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181
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1 /*
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2 * DocuDirent.java -- Abstract directory entry in a DocuDirectory
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3 *
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4 * Digital Image Library servlet components
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5 *
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6 * Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)
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7 *
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8 * This program is free software; you can redistribute it and/or modify it
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9 * under the terms of the GNU General Public License as published by the Free
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10 * Software Foundation; either version 2 of the License, or (at your option)
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11 * any later version.
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12 *
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13 * Please read license.txt for the full details. A copy of the GPL may be found
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14 * at http://www.gnu.org/copyleft/lgpl.html
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15 *
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16 * You should have received a copy of the GNU General Public License along with
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17 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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18 * Place, Suite 330, Boston, MA 02111-1307 USA
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19 *
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159
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20 * Created on 15.09.2003 by casties
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181
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21 *
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159
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22 */
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23 package digilib.io;
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24
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25 import java.io.File;
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26 import java.util.HashMap;
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27
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181
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28 import org.apache.log4j.Logger;
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29
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30 /**
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31 * Abstract directory entry in a DocuDirectory.
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159
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32 *
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33 * @author casties
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181
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34 *
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159
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35 */
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36 public abstract class DocuDirent {
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37
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38 /** the file class of this file */
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181
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39 protected static int fileClass = FileOps.CLASS_NONE;
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159
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40 /** HashMap with metadata */
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41 protected HashMap fileMeta = null;
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42 /** Is the Metadata valid */
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43 protected boolean metaChecked = false;
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44 /** the parent directory */
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45 protected Directory parent = null;
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46
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181
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47 /**
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48 * Checks metadata and does something with it.
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49 *
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159
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50 */
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51 public abstract void checkMeta();
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52
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53 /**
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54 * gets the (default) File
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181
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55 *
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159
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56 * @return
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57 */
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58 public abstract File getFile();
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59
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181
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60 /**
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61 * Reads meta-data for this Fileset if there is any.
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62 *
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159
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63 */
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64 public void readMeta() {
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195
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65 if ((fileMeta != null) || (getFile() == null)) {
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159
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66 // there is already metadata or there is no file
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67 return;
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68 }
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69 // metadata is in the file {filename}.meta
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70 String fn = getFile().getAbsolutePath();
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71 File mf = new File(fn + ".meta");
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72 if (mf.canRead()) {
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73 XMLMetaLoader ml = new XMLMetaLoader();
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74 try {
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75 // read meta file
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76 HashMap meta = ml.loadURL(mf.getAbsolutePath());
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77 if (meta == null) {
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78 return;
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79 }
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80 fileMeta = (HashMap) meta.get(getName());
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81 } catch (Exception e) {
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195
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82 Logger.getLogger(this.getClass()).warn("error reading file .meta", e);
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159
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83 }
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84 }
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85 }
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86
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181
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87 /**
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88 * The name of the file.
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176
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89 *
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181
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90 * If this is a Fileset, the method returns the name of the default file
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176
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91 * (for image filesets the highest resolution file).
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159
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92 *
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93 * @return
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94 */
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95 public String getName() {
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96 File f = getFile();
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97 return (f != null) ? f.getName() : null;
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259
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98 }
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99
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100 /**
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101 * Returns the parent Directory.
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102 *
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103 * @return DocuDirectory
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104 */
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159
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105 public Directory getParent() {
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106 return parent;
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259
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107 }
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108
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109 /**
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110 * Sets the parent Directory.
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111 *
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112 * @param parent
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113 * The parent to set
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114 */
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159
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115 public void setParent(Directory parent) {
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116 this.parent = parent;
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259
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117 }
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118
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119 /**
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120 * Returns the meta-data for this file(set).
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121 *
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122 * @return HashMap
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123 */
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159
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124 public HashMap getFileMeta() {
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125 return fileMeta;
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259
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126 }
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127
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128 /**
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129 * Sets the meta-data for this file(set) .
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130 *
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131 * @param fileMeta
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132 * The fileMeta to set
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133 */
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159
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134 public void setFileMeta(HashMap fileMeta) {
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135 this.fileMeta = fileMeta;
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259
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136 }
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137
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138 /**
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139 * @return
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140 */
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159
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141 public boolean isMetaChecked() {
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142 return metaChecked;
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259
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143 }
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144
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145 /**
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146 * @return
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147 */
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159
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148 public static int getFileClass() {
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149 return fileClass;
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150 }
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151
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152 }
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