShortName();
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137 | if ( Arrays.asList(RasterGdalLibrary.EXCLUDED_STORE_DRIVERS).contains(drvName) ){ |
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138 | return NO;
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139 | } |
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140 | String allowCreate=(String)getDriver().GetMetadata_Dict().get(gdalconstConstants.GDAL_DCAP_CREATE); |
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141 | String allowCreateCopy=(String)getDriver().GetMetadata_Dict().get(gdalconstConstants.GDAL_DCAP_CREATECOPY); |
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142 | |||
143 | if ( (allowCreate!=null && allowCreate.equalsIgnoreCase("YES")) || |
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144 | (allowCreateCopy!=null && allowCreateCopy.equalsIgnoreCase("YES")) ){ |
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145 | return YES;
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146 | }else{
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147 | return NO;
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148 | } |
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149 | } |
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150 | |||
151 | @Override
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152 | public String getName() { |
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153 | return providerFactory.getName();
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154 | } |
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155 | |||
156 | @Override
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157 | public String getDescription() { |
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158 | return providerFactory.getDescription();
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159 | } |
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160 | |||
161 | @Override
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162 | public int getMode() { |
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163 | return DataServerExplorer.MODE_RASTER;
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164 | } |
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165 | |||
166 | @Override
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167 | public boolean isMode(int mode) { |
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168 | return getMode()==mode;
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169 | } |
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170 | |||
171 | String getNewParamsDefinitionName(){
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172 | return newParams;
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173 | } |
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174 | |||
175 | /**
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176 | * Store Provider factory to be used to create a new store
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177 | * @return RasterGdalStoreProviderFactory
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178 | */
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179 | public RasterGdalStoreProviderFactory getProviderFactory(){
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180 | return this.providerFactory; |
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181 | } |
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182 | } |