--- /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\Id;
+
+use Doctrine\ORM\EntityManager;
+
+/**
+ * Id generator that obtains IDs from special "identity" columns. These are columns
+ * that automatically get a database-generated, auto-incremented identifier on INSERT.
+ * This generator obtains the last insert id after such an insert.
+ */
+class IdentityGenerator extends AbstractIdGenerator
+{
+ /** @var string The name of the sequence to pass to lastInsertId(), if any. */
+ private $_seqName;
+
+ /**
+ * @param string $seqName The name of the sequence to pass to lastInsertId()
+ * to obtain the last generated identifier within the current
+ * database session/connection, if any.
+ */
+ public function __construct($seqName = null)
+ {
+ $this->_seqName = $seqName;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function generate(EntityManager $em, $entity)
+ {
+ return (int)$em->getConnection()->lastInsertId($this->_seqName);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function isPostInsertGenerator()
+ {
+ return true;
+ }
+}