wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\InternalSerialization;

use Deserializers\Deserializer;
use Deserializers\DispatchableDeserializer;
use Wikibase\DataModel\Entity\EntityIdParser;
use Wikibase\InternalSerialization\Deserializers\LegacyEntityDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacyEntityIdDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacyFingerprintDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacyItemDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacyPropertyDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacySiteLinkListDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacySnakDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacySnakListDeserializer;
use Wikibase\InternalSerialization\Deserializers\LegacyStatementDeserializer;

/**
 * Factory for constructing deserializers that implement handling for the legacy format.
 *
 * @since 1.0
 *
 * @license GPL-2.0-or-later
 * @author Jeroen De Dauw < jeroendedauw@gmail.com >
 */
class LegacyDeserializerFactory {

    /**
     * @var Deserializer
     */
    private $dataValueDeserializer;

    /**
     * @var EntityIdParser
     */
    private $idParser;

    public function __construct( Deserializer $dataValueDeserializer, EntityIdParser $idParser ) {
        $this->dataValueDeserializer = $dataValueDeserializer;
        $this->idParser = $idParser;
    }

    /**
     * @return DispatchableDeserializer
     */
    public function newEntityDeserializer() {
        return new LegacyEntityDeserializer(
            $this->newItemDeserializer(),
            $this->newPropertyDeserializer()
        );
    }

    /**
     * @return Deserializer
     */
    private function newItemDeserializer() {
        return new LegacyItemDeserializer(
            $this->newEntityIdDeserializer(),
            $this->newSiteLinkListDeserializer(),
            $this->newStatementDeserializer(),
            $this->newTermsDeserializer()
        );
    }

    /**
     * @return Deserializer
     */
    private function newPropertyDeserializer() {
        return new LegacyPropertyDeserializer(
            $this->newEntityIdDeserializer(),
            $this->newTermsDeserializer()
        );
    }

    /**
     * @return Deserializer
     */
    private function newEntityIdDeserializer() {
        return new LegacyEntityIdDeserializer( $this->idParser );
    }

    /**
     * @return Deserializer
     */
    private function newTermsDeserializer() {
        return new LegacyFingerprintDeserializer();
    }

    /**
     * @return Deserializer
     */
    private function newSiteLinkListDeserializer() {
        return new LegacySiteLinkListDeserializer();
    }

    /**
     * @deprecated since 1.4 - use newStatementDeserializer instead
     *
     * @return Deserializer
     */
    public function newClaimDeserializer() {
        return $this->newStatementDeserializer();
    }

    /**
     * @return DispatchableDeserializer
     */
    public function newStatementDeserializer() {
        return new LegacyStatementDeserializer(
            $this->newSnakDeserializer(),
            $this->newSnakListDeserializer()
        );
    }

    /**
     * @return Deserializer
     */
    public function newSnakListDeserializer() {
        return new LegacySnakListDeserializer( $this->newSnakDeserializer() );
    }

    /**
     * @return Deserializer
     */
    public function newSnakDeserializer() {
        return new LegacySnakDeserializer( $this->dataValueDeserializer );
    }

}