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.

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