Sympa::DataSource(3Sympa)

NAME
Sympa::DataSource - Base class of Sympa data source subclasses

SYNOPSIS
  # To implemnt Sympa::DataSource::Foo:

  package Sympa::DataSource::Foo;

  use base qw(Sympa::DataSource);

  sub _open {
      my $self = shift;
      ...
      return $handle;
  }

  sub _next {
      my $self = shift;
      ...
      return [$email, $gecos];
  }

  1;

  # To use Sympa::DataSource::Foo:

  usr Sympa::DataSource;

  $ds = Sympa::DataSource->new('Foo', 'member', context => $list,
      key => val, ...);
  if ($ds and $ds->open) {
      while (my $member = $ds->next) {
          ...
      }
      $ds->close;
  }

DESCRIPTION
TBD.

  Methods

new ( $type, $role, context => $that, [ key => val, ... ] )
    Constructor. Creates a new instance of Sympa::DataSource.

    Parameters:

    $type
        Type of data source. This corresponds to impemented subclasses.

    $role
        Role of data source. 'member', 'owner', 'editor' or 'custom_attribute'.

    context => $that
        Context. Sympa::List instance and so on.

    key => val, ...
        Optional or mandatory parameters.

    Returns:

    A new instance, or "undef" on failure.

close ( )
    Instance method. Closes backend and does cleanup.

next ( )
    Instance method. Returns the next entry in data source. Data source should have been opened.

open ( )
    Instance method. Opens backend and returns handle.

get_id ( )
    Instance method. Gets unique ID of the instance.

get_short_id ( )
    Instance method. Gets data source ID, a hexadecimal string with 8 columns.

name ( )
    Instance method. Gets human-readable name of data source. Typically it is value of {name} attribute or result of get_short_id().

role ( )
    Instance method. Returns $role set by new().

__dsh ( )
    Instance method, protected. Returns native query handle which _open() returned. This may be used only at inside of each subclass.

  Methods subclass should implement

required_modules
    Class or instance method. TBD.

_open ( [ options... ] )
    Instance mthod. TBD.

_next ( [ options... ] )
    Instance method, mandatory. TBD.

_next_ca ( [ options... ] )
    Instance method, mandatory if the data source supports custom attribute. TBD.

_close (  )
    Instance method. TBD.

  Attributes

{context}
    Context of the data source set by new().

Others
    The other options set by new() may be accessed as attributes.

HISTORY
Sympa::DataSource appeared on Sympa 6.2.45b. See also "HISTORY" in Sympa::Request::Handler::include.