# `TangoDeviceNameValidator`

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class TangoDeviceNameValidator(*p, **k)

  Validator for Tango device names. Apart from the standard named groups (scheme, authority, path, query and fragment), the following named groups are created:

  > - devname: device name (either alias or slashed name)

  > - [_devalias]: device alias

  > - [_devslashname]: device name in slashed (a/b/c) form

  > - [host] as in `TangoAuthorityNameValidator`

  > - [port] as in `TangoAuthorityNameValidator`

  Note: brackets on the group name indicate that this group will only contain a string if the URI contains it.

  Import from `taurus.core.tango.tangovalidator` as:

      from taurus.core.tango.tangovalidator import TangoDeviceNameValidator

  authority = '//((?P<host>([\\w\\-_]+\\.)*[\\w\\-_]+):(?P<port>\\d{1,5})|([\\w\\-_]+\\.)*[\\w\\-_]+:\\d{1,5}(,([\\w\\-_]+\\.)*[\\w\\-_]+:\\d{1,5})+)'
  default_scheme = 'tango'
  fragment = '(?P<_fragmentdb>dbase=(yes|no)$)'
  getNames(fullname, factory=None, queryAuth=True)

    reimplemented from `TaurusDeviceNameValidator`. It accepts an extra keyword arg queryAuth which, if set to False, will prevent the validator from trying to query a TaurusAuthority to obtain missing info such as the devslashname <–> devalias correspondence.

  getUriGroups(name, strict=None)

    Reimplementation of getUriGroups to fix the host and authority name using fully qualified domain name for the host.

  names_cache = {}
  property nonStrictNamePattern

    In non-strict mode, allow double-slash even if there is no Authority. (e.g., “tango://a/b/c” passes this non-strict form)

  path = '/?(?P<devname>((?P<_devalias>[^/?#:]+)|(?P<_devslashname>[^/?#:]+/[^/?#:]+/[^/?#:]+)))'
  query = '(?!)'
  scheme = '(tango|tango-nodb)'