HeraldRuleIndexEngineExtension.php
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HeraldRuleIndexEngineExtension.php
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	<?php

	final class HeraldRuleIndexEngineExtension
	extends PhabricatorEdgeIndexEngineExtension {

	const EXTENSIONKEY = 'herald.actions';

	public function getExtensionName() {
	return pht('Herald Actions');
	}

	public function shouldIndexObject($object) {
	if (!($object instanceof HeraldRule)) {
	return false;
	}

	return true;
	}

	protected function getIndexEdgeType() {
	return HeraldRuleActionAffectsObjectEdgeType::EDGECONST;
	}

	protected function getIndexDestinationPHIDs($object) {
	$rule = $object;

	$viewer = $this->getViewer();

	$rule = id(new HeraldRuleQuery())
	->setViewer($viewer)
	->withIDs(array($rule->getID()))
	->needConditionsAndActions(true)
	->executeOne();
	if (!$rule) {
	return array();
	}

	$phids = array();

	$fields = HeraldField::getAllFields();
	foreach ($rule->getConditions() as $condition_record) {
	$field = idx($fields, $condition_record->getFieldName());

	if (!$field) {
	continue;
	}

	$affected_phids = $field->getPHIDsAffectedByCondition($condition_record);
	foreach ($affected_phids as $phid) {
	$phids[] = $phid;
	}
	}

	$actions = HeraldAction::getAllActions();
	foreach ($rule->getActions() as $action_record) {
	$action = idx($actions, $action_record->getAction());

	if (!$action) {
	continue;
	}

	foreach ($action->getPHIDsAffectedByAction($action_record) as $phid) {
	$phids[] = $phid;
	}
	}

	$phids = array_fuse($phids);
	return array_keys($phids);
	}

	}