Predicate

Inheritance diagram for Predicate:

Description

A logical expression that evaluates to a boolean.

Public Static Methods
static self	match (DB $db, $a, $b)
	Null-safe equality Predicate from mixed arguments. More...
Public Static Methods inherited from Expression
magic static self	factory (DB $db, string $expression)

Public Methods
Predicate	lAnd (string ... $predicates)
	Logical AND More...
self	lNot ()
	Logical NOT More...
Predicate	lOr (string ... $predicates)
	Logical OR More...
Public Methods inherited from Expression
	__construct (DB $db, string $expression)
string	__toString ()

Additional Inherited Members
Protected Properties inherited from Expression
DB	$db
string	$expression

Methods

lAnd()

Predicate lAnd

(

string ...

$predicates

)

Logical AND

($this AND ...)

Parameters

string

...$predicates

Returns

Predicate

lNot()

self lNot

(

)

Logical NOT

NOT($this)

Returns

self

lOr()

Predicate lOr

(

string ...

$predicates

)

Logical OR

($this OR ...)

Parameters

string

...$predicates

Returns

Predicate

match()

static self match ( DB  $db,   $a,   $b  )

static

Null-safe equality Predicate from mixed arguments.

If $a is an integer (enumerated item), returns $b as a Predicate

If $b is a closure, returns from $b($a, DB $this)

If $b is an EntityInterface, the ID is used.

If $b is an array, returns $a IN (...quoted $b)

If $b is a Select, returns $a IN ($b->toSql())

Otherwise predicates upon $a = quoted $b

Parameters

scalar	$a
null | scalar | array | Closure | EntityInterface | Select | ValueInterface	$b

Returns

self