<?php

namespace ActivityPub\JsonLd\TripleStore;

/**
 * A triple represents a single fact in an RDF graph. A triple is made up a subject, a predicate, and an object.
 * The object can also have a type, e.g. "@id" for references to other resources or
 * "http://www.w3.org/2001/XMLSchema#dateTime" for date-time values.
 *
 * See https://www.w3.org/TR/rdf11-concepts/#data-model.
 *
 * Class Triple
 * @package ActivityPub\JsonLd\TripleStore
 */
class TypedRdfTriple
{
    /** @var string|null */
    private $subject;

    /** @var string|null */
    private $predicate;

    /** @var string|null */
    private $object;

    /** @var string|null */
    private $objectType;

    private function __construct($subject = null, $predicate = null, $object = null, $objectType = null)
    {
        $this->subject = $subject;
        $this->predicate = $predicate;
        $this->object = $object;
        $this->objectType = $objectType;
    }

    public static function create($subject = null, $predicate = null, $object = null, $objectType = null)
    {
        return new TypedRdfTriple( $subject, $predicate, $object, $objectType );
    }

    /**
     * @return string|null
     */
    public function getSubject()
    {
        return $this->subject;
    }

    /**
     * @param string $subject
     * @return TypedRdfTriple
     */
    public function setSubject($subject)
    {
        $this->subject = $subject;
        return $this;
    }

    /**
     * @return string|null
     */
    public function getPredicate()
    {
        return $this->predicate;
    }

    /**
     * @param string $predicate
     * @return TypedRdfTriple
     */
    public function setPredicate($predicate)
    {
        $this->predicate = $predicate;
        return $this;
    }

    /**
     * @return string|null
     */
    public function getObject()
    {
        return $this->object;
    }

    /**
     * @param string $object
     * @return TypedRdfTriple
     */
    public function setObject($object)
    {
        $this->object = $object;
        return $this;
    }

    /**
     * @return string|null
     */
    public function getObjectType()
    {
        return $this->objectType;
    }

    /**
     * @param string $objectType
     * @return TypedRdfTriple
     */
    public function setObjectType($objectType)
    {
        $this->objectType = $objectType;
        return $this;
    }

    /**
     * True if this triple has a subject, a predicate, and an object.
     * @return bool
     */
    public function isFullySpecified()
    {
        return $this->getSubject() && $this->getPredicate() && $this->getObject();
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MjcwNDM3MzI2Mjc5MzQ0MyA4MzU4Mjg3Mzk0NjE1OTAwIDI5NDU1NDQ3NTc3MjIxOTk=