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Pull Request — master (#66)
by Frank
03:02 queued 52s
created

reconstituteFromSnapshotAndEvents()   A

↳ Parent: SnapshottingBehaviour

Complexity

Conditions 3
Paths 2

Size

Total Lines 14
Code Lines 7

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 8
CRAP Score 3

Importance

Changes 2
Bugs 0 Features 0
Metric Value
cc 3
eloc 7
c 2
b 0
f 0
nc 2
nop 2
dl 0
loc 14
ccs 8
cts 8
cp 1
crap 3
rs 10
1 
<?php
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declare(strict_types=1);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace EventSauce\EventSourcing\Snapshotting;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use EventSauce\EventSourcing\AggregateRoot;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use EventSauce\EventSourcing\AggregateRootId;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Generator;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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trait SnapshottingBehaviour

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    abstract public function aggregateRootVersion(): int;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    abstract public function aggregateRootId(): AggregateRootId;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    abstract protected function apply(object $event): void;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function createSnapshot(): Snapshot

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        return new Snapshot($this->aggregateRootId(), $this->aggregateRootVersion(), $this->createSnapshotState());

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    abstract protected function createSnapshotState();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @param Snapshot  $snapshot

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @param Generator $events

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * @return static

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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     */

            


            
                                                                        
                            
            
                                    
            
            

                
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    public static function reconstituteFromSnapshotAndEvents(Snapshot $snapshot, Generator $events): AggregateRoot

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        $id = $snapshot->aggregateRootId();

            


            
                                                                        
                            
            
                                    
            
            

                
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        /** @var static&AggregateRoot $aggregateRoot */

            


            
                                                                        
                            
            
                                    
            
            

                
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        $aggregateRoot = static::reconstituteFromSnapshotState($id, $snapshot->state());

            


            
                                                                        
                            
            
                                    
            
            

                
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        $aggregateRoot->aggregateRootVersion = $snapshot->aggregateRootVersion();

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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The property aggregateRootVersion does not exist. Although not strictly required by PHP, it is generally a best practice to declare properties explicitly.
                                                                                                

                    
                                                    

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        foreach ($events as $event) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            $aggregateRoot->apply($event);

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        $aggregateRoot->aggregateRootVersion = $events->getReturn() ?: $aggregateRoot->aggregateRootVersion;

            


            
                                                                        
                            
            
                                    
            
            

                
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        return $aggregateRoot;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    abstract protected static function reconstituteFromSnapshotState(AggregateRootId $id, $state): AggregateRootWithSnapshotting;

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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