public function getReadPreference()
{
if ($this->cursor) {
return $this->cursor->getReadPreference();
}
return $this->readPreference;
}
/**
* Set whether secondary read queries are allowed for this cursor.
*
* This method wraps setSlaveOkay() for driver versions before 1.3.0. For
* newer drivers, this method either wraps setReadPreference() method and
* specifies SECONDARY_PREFERRED or does nothing, depending on whether
* setReadPreference() exists.
*
* @param boolean $ok
*/
public function setMongoCursorSlaveOkay($ok)
{
if ($ok) {
// Preserve existing tags for non-primary read preferences
$readPref = $this->mongoCursor->getReadPreference();
$this->mongoCursor->setReadPreference(\MongoClient::RP_SECONDARY_PREFERRED, isset($readPref['tagsets']) ? $readPref['tagsets'] : []);
} else {
$this->mongoCursor->setReadPreference(\MongoClient::RP_PRIMARY);
}
}
/**
* Set whether secondary read queries are allowed for this cursor.
*
* This method wraps setSlaveOkay() for driver versions before 1.3.0. For
* newer drivers, this method either wraps setReadPreference() method and
* specifies SECONDARY_PREFERRED or does nothing, depending on whether
* setReadPreference() exists.
*
* @param boolean $ok
*/
public function setMongoCursorSlaveOkay($ok)
{
if (version_compare(phpversion('mongo'), '1.3.0', '<')) {
$this->mongoCursor->slaveOkay($ok);
return;
}
/* MongoCursor::setReadPreference() may not exist until 1.4.0. Although
* we could throw an exception here, it's more user-friendly to NOP.
*/
if (!method_exists($this->mongoCursor, 'setReadPreference')) {
return;
}
if ($ok) {
// Preserve existing tags for non-primary read preferences
$readPref = $this->mongoCursor->getReadPreference();
$tags = !empty($readPref['tagsets']) ? ReadPreference::convertTagSets($readPref['tagsets']) : array();
$this->mongoCursor->setReadPreference(\MongoClient::RP_SECONDARY_PREFERRED, $tags);
} else {
$this->mongoCursor->setReadPreference(\MongoClient::RP_PRIMARY);
}
}
