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PhabricatorQueryIterator.php
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			<?php

			final class PhabricatorQueryIterator extends PhutilBufferedIterator {

			private $query;
			private $pager;

			public function __construct(PhabricatorCursorPagedPolicyAwareQuery $query) {
			$this->query = $query;
			}

			protected function didRewind() {
			$pager = new AphrontCursorPagerView();

			$page_size = $this->getPageSize();
			$pager->setPageSize($page_size);

			$this->pager = $pager;
			}

			#[\ReturnTypeWillChange]
			public function key() {
			return $this->current()->getID();
			}

			protected function loadPage() {
			if (!$this->pager) {
			return array();
			}

			$pager = clone $this->pager;
			$query = clone $this->query;

			$query->setDisableOverheating(true);

			$results = $query->executeWithCursorPager($pager);

			// If we got less than a full page of results, this was the last set of
			// results. Throw away the pager so we end iteration.
			if (!$pager->getHasMoreResults()) {
			$this->pager = null;
			} else {
			$this->pager->setAfterID($pager->getNextPageID());
			}

			return $results;
			}

			}