/**
* Parses and sets a single database option.
*
* @param session REST session
* @param param current parameter
* @param force force execution
* @return success flag, indicates if value was found
* @throws BaseXException database exception
*/
static boolean parseOption(
final RESTSession session, final Entry<String, String[]> param, final boolean force)
throws BaseXException {
final String key = param.getKey().toUpperCase(Locale.ENGLISH);
final MainOptions options = session.context.options;
final boolean found = options.option(key) != null;
if (found || force) options.assign(key, param.getValue()[0]);
return found;
}
@Override
public void startUpdate(final MainOptions opts) throws IOException {
if (!table.lock(true)) throw new BaseXException(Text.DB_PINNED_X, meta.name);
if (opts.get(MainOptions.AUTOFLUSH)) {
final IOFile uf = meta.updateFile();
if (uf.exists()) throw new BaseXException(Text.DB_UPDATED_X, meta.name);
if (!uf.touch()) throw Util.notExpected("%: could not create lock file.", meta.name);
}
}
@Override
public synchronized void finishUpdate(final MainOptions opts) {
// remove updating file
final boolean auto = opts.get(MainOptions.AUTOFLUSH);
if (auto) {
final IOFile uf = meta.updateFile();
if (!uf.exists()) throw Util.notExpected("%: lock file does not exist.", meta.name);
if (!uf.delete()) throw Util.notExpected("%: could not delete lock file.", meta.name);
}
// db:optimize(..., true) will close the database before this function is called
if (!closed) {
flush(auto);
if (!table.lock(false)) throw Util.notExpected("Database '%': could not unlock.", meta.name);
}
}