Beispiel #1
0
  /**
   * Gets the specified method from a query module.
   *
   * @param mod query module object
   * @param path path of the module
   * @param name method name
   * @param arity number of arguments
   * @param qc query context
   * @param ii input info
   * @return method if found, {@code null} otherwise
   * @throws QueryException query exception
   */
  private static Method getModMethod(
      final Object mod,
      final String path,
      final String name,
      final long arity,
      final QueryContext qc,
      final InputInfo ii)
      throws QueryException {

    // find method with identical name and arity
    Method meth = null;
    for (final Method m : mod.getClass().getMethods()) {
      if (m.getName().equals(name) && m.getParameterTypes().length == arity) {
        if (meth != null) throw JAVAAMBIG_X.get(ii, "Q{" + path + '}' + name + '#' + arity);
        meth = m;
      }
    }
    if (meth == null) throw FUNCJAVA_X.get(ii, path + ':' + name);

    // check if user has sufficient permissions to call the function
    Perm perm = Perm.ADMIN;
    final QueryModule.Requires req = meth.getAnnotation(QueryModule.Requires.class);
    if (req != null) perm = Perm.get(req.value().name());
    if (!qc.context.user.has(perm)) return null;

    // Add module locks to QueryContext.
    final QueryModule.Lock lock = meth.getAnnotation(QueryModule.Lock.class);
    if (lock != null) {
      for (final String read : lock.read()) qc.readLocks.add(DBLocking.MODULE_PREFIX + read);
      for (final String write : lock.write()) qc.writeLocks.add(DBLocking.MODULE_PREFIX + write);
    }

    return meth;
  }
Beispiel #2
0
 /**
  * Returns the maximum permission from the specified commands.
  *
  * @param cmds commands to be checked
  * @return permission
  */
 private static Perm max(final ArrayList<Command> cmds) {
   Perm p = Perm.NONE;
   for (final Command c : cmds) p = p.max(c.perm);
   return p;
 }