side.php
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<?php
abstract class P2P_Side {
protected $item_type;
abstract function get_object_type();
abstract function get_title();
abstract function get_desc();
abstract function get_labels();
abstract function can_edit_connections();
abstract function can_create_item();
abstract function get_base_qv( $q );
abstract function translate_qv( $qv );
abstract function do_query( $args );
abstract function capture_query( $args );
abstract function get_list( $query );
abstract function is_indeterminate( $side );
final function is_same_type( $side ) {
return $this->get_object_type() == $side->get_object_type();
}
/**
* @param object Raw object or P2P_Item
* @return bool|P2P_Item
*/
function item_recognize( $arg ) {
$class = $this->item_type;
if ( is_a( $arg, 'P2P_Item' ) ) {
if ( ! is_a( $arg, $class ) ) {
return false;
}
$arg = $arg->get_object();
}
$raw_item = $this->recognize( $arg );
if ( ! $raw_item ) {
return false;
}
return new $class( $raw_item );
}
/**
* @param object Raw object
*/
abstract protected function recognize( $arg );
}