Fixed bug #13471: List module eats up tons of memory if displaying records with many...

git-svn-id: https://svn.typo3.org/TYPO3v4/Core/trunk@7403 709f56b5-9817-0410-a4d7-c38de5d9e867

diff --git a/ChangeLog b/ChangeLog
index 35a0552..81406ba 100755 (executable)
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,7 @@
 
 2010-04-20  Christian Kuhn  <lolli@schwarzbu.ch>
 
+       * Fixed bug #13471: List module eats up tons of memory if displaying records with many references
        * Fixed bug #14152: Table sys_log, field details is too small
        * Fixed bug #13908: saltedpasswords: Enhance Unit Tests by testing passwords of various character classes (thanks to Marcus Krause)
 

diff --git a/typo3/class.db_list_extra.inc b/typo3/class.db_list_extra.inc
index db6f709..e49386b 100644 (file)
--- a/typo3/class.db_list_extra.inc
+++ b/typo3/class.db_list_extra.inc
@@ -119,7 +119,22 @@ class localRecordList extends recordList {
        var $CBnames=array();                                   // Tracking names of elements (for clipboard use)
        var $duplicateStack=array();                    // Used to track which elements has duplicates and how many
 
-       var $references;                                                // References of the current record
+       /**
+        * references of the current record
+        *
+        * @var array
+        *
+        * @deprecated since 4.4: Use getReferenceCount instead
+        */
+       public $references;
+
+       /**
+        * [$tablename][$uid] = number of references to this record
+        *
+        * @var array
+        */
+       protected $referenceCount = array();
+
        var $translations;                                              // Translations of the current record
        var $selFieldList;                                              // select fields for the query which fetches the translations of the current record
 
@@ -639,8 +654,6 @@ class localRecordList extends recordList {
                }
 
                if (is_array($row))     {
-
-                       $this->setReferences($table, $row['uid']);
                                // add special classes for first and last row
                        $rowSpecial = '';
                        if ($cc == 1 && $indent == 0) {
@@ -679,7 +692,7 @@ class localRecordList extends recordList {
                                                        '</a>';
                                        }
                                        $theData[$fCol] = $warning . $this->linkWrapItems($table, $row['uid'], $recTitle, $row);
-                                       
+
                                                // Render thumbsnails if a thumbnail column exists and there is content in it:
                                        if ($this->thumbs && trim($row[$thumbsCol])) {
                                                $theData[$fCol] .= '<br />' . $this->thumbCode($row,$table,$thumbsCol);
@@ -696,7 +709,7 @@ class localRecordList extends recordList {
                                } elseif ($fCol == '_PATH_') {
                                        $theData[$fCol]=$this->recPath($row['pid']);
                                } elseif ($fCol == '_REF_') {
-                                       $theData[$fCol]=$this->makeRef($table,$row['uid']);
+                                       $theData[$fCol] = $this->createReferenceHtml($table, $row['uid']);
                                } elseif ($fCol == '_CONTROL_') {
                                        $theData[$fCol]=$this->makeControl($table,$row);
                                } elseif ($fCol == '_AFTERCONTROL_' || $fCol == '_AFTERREF_') {
@@ -750,10 +763,14 @@ class localRecordList extends recordList {
         * @param       string          Table name
         * @param       integer         Uid of current record
         * @return      void
+        *
+        * @deprecated since 4.4: Use getReferenceCount instead
         */
        function setReferences($table, $uid) {
+               t3lib_div::logDeprecatedFunction();
+
                $rows = $GLOBALS['TYPO3_DB']->exec_SELECTgetRows(
-                       '*',
+                       'tablename, recuid, field',
                        'sys_refindex',
                        'ref_table='.$GLOBALS['TYPO3_DB']->fullQuoteStr($table,'sys_refindex').
                                ' AND ref_uid='.intval($uid).
@@ -762,6 +779,36 @@ class localRecordList extends recordList {
                $this->references = $rows;
        }
 
+       /**
+        * Gets the number of records referencing the record with the UID $uid in
+        * the table $tableName.
+        *
+        * @param string $tableName
+        *        table name of the referenced record, must not be empty
+        * @param integer $uid
+        *        UID of the referenced record, must be > 0
+        *
+        * @return integer the number of references to record $uid in table
+        *                 $tableName, will be >= 0
+        */
+       protected function getReferenceCount($tableName, $uid) {
+               if (!isset($this->referenceCount[$tableName][$uid])) {
+                       $numberOfReferences = $GLOBALS['TYPO3_DB']->exec_SELECTcountRows(
+                               '*',
+                               'sys_refindex',
+                               'ref_table = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
+                                       $tableName, 'sys_refindex'
+                               ) .
+                                       ' AND ref_uid = ' . $uid .
+                                       ' AND deleted = 0'
+                       );
+
+                       $this->referenceCount[$tableName][$uid] = $numberOfReferences;
+               }
+
+               return $this->referenceCount[$tableName][$uid];
+       }
+
        /**
         * Rendering the header row for a table
         *
@@ -1248,7 +1295,14 @@ class localRecordList extends recordList {
                                        $title = t3lib_div::slashJS(t3lib_div::fixed_lgd_cs($titleOrig, $this->fixedL), 1);
                                        $params = '&cmd['.$table.']['.$row['uid'].'][delete]=1';
 
-                                       $refCountMsg = t3lib_BEfunc::referenceCount($table, $row['uid'], ' ' . $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xml:labels.referencesToRecord'), count($this->references)) .
+                                       $refCountMsg = t3lib_BEfunc::referenceCount(
+                                               $table,
+                                               $row['uid'],
+                                               ' ' . $GLOBALS['LANG']->sL(
+                                                       'LLL:EXT:lang/locallang_core.xml:labels.referencesToRecord'
+                                               ),
+                                               $this->getReferenceCount($table, $row['uid'])
+                                       ) .
                                                t3lib_BEfunc::translationCount($table, $row['uid'], ' ' . $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xml:labels.translationsOfRecord'));
                                        $cells['delete']='<a href="#" onclick="'.htmlspecialchars('if (confirm('.$LANG->JScharCode($LANG->getLL('deleteWarning').' "'. $title.'" '.$refCountMsg).')) {jumpToUrl(\''.$SOBE->doc->issueCommand($params,-1).'\');} return false;').'">'.
                                                        '<img'.t3lib_iconWorks::skinImg($this->backPath,'gfx/garbage.gif','width="11" height="12"').' title="'.$LANG->getLL('delete',1).'" alt="" />'.
@@ -1419,8 +1473,11 @@ class localRecordList extends recordList {
         * @param       string          Table name
         * @param       integer         UID of record
         * @return      string          HTML-table
+        *
+        * @deprecated since 4.4: Use getReferenceHTML() instead
         */
        function makeRef($table,$uid)   {
+               t3lib_div::logDeprecatedFunction();
 
                        // Compile information for title tag:
                $infoData=array();
@@ -1433,6 +1490,58 @@ class localRecordList extends recordList {
                return count($infoData) ? '<a href="#" onclick="'.htmlspecialchars('top.launchView(\''.$table.'\', \''.$uid.'\'); return false;').'" title="'.htmlspecialchars(t3lib_div::fixed_lgd_cs(implode(' / ',$infoData),100)).'">'.count($infoData).'</a>' : '';
        }
 
+       /**
+        * Creates the HTML for a reference count for the record with the UID $uid
+        * in the table $tableName.
+        *
+        * @param string $tableName
+        *        table name of the referenced record, must not be empty
+        * @param integer $uid
+        *        UID of the referenced record, must be > 0
+        *
+        * @return string HTML of reference a link, will be empty if there are no
+        *                references to the corresponding record
+        */
+       protected function createReferenceHtml($tableName, $uid) {
+               $referenceCount = $this->getReferenceCount($tableName, $uid);
+               if ($referenceCount == 0) {
+                       return '';
+               }
+
+               $queryResult = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
+                       'tablename, recuid, field',
+                       'sys_refindex',
+                       'ref_table = ' . $GLOBALS['TYPO3_DB']->fullQuoteStr(
+                               $tableName, 'sys_refindex'
+                       ) .
+                               ' AND ref_uid = ' . $uid .
+                               ' AND deleted = 0',
+                       '',
+                       '',
+                       '0,20'
+               );
+
+               $referenceTitles = array();
+
+               while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($queryResult)) {
+                       $referenceTitles[] = $row['tablename'] . ':' . $row['recuid'] .
+                               ':' . $row['field'];
+                       if (strlen(implode(' / ', $referenceTitles)) >= 100) {
+                               break;
+                       }
+               }
+               $GLOBALS['TYPO3_DB']->sql_free_result($queryResult);
+
+               return '<a href="#" ' .
+                       'onclick="' . htmlspecialchars(
+                               'top.launchView(\'' . $tableName . '\', \'' . $uid .
+                               '\'); return false;'
+                       ) . '" ' .
+                       'title="' . htmlspecialchars(
+                               t3lib_div::fixed_lgd_cs(implode(' / ', $referenceTitles), 100)
+                       ) . '">' . $referenceCount . '</a>';
+       }
+
        /**
         * Creates the localization panel
         *
@@ -1715,7 +1824,7 @@ class localRecordList extends recordList {
                                        break;
 
                                case '_REF_':
-                                       $csvRow[] = $this->makeRef($table, $row['uid']);
+                                       $csvRow[] = $this->createReferenceHtml($table, $row['uid']);
                                        break;
 
                                        // remove these columns from the CSV view