Class UnaryExpression
An expression object that represents an expression with only a single operand.
Properties summary
-
$_mode protected
intWhere to place the operator
-
$_operator protected
stringThe operator this unary expression represents
-
$_value protected
mixedHolds the value which the unary expression operates
Method Summary
-
__clone() public
Perform a deep clone of the inner expression.
-
__construct() public
Constructor
-
sql() public
Converts the expression to its string representation
-
traverse() public
Iterates over each part of the expression recursively for every level of the expressions tree and executes the $visitor callable passing as first parameter the instance of the expression currently being iterated.
Method Detail
__construct() public ¶
__construct(string $operator, mixed $value, mixed $mode)
Constructor
Parameters
-
string$operator The operator to used for the expression
-
mixed$value the value to use as the operand for the expression
-
int$mode optional either UnaryExpression::PREFIX or UnaryExpression::POSTFIX
sql() public ¶
sql(\Cake\Database\ValueBinder $generator)
Converts the expression to its string representation
Parameters
-
\Cake\Database\ValueBinder$generator Placeholder generator object
Returns
stringtraverse() public ¶
traverse(\Closure $visitor)
Iterates over each part of the expression recursively for every level of the expressions tree and executes the $visitor callable passing as first parameter the instance of the expression currently being iterated.
Parameters
-
\Closure$visitor The callable to apply to all nodes.
Returns
$this