/**
* Returns foreign keys and entity references
*
* @return array
* [CRM_Core_Reference_Interface]
*/
static function getReferenceColumns()
{
if (!self::$_links) {
self::$_links = static::createReferenceColumns(__CLASS__);
self::$_links[] = new CRM_Core_Reference_Basic(self::getTableName(), 'campaign_id', 'civicrm_campaign', 'id');
self::$_links[] = new CRM_Core_Reference_Dynamic(self::getTableName(), 'entity_id', NULL, 'id', 'entity_table');
}
return self::$_links;
}
/**
* return foreign links
*
* @access public
* @return array
*/
function &links()
{
if (!self::$_links) {
self::$_links = array('campaign_id' => 'civicrm_campaign:id');
}
return self::$_links;
}
/**
* return foreign keys and entity references
*
* @static
* @access public
* @return array of CRM_Core_EntityReference
*/
static function getReferenceColumns()
{
if (!self::$_links) {
self::$_links = array(new CRM_Core_EntityReference(self::getTableName(), 'campaign_id', 'civicrm_campaign', 'id'), new CRM_Core_EntityReference(self::getTableName(), 'entity_id', NULL, 'id', 'entity_table'));
}
return self::$_links;
}