diff -r 000000000000 -r 7f95f8617b0b vendor/doctrine/lib/Doctrine/ORM/Query/AST/Functions/SubstringFunction.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/doctrine/lib/Doctrine/ORM/Query/AST/Functions/SubstringFunction.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,82 @@
+<?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 LGPL. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Query\AST\Functions;
+
+use Doctrine\ORM\Query\Lexer;
+
+/**
+ * "SUBSTRING" "(" StringPrimary "," SimpleArithmeticExpression "," SimpleArithmeticExpression ")"
+ *
+ * @license http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @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>
+ */
+class SubstringFunction extends FunctionNode
+{
+    public $stringPrimary;
+    public $firstSimpleArithmeticExpression;
+    public $secondSimpleArithmeticExpression = null;
+
+    /**
+     * @override
+     */
+    public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
+    {
+        $optionalSecondSimpleArithmeticExpression = null;
+        if ($this->secondSimpleArithmeticExpression !== null) {
+            $optionalSecondSimpleArithmeticExpression = $sqlWalker->walkSimpleArithmeticExpression($this->secondSimpleArithmeticExpression);
+        }
+
+        return $sqlWalker->getConnection()->getDatabasePlatform()->getSubstringExpression(
+            $sqlWalker->walkStringPrimary($this->stringPrimary),
+            $sqlWalker->walkSimpleArithmeticExpression($this->firstSimpleArithmeticExpression),
+            $optionalSecondSimpleArithmeticExpression
+        );
+    }
+
+    /**
+     * @override
+     */
+    public function parse(\Doctrine\ORM\Query\Parser $parser)
+    {
+        $parser->match(Lexer::T_IDENTIFIER);
+        $parser->match(Lexer::T_OPEN_PARENTHESIS);
+
+        $this->stringPrimary = $parser->StringPrimary();
+        
+        $parser->match(Lexer::T_COMMA);
+        
+        $this->firstSimpleArithmeticExpression = $parser->SimpleArithmeticExpression();
+
+        $lexer = $parser->getLexer();
+        if ($lexer->isNextToken(Lexer::T_COMMA)) {
+            $parser->match(Lexer::T_COMMA);
+        
+            $this->secondSimpleArithmeticExpression = $parser->SimpleArithmeticExpression();
+        }
+
+        $parser->match(Lexer::T_CLOSE_PARENTHESIS);
+    }
+}
+