--- /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;
+
+/**
+ * Container for all ORM events.
+ *
+ * This class cannot be instantiated.
+ *
+ * @author Roman Borschel <roman@code-factory.org>
+ * @since 2.0
+ */
+final class Events
+{
+ private function __construct() {}
+ /**
+ * The preRemove event occurs for a given entity before the respective
+ * EntityManager remove operation for that entity is executed.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const preRemove = 'preRemove';
+ /**
+ * The postRemove event occurs for an entity after the entity has
+ * been deleted. It will be invoked after the database delete operations.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const postRemove = 'postRemove';
+ /**
+ * The prePersist event occurs for a given entity before the respective
+ * EntityManager persist operation for that entity is executed.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const prePersist = 'prePersist';
+ /**
+ * The postPersist event occurs for an entity after the entity has
+ * been made persistent. It will be invoked after the database insert operations.
+ * Generated primary key values are available in the postPersist event.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const postPersist = 'postPersist';
+ /**
+ * The preUpdate event occurs before the database update operations to
+ * entity data.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const preUpdate = 'preUpdate';
+ /**
+ * The postUpdate event occurs after the database update operations to
+ * entity data.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const postUpdate = 'postUpdate';
+ /**
+ * The postLoad event occurs for an entity after the entity has been loaded
+ * into the current EntityManager from the database or after the refresh operation
+ * has been applied to it.
+ *
+ * Note that the postLoad event occurs for an entity before any associations have been
+ * initialized. Therefore it is not safe to access associations in a postLoad callback
+ * or event handler.
+ *
+ * This is an entity lifecycle event.
+ *
+ * @var string
+ */
+ const postLoad = 'postLoad';
+ /**
+ * The loadClassMetadata event occurs after the mapping metadata for a class
+ * has been loaded from a mapping source (annotations/xml/yaml).
+ *
+ * @var string
+ */
+ const loadClassMetadata = 'loadClassMetadata';
+
+ /**
+ * The preFlush event occurs when the EntityManager#flush() operation is invoked,
+ * but before any changes to managed entites have been calculated. This event is
+ * always raised right after EntityManager#flush() call.
+ */
+ const preFlush = 'preFlush';
+
+ /**
+ * The onFlush event occurs when the EntityManager#flush() operation is invoked,
+ * after any changes to managed entities have been determined but before any
+ * actual database operations are executed. The event is only raised if there is
+ * actually something to do for the underlying UnitOfWork. If nothing needs to be done,
+ * the onFlush event is not raised.
+ *
+ * @var string
+ */
+ const onFlush = 'onFlush';
+
+ /**
+ * The postFlush event occurs when the EntityManager#flush() operation is invoked and
+ * after all actual database operations are executed successfully. The event is only raised if there is
+ * actually something to do for the underlying UnitOfWork. If nothing needs to be done,
+ * the postFlush event is not raised. The event won't be raised if an error occurs during the
+ * flush operation.
+ *
+ * @var string
+ */
+ const postFlush = 'postFlush';
+
+ /**
+ * The onClear event occurs when the EntityManager#clear() operation is invoked,
+ * after all references to entities have been removed from the unit of work.
+ *
+ * @var string
+ */
+ const onClear = 'onClear';
+}