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