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Added versioning to serialized LinkCache objects. Added pref.

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This commit is contained in:
Mr. E23 2003-11-27 19:53:40 +00:00
parent e9dff630f0
commit c280ef342b
1 changed files with 36 additions and 11 deletions
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43
includes/LinkCache.php
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@ -7,6 +7,9 @@ define ('LINKCACHE_BAD', 1);
define ('LINKCACHE_IMAGE', 2);
class LinkCache {
// Increment $mClassVer whenever old serialized versions of this class
// becomes incompatible with the new version.
/* private */ var $mClassVer = 1;
/* private */ var $mGoodLinks, $mBadLinks, $mActive;
/* private */ var $mImageLinks;
@ -140,7 +143,7 @@ class LinkCache {
function preFill( &$fromtitle )
{
global $wgEnablePersistentLC;
global $wgEnablePersistentLC, $wgCompressedPersistentLC;
$fname = "LinkCache::preFill";
wfProfileIn( $fname );
@ -148,12 +151,8 @@ class LinkCache {
$dbkeyfrom = wfStrencode( $fromtitle->getPrefixedDBKey() );
if ( $wgEnablePersistentLC ) {
$res = wfQuery("SELECT lcc_cacheobj FROM linkscc WHERE lcc_title = '{$dbkeyfrom}'",
DB_READ);
$row = wfFetchObject( $res );
if( $row != FALSE){
$cacheobj = gzuncompress( $row->lcc_cacheobj );
$cc = unserialize( $cacheobj );
$cc =& $this->getFromLinkscc( $dbkeyfrom );
if( $cc != FALSE ){
$this->mOldGoodLinks = $this->mGoodLinks = $cc->mGoodLinks;
$this->mOldBadLinks = $this->mBadLinks = $cc->mBadLinks;
$this->mPreFilled = true;
@ -192,8 +191,12 @@ class LinkCache {
if ( $wgEnablePersistentLC ) {
// put fetched link data into cache
$serCachegz = wfStrencode( gzcompress( serialize( $this ), 3) );
wfQuery("REPLACE INTO linkscc VALUES({$id}, '{$dbkeyfrom}', '{$serCachegz}')",
if( $wgCompressedPersistentLC and function_exists( "gzcompress" ) ) {
$ser = wfStrencode( gzcompress( serialize( $this ), 3 ));
} else {
$ser = wfStrencode( serialize( $this ) );
}
wfQuery("REPLACE INTO linkscc VALUES({$id}, '{$dbkeyfrom}', '{$ser}')",
DB_WRITE);
wfDebug( "LinkCache::preFill - saved to linkscc\n" );
}
@ -271,5 +274,27 @@ class LinkCache {
$this->mImageLinks = array();
}
function &getFromLinkscc( $dbkeyfrom ){
$res = wfQuery("SELECT lcc_cacheobj FROM linkscc WHERE lcc_title = '{$dbkeyfrom}'",
DB_READ);
$row = wfFetchObject( $res );
if( $row == FALSE)
return false;
$cacheobj = false;
if( function_exists( "gzuncompress" ) )
$cacheobj = @gzuncompress( $row->lcc_cacheobj );
if($cacheobj == FALSE){
$cacheobj = $row->lcc_cacheobj;
}
$cc = @unserialize( $cacheobj );
if( isset( $cc->mClassVer ) and ($cc->mClassVer == $this->mClassVer ) ){
return $cc;
} else {
return FALSE;
}
}
}
?>