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/* Copyright 2016 Software Freedom Conservancy Inc.
*
* This software is licensed under the GNU Lesser General Public License
* (version 2.1 or later). See the COPYING file in this distribution.
*/
namespace DataImports.FSpot.Db {
private class FSpotBehaviorEntry {
private Utils.VersionNumber version;
private FSpotTableBehavior behavior;
public FSpotBehaviorEntry(Utils.VersionNumber version, FSpotTableBehavior behavior) {
this.version = version;
this.behavior = behavior;
}
public Utils.VersionNumber get_version() {
return version;
}
public FSpotTableBehavior get_behavior() {
return behavior;
}
}
/**
* A class that consolidates the behavior of all F-Spot tables (apart from meta)
* and is the one place to check whether the database version is supported.
*/
public class FSpotDatabaseBehavior : Object {
// Minimum unsupported version: any database from that version and above
// is not supported as it's too new and support has not been provided
// In practice, the code may work with future versions but this cannot be
// guaranteed as it hasn't been tested so it's probably better to just
// bomb out at that point rather than risk importing incorrect data
public static Utils.VersionNumber MIN_UNSUPPORTED_VERSION =
new Utils.VersionNumber({ 19 });
private static Gee.Map<string, Gee.List<FSpotBehaviorEntry>> behavior_map;
private FSpotTableBehavior<FSpotPhotoRow> photos_behavior;
private FSpotTableBehavior<FSpotTagRow> tags_behavior;
private FSpotTableBehavior<FSpotPhotoTagRow> photo_tags_behavior;
private FSpotTableBehavior<FSpotPhotoVersionRow> photo_versions_behavior;
private FSpotTableBehavior<FSpotRollRow> rolls_behavior;
public static void create_behavior_map() {
behavior_map = new Gee.HashMap<string, Gee.List<FSpotBehaviorEntry>>();
// photos table
Gee.List<FSpotBehaviorEntry> photos_list = new Gee.ArrayList<FSpotBehaviorEntry>();
// v0-4
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 0 }),
FSpotPhotosV0Behavior.get_instance()
));
// v5-6
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 5 }),
FSpotPhotosV5Behavior.get_instance()
));
// v7-10
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 7 }),
FSpotPhotosV7Behavior.get_instance()
));
// v11-15
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 11 }),
FSpotPhotosV11Behavior.get_instance()
));
// v16
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 16 }),
FSpotPhotosV16Behavior.get_instance()
));
// v17
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 17 }),
FSpotPhotosV17Behavior.get_instance()
));
// v18+
photos_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 18 }),
FSpotPhotosV18Behavior.get_instance()
));
behavior_map.set(FSpotPhotosTable.TABLE_NAME, photos_list);
// tags table
Gee.List<FSpotBehaviorEntry> tags_list = new Gee.ArrayList<FSpotBehaviorEntry>();
// v0+
tags_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 0 }),
FSpotTagsV0Behavior.get_instance()
));
behavior_map.set(FSpotTagsTable.TABLE_NAME, tags_list);
// photo_tags table
Gee.List<FSpotBehaviorEntry> photo_tags_list = new Gee.ArrayList<FSpotBehaviorEntry>();
// v0+
photo_tags_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 0 }),
FSpotPhotoTagsV0Behavior.get_instance()
));
behavior_map.set(FSpotPhotoTagsTable.TABLE_NAME, photo_tags_list);
// photo_versions table
Gee.List<FSpotBehaviorEntry> photo_versions_list = new Gee.ArrayList<FSpotBehaviorEntry>();
// v0-8
photo_versions_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 0 }),
FSpotPhotoVersionsV0Behavior.get_instance()
));
// v9-15
photo_versions_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 9 }),
FSpotPhotoVersionsV9Behavior.get_instance()
));
// v16
photo_versions_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 16 }),
FSpotPhotoVersionsV16Behavior.get_instance()
));
// v17
photo_versions_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 17 }),
FSpotPhotoVersionsV17Behavior.get_instance()
));
// v18+
photo_versions_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 18 }),
FSpotPhotoVersionsV18Behavior.get_instance()
));
behavior_map.set(FSpotPhotoVersionsTable.TABLE_NAME, photo_versions_list);
// rolls table
Gee.List<FSpotBehaviorEntry> rolls_list = new Gee.ArrayList<FSpotBehaviorEntry>();
// v0-4
rolls_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 0 }),
FSpotRollsV0Behavior.get_instance()
));
// v5+
rolls_list.add(new FSpotBehaviorEntry(
new Utils.VersionNumber({ 5 }),
FSpotRollsV5Behavior.get_instance()
));
behavior_map.set(FSpotRollsTable.TABLE_NAME, rolls_list);
}
public static FSpotTableBehavior? find_behavior(string table_name, Utils.VersionNumber version) {
FSpotTableBehavior behavior = null;
Gee.List<FSpotBehaviorEntry> behavior_list = behavior_map.get(table_name);
if (behavior_list != null)
foreach (FSpotBehaviorEntry entry in behavior_list) {
if (version.compare_to(entry.get_version()) >= 0)
behavior = entry.get_behavior();
}
else
warning("Could not find behavior list for table %s", table_name);
return behavior;
}
public FSpotDatabaseBehavior(Utils.VersionNumber version) throws Spit.DataImports.DataImportError {
if (version.compare_to(MIN_UNSUPPORTED_VERSION) >= 0)
throw new Spit.DataImports.DataImportError.UNSUPPORTED_VERSION("Version %s is not yet supported", version.to_string());
FSpotTableBehavior? photos_generic_behavior = find_behavior(FSpotPhotosTable.TABLE_NAME, version);
if (photos_generic_behavior != null)
photos_behavior = photos_generic_behavior as FSpotTableBehavior<FSpotPhotoRow>;
FSpotTableBehavior? tags_generic_behavior = find_behavior(FSpotTagsTable.TABLE_NAME, version);
if (tags_generic_behavior != null)
tags_behavior = tags_generic_behavior as FSpotTableBehavior<FSpotTagRow>;
FSpotTableBehavior? photo_tags_generic_behavior = find_behavior(FSpotPhotoTagsTable.TABLE_NAME, version);
if (photo_tags_generic_behavior != null)
photo_tags_behavior = photo_tags_generic_behavior as FSpotTableBehavior<FSpotPhotoTagRow>;
FSpotTableBehavior? photo_versions_generic_behavior = find_behavior(FSpotPhotoVersionsTable.TABLE_NAME, version);
if (photo_versions_generic_behavior != null)
photo_versions_behavior = photo_versions_generic_behavior as FSpotTableBehavior<FSpotPhotoVersionRow>;
FSpotTableBehavior? rolls_generic_behavior = find_behavior(FSpotRollsTable.TABLE_NAME, version);
if (rolls_generic_behavior != null)
rolls_behavior = rolls_generic_behavior as FSpotTableBehavior<FSpotRollRow>;
if (photos_behavior == null || tags_behavior == null ||
photo_tags_behavior == null || photo_versions_behavior == null ||
rolls_behavior == null
)
throw new Spit.DataImports.DataImportError.UNSUPPORTED_VERSION("Version %s is not supported", version.to_string());
}
public FSpotTableBehavior<FSpotPhotoRow> get_photos_behavior() {
return photos_behavior;
}
public FSpotTableBehavior<FSpotTagRow> get_tags_behavior() {
return tags_behavior;
}
public FSpotTableBehavior<FSpotPhotoTagRow> get_photo_tags_behavior() {
return photo_tags_behavior;
}
public FSpotTableBehavior<FSpotPhotoVersionRow> get_photo_versions_behavior() {
return photo_versions_behavior;
}
public FSpotTableBehavior<FSpotRollRow> get_rolls_behavior() {
return rolls_behavior;
}
}
}
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