/** We expected to find a db file, but nothing was there. Ask. */
private static String getDatabaseLocationWhenExpectedFileWasNotFound(
final String expectedDatabasePath, final IWindowUtils windowUtils) {
LOG.warn("Expected database " + expectedDatabasePath + " not found!");
final int response =
windowUtils.showQuestionMessage(
"Could not find a database file!\nWould you like to initialize a new new (emtpy) one, or locate a database file yourself?\nNote that the database location can be changed at any time.",
new String[] {"New", "Find Existing"},
"No Database Found");
if (response == 0) {
return expectedDatabasePath;
} else {
return chooseDatabaseLocation(windowUtils);
}
}
/**
* Initializes the database (showing various popups and warnings if the location is not ok) and
* creates the {@link Injector}
*/
private static Injector initializeDependencies(
final String databasePath, final IWindowUtils windowUtils) {
EmbeddedObjectContainer container = null;
try {
container = Db4oEmbedded.openFile(databasePath);
} catch (final Db4oException e) {
windowUtils.showErrorMessage(
"Either your database is currently being used, or is seriouly corrupted, or you didn't choose a database file!\nYou need to either select or create a database.",
"Database Load Error");
return initializeDependencies(chooseDatabaseLocation(windowUtils), windowUtils);
}
return Guice.createInjector(
new GuiceConfigBackend(container, databasePath), new GuiceConfigGui());
}
/** Uses a {@link JFileChooser} to get a database location */
private static String chooseDatabaseLocation(final IWindowUtils windowUtils) {
final JFileChooser fileChooser = new JFileChooser();
fileChooser.setDialogTitle("Select Database");
fileChooser.setApproveButtonText("Use this Database");
final int result = fileChooser.showDialog(null, null);
if (result == JFileChooser.APPROVE_OPTION) {
return fileChooser.getSelectedFile().getAbsolutePath();
} else {
if (windowUtils.showWarningQuestionMessage(
"Apprentice needs a database!\nDo you want to go back and select or create a new one?\nOtherwise the program will terminate.",
"Database")) {
return chooseDatabaseLocation(windowUtils);
} else {
LOG.info("Shut down due to lack of database.");
System.exit(0);
}
}
return ""; // kinda unreachable
}