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PhabricatorOffsetPagedQuery.php
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			<?php

			/**
			* A query class which uses offset/limit paging. Provides logic and accessors
			* for offsets and limits.
			*/
			abstract class PhabricatorOffsetPagedQuery extends PhabricatorQuery {

			private $offset;
			private $limit;

			final public function setOffset($offset) {
			$this->offset = $offset;
			return $this;
			}

			final public function setLimit($limit) {
			$this->limit = $limit;
			return $this;
			}

			final public function getOffset() {
			return $this->offset;
			}

			final public function getLimit() {
			return $this->limit;
			}

			protected function buildLimitClause(AphrontDatabaseConnection $conn) {
			if ($this->limit && $this->offset) {
			return qsprintf($conn, 'LIMIT %d, %d', $this->offset, $this->limit);
			} else if ($this->limit) {
			return qsprintf($conn, 'LIMIT %d', $this->limit);
			} else if ($this->offset) {
			return qsprintf($conn, 'LIMIT %d, %d', $this->offset, PHP_INT_MAX);
			} else {
			return qsprintf($conn, '');
			}
			}

			final public function executeWithOffsetPager(PHUIPagerView $pager) {
			$this->setLimit($pager->getPageSize() + 1);
			$this->setOffset($pager->getOffset());

			$results = $this->execute();

			return $pager->sliceResults($results);
			}

			}