76 lines
2.2 KiB
PHP
76 lines
2.2 KiB
PHP
<?php
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namespace Civi\ActionSchedule\Event;
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use Civi\ActionSchedule\MappingInterface;
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use Symfony\Component\EventDispatcher\Event;
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/**
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* Class MailingQueryEvent
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* @package Civi\ActionSchedule\Event
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*
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* This event allows listeners to modify the query which generates mailing data.
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* If you want to fetch extra mail-merge data as part of an initial query, then
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* modify the mailing-query to add extra JOINs/SELECTs.
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*
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* The basic mailing query looks a bit like this (depending on configuration):
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*
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* @code
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* SELECT reminder.id AS reminderID, reminder.contact_id as contactID, ...
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* FROM `civicrm_action_log` reminder
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* ... JOIN `target_entity` e ON e.id = reminder.entity_id ...
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* WHERE reminder.action_schedule_id = #casActionScheduleId
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* @endcode
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*
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* Listeners may modify the query. For example, suppose we want to load
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* additional fields from the related 'foo' entity:
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*
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* @code
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* $event->query->join('foo', '!casMailingJoinType civicrm_foo foo ON foo.myentity_id = e.id')
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* ->select('foo.bar_value AS bar');
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* @endcode
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*
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* There are several parameters pre-set for use in queries:
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* - 'casActionScheduleId'
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* - 'casEntityJoinExpr' - eg 'e.id = reminder.entity_id'
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* - 'casMailingJoinType' - eg 'LEFT JOIN' or 'INNER JOIN' (depending on configuration)
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* - 'casMappingId'
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* - 'casMappingEntity'
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*
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* (Note: When adding more JOINs, it seems typical to use !casMailingJoinType, although
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* some hard-code a LEFT JOIN. Don't have an explanation for why.)
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*/
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class MailingQueryEvent extends Event {
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/**
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* The schedule record which produced this mailing.
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*
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* @var \CRM_Core_DAO_ActionSchedule
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*/
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public $actionSchedule;
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/**
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* The mapping record which produced this mailing.
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*
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* @var MappingInterface
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*/
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public $mapping;
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/**
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* The alterable query. For details, see the class description.
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* @var \CRM_Utils_SQL_Select
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* @see MailingQueryEvent
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*/
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public $query;
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/**
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* @param \CRM_Core_DAO_ActionSchedule $actionSchedule
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* @param MappingInterface $mapping
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* @param \CRM_Utils_SQL_Select $query
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*/
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public function __construct($actionSchedule, $mapping, $query) {
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$this->actionSchedule = $actionSchedule;
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$this->mapping = $mapping;
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$this->query = $query;
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}
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}
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