diff --git a/migrations/Version20220925162725.php b/migrations/Version20220925162725.php
new file mode 100644
index 00000000..14608026
--- /dev/null
+++ b/migrations/Version20220925162725.php
@@ -0,0 +1,126 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use App\Migration\AbstractMultiPlatformMigration;
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20220925162725 extends AbstractMultiPlatformMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add indices to improve performance';
+    }
+
+    public function mySQLUp(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE attachments CHANGE type_id type_id INT NOT NULL');
+        $this->addSql('CREATE INDEX attachments_idx_id_element_id_class_name ON attachments (id, element_id, class_name)');
+        $this->addSql('CREATE INDEX attachments_idx_class_name_id ON attachments (class_name, id)');
+        $this->addSql('CREATE INDEX attachment_name_idx ON attachments (name)');
+        $this->addSql('CREATE INDEX attachment_element_idx ON attachments (class_name, element_id)');
+        $this->addSql('ALTER TABLE categories CHANGE partname_regex partname_regex LONGTEXT NOT NULL, CHANGE partname_hint partname_hint LONGTEXT NOT NULL, CHANGE default_description default_description LONGTEXT NOT NULL, CHANGE default_comment default_comment LONGTEXT NOT NULL');
+        $this->addSql('CREATE INDEX name_idx ON categories (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON categories (parent_id, name)');
+        $this->addSql('ALTER TABLE currencies CHANGE exchange_rate exchange_rate NUMERIC(11, 5) DEFAULT NULL COMMENT \'(DC2Type:big_decimal)\'');
+        $this->addSql('CREATE INDEX name_idx ON currencies (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON currencies (parent_id, name)');
+        $this->addSql('ALTER TABLE device_parts CHANGE mountnames mountnames LONGTEXT NOT NULL');
+        $this->addSql('CREATE INDEX name_idx ON footprints (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON footprints (parent_id, name)');
+        $this->addSql('CREATE INDEX name_idx ON groups (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON groups (parent_id, name)');
+        $this->addSql('ALTER TABLE log CHANGE level level TINYINT(4) NOT NULL');
+        $this->addSql('CREATE INDEX log_idx_type ON log (type)');
+        $this->addSql('CREATE INDEX log_idx_type_target ON log (type, target_type, target_id)');
+        $this->addSql('CREATE INDEX log_idx_datetime ON log (datetime)');
+        $this->addSql('CREATE INDEX name_idx ON manufacturers (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON manufacturers (parent_id, name)');
+        $this->addSql('CREATE INDEX name_idx ON measurement_units (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON measurement_units (parent_id, name)');
+        $this->addSql('CREATE INDEX orderdetails_supplier_part_nr ON orderdetails (supplierpartnr)');
+        $this->addSql('CREATE INDEX parameter_name_idx ON parameters (name)');
+        $this->addSql('CREATE INDEX parameter_group_idx ON parameters (param_group)');
+        $this->addSql('CREATE INDEX parameter_type_element_idx ON parameters (type, element_id)');
+        $this->addSql('CREATE INDEX part_lots_idx_instock_un_expiration_id_part ON part_lots (instock_unknown, expiration_date, id_part)');
+        $this->addSql('CREATE INDEX part_lots_idx_needs_refill ON part_lots (needs_refill)');
+        $this->addSql('ALTER TABLE parts CHANGE description description LONGTEXT NOT NULL, CHANGE comment comment LONGTEXT NOT NULL');
+        $this->addSql('CREATE INDEX parts_idx_datet_name_last_id_needs ON parts (datetime_added, name, last_modified, id, needs_review)');
+        $this->addSql('CREATE INDEX parts_idx_name ON parts (name)');
+        $this->addSql('ALTER TABLE pricedetails CHANGE price price NUMERIC(11, 5) NOT NULL COMMENT \'(DC2Type:big_decimal)\'');
+        $this->addSql('CREATE INDEX pricedetails_idx_min_discount ON pricedetails (min_discount_quantity)');
+        $this->addSql('CREATE INDEX pricedetails_idx_min_discount_price_qty ON pricedetails (min_discount_quantity, price_related_quantity)');
+        $this->addSql('CREATE INDEX name_idx ON storelocations (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON storelocations (parent_id, name)');
+        $this->addSql('ALTER TABLE suppliers CHANGE shipping_costs shipping_costs NUMERIC(11, 5) DEFAULT NULL COMMENT \'(DC2Type:big_decimal)\'');
+        $this->addSql('CREATE INDEX name_idx ON suppliers (name)');
+        $this->addSql('CREATE INDEX parent_name_idx ON suppliers (parent_id, name)');
+        $this->addSql('ALTER TABLE users CHANGE config_instock_comment_w config_instock_comment_w LONGTEXT NOT NULL, CHANGE config_instock_comment_a config_instock_comment_a LONGTEXT NOT NULL');
+        $this->addSql('CREATE INDEX user_idx_username ON users (name)');
+    }
+
+    public function mySQLDown(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('DROP INDEX attachments_idx_id_element_id_class_name ON `attachments`');
+        $this->addSql('DROP INDEX attachments_idx_class_name_id ON `attachments`');
+        $this->addSql('DROP INDEX attachment_name_idx ON `attachments`');
+        $this->addSql('DROP INDEX attachment_element_idx ON `attachments`');
+        $this->addSql('ALTER TABLE `attachments` CHANGE type_id type_id INT DEFAULT NULL');
+        $this->addSql('DROP INDEX name_idx ON `categories`');
+        $this->addSql('DROP INDEX parent_name_idx ON `categories`');
+        $this->addSql('ALTER TABLE `categories` CHANGE partname_hint partname_hint TEXT NOT NULL, CHANGE partname_regex partname_regex TEXT NOT NULL, CHANGE default_description default_description TEXT NOT NULL, CHANGE default_comment default_comment TEXT NOT NULL');
+        $this->addSql('DROP INDEX name_idx ON currencies');
+        $this->addSql('DROP INDEX parent_name_idx ON currencies');
+        $this->addSql('ALTER TABLE currencies CHANGE exchange_rate exchange_rate NUMERIC(11, 5) DEFAULT NULL');
+        $this->addSql('ALTER TABLE `device_parts` CHANGE mountnames mountnames MEDIUMTEXT NOT NULL');
+        $this->addSql('DROP INDEX name_idx ON `footprints`');
+        $this->addSql('DROP INDEX parent_name_idx ON `footprints`');
+        $this->addSql('DROP INDEX name_idx ON `groups`');
+        $this->addSql('DROP INDEX parent_name_idx ON `groups`');
+        $this->addSql('DROP INDEX log_idx_type ON log');
+        $this->addSql('DROP INDEX log_idx_type_target ON log');
+        $this->addSql('DROP INDEX log_idx_datetime ON log');
+        $this->addSql('ALTER TABLE log CHANGE level level TINYINT(1) NOT NULL');
+        $this->addSql('DROP INDEX name_idx ON `manufacturers`');
+        $this->addSql('DROP INDEX parent_name_idx ON `manufacturers`');
+        $this->addSql('DROP INDEX name_idx ON `measurement_units`');
+        $this->addSql('DROP INDEX parent_name_idx ON `measurement_units`');
+        $this->addSql('DROP INDEX orderdetails_supplier_part_nr ON `orderdetails`');
+        $this->addSql('DROP INDEX parameter_name_idx ON parameters');
+        $this->addSql('DROP INDEX parameter_group_idx ON parameters');
+        $this->addSql('DROP INDEX parameter_type_element_idx ON parameters');
+        $this->addSql('DROP INDEX parts_idx_datet_name_last_id_needs ON `parts`');
+        $this->addSql('DROP INDEX parts_idx_name ON `parts`');
+        $this->addSql('ALTER TABLE `parts` CHANGE description description MEDIUMTEXT NOT NULL, CHANGE comment comment MEDIUMTEXT NOT NULL');
+        $this->addSql('DROP INDEX part_lots_idx_instock_un_expiration_id_part ON part_lots');
+        $this->addSql('DROP INDEX part_lots_idx_needs_refill ON part_lots');
+        $this->addSql('DROP INDEX pricedetails_idx_min_discount ON `pricedetails`');
+        $this->addSql('DROP INDEX pricedetails_idx_min_discount_price_qty ON `pricedetails`');
+        $this->addSql('ALTER TABLE `pricedetails` CHANGE price price NUMERIC(11, 5) NOT NULL');
+        $this->addSql('DROP INDEX name_idx ON `storelocations`');
+        $this->addSql('DROP INDEX parent_name_idx ON `storelocations`');
+        $this->addSql('DROP INDEX name_idx ON `suppliers`');
+        $this->addSql('DROP INDEX parent_name_idx ON `suppliers`');
+        $this->addSql('ALTER TABLE `suppliers` CHANGE shipping_costs shipping_costs NUMERIC(11, 5) DEFAULT NULL');
+        $this->addSql('DROP INDEX user_idx_username ON `users`');
+        $this->addSql('ALTER TABLE `users` CHANGE config_instock_comment_a config_instock_comment_a TEXT NOT NULL, CHANGE config_instock_comment_w config_instock_comment_w TEXT NOT NULL');
+    }
+
+    public function sqLiteUp(Schema $schema): void
+    {
+        
+    }
+
+    public function sqLiteDown(Schema $schema): void
+    {
+        // TODO: Implement sqLiteDown() method.
+    }
+}
diff --git a/src/Entity/Attachments/Attachment.php b/src/Entity/Attachments/Attachment.php
index d0dbc568..b2aaca5c 100644
--- a/src/Entity/Attachments/Attachment.php
+++ b/src/Entity/Attachments/Attachment.php
@@ -34,7 +34,12 @@ use LogicException;
  * Class Attachment.
  *
  * @ORM\Entity(repositoryClass="App\Repository\AttachmentRepository")
- * @ORM\Table(name="`attachments`")
+ * @ORM\Table(name="`attachments`", indexes={
+ *    @ORM\Index(name="attachments_idx_id_element_id_class_name", columns={"id", "element_id", "class_name"}),
+ *    @ORM\Index(name="attachments_idx_class_name_id", columns={"class_name", "id"}),
+ *    @ORM\Index(name="attachment_name_idx", columns={"name"}),
+ *    @ORM\Index(name="attachment_element_idx", columns={"class_name", "element_id"})
+ * })
  * @ORM\InheritanceType("SINGLE_TABLE")
  * @ORM\DiscriminatorColumn(name="class_name", type="string")
  * @ORM\DiscriminatorMap({
@@ -104,7 +109,7 @@ abstract class Attachment extends AbstractNamedDBElement
     /**
      * @var AttachmentType
      * @ORM\ManyToOne(targetEntity="AttachmentType", inversedBy="attachments_with_type")
-     * @ORM\JoinColumn(name="type_id", referencedColumnName="id")
+     * @ORM\JoinColumn(name="type_id", referencedColumnName="id", nullable=false)
      * @Selectable()
      * @Assert\NotNull(message="validator.attachment.must_not_be_null")
      */
diff --git a/src/Entity/LogSystem/AbstractLogEntry.php b/src/Entity/LogSystem/AbstractLogEntry.php
index 54c5dcc5..a606e935 100644
--- a/src/Entity/LogSystem/AbstractLogEntry.php
+++ b/src/Entity/LogSystem/AbstractLogEntry.php
@@ -71,7 +71,11 @@ use Psr\Log\LogLevel;
  * This entity describes a entry in the event log.
  *
  * @ORM\Entity(repositoryClass="App\Repository\LogEntryRepository")
- * @ORM\Table("log")
+ * @ORM\Table("log", indexes={
+ *    @ORM\Index(name="log_idx_type", columns={"type"}),
+ *    @ORM\Index(name="log_idx_type_target", columns={"type", "target_type", "target_id"}),
+ *    @ORM\Index(name="log_idx_datetime", columns={"datetime"}),
+ * })
  * @ORM\InheritanceType("SINGLE_TABLE")
  * @ORM\DiscriminatorColumn(name="type", type="smallint")
  * @ORM\DiscriminatorMap({
diff --git a/src/Entity/Parameters/AbstractParameter.php b/src/Entity/Parameters/AbstractParameter.php
index 2a1dc45c..35342ee0 100644
--- a/src/Entity/Parameters/AbstractParameter.php
+++ b/src/Entity/Parameters/AbstractParameter.php
@@ -34,7 +34,11 @@ use function sprintf;
 
 /**
  * @ORM\Entity(repositoryClass="App\Repository\ParameterRepository")
- * @ORM\Table("parameters")
+ * @ORM\Table("parameters", indexes={
+ *    @ORM\Index(name="parameter_name_idx", columns={"name"}),
+ *    @ORM\Index(name="parameter_group_idx", columns={"param_group"}),
+ *    @ORM\Index(name="parameter_type_element_idx", columns={"type", "element_id"})
+ * })
  * @ORM\InheritanceType("SINGLE_TABLE")
  * @ORM\DiscriminatorColumn(name="type", type="smallint")
  * @ORM\DiscriminatorMap({
@@ -91,7 +95,6 @@ abstract class AbstractParameter extends AbstractNamedDBElement
 
     /**
      * @var string The unit in which the value values are given (e.g. V)
-     * @Assert\Length(max=5)
      * @ORM\Column(type="string", nullable=false)
      */
     protected string $unit = '';
diff --git a/src/Entity/Parts/Category.php b/src/Entity/Parts/Category.php
index 5401b7c4..5681f3fa 100644
--- a/src/Entity/Parts/Category.php
+++ b/src/Entity/Parts/Category.php
@@ -33,7 +33,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Class AttachmentType.
  *
  * @ORM\Entity(repositoryClass="App\Repository\Parts\CategoryRepository")
- * @ORM\Table(name="`categories`")
+ * @ORM\Table(name="`categories`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Category extends AbstractPartsContainingDBElement
 {
diff --git a/src/Entity/Parts/Footprint.php b/src/Entity/Parts/Footprint.php
index 7d2bb09d..3ab83194 100644
--- a/src/Entity/Parts/Footprint.php
+++ b/src/Entity/Parts/Footprint.php
@@ -61,7 +61,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Class Footprint.
  *
  * @ORM\Entity(repositoryClass="App\Repository\Parts\FootprintRepository")
- * @ORM\Table("`footprints`")
+ * @ORM\Table("`footprints`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Footprint extends AbstractPartsContainingDBElement
 {
diff --git a/src/Entity/Parts/Manufacturer.php b/src/Entity/Parts/Manufacturer.php
index c048f346..40ca1c3e 100644
--- a/src/Entity/Parts/Manufacturer.php
+++ b/src/Entity/Parts/Manufacturer.php
@@ -61,7 +61,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Class Manufacturer.
  *
  * @ORM\Entity(repositoryClass="App\Repository\Parts\ManufacturerRepository")
- * @ORM\Table("`manufacturers`")
+ * @ORM\Table("`manufacturers`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Manufacturer extends AbstractCompany
 {
diff --git a/src/Entity/Parts/MeasurementUnit.php b/src/Entity/Parts/MeasurementUnit.php
index 8f8dc17a..ea938b62 100644
--- a/src/Entity/Parts/MeasurementUnit.php
+++ b/src/Entity/Parts/MeasurementUnit.php
@@ -55,7 +55,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * This could be something like N, grams, meters, etc...
  *
  * @ORM\Entity(repositoryClass="App\Repository\Parts\MeasurementUnitRepository")
- * @ORM\Table(name="`measurement_units`")
+ * @ORM\Table(name="`measurement_units`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  * @UniqueEntity("unit")
  */
 class MeasurementUnit extends AbstractPartsContainingDBElement
diff --git a/src/Entity/Parts/Part.php b/src/Entity/Parts/Part.php
index bfd30ee7..00514f64 100644
--- a/src/Entity/Parts/Part.php
+++ b/src/Entity/Parts/Part.php
@@ -75,7 +75,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Otherwise this class would be too big, to be maintained.
  *
  * @ORM\Entity(repositoryClass="App\Repository\PartRepository")
- * @ORM\Table("`parts`")
+ * @ORM\Table("`parts`", indexes={
+ *    @ORM\Index(name="parts_idx_datet_name_last_id_needs", columns={"datetime_added", "name", "last_modified", "id", "needs_review"}),
+ *    @ORM\Index(name="parts_idx_name", columns={"name"}),
+ * })
  */
 class Part extends AttachmentContainingDBElement
 {
diff --git a/src/Entity/Parts/PartLot.php b/src/Entity/Parts/PartLot.php
index 498f8e63..c548507a 100644
--- a/src/Entity/Parts/PartLot.php
+++ b/src/Entity/Parts/PartLot.php
@@ -58,7 +58,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * It is the connection between a part and its store locations.
  *
  * @ORM\Entity()
- * @ORM\Table(name="part_lots")
+ * @ORM\Table(name="part_lots", indexes={
+ *    @ORM\Index(name="part_lots_idx_instock_un_expiration_id_part", columns={"instock_unknown", "expiration_date", "id_part"}),
+ *    @ORM\Index(name="part_lots_idx_needs_refill", columns={"needs_refill"}),
+ * })
  * @ORM\HasLifecycleCallbacks()
  * @ValidPartLot()
  */
diff --git a/src/Entity/Parts/Storelocation.php b/src/Entity/Parts/Storelocation.php
index a2a34681..bb33b680 100644
--- a/src/Entity/Parts/Storelocation.php
+++ b/src/Entity/Parts/Storelocation.php
@@ -61,7 +61,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Class Store location.
  *
  * @ORM\Entity(repositoryClass="App\Repository\Parts\StorelocationRepository")
- * @ORM\Table("`storelocations`")
+ * @ORM\Table("`storelocations`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Storelocation extends AbstractPartsContainingDBElement
 {
diff --git a/src/Entity/Parts/Supplier.php b/src/Entity/Parts/Supplier.php
index 45d7ae69..a2896d4d 100644
--- a/src/Entity/Parts/Supplier.php
+++ b/src/Entity/Parts/Supplier.php
@@ -65,7 +65,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Class Supplier.
  *
  * @ORM\Entity(repositoryClass="App\Repository\Parts\SupplierRepository")
- * @ORM\Table("`suppliers`")
+ * @ORM\Table("`suppliers`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Supplier extends AbstractCompany
 {
diff --git a/src/Entity/PriceInformations/Currency.php b/src/Entity/PriceInformations/Currency.php
index 0ecfd39a..c8518f31 100644
--- a/src/Entity/PriceInformations/Currency.php
+++ b/src/Entity/PriceInformations/Currency.php
@@ -59,7 +59,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  *
  * @UniqueEntity("iso_code")
  * @ORM\Entity()
- * @ORM\Table(name="currencies")
+ * @ORM\Table(name="currencies", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Currency extends AbstractStructuralDBElement
 {
diff --git a/src/Entity/PriceInformations/Orderdetail.php b/src/Entity/PriceInformations/Orderdetail.php
index 8cf69c53..1a0a3695 100644
--- a/src/Entity/PriceInformations/Orderdetail.php
+++ b/src/Entity/PriceInformations/Orderdetail.php
@@ -66,7 +66,9 @@ use Symfony\Component\Validator\Constraints as Assert;
 /**
  * Class Orderdetail.
  *
- * @ORM\Table("`orderdetails`")
+ * @ORM\Table("`orderdetails`", indexes={
+ *    @ORM\Index(name="orderdetails_supplier_part_nr", columns={"supplierpartnr"}),
+ * })
  * @ORM\Entity()
  * @ORM\HasLifecycleCallbacks()
  * @UniqueEntity({"supplierpartnr", "supplier", "part"})
diff --git a/src/Entity/PriceInformations/Pricedetail.php b/src/Entity/PriceInformations/Pricedetail.php
index 891f5add..ccaa3eba 100644
--- a/src/Entity/PriceInformations/Pricedetail.php
+++ b/src/Entity/PriceInformations/Pricedetail.php
@@ -66,7 +66,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Class Pricedetail.
  *
  * @ORM\Entity()
- * @ORM\Table("`pricedetails`")
+ * @ORM\Table("`pricedetails`", indexes={
+ *     @ORM\Index(name="pricedetails_idx_min_discount", columns={"min_discount_quantity"}),
+ *     @ORM\Index(name="pricedetails_idx_min_discount_price_qty", columns={"min_discount_quantity", "price_related_quantity"}),
+ * })
  * @ORM\HasLifecycleCallbacks()
  * @UniqueEntity(fields={"min_discount_quantity", "orderdetail"})
  */
diff --git a/src/Entity/UserSystem/Group.php b/src/Entity/UserSystem/Group.php
index e9cab853..348fcf8c 100644
--- a/src/Entity/UserSystem/Group.php
+++ b/src/Entity/UserSystem/Group.php
@@ -56,7 +56,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * This entity represents an user group.
  *
  * @ORM\Entity()
- * @ORM\Table("`groups`")
+ * @ORM\Table("`groups`", indexes={
+ *     @ORM\Index(name="name_idx", columns={"name"}),
+ *     @ORM\Index(name="parent_name_idx", columns={"parent_id", "name"}),
+ * })
  */
 class Group extends AbstractStructuralDBElement implements HasPermissionsInterface
 {
diff --git a/src/Entity/UserSystem/User.php b/src/Entity/UserSystem/User.php
index 918d459f..1ec48ca9 100644
--- a/src/Entity/UserSystem/User.php
+++ b/src/Entity/UserSystem/User.php
@@ -80,7 +80,9 @@ use Symfony\Component\Validator\Constraints as Assert;
  * Also this entity is able to save some informations about the user, like the names, email-address and other info.
  *
  * @ORM\Entity(repositoryClass="App\Repository\UserRepository")
- * @ORM\Table("`users`")
+ * @ORM\Table("`users`", indexes={
+ *    @ORM\Index(name="user_idx_username", columns={"name"})
+ * })
  * @ORM\EntityListeners({"App\EntityListeners\TreeCacheInvalidationListener"})
  * @UniqueEntity("name", message="validator.user.username_already_used")
  */