<?php
namespace Doctrine\DBAL\Query\Expression;
use Doctrine\DBAL\Connection;
use Doctrine\Deprecations\Deprecation;
use function func_get_arg;
use function func_get_args;
use function func_num_args;
use function implode;
use function sprintf;
/**
* ExpressionBuilder class is responsible to dynamically create SQL query parts.
*/
class ExpressionBuilder
{
public const EQ = '=';
public const NEQ = '<>';
public const LT = '<';
public const LTE = '<=';
public const GT = '>';
public const GTE = '>=';
/**
* The DBAL Connection.
*
* @var Connection
*/
private $connection;
/**
* Initializes a new <tt>ExpressionBuilder</tt>.
*
* @param Connection $connection The DBAL Connection.
*/
public function __construct(Connection $connection)
{
$this->connection = $connection;
}
/**
* Creates a conjunction of the given expressions.
*
* @param string|CompositeExpression $expression
* @param string|CompositeExpression ...$expressions
*/
public function and($expression, ...$expressions): CompositeExpression
{
return CompositeExpression::and($expression, ...$expressions);
}
/**
* Creates a disjunction of the given expressions.
*
* @param string|CompositeExpression $expression
* @param string|CompositeExpression ...$expressions
*/
public function or($expression, ...$expressions): CompositeExpression
{
return CompositeExpression::or($expression, ...$expressions);
}
/**
* @deprecated Use `and()` instead.
*
* @param mixed $x Optional clause. Defaults = null, but requires
* at least one defined when converting to string.
*
* @return CompositeExpression
*/
public function andX($x = null)
{
Deprecation::trigger(
'doctrine/dbal',
'https://github.com/doctrine/dbal/pull/3851',
'ExpressionBuilder::andX() is deprecated, use ExpressionBuilder::and() instead.'
);
return new CompositeExpression(CompositeExpression::TYPE_AND, func_get_args());
}
/**
* @deprecated Use `or()` instead.
*
* @param mixed $x Optional clause. Defaults = null, but requires
* at least one defined when converting to string.
*
* @return CompositeExpression
*/
public function orX($x = null)
{
Deprecation::trigger(
'doctrine/dbal',
'https://github.com/doctrine/dbal/pull/3851',
'ExpressionBuilder::orX() is deprecated, use ExpressionBuilder::or() instead.'
);
return new CompositeExpression(CompositeExpression::TYPE_OR, func_get_args());
}
/**
* Creates a comparison expression.
*
* @param mixed $x The left expression.
* @param string $operator One of the ExpressionBuilder::* constants.
* @param mixed $y The right expression.
*
* @return string
*/
public function comparison($x, $operator, $y)
{
return $x . ' ' . $operator . ' ' . $y;
}
/**
* Creates an equality comparison expression with the given arguments.
*
* First argument is considered the left expression and the second is the right expression.
* When converted to string, it will generated a <left expr> = <right expr>. Example:
*
* [php]
* // u.id = ?
* $expr->eq('u.id', '?');
*
* @param mixed $x The left expression.
* @param mixed $y The right expression.
*
* @return string
*/
public function eq($x, $y)
{
return $this->comparison($x, self::EQ, $y);
}
/**
* Creates a non equality comparison expression with the given arguments.
* First argument is considered the left expression and the second is the right expression.
* When converted to string, it will generated a <left expr> <> <right expr>. Example:
*
* [php]
* // u.id <> 1
* $q->where($q->expr()->neq('u.id', '1'));
*
* @param mixed $x The left expression.
* @param mixed $y The right expression.
*
* @return string
*/
public function neq($x, $y)
{
return $this->comparison($x, self::NEQ, $y);
}
/**
* Creates a lower-than comparison expression with the given arguments.
* First argument is considered the left expression and the second is the right expression.
* When converted to string, it will generated a <left expr> < <right expr>. Example:
*
* [php]
* // u.id < ?
* $q->where($q->expr()->lt('u.id', '?'));
*
* @param mixed $x The left expression.
* @param mixed $y The right expression.
*
* @return string
*/
public function lt($x, $y)
{
return $this->comparison($x, self::LT, $y);
}
/**
* Creates a lower-than-equal comparison expression with the given arguments.
* First argument is considered the left expression and the second is the right expression.
* When converted to string, it will generated a <left expr> <= <right expr>. Example:
*
* [php]
* // u.id <= ?
* $q->where($q->expr()->lte('u.id', '?'));
*
* @param mixed $x The left expression.
* @param mixed $y The right expression.
*
* @return string
*/
public function lte($x, $y)
{
return $this->comparison($x, self::LTE, $y);
}
/**
* Creates a greater-than comparison expression with the given arguments.
* First argument is considered the left expression and the second is the right expression.
* When converted to string, it will generated a <left expr> > <right expr>. Example:
*
* [php]
* // u.id > ?
* $q->where($q->expr()->gt('u.id', '?'));
*
* @param mixed $x The left expression.
* @param mixed $y The right expression.
*
* @return string
*/
public function gt($x, $y)
{
return $this->comparison($x, self::GT, $y);
}
/**
* Creates a greater-than-equal comparison expression with the given arguments.
* First argument is considered the left expression and the second is the right expression.
* When converted to string, it will generated a <left expr> >= <right expr>. Example:
*
* [php]
* // u.id >= ?
* $q->where($q->expr()->gte('u.id', '?'));
*
* @param mixed $x The left expression.
* @param mixed $y The right expression.
*
* @return string
*/
public function gte($x, $y)
{
return $this->comparison($x, self::GTE, $y);
}
/**
* Creates an IS NULL expression with the given arguments.
*
* @param string $x The expression to be restricted by IS NULL.
*
* @return string
*/
public function isNull($x)
{
return $x . ' IS NULL';
}
/**
* Creates an IS NOT NULL expression with the given arguments.
*
* @param string $x The expression to be restricted by IS NOT NULL.
*
* @return string
*/
public function isNotNull($x)
{
return $x . ' IS NOT NULL';
}
/**
* Creates a LIKE() comparison expression with the given arguments.
*
* @param string $x Field in string format to be inspected by LIKE() comparison.
* @param mixed $y Argument to be used in LIKE() comparison.
*
* @return string
*/
public function like($x, $y/*, ?string $escapeChar = null */)
{
return $this->comparison($x, 'LIKE', $y) .
(func_num_args() >= 3 ? sprintf(' ESCAPE %s', func_get_arg(2)) : '');
}
/**
* Creates a NOT LIKE() comparison expression with the given arguments.
*
* @param string $x Field in string format to be inspected by NOT LIKE() comparison.
* @param mixed $y Argument to be used in NOT LIKE() comparison.
*
* @return string
*/
public function notLike($x, $y/*, ?string $escapeChar = null */)
{
return $this->comparison($x, 'NOT LIKE', $y) .
(func_num_args() >= 3 ? sprintf(' ESCAPE %s', func_get_arg(2)) : '');
}
/**
* Creates a IN () comparison expression with the given arguments.
*
* @param string $x The field in string format to be inspected by IN() comparison.
* @param string|string[] $y The placeholder or the array of values to be used by IN() comparison.
*
* @return string
*/
public function in($x, $y)
{
return $this->comparison($x, 'IN', '(' . implode(', ', (array) $y) . ')');
}
/**
* Creates a NOT IN () comparison expression with the given arguments.
*
* @param string $x The expression to be inspected by NOT IN() comparison.
* @param string|string[] $y The placeholder or the array of values to be used by NOT IN() comparison.
*
* @return string
*/
public function notIn($x, $y)
{
return $this->comparison($x, 'NOT IN', '(' . implode(', ', (array) $y) . ')');
}
/**
* Quotes a given input parameter.
*
* @param mixed $input The parameter to be quoted.
* @param int|null $type The type of the parameter.
*
* @return string
*/
public function literal($input, $type = null)
{
return $this->connection->quote($input, $type);
}
}