--- /dev/null
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Query;
+
+/**
+ * This class is used to generate DQL expressions via a set of PHP static functions
+ *
+ *
+ * @link www.doctrine-project.org
+ * @since 2.0
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Jonathan Wage <jonwage@gmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ * @todo Rename: ExpressionBuilder
+ */
+class Expr
+{
+ /**
+ * Creates a conjunction of the given boolean expressions.
+ *
+ * Example:
+ *
+ * [php]
+ * // (u.type = ?1) AND (u.role = ?2)
+ * $expr->andX($expr->eq('u.type', ':1'), $expr->eq('u.role', ':2'));
+ *
+ * @param \Doctrine\ORM\Query\Expr\Comparison |
+ * \Doctrine\ORM\Query\Expr\Func |
+ * \Doctrine\ORM\Query\Expr\Orx
+ * $x Optional clause. Defaults = null, but requires at least one defined when converting to string.
+ * @return Expr\Andx
+ */
+ public function andX($x = null)
+ {
+ return new Expr\Andx(func_get_args());
+ }
+
+ /**
+ * Creates a disjunction of the given boolean expressions.
+ *
+ * Example:
+ *
+ * [php]
+ * // (u.type = ?1) OR (u.role = ?2)
+ * $q->where($q->expr()->orX('u.type = ?1', 'u.role = ?2'));
+ *
+ * @param mixed $x Optional clause. Defaults = null, but requires
+ * at least one defined when converting to string.
+ * @return Expr\Orx
+ */
+ public function orX($x = null)
+ {
+ return new Expr\Orx(func_get_args());
+ }
+
+ /**
+ * Creates an ASCending order expression.
+ *
+ * @param $sort
+ * @return Expr\OrderBy
+ */
+ public function asc($expr)
+ {
+ return new Expr\OrderBy($expr, 'ASC');
+ }
+
+ /**
+ * Creates a DESCending order expression.
+ *
+ * @param $sort
+ * @return Expr\OrderBy
+ */
+ public function desc($expr)
+ {
+ return new Expr\OrderBy($expr, 'DESC');
+ }
+
+ /**
+ * 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 = ?1
+ * $expr->eq('u.id', '?1');
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Comparison
+ */
+ public function eq($x, $y)
+ {
+ return new Expr\Comparison($x, Expr\Comparison::EQ, $y);
+ }
+
+ /**
+ * Creates an instance of Expr\Comparison, 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 Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Comparison
+ */
+ public function neq($x, $y)
+ {
+ return new Expr\Comparison($x, Expr\Comparison::NEQ, $y);
+ }
+
+ /**
+ * Creates an instance of Expr\Comparison, 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()->lt('u.id', '?1'));
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Comparison
+ */
+ public function lt($x, $y)
+ {
+ return new Expr\Comparison($x, Expr\Comparison::LT, $y);
+ }
+
+ /**
+ * Creates an instance of Expr\Comparison, 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()->lte('u.id', '?1'));
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Comparison
+ */
+ public function lte($x, $y)
+ {
+ return new Expr\Comparison($x, Expr\Comparison::LTE, $y);
+ }
+
+ /**
+ * Creates an instance of Expr\Comparison, 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()->gt('u.id', '?1'));
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Comparison
+ */
+ public function gt($x, $y)
+ {
+ return new Expr\Comparison($x, Expr\Comparison::GT, $y);
+ }
+
+ /**
+ * Creates an instance of Expr\Comparison, 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()->gte('u.id', '?1'));
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Comparison
+ */
+ public function gte($x, $y)
+ {
+ return new Expr\Comparison($x, Expr\Comparison::GTE, $y);
+ }
+
+ /**
+ * Creates an instance of AVG() function, with the given argument.
+ *
+ * @param mixed $x Argument to be used in AVG() function.
+ * @return Expr\Func
+ */
+ public function avg($x)
+ {
+ return new Expr\Func('AVG', array($x));
+ }
+
+ /**
+ * Creates an instance of MAX() function, with the given argument.
+ *
+ * @param mixed $x Argument to be used in MAX() function.
+ * @return Expr\Func
+ */
+ public function max($x)
+ {
+ return new Expr\Func('MAX', array($x));
+ }
+
+ /**
+ * Creates an instance of MIN() function, with the given argument.
+ *
+ * @param mixed $x Argument to be used in MIN() function.
+ * @return Expr\Func
+ */
+ public function min($x)
+ {
+ return new Expr\Func('MIN', array($x));
+ }
+
+ /**
+ * Creates an instance of COUNT() function, with the given argument.
+ *
+ * @param mixed $x Argument to be used in COUNT() function.
+ * @return Expr\Func
+ */
+ public function count($x)
+ {
+ return new Expr\Func('COUNT', array($x));
+ }
+
+ /**
+ * Creates an instance of COUNT(DISTINCT) function, with the given argument.
+ *
+ * @param mixed $x Argument to be used in COUNT(DISTINCT) function.
+ * @return string
+ */
+ public function countDistinct($x)
+ {
+ return 'COUNT(DISTINCT ' . implode(', ', func_get_args()) . ')';
+ }
+
+ /**
+ * Creates an instance of EXISTS() function, with the given DQL Subquery.
+ *
+ * @param mixed $subquery DQL Subquery to be used in EXISTS() function.
+ * @return Expr\Func
+ */
+ public function exists($subquery)
+ {
+ return new Expr\Func('EXISTS', array($subquery));
+ }
+
+ /**
+ * Creates an instance of ALL() function, with the given DQL Subquery.
+ *
+ * @param mixed $subquery DQL Subquery to be used in ALL() function.
+ * @return Expr\Func
+ */
+ public function all($subquery)
+ {
+ return new Expr\Func('ALL', array($subquery));
+ }
+
+ /**
+ * Creates a SOME() function expression with the given DQL subquery.
+ *
+ * @param mixed $subquery DQL Subquery to be used in SOME() function.
+ * @return Expr\Func
+ */
+ public function some($subquery)
+ {
+ return new Expr\Func('SOME', array($subquery));
+ }
+
+ /**
+ * Creates an ANY() function expression with the given DQL subquery.
+ *
+ * @param mixed $subquery DQL Subquery to be used in ANY() function.
+ * @return Expr\Func
+ */
+ public function any($subquery)
+ {
+ return new Expr\Func('ANY', array($subquery));
+ }
+
+ /**
+ * Creates a negation expression of the given restriction.
+ *
+ * @param mixed $restriction Restriction to be used in NOT() function.
+ * @return Expr\Func
+ */
+ public function not($restriction)
+ {
+ return new Expr\Func('NOT', array($restriction));
+ }
+
+ /**
+ * Creates an ABS() function expression with the given argument.
+ *
+ * @param mixed $x Argument to be used in ABS() function.
+ * @return Expr\Func
+ */
+ public function abs($x)
+ {
+ return new Expr\Func('ABS', array($x));
+ }
+
+ /**
+ * Creates a product mathematical 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.salary * u.percentAnualSalaryIncrease
+ * $q->expr()->prod('u.salary', 'u.percentAnualSalaryIncrease')
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Math
+ */
+ public function prod($x, $y)
+ {
+ return new Expr\Math($x, '*', $y);
+ }
+
+ /**
+ * Creates a difference mathematical 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.monthlySubscriptionCount - 1
+ * $q->expr()->diff('u.monthlySubscriptionCount', '1')
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Math
+ */
+ public function diff($x, $y)
+ {
+ return new Expr\Math($x, '-', $y);
+ }
+
+ /**
+ * Creates a sum mathematical 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.numChildren + 1
+ * $q->expr()->diff('u.numChildren', '1')
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Math
+ */
+ public function sum($x, $y)
+ {
+ return new Expr\Math($x, '+', $y);
+ }
+
+ /**
+ * Creates a quotient mathematical 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.total / u.period
+ * $expr->quot('u.total', 'u.period')
+ *
+ * @param mixed $x Left expression
+ * @param mixed $y Right expression
+ * @return Expr\Math
+ */
+ public function quot($x, $y)
+ {
+ return new Expr\Math($x, '/', $y);
+ }
+
+ /**
+ * Creates a SQRT() function expression with the given argument.
+ *
+ * @param mixed $x Argument to be used in SQRT() function.
+ * @return Expr\Func
+ */
+ public function sqrt($x)
+ {
+ return new Expr\Func('SQRT', array($x));
+ }
+
+ /**
+ * Creates an IN() expression with the given arguments.
+ *
+ * @param string $x Field in string format to be restricted by IN() function
+ * @param mixed $y Argument to be used in IN() function.
+ * @return Expr\Func
+ */
+ public function in($x, $y)
+ {
+ if (is_array($y)) {
+ foreach ($y as &$literal) {
+ if ( ! ($literal instanceof Expr\Literal)) {
+ $literal = $this->_quoteLiteral($literal);
+ }
+ }
+ }
+ return new Expr\Func($x . ' IN', (array) $y);
+ }
+
+ /**
+ * Creates a NOT IN() expression with the given arguments.
+ *
+ * @param string $x Field in string format to be restricted by NOT IN() function
+ * @param mixed $y Argument to be used in NOT IN() function.
+ * @return Expr\Func
+ */
+ public function notIn($x, $y)
+ {
+ if (is_array($y)) {
+ foreach ($y as &$literal) {
+ if ( ! ($literal instanceof Expr\Literal)) {
+ $literal = $this->_quoteLiteral($literal);
+ }
+ }
+ }
+ return new Expr\Func($x . ' NOT IN', (array) $y);
+ }
+
+ /**
+ * Creates an IS NULL expression with the given arguments.
+ *
+ * @param string $x Field in string format to be restricted by IS NULL
+ * @return string
+ */
+ public function isNull($x)
+ {
+ return $x . ' IS NULL';
+ }
+
+ /**
+ * Creates an IS NOT NULL expression with the given arguments.
+ *
+ * @param string $x Field in string format to be restricted by IS NOT NULL
+ * @return string
+ */
+ public function isNotNull($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 $y Argument to be used in LIKE() comparison.
+ * @return Expr\Comparison
+ */
+ public function like($x, $y)
+ {
+ return new Expr\Comparison($x, 'LIKE', $y);
+ }
+
+ /**
+ * Creates a CONCAT() function expression with the given arguments.
+ *
+ * @param mixed $x First argument to be used in CONCAT() function.
+ * @param mixed $x Second argument to be used in CONCAT() function.
+ * @return Expr\Func
+ */
+ public function concat($x, $y)
+ {
+ return new Expr\Func('CONCAT', array($x, $y));
+ }
+
+ /**
+ * Creates a SUBSTRING() function expression with the given arguments.
+ *
+ * @param mixed $x Argument to be used as string to be cropped by SUBSTRING() function.
+ * @param integer $from Initial offset to start cropping string. May accept negative values.
+ * @param integer $len Length of crop. May accept negative values.
+ * @return Expr\Func
+ */
+ public function substring($x, $from, $len = null)
+ {
+ $args = array($x, $from);
+ if (null !== $len) {
+ $args[] = $len;
+ }
+ return new Expr\Func('SUBSTRING', $args);
+ }
+
+ /**
+ * Creates a LOWER() function expression with the given argument.
+ *
+ * @param mixed $x Argument to be used in LOWER() function.
+ * @return Expr\Func A LOWER function expression.
+ */
+ public function lower($x)
+ {
+ return new Expr\Func('LOWER', array($x));
+ }
+
+ /**
+ * Creates an UPPER() function expression with the given argument.
+ *
+ * @param mixed $x Argument to be used in UPPER() function.
+ * @return Expr\Func An UPPER function expression.
+ */
+ public function upper($x)
+ {
+ return new Expr\Func('UPPER', array($x));
+ }
+
+ /**
+ * Creates a LENGTH() function expression with the given argument.
+ *
+ * @param mixed $x Argument to be used as argument of LENGTH() function.
+ * @return Expr\Func A LENGTH function expression.
+ */
+ public function length($x)
+ {
+ return new Expr\Func('LENGTH', array($x));
+ }
+
+ /**
+ * Creates a literal expression of the given argument.
+ *
+ * @param mixed $literal Argument to be converted to literal.
+ * @return Expr\Literal
+ */
+ public function literal($literal)
+ {
+ return new Expr\Literal($this->_quoteLiteral($literal));
+ }
+
+ /**
+ * Quotes a literal value, if necessary, according to the DQL syntax.
+ *
+ * @param mixed $literal The literal value.
+ * @return string
+ */
+ private function _quoteLiteral($literal)
+ {
+ if (is_numeric($literal) && !is_string($literal)) {
+ return (string) $literal;
+ } else if (is_bool($literal)) {
+ return $literal ? "true" : "false";
+ } else {
+ return "'" . str_replace("'", "''", $literal) . "'";
+ }
+ }
+
+ /**
+ * Creates an instance of BETWEEN() function, with the given argument.
+ *
+ * @param mixed $val Valued to be inspected by range values.
+ * @param integer $x Starting range value to be used in BETWEEN() function.
+ * @param integer $y End point value to be used in BETWEEN() function.
+ * @return Expr\Func A BETWEEN expression.
+ */
+ public function between($val, $x, $y)
+ {
+ return $val . ' BETWEEN ' . $x . ' AND ' . $y;
+ }
+
+ /**
+ * Creates an instance of TRIM() function, with the given argument.
+ *
+ * @param mixed $x Argument to be used as argument of TRIM() function.
+ * @return Expr\Func a TRIM expression.
+ */
+ public function trim($x)
+ {
+ return new Expr\Func('TRIM', $x);
+ }
+}