PhabricatorQuery.php
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PhabricatorQuery.php
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			<?php

			/**
			* @task format Formatting Query Clauses
			*/
			abstract class PhabricatorQuery extends Phobject {


			abstract public function execute();


			/* -( Formatting Query Clauses )------------------------------------------- */


			/**
			* @task format
			*/
			protected function formatWhereClause(
			AphrontDatabaseConnection $conn,
			array $parts) {

			$parts = $this->flattenSubclause($parts);
			if (!$parts) {
			return qsprintf($conn, '');
			}

			return qsprintf($conn, 'WHERE %LA', $parts);
			}



			/**
			* @task format
			*/
			protected function formatSelectClause(
			AphrontDatabaseConnection $conn,
			array $parts) {

			$parts = $this->flattenSubclause($parts);
			if (!$parts) {
			throw new Exception(pht('Can not build empty SELECT clause!'));
			}

			return qsprintf($conn, 'SELECT %LQ', $parts);
			}


			/**
			* @task format
			*/
			protected function formatJoinClause(
			AphrontDatabaseConnection $conn,
			array $parts) {

			$parts = $this->flattenSubclause($parts);
			if (!$parts) {
			return qsprintf($conn, '');
			}

			return qsprintf($conn, '%LJ', $parts);
			}


			/**
			* @task format
			*/
			protected function formatHavingClause(
			AphrontDatabaseConnection $conn,
			array $parts) {

			$parts = $this->flattenSubclause($parts);
			if (!$parts) {
			return qsprintf($conn, '');
			}

			return qsprintf($conn, 'HAVING %LA', $parts);
			}


			/**
			* @task format
			*/
			private function flattenSubclause(array $parts) {
			$result = array();
			foreach ($parts as $part) {
			if (is_array($part)) {
			foreach ($this->flattenSubclause($part) as $subpart) {
			$result[] = $subpart;
			}
			} else if (($part !== null) && strlen($part)) {
			$result[] = $part;
			}
			}
			return $result;
			}

			}