From 370e83bb0dfd0c70de268c93bf07ad5ee0897192 Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Fri, 15 Aug 2008 01:29:47 +0200
Subject: Update auf 1.13.0

---
 includes/api/ApiQueryImages.php | 70 +++++++++++++++++++++++++++++++++++------
 1 file changed, 61 insertions(+), 9 deletions(-)

(limited to 'includes/api/ApiQueryImages.php')

diff --git a/includes/api/ApiQueryImages.php b/includes/api/ApiQueryImages.php
index f7405374..32c4e1b0 100644
--- a/includes/api/ApiQueryImages.php
+++ b/includes/api/ApiQueryImages.php
@@ -29,9 +29,9 @@ if (!defined('MEDIAWIKI')) {
 }
 
 /**
- * This query adds <images> subelement to all pages with the list of images embedded into those pages.
- * 
- * @addtogroup API
+ * This query adds an <images> subelement to all pages with the list of images embedded into those pages.
+ *
+ * @ingroup API
  */
 class ApiQueryImages extends ApiQueryGeneratorBase {
 
@@ -52,6 +52,7 @@ class ApiQueryImages extends ApiQueryGeneratorBase {
 		if ($this->getPageSet()->getGoodTitleCount() == 0)
 			return;	// nothing to do
 
+		$params = $this->extractRequestParams();
 		$this->addFields(array (
 			'il_from',
 			'il_to'
@@ -59,16 +60,40 @@ class ApiQueryImages extends ApiQueryGeneratorBase {
 
 		$this->addTables('imagelinks');
 		$this->addWhereFld('il_from', array_keys($this->getPageSet()->getGoodTitles()));
-		$this->addOption('ORDER BY', "il_from, il_to");
+		if(!is_null($params['continue'])) {
+			$cont = explode('|', $params['continue']);
+			if(count($cont) != 2)
+				$this->dieUsage("Invalid continue param. You should pass the " .
+					"original value returned by the previous query", "_badcontinue");
+			$ilfrom = intval($cont[0]);
+			$ilto = $this->getDb()->strencode($this->titleToKey($cont[1]));
+			$this->addWhere("il_from > $ilfrom OR ".
+					"(il_from = $ilfrom AND ".
+					"il_to >= '$ilto')");
+		}
+		# Don't order by il_from if it's constant in the WHERE clause
+		if(count($this->getPageSet()->getGoodTitles()) == 1)
+			$this->addOption('ORDER BY', 'il_to');
+		else
+			$this->addOption('ORDER BY', 'il_from, il_to');
+		$this->addOption('LIMIT', $params['limit'] + 1);
 
 		$db = $this->getDB();
 		$res = $this->select(__METHOD__);
 
 		if (is_null($resultPageSet)) {
-			
+
 			$data = array();
-			$lastId = 0;	// database has no ID 0	
+			$lastId = 0;	// database has no ID 0
+			$count = 0;
 			while ($row = $db->fetchObject($res)) {
+				if (++$count > $params['limit']) {
+					// We've reached the one extra which shows that
+					// there are additional pages to be had. Stop here...
+					$this->setContinueEnumParameter('continue', $row->il_from .
+							'|' . $this->keyToTitle($row->il_to));
+					break;
+				}
 				if ($lastId != $row->il_from) {
 					if($lastId != 0) {
 						$this->addPageSubItems($lastId, $data);
@@ -76,7 +101,7 @@ class ApiQueryImages extends ApiQueryGeneratorBase {
 					}
 					$lastId = $row->il_from;
 				}
-				
+
 				$vals = array();
 				ApiQueryBase :: addTitleInfo($vals, Title :: makeTitle(NS_IMAGE, $row->il_to));
 				$data[] = $vals;
@@ -89,7 +114,15 @@ class ApiQueryImages extends ApiQueryGeneratorBase {
 		} else {
 
 			$titles = array();
+			$count = 0;
 			while ($row = $db->fetchObject($res)) {
+				if (++$count > $params['limit']) {
+					// We've reached the one extra which shows that
+					// there are additional pages to be had. Stop here...
+					$this->setContinueEnumParameter('continue', $row->il_from .
+							'|' . $this->keyToTitle($row->il_to));
+					break;
+				}
 				$titles[] = Title :: makeTitle(NS_IMAGE, $row->il_to);
 			}
 			$resultPageSet->populateFromTitles($titles);
@@ -98,6 +131,26 @@ class ApiQueryImages extends ApiQueryGeneratorBase {
 		$db->freeResult($res);
 	}
 
+	public function getAllowedParams() {
+		return array(
+				'limit' => array(
+					ApiBase :: PARAM_DFLT => 10,
+					ApiBase :: PARAM_TYPE => 'limit',
+					ApiBase :: PARAM_MIN => 1,
+					ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
+					ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
+				),
+				'continue' => null,
+		);
+	}
+
+	public function getParamDescription () {
+		return array(
+			'limit' => 'How many images to return',
+			'continue' => 'When more results are available, use this to continue',
+		);
+	}
+
 	public function getDescription() {
 		return 'Returns all images contained on the given page(s)';
 	}
@@ -112,7 +165,6 @@ class ApiQueryImages extends ApiQueryGeneratorBase {
 	}
 
 	public function getVersion() {
-		return __CLASS__ . ': $Id: ApiQueryImages.php 30222 2008-01-28 19:05:26Z catrope $';
+		return __CLASS__ . ': $Id: ApiQueryImages.php 37535 2008-07-10 21:20:43Z catrope $';
 	}
 }
-
-- 
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