Neos\Flow\Persistence\QueryInterface::isEmpty PHP Method

QueryInterface Interface Documentation 显示文件 Open project: neos/flow-development-collection

isEmpty() public method

It matches if the multivalued property contains no values or is NULL.
public isEmpty ( string $propertyName ) : boolean
$propertyName string The name of the multivalued property to compare against
return boolean 
    public function isEmpty($propertyName);
QueryInterface
contains
count
equals
execute
getConstraint
getLimit
getOffset
getOrderings
getType
greaterThan
greaterThanOrEqual
in
isDistinct
isEmpty
lessThan
lessThanOrEqual
like
logicalAnd
logicalNot
logicalOr
matching
setDistinct
setLimit
setOffset
setOrderings