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1 /* DocuFileset -- digilib image file info class.
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2
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3 Digital Image Library servlet components
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4
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5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de)
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2 of the License, or (at your
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10 option) any later version.
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11
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12 Please read license.txt for the full details. A copy of the GPL
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13 may be found at http://www.gnu.org/copyleft/lgpl.html
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 */
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20 package digilib.io;
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21
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91
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22 import java.util.ArrayList;
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23 import java.util.HashMap;
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24 import java.util.ListIterator;
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86
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25
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26 /**
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27 * @author casties
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28 */
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29 public class DocuFileset {
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30
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91
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31 // list of files
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32 private ArrayList list = null;
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33 // metadata
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34 private HashMap fileMeta = null;
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35 // parent directory
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36 private DocuDirectory parent = null;
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37
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91
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38 /*
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39 * constructors
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40 */
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41
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42 public DocuFileset(int initialCapacity) {
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43 list = new ArrayList(initialCapacity);
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44 }
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45
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46 /*
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47 * other stuff
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48 */
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49
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50 /** Adds a DocuFile to this Fileset.
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51 *
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52 * The files should be added in the order of lower resolutions. The first
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53 * file is considered the hires "original".
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54 *
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55 * @param f file to add
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56 * @return true (always)
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57 */
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58 public boolean add(DocuFile f) {
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59 f.setParent(this);
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60 return list.add(f);
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61 }
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91
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62
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63 /** The number of image files in this Fileset.
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64 *
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65 * @return number of image files
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66 */
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67 public int size() {
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68 return (list != null) ? list.size() : 0;
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69 }
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70
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71 /** Get the DocuFile at the index.
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72 *
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73 * @param index
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74 * @return
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75 */
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76 public DocuFile get(int index) {
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77 return (DocuFile) list.get(index);
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78 }
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79
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80
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81 /** Get an Iterator for this Fileset starting at the highest resolution
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82 * images.
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83 *
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84 * @return
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85 */
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86 public ListIterator getHiresIterator() {
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87 return list.listIterator();
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86
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88 }
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91
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89
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90 /** Get an Iterator for this Fileset starting at the lowest resolution
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91 * images.
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92 *
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93 * The Iterator starts at the last element, so you have to use it backwards
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94 * with hasPrevious() and previous().
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95 *
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96 * @return
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97 */
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98 public ListIterator getLoresIterator() {
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99 return list.listIterator(list.size());
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100 }
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101
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102 /** Reads meta-data for this Fileset if there is any.
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103 * (not yet implemented)
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104 */
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105 public void checkMeta() {
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106 // check for file metadata...
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107 }
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108
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109 /** The name of the (original) image file.
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110 *
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111 * @return
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112 */
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113 public String getName() {
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114 if (!list.isEmpty()) {
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115 return ((DocuFile) list.get(0)).getName();
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116 }
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117 return null;
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118 }
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119
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120 /** Returns the parent DocuDirectory.
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121 * @return DocuDirectory
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122 */
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123 public DocuDirectory getParent() {
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124 return parent;
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125 }
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126
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127 /**
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128 * Sets the parent.
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129 * @param parent The parent to set
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130 */
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131 public void setParent(DocuDirectory parent) {
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132 this.parent = parent;
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133 }
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134
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135 /** Returns the meta-data for this fileset.
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136 *
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137 * @return HashMap
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138 */
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139 public HashMap getFileMeta() {
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140 return fileMeta;
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141 }
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142
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143 /**
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144 * Sets the fileMeta.
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145 * @param fileMeta The fileMeta to set
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146 */
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147 public void setFileMeta(HashMap fileMeta) {
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148 this.fileMeta = fileMeta;
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149 }
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150
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86
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151 }
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