Complete refactoring: replace inheritance with trait composition

Refactored remaining entities to use trait composition instead of inheritance:
- MeasurementUnit - uses all structural traits directly
- PartCustomState - uses all structural traits directly
- Manufacturer - uses all structural traits + CompanyTrait
- Supplier - uses all structural traits + CompanyTrait
- AttachmentType - uses all structural traits directly

All entities now use explicit trait composition with:
- DBElementTrait, NamedElementTrait, TimestampTrait
- AttachmentsTrait, MasterAttachmentTrait
- StructuralElementTrait, ParametersTrait
- CompanyTrait (for Manufacturer and Supplier)

All entities implement required interfaces directly instead of inheriting them.

Co-authored-by: jbtronics <5410681+jbtronics@users.noreply.github.com>

src/Entity/Attachments/AttachmentType.php

@@ -52,12 +52,14 @@ use Symfony\Component\Validator\Constraints as Assert;
 /**
  * Class AttachmentType.
  * @see \App\Tests\Entity\Attachments\AttachmentTypeTest
- * @extends AbstractStructuralDBElement<AttachmentTypeAttachment, AttachmentTypeParameter>
  */
 #[ORM\Entity(repositoryClass: StructuralDBElementRepository::class)]
 #[ORM\Table(name: '`attachment_types`')]
 #[ORM\Index(columns: ['name'], name: 'attachment_types_idx_name')]
 #[ORM\Index(columns: ['parent_id', 'name'], name: 'attachment_types_idx_parent_name')]
+#[ORM\HasLifecycleCallbacks]
+#[ORM\EntityListeners([TreeCacheInvalidationListener::class])]
+#[UniqueEntity(fields: ['name', 'parent'], message: 'structural.entity.unique_name', ignoreNull: false)]
 #[ApiResource(
     operations: [
         new Get(security: 'is_granted("read", object)'),
@@ -84,8 +86,16 @@ use Symfony\Component\Validator\Constraints as Assert;
 #[ApiFilter(LikeFilter::class, properties: ["name", "comment"])]
 #[ApiFilter(DateFilter::class, strategy: DateFilterInterface::EXCLUDE_NULL)]
 #[ApiFilter(OrderFilter::class, properties: ['name', 'id', 'addedDate', 'lastModified'])]
-class AttachmentType extends AbstractStructuralDBElement
+class AttachmentType implements DBElementInterface, NamedElementInterface, TimeStampableInterface, HasAttachmentsInterface, HasMasterAttachmentInterface, StructuralElementInterface, HasParametersInterface, \Stringable, \JsonSerializable
 {
+    use DBElementTrait;
+    use NamedElementTrait;
+    use TimestampTrait;
+    use AttachmentsTrait;
+    use MasterAttachmentTrait;
+    use StructuralElementTrait;
+    use ParametersTrait;
+
     #[ORM\OneToMany(mappedBy: 'parent', targetEntity: AttachmentType::class, cascade: ['persist'])]
     #[ORM\OrderBy(['name' => Criteria::ASC])]
     protected Collection $children;
@@ -94,7 +104,10 @@ class AttachmentType extends AbstractStructuralDBElement
     #[ORM\JoinColumn(name: 'parent_id')]
     #[Groups(['attachment_type:read', 'attachment_type:write'])]
     #[ApiProperty(readableLink: true, writableLink: false)]
-    protected ?AbstractStructuralDBElement $parent = null;
+    protected ?self $parent = null;
+
+    #[Groups(['attachment_type:read', 'attachment_type:write'])]
+    protected string $comment = '';
 
     /**
      * @var string A comma separated list of file types, which are allowed for attachment files.
@@ -123,6 +136,7 @@ class AttachmentType extends AbstractStructuralDBElement
     /** @var Collection<int, AttachmentTypeParameter>
      */
     #[Assert\Valid]
+    #[UniqueObjectCollection(fields: ['name', 'group', 'element'])]
     #[ORM\OneToMany(mappedBy: 'element', targetEntity: AttachmentTypeParameter::class, cascade: ['persist', 'remove'], orphanRemoval: true)]
     #[ORM\OrderBy(['group' => Criteria::ASC, 'name' => 'ASC'])]
     #[Groups(['attachment_type:read', 'attachment_type:write', 'import', 'full'])]
@@ -142,13 +156,37 @@ class AttachmentType extends AbstractStructuralDBElement
 
     public function __construct()
     {
+        $this->initializeAttachments();
+        $this->initializeStructuralElement();
         $this->children = new ArrayCollection();
         $this->parameters = new ArrayCollection();
-        parent::__construct();
         $this->attachments = new ArrayCollection();
         $this->attachments_with_type = new ArrayCollection();
     }
 
+    public function __clone()
+    {
+        if ($this->id) {
+            $this->cloneDBElement();
+            $this->cloneAttachments();
+            
+            // We create a new object, so give it a new creation date
+            $this->addedDate = null;
+            
+            //Deep clone parameters
+            $parameters = $this->parameters;
+            $this->parameters = new ArrayCollection();
+            foreach ($parameters as $parameter) {
+                $this->addParameter(clone $parameter);
+            }
+        }
+    }
+
+    public function jsonSerialize(): array
+    {
+        return ['@id' => $this->getID()];
+    }
+
     /**
      * Get all attachments ("Attachment" objects) with this type.
      *

src/Entity/Parts/Manufacturer.php

@@ -39,26 +39,44 @@ use ApiPlatform\OpenApi\Model\Operation;
 use ApiPlatform\Serializer\Filter\PropertyFilter;
 use App\ApiPlatform\Filter\LikeFilter;
 use App\Entity\Attachments\Attachment;
+use App\Entity\Base\AttachmentsTrait;
+use App\Entity\Base\CompanyTrait;
+use App\Entity\Base\DBElementTrait;
+use App\Entity\Base\MasterAttachmentTrait;
+use App\Entity\Base\NamedElementTrait;
+use App\Entity\Base\StructuralElementTrait;
+use App\Entity\Base\TimestampTrait;
+use App\Entity\Contracts\CompanyInterface;
+use App\Entity\Contracts\DBElementInterface;
+use App\Entity\Contracts\HasAttachmentsInterface;
+use App\Entity\Contracts\HasMasterAttachmentInterface;
+use App\Entity\Contracts\HasParametersInterface;
+use App\Entity\Contracts\NamedElementInterface;
+use App\Entity\Contracts\StructuralElementInterface;
+use App\Entity\Contracts\TimeStampableInterface;
+use App\Entity\Parameters\ParametersTrait;
+use App\EntityListeners\TreeCacheInvalidationListener;
 use App\Repository\Parts\ManufacturerRepository;
-use App\Entity\Base\AbstractStructuralDBElement;
+use App\Validator\Constraints\UniqueObjectCollection;
 use Doctrine\Common\Collections\ArrayCollection;
 use App\Entity\Attachments\ManufacturerAttachment;
-use App\Entity\Base\AbstractCompany;
 use App\Entity\Parameters\ManufacturerParameter;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Serializer\Annotation\Groups;
 use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * This entity represents a manufacturer of a part (The company that produces the part).
- *
- * @extends AbstractCompany<ManufacturerAttachment, ManufacturerParameter>
  */
 #[ORM\Entity(repositoryClass: ManufacturerRepository::class)]
 #[ORM\Table('`manufacturers`')]
 #[ORM\Index(columns: ['name'], name: 'manufacturer_name')]
 #[ORM\Index(columns: ['parent_id', 'name'], name: 'manufacturer_idx_parent_name')]
+#[ORM\HasLifecycleCallbacks]
+#[ORM\EntityListeners([TreeCacheInvalidationListener::class])]
+#[UniqueEntity(fields: ['name', 'parent'], message: 'structural.entity.unique_name', ignoreNull: false)]
 #[ApiResource(
     operations: [
         new Get(security: 'is_granted("read", object)'),
@@ -87,13 +105,22 @@ use Symfony\Component\Validator\Constraints as Assert;
 #[ApiFilter(LikeFilter::class, properties: ["name", "comment"])]
 #[ApiFilter(DateFilter::class, strategy: DateFilterInterface::EXCLUDE_NULL)]
 #[ApiFilter(OrderFilter::class, properties: ['name', 'id', 'addedDate', 'lastModified'])]
-class Manufacturer extends AbstractCompany
+class Manufacturer implements DBElementInterface, NamedElementInterface, TimeStampableInterface, HasAttachmentsInterface, HasMasterAttachmentInterface, StructuralElementInterface, HasParametersInterface, CompanyInterface, \Stringable, \JsonSerializable
 {
+    use DBElementTrait;
+    use NamedElementTrait;
+    use TimestampTrait;
+    use AttachmentsTrait;
+    use MasterAttachmentTrait;
+    use StructuralElementTrait;
+    use ParametersTrait;
+    use CompanyTrait;
+
     #[ORM\ManyToOne(targetEntity: self::class, inversedBy: 'children')]
     #[ORM\JoinColumn(name: 'parent_id')]
     #[Groups(['manufacturer:read', 'manufacturer:write'])]
     #[ApiProperty(readableLink: false, writableLink: false)]
-    protected ?AbstractStructuralDBElement $parent = null;
+    protected ?self $parent = null;
 
     #[ORM\OneToMany(mappedBy: 'parent', targetEntity: self::class)]
     #[ORM\OrderBy(['name' => Criteria::ASC])]
@@ -118,16 +145,50 @@ class Manufacturer extends AbstractCompany
     /** @var Collection<int, ManufacturerParameter>
      */
     #[Assert\Valid]
+    #[UniqueObjectCollection(fields: ['name', 'group', 'element'])]
     #[ORM\OneToMany(mappedBy: 'element', targetEntity: ManufacturerParameter::class, cascade: ['persist', 'remove'], orphanRemoval: true)]
     #[ORM\OrderBy(['group' => Criteria::ASC, 'name' => 'ASC'])]
     #[Groups(['manufacturer:read', 'manufacturer:write'])]
     #[ApiProperty(readableLink: false, writableLink: true)]
     protected Collection $parameters;
+    
+    #[Groups(['manufacturer:read', 'manufacturer:write'])]
+    protected string $comment = '';
+    
+    #[Groups(['manufacturer:read'])]
+    protected ?\DateTimeImmutable $addedDate = null;
+    #[Groups(['manufacturer:read'])]
+    protected ?\DateTimeImmutable $lastModified = null;
+    
     public function __construct()
     {
-        parent::__construct();
+        $this->initializeAttachments();
+        $this->initializeStructuralElement();
         $this->children = new ArrayCollection();
         $this->attachments = new ArrayCollection();
         $this->parameters = new ArrayCollection();
     }
+
+    public function __clone()
+    {
+        if ($this->id) {
+            $this->cloneDBElement();
+            $this->cloneAttachments();
+            
+            // We create a new object, so give it a new creation date
+            $this->addedDate = null;
+            
+            //Deep clone parameters
+            $parameters = $this->parameters;
+            $this->parameters = new ArrayCollection();
+            foreach ($parameters as $parameter) {
+                $this->addParameter(clone $parameter);
+            }
+        }
+    }
+
+    public function jsonSerialize(): array
+    {
+        return ['@id' => $this->getID()];
+    }
 }

src/Entity/Parts/MeasurementUnit.php

@@ -39,12 +39,26 @@ use ApiPlatform\OpenApi\Model\Operation;
 use ApiPlatform\Serializer\Filter\PropertyFilter;
 use App\ApiPlatform\Filter\LikeFilter;
 use App\Entity\Attachments\Attachment;
+use App\Entity\Base\AttachmentsTrait;
+use App\Entity\Base\DBElementTrait;
+use App\Entity\Base\MasterAttachmentTrait;
+use App\Entity\Base\NamedElementTrait;
+use App\Entity\Base\StructuralElementTrait;
+use App\Entity\Base\TimestampTrait;
+use App\Entity\Contracts\DBElementInterface;
+use App\Entity\Contracts\HasAttachmentsInterface;
+use App\Entity\Contracts\HasMasterAttachmentInterface;
+use App\Entity\Contracts\HasParametersInterface;
+use App\Entity\Contracts\NamedElementInterface;
+use App\Entity\Contracts\StructuralElementInterface;
+use App\Entity\Contracts\TimeStampableInterface;
+use App\Entity\Parameters\ParametersTrait;
+use App\EntityListeners\TreeCacheInvalidationListener;
 use App\Repository\Parts\MeasurementUnitRepository;
+use App\Validator\Constraints\UniqueObjectCollection;
 use Doctrine\DBAL\Types\Types;
-use App\Entity\Base\AbstractStructuralDBElement;
 use Doctrine\Common\Collections\ArrayCollection;
 use App\Entity\Attachments\MeasurementUnitAttachment;
-use App\Entity\Base\AbstractPartsContainingDBElement;
 use App\Entity\Parameters\MeasurementUnitParameter;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
@@ -56,14 +70,15 @@ use Symfony\Component\Validator\Constraints\Length;
 /**
  * This unit represents the unit in which the amount of parts in stock are measured.
  * This could be something like N, grams, meters, etc...
- *
- * @extends AbstractPartsContainingDBElement<MeasurementUnitAttachment,MeasurementUnitParameter>
  */
 #[UniqueEntity('unit')]
 #[ORM\Entity(repositoryClass: MeasurementUnitRepository::class)]
 #[ORM\Table(name: '`measurement_units`')]
 #[ORM\Index(columns: ['name'], name: 'unit_idx_name')]
 #[ORM\Index(columns: ['parent_id', 'name'], name: 'unit_idx_parent_name')]
+#[ORM\HasLifecycleCallbacks]
+#[ORM\EntityListeners([TreeCacheInvalidationListener::class])]
+#[UniqueEntity(fields: ['name', 'parent'], message: 'structural.entity.unique_name', ignoreNull: false)]
 #[ApiResource(
     operations: [
         new Get(security: 'is_granted("read", object)'),
@@ -92,8 +107,15 @@ use Symfony\Component\Validator\Constraints\Length;
 #[ApiFilter(LikeFilter::class, properties: ["name", "comment", "unit"])]
 #[ApiFilter(DateFilter::class, strategy: DateFilterInterface::EXCLUDE_NULL)]
 #[ApiFilter(OrderFilter::class, properties: ['name', 'id', 'addedDate', 'lastModified'])]
-class MeasurementUnit extends AbstractPartsContainingDBElement
+class MeasurementUnit implements DBElementInterface, NamedElementInterface, TimeStampableInterface, HasAttachmentsInterface, HasMasterAttachmentInterface, StructuralElementInterface, HasParametersInterface, \Stringable, \JsonSerializable
 {
+    use DBElementTrait;
+    use NamedElementTrait;
+    use TimestampTrait;
+    use AttachmentsTrait;
+    use MasterAttachmentTrait;
+    use StructuralElementTrait;
+    use ParametersTrait;
     /**
      * @var string The unit symbol that should be used for the Unit. This could be something like "", g (for grams)
      *             or m (for meters).
@@ -131,7 +153,7 @@ class MeasurementUnit extends AbstractPartsContainingDBElement
     #[ORM\JoinColumn(name: 'parent_id')]
     #[Groups(['measurement_unit:read', 'measurement_unit:write'])]
     #[ApiProperty(readableLink: false, writableLink: false)]
-    protected ?AbstractStructuralDBElement $parent = null;
+    protected ?self $parent = null;
 
     /**
      * @var Collection<int, MeasurementUnitAttachment>
@@ -150,6 +172,7 @@ class MeasurementUnit extends AbstractPartsContainingDBElement
     /** @var Collection<int, MeasurementUnitParameter>
      */
     #[Assert\Valid]
+    #[UniqueObjectCollection(fields: ['name', 'group', 'element'])]
     #[ORM\OneToMany(mappedBy: 'element', targetEntity: MeasurementUnitParameter::class, cascade: ['persist', 'remove'], orphanRemoval: true)]
     #[ORM\OrderBy(['group' => Criteria::ASC, 'name' => 'ASC'])]
     #[Groups(['measurement_unit:read', 'measurement_unit:write'])]
@@ -201,9 +224,33 @@ class MeasurementUnit extends AbstractPartsContainingDBElement
     }
     public function __construct()
     {
-        parent::__construct();
+        $this->initializeAttachments();
+        $this->initializeStructuralElement();
         $this->children = new ArrayCollection();
         $this->attachments = new ArrayCollection();
         $this->parameters = new ArrayCollection();
     }
+
+    public function __clone()
+    {
+        if ($this->id) {
+            $this->cloneDBElement();
+            $this->cloneAttachments();
+            
+            // We create a new object, so give it a new creation date
+            $this->addedDate = null;
+            
+            //Deep clone parameters
+            $parameters = $this->parameters;
+            $this->parameters = new ArrayCollection();
+            foreach ($parameters as $parameter) {
+                $this->addParameter(clone $parameter);
+            }
+        }
+    }
+
+    public function jsonSerialize(): array
+    {
+        return ['@id' => $this->getID()];
+    }
 }

src/Entity/Parts/PartCustomState.php

@@ -37,26 +37,42 @@ use ApiPlatform\Metadata\Patch;
 use ApiPlatform\Metadata\Post;
 use ApiPlatform\Serializer\Filter\PropertyFilter;
 use App\ApiPlatform\Filter\LikeFilter;
-use App\Entity\Base\AbstractPartsContainingDBElement;
+use App\Entity\Base\AttachmentsTrait;
-use App\Entity\Base\AbstractStructuralDBElement;
+use App\Entity\Base\DBElementTrait;
+use App\Entity\Base\MasterAttachmentTrait;
+use App\Entity\Base\NamedElementTrait;
+use App\Entity\Base\StructuralElementTrait;
+use App\Entity\Base\TimestampTrait;
+use App\Entity\Contracts\DBElementInterface;
+use App\Entity\Contracts\HasAttachmentsInterface;
+use App\Entity\Contracts\HasMasterAttachmentInterface;
+use App\Entity\Contracts\HasParametersInterface;
+use App\Entity\Contracts\NamedElementInterface;
+use App\Entity\Contracts\StructuralElementInterface;
+use App\Entity\Contracts\TimeStampableInterface;
 use App\Entity\Parameters\PartCustomStateParameter;
+use App\Entity\Parameters\ParametersTrait;
+use App\EntityListeners\TreeCacheInvalidationListener;
 use App\Repository\Parts\PartCustomStateRepository;
+use App\Validator\Constraints\UniqueObjectCollection;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Serializer\Annotation\Groups;
 use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * This entity represents a custom part state.
  * If an organisation uses Part-DB and has its custom part states, this is useful.
- *
- * @extends AbstractPartsContainingDBElement<PartCustomStateAttachment,PartCustomStateParameter>
  */
 #[ORM\Entity(repositoryClass: PartCustomStateRepository::class)]
 #[ORM\Table('`part_custom_states`')]
 #[ORM\Index(columns: ['name'], name: 'part_custom_state_name')]
+#[ORM\HasLifecycleCallbacks]
+#[ORM\EntityListeners([TreeCacheInvalidationListener::class])]
+#[UniqueEntity(fields: ['name', 'parent'], message: 'structural.entity.unique_name', ignoreNull: false)]
 #[ApiResource(
     operations: [
         new Get(security: 'is_granted("read", object)'),
@@ -72,8 +88,16 @@ use Symfony\Component\Validator\Constraints as Assert;
 #[ApiFilter(LikeFilter::class, properties: ["name"])]
 #[ApiFilter(DateFilter::class, strategy: DateFilterInterface::EXCLUDE_NULL)]
 #[ApiFilter(OrderFilter::class, properties: ['name', 'id', 'addedDate', 'lastModified'])]
-class PartCustomState extends AbstractPartsContainingDBElement
+class PartCustomState implements DBElementInterface, NamedElementInterface, TimeStampableInterface, HasAttachmentsInterface, HasMasterAttachmentInterface, StructuralElementInterface, HasParametersInterface, \Stringable, \JsonSerializable
 {
+    use DBElementTrait;
+    use NamedElementTrait;
+    use TimestampTrait;
+    use AttachmentsTrait;
+    use MasterAttachmentTrait;
+    use StructuralElementTrait;
+    use ParametersTrait;
+
     /**
      * @var string The comment info for this element as markdown
      */
@@ -88,7 +112,7 @@ class PartCustomState extends AbstractPartsContainingDBElement
     #[ORM\JoinColumn(name: 'parent_id')]
     #[Groups(['part_custom_state:read', 'part_custom_state:write'])]
     #[ApiProperty(readableLink: false, writableLink: false)]
-    protected ?AbstractStructuralDBElement $parent = null;
+    protected ?self $parent = null;
 
     /**
      * @var Collection<int, PartCustomStateAttachment>
@@ -107,6 +131,7 @@ class PartCustomState extends AbstractPartsContainingDBElement
     /** @var Collection<int, PartCustomStateParameter>
      */
     #[Assert\Valid]
+    #[UniqueObjectCollection(fields: ['name', 'group', 'element'])]
     #[ORM\OneToMany(mappedBy: 'element', targetEntity: PartCustomStateParameter::class, cascade: ['persist', 'remove'], orphanRemoval: true)]
     #[ORM\OrderBy(['name' => 'ASC'])]
     #[Groups(['part_custom_state:read', 'part_custom_state:write'])]
@@ -119,9 +144,33 @@ class PartCustomState extends AbstractPartsContainingDBElement
 
     public function __construct()
     {
-        parent::__construct();
+        $this->initializeAttachments();
+        $this->initializeStructuralElement();
         $this->children = new ArrayCollection();
         $this->attachments = new ArrayCollection();
         $this->parameters = new ArrayCollection();
     }
+
+    public function __clone()
+    {
+        if ($this->id) {
+            $this->cloneDBElement();
+            $this->cloneAttachments();
+            
+            // We create a new object, so give it a new creation date
+            $this->addedDate = null;
+            
+            //Deep clone parameters
+            $parameters = $this->parameters;
+            $this->parameters = new ArrayCollection();
+            foreach ($parameters as $parameter) {
+                $this->addParameter(clone $parameter);
+            }
+        }
+    }
+
+    public function jsonSerialize(): array
+    {
+        return ['@id' => $this->getID()];
+    }
 }

src/Entity/Parts/Supplier.php

@@ -39,12 +39,28 @@ use ApiPlatform\OpenApi\Model\Operation;
 use ApiPlatform\Serializer\Filter\PropertyFilter;
 use App\ApiPlatform\Filter\LikeFilter;
 use App\Entity\Attachments\Attachment;
+use App\Entity\Base\AttachmentsTrait;
+use App\Entity\Base\CompanyTrait;
+use App\Entity\Base\DBElementTrait;
+use App\Entity\Base\MasterAttachmentTrait;
+use App\Entity\Base\NamedElementTrait;
+use App\Entity\Base\StructuralElementTrait;
+use App\Entity\Base\TimestampTrait;
+use App\Entity\Contracts\CompanyInterface;
+use App\Entity\Contracts\DBElementInterface;
+use App\Entity\Contracts\HasAttachmentsInterface;
+use App\Entity\Contracts\HasMasterAttachmentInterface;
+use App\Entity\Contracts\HasParametersInterface;
+use App\Entity\Contracts\NamedElementInterface;
+use App\Entity\Contracts\StructuralElementInterface;
+use App\Entity\Contracts\TimeStampableInterface;
+use App\Entity\Parameters\ParametersTrait;
+use App\EntityListeners\TreeCacheInvalidationListener;
 use App\Repository\Parts\SupplierRepository;
 use App\Entity\PriceInformations\Orderdetail;
+use App\Validator\Constraints\UniqueObjectCollection;
 use Doctrine\Common\Collections\ArrayCollection;
 use App\Entity\Attachments\SupplierAttachment;
-use App\Entity\Base\AbstractCompany;
-use App\Entity\Base\AbstractStructuralDBElement;
 use App\Entity\Parameters\SupplierParameter;
 use App\Entity\PriceInformations\Currency;
 use App\Validator\Constraints\BigDecimal\BigDecimalPositiveOrZero;
@@ -52,18 +68,20 @@ use App\Validator\Constraints\Selectable;
 use Brick\Math\BigDecimal;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Serializer\Annotation\Groups;
 use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * This entity represents a supplier of parts (the company that sells the parts).
- *
- * @extends AbstractCompany<SupplierAttachment, SupplierParameter>
  */
 #[ORM\Entity(repositoryClass: SupplierRepository::class)]
 #[ORM\Table('`suppliers`')]
 #[ORM\Index(columns: ['name'], name: 'supplier_idx_name')]
 #[ORM\Index(columns: ['parent_id', 'name'], name: 'supplier_idx_parent_name')]
+#[ORM\HasLifecycleCallbacks]
+#[ORM\EntityListeners([TreeCacheInvalidationListener::class])]
+#[UniqueEntity(fields: ['name', 'parent'], message: 'structural.entity.unique_name', ignoreNull: false)]
 #[ApiResource(
     operations: [
         new Get(security: 'is_granted("read", object)'),
@@ -90,8 +108,17 @@ use Symfony\Component\Validator\Constraints as Assert;
 #[ApiFilter(LikeFilter::class, properties: ["name", "comment"])]
 #[ApiFilter(DateFilter::class, strategy: DateFilterInterface::EXCLUDE_NULL)]
 #[ApiFilter(OrderFilter::class, properties: ['name', 'id', 'addedDate', 'lastModified'])]
-class Supplier extends AbstractCompany
+class Supplier implements DBElementInterface, NamedElementInterface, TimeStampableInterface, HasAttachmentsInterface, HasMasterAttachmentInterface, StructuralElementInterface, HasParametersInterface, CompanyInterface, \Stringable, \JsonSerializable
 {
+    use DBElementTrait;
+    use NamedElementTrait;
+    use TimestampTrait;
+    use AttachmentsTrait;
+    use MasterAttachmentTrait;
+    use StructuralElementTrait;
+    use ParametersTrait;
+    use CompanyTrait;
+
     #[ORM\OneToMany(mappedBy: 'parent', targetEntity: self::class)]
     #[ORM\OrderBy(['name' => Criteria::ASC])]
     protected Collection $children;
@@ -100,7 +127,7 @@ class Supplier extends AbstractCompany
     #[ORM\JoinColumn(name: 'parent_id')]
     #[Groups(['supplier:read', 'supplier:write'])]
     #[ApiProperty(readableLink: false, writableLink: false)]
-    protected ?AbstractStructuralDBElement $parent = null;
+    protected ?self $parent = null;
 
     /**
      * @var Collection<int, Orderdetail>
@@ -144,12 +171,21 @@ class Supplier extends AbstractCompany
     /** @var Collection<int, SupplierParameter>
      */
     #[Assert\Valid]
+    #[UniqueObjectCollection(fields: ['name', 'group', 'element'])]
     #[ORM\OneToMany(mappedBy: 'element', targetEntity: SupplierParameter::class, cascade: ['persist', 'remove'], orphanRemoval: true)]
     #[ORM\OrderBy(['group' => Criteria::ASC, 'name' => 'ASC'])]
     #[Groups(['supplier:read', 'supplier:write'])]
     #[ApiProperty(readableLink: false, writableLink: true)]
     protected Collection $parameters;
 
+    #[Groups(['supplier:read', 'supplier:write'])]
+    protected string $comment = '';
+    
+    #[Groups(['supplier:read'])]
+    protected ?\DateTimeImmutable $addedDate = null;
+    #[Groups(['supplier:read'])]
+    protected ?\DateTimeImmutable $lastModified = null;
+
     /**
      * Gets the currency that should be used by default, when creating a orderdetail with this supplier.
      */
@@ -198,10 +234,34 @@ class Supplier extends AbstractCompany
     }
     public function __construct()
     {
-        parent::__construct();
+        $this->initializeAttachments();
+        $this->initializeStructuralElement();
         $this->children = new ArrayCollection();
         $this->orderdetails = new ArrayCollection();
         $this->attachments = new ArrayCollection();
         $this->parameters = new ArrayCollection();
     }
+
+    public function __clone()
+    {
+        if ($this->id) {
+            $this->cloneDBElement();
+            $this->cloneAttachments();
+            
+            // We create a new object, so give it a new creation date
+            $this->addedDate = null;
+            
+            //Deep clone parameters
+            $parameters = $this->parameters;
+            $this->parameters = new ArrayCollection();
+            foreach ($parameters as $parameter) {
+                $this->addParameter(clone $parameter);
+            }
+        }
+    }
+
+    public function jsonSerialize(): array
+    {
+        return ['@id' => $this->getID()];
+    }
 }