Wikimedia\Rdbms\Expression Class Reference

A composite leaf representing an expression. More...

Inherits Wikimedia\Rdbms\IExpression.

Inherited by Wikimedia\Rdbms\RawSQLExpression.

Collaboration diagram for Wikimedia\Rdbms\Expression:

Public Member Functions
	__construct (string $field, string $op, $value)
	Store an expression.
	and (string $field, string $op, $value)
	andExpr (IExpression $expr)
	or (string $field, string $op, $value)
	orExpr (IExpression $expr)
	toGeneralizedSql ()
	toSql (DbQuoter $dbQuoter)

Additional Inherited Members
Public Attributes inherited from Wikimedia\Rdbms\IExpression
const	ACCEPTABLE_OPERATORS = [ '>', '<', '!=', '=', '>=', '<=', self::LIKE, self::NOT_LIKE ]
const	LIKE = 'LIKE'
const	NOT_LIKE = 'NOT LIKE'

Detailed Description

A composite leaf representing an expression.

Since

1.42

Definition at line 14 of file Expression.php.

Constructor & Destructor Documentation

__construct()

Wikimedia\Rdbms\Expression::__construct	(	string	$field,
		string	$op,
			$value )

Store an expression.

Parameters

string	$field
string	$op	One of '>', '<', '!=', '=', '>=', '<=', IExpression::LIKE, IExpression::NOT_LIKE
	?scalar|RawSQLValue|Blob|LikeValue|non-empty-list<scalar|Blob>	$value

Access: internal

Outside of rdbms, Use IReadableDatabase::expr() to create an expression object.

Definition at line 32 of file Expression.php.

References Wikimedia\Rdbms\IExpression\ACCEPTABLE_OPERATORS, Wikimedia\Rdbms\IExpression\LIKE, and Wikimedia\Rdbms\IExpression\NOT_LIKE.

Member Function Documentation

and()

Wikimedia\Rdbms\Expression::and	(	string	$field,
		string	$op,
			$value )

Parameters

string	$field
string	$op	One of '>', '<', '!=', '=', '>=', '<=', IExpression::LIKE, IExpression::NOT_LIKE
	?scalar|RawSQLValue|Blob|LikeValue|non-empty-list<scalar|Blob>	$value

Definition at line 79 of file Expression.php.

Referenced by MediaWiki\Api\ApiQueryRecentChanges\run().

andExpr()

Wikimedia\Rdbms\Expression::andExpr

(

IExpression

$expr

)

Parameters

IExpression

$expr

Returns

AndExpressionGroup

Definition at line 104 of file Expression.php.

or()

Wikimedia\Rdbms\Expression::or	(	string	$field,
		string	$op,
			$value )

Parameters

string	$field
string	$op	One of '>', '<', '!=', '=', '>=', '<=', IExpression::LIKE, IExpression::NOT_LIKE
	?scalar|RawSQLValue|Blob|LikeValue|non-empty-list<scalar|Blob>	$value

Definition at line 94 of file Expression.php.

orExpr()

Wikimedia\Rdbms\Expression::orExpr

(

IExpression

$expr

)

Parameters

IExpression

$expr

Returns

OrExpressionGroup

Definition at line 114 of file Expression.php.

toGeneralizedSql()

Wikimedia\Rdbms\Expression::toGeneralizedSql

(

)

Access: internal

to be used by rdbms library only

Implements Wikimedia\Rdbms\IExpression.

Reimplemented in Wikimedia\Rdbms\RawSQLExpression.

Definition at line 163 of file Expression.php.

toSql()

Wikimedia\Rdbms\Expression::toSql

(

DbQuoter

$dbQuoter

)

Access: internal

to be used by rdbms library only

Implements Wikimedia\Rdbms\IExpression.

Reimplemented in Wikimedia\Rdbms\RawSQLExpression.

Definition at line 123 of file Expression.php.

References Wikimedia\Rdbms\Database\DbQuoter\addQuotes().

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The documentation for this class was generated from the following file:

• includes/libs/rdbms/expression/Expression.php