wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Repo\Merge;

use InvalidArgumentException;
use MediaWiki\Site\SiteLookup;
use Wikibase\DataModel\Entity\Item;
use Wikibase\Repo\ChangeOp\ChangeOpFactoryProvider;
use Wikibase\Repo\ChangeOp\ChangeOpsMerge;
use Wikibase\Repo\Validators\EntityConstraintProvider;

/**
 * Factory for merging services
 *
 * @license GPL-2.0-or-later
 * @author Daniel Kinzler
 */
class MergeFactory {

    /**
     * @var EntityConstraintProvider
     */
    private $constraintProvider;

    /**
     * @var ChangeOpFactoryProvider
     */
    private $factoryProvider;

    /**
     * @var SiteLookup
     */
    private $siteLookup;

    public function __construct(
        EntityConstraintProvider $constraintProvider,
        ChangeOpFactoryProvider $factoryProvider,
        SiteLookup $siteLookup
    ) {
        $this->constraintProvider = $constraintProvider;
        $this->factoryProvider = $factoryProvider;
        $this->siteLookup = $siteLookup;
    }

    /**
     * @param Item $fromItem
     * @param Item $toItem
     * @param string[] $ignoreConflicts list of elements to ignore conflicts for
     *   can only contain 'label' and or 'description' and or 'sitelink'
     *
     * @throws InvalidArgumentException
     * @return ChangeOpsMerge
     *
     * @todo Injecting ChangeOpFactoryProvider is an Abomination Unto Nuggan, we'll
     *        need a ItemMergeChangeOpsSequenceBuilder or some such.
     */
    public function newMergeOps(
        Item $fromItem,
        Item $toItem,
        array $ignoreConflicts = []
    ) {
        return new ChangeOpsMerge(
            $fromItem,
            $toItem,
            $ignoreConflicts,
            $this->constraintProvider,
            $this->factoryProvider,
            $this->siteLookup,
            $this->getStatementsMerger()
        );
    }

    public function getStatementsMerger() {
        return new StatementsMerger( $this->factoryProvider->getStatementChangeOpFactory() );
    }

}