protected $mContentFormat;
/**
- * @var Content
+ * @var Content|null|bool
*/
protected $mContent;
}
/**
- * Gets the content object for the revision
+ * Gets the content object for the revision (or null on failure).
+ *
+ * Note that for mutable Content objects, each call to this method will return a
+ * fresh clone.
*
* @since 1.21
- * @return Content
+ * @return Content|null the Revision's content, or null on failure.
*/
protected function getContentInternal() {
if( is_null( $this->mContent ) ) {
// Revision is immutable. Load on demand:
-
- $handler = $this->getContentHandler();
- $format = $this->getContentFormat();
-
if( is_null( $this->mText ) ) {
- // Load text on demand:
$this->mText = $this->loadText();
}
- $this->mContent = ( $this->mText === null || $this->mText === false ) ? null
- : $handler->unserializeContent( $this->mText, $format );
+ if ( $this->mText !== null && $this->mText !== false ) {
+ // Unserialize content
+ $handler = $this->getContentHandler();
+ $format = $this->getContentFormat();
+
+ $this->mContent = $handler->unserializeContent( $this->mText, $format );
+ } else {
+ $this->mContent = false; // negative caching!
+ }
}
- return $this->mContent->copy(); // NOTE: copy() will return $this for immutable content objects
+ // NOTE: copy() will return $this for immutable content objects
+ return $this->mContent ? $this->mContent->copy() : null;
}
/**
* Lazy-load the revision's text.
* Currently hardcoded to the 'text' table storage engine.
*
- * @return String|boolean the revision text, or false on failure
+ * @return String|bool the revision's text, or false on failure
*/
protected function loadText() {
wfProfileIn( __METHOD__ );