doctrine / dbal

            $column = null;

            $defaultPrevented = false;

            if (null !== $eventManager && $eventManager->hasListeners(Events::onSchemaColumnDefinition)) {

                $eventArgs = new SchemaColumnDefinitionEventArgs($tableColumn, $table, $database, $this->_conn);

                $eventManager->dispatchEvent(Events::onSchemaColumnDefinition, $eventArgs);

                $defaultPrevented = $eventArgs->isDefaultPrevented();

                $column = $eventArgs->getColumn();

            }

            if ( ! $defaultPrevented) {

                $column = $this->_getPortableTableColumnDefinition($tableColumn);

            $index = null;

            $defaultPrevented = false;

            if (null !== $eventManager && $eventManager->hasListeners(Events::onSchemaIndexDefinition)) {

                $eventArgs = new SchemaIndexDefinitionEventArgs($data, $tableName, $this->_conn);

                $eventManager->dispatchEvent(Events::onSchemaIndexDefinition, $eventArgs);

                $defaultPrevented = $eventArgs->isDefaultPrevented();

                $index = $eventArgs->getIndex();

            }

            if ( ! $defaultPrevented) {

                $index = new Index($data['name'], $data['columns'], $data['unique'], $data['primary'], $data['flags'], $data['options']);