PhabricatorTypeaheadCompositeDatasource.php
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PhabricatorTypeaheadCompositeDatasource.php
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	<?php

	abstract class PhabricatorTypeaheadCompositeDatasource
	extends PhabricatorTypeaheadDatasource {

	abstract public function getComponentDatasources();

	public function getDatasourceApplicationClass() {
	return null;
	}

	public function loadResults() {
	$results = array();
	foreach ($this->getUsableDatasources() as $source) {
	$source
	->setRawQuery($this->getRawQuery())
	->setQuery($this->getQuery())
	->setViewer($this->getViewer())
	->setLimit($this->getLimit());

	$results[] = $source->loadResults();
	}
	return array_mergev($results);
	}

	private function getUsableDatasources() {
	$sources = $this->getComponentDatasources();

	$usable = array();
	foreach ($sources as $source) {
	$application_class = $source->getDatasourceApplicationClass();

	if ($application_class) {
	$result = id(new PhabricatorApplicationQuery())
	->setViewer($this->getViewer())
	->withClasses(array($application_class))
	->execute();
	if (!$result) {
	continue;
	}
	}

	$usable[] = $source;
	}

	return $usable;
	}

	}