NullHandler.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\MetaData\Vocabularies\Slots;
 
use ILIAS\MetaData\Paths\PathInterface;
use ILIAS\MetaData\Vocabularies\Slots\Conditions\ConditionInterface;
use ILIAS\MetaData\Paths\NullPath;
use ILIAS\MetaData\Elements\Data\Type as DataType;
use ILIAS\MetaData\Elements\Data\Type;
 
class NullHandler implements HandlerInterface
{
    public function pathForSlot(Identifier $identifier): PathInterface
    {
        return new NullPath();
    }
 
    public function isSlotConditional(Identifier $identifier): bool
    {
        return false;
    }
 
    public function conditionForSlot(Identifier $identifier): ?ConditionInterface
    {
        return null;
    }
 
    public function identiferFromPathAndCondition(
        PathInterface $path_to_element,
        ?PathInterface $path_to_condition,
        ?string $condition_value
    ): Identifier {
        return Identifier::NULL;
    }
 
    public function allSlotsForPath(PathInterface $path_to_element): \Generator
    {
        yield from [];
    }
 
    public function doesSlotExist(
        PathInterface $path_to_element,
        ?PathInterface $path_to_condition,
        ?string $condition_value
    ): bool {
        return false;
    }
 
    public function dataTypeForSlot(Identifier $identifier): DataType
    {
        return DataType::NULL;
    }
}