2017/03 版 DDDパターンを活用した Laravelアプリケーション開発/201703-ddd-with-laravel

by shin1x1

Slide 1

Slide 1 text

ɹ!shin1x1 2017//23 <൛> %%%ύλʔϯΛ׆༻ͨ͠ -BSBWFMΞϓϦέʔγϣϯ։ൃ

Slide 2

Slide 2 text

https://github.com/shin1x1/laravel-ddd-sample

Slide 3

Slide 3 text

D .BTBTIJ4IJOCBSB!TIJOY ΞδΣϯμ wର৅Ϣʔεέʔε w%%% wύλʔϯΛ׆༻࣮ͨ͠૷ w࣮૷ͷϙΠϯτ

Slide 4

Slide 4 text

ର৅γεςϜ  Ϣʔεέʔε

Slide 5

Slide 5 text

&$αΠτ ΧʔτʹೖΕΔ

Slide 6

Slide 6 text

D .BTBTIJ4IJOCBSB!TIJOY ΧʔτʹೖΕΔ"1* 1045ϦΫΤετ͔Β঎඼*%ͱ঎඼ݸ਺Λऔಘ σʔλϕʔε͔Β঎඼*%Ͱ঎඼Λऔಘ Χʔτʹ঎඼ΛೖΕΔ ΧʔτΛηογϣϯʹอଘ ϨεϙϯεΛฦ͢

Slide 7

Slide 7 text

%PNBJO %SJWFO %FTJHO

Slide 8

Slide 8 text

D .BTBTIJ4IJOCBSB!TIJOY %PNBJO%SJWFO%FTJHO wʮΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʯ wυϝΠϯʹϑΥʔΧεͨ͠ઃܭɺ։ൃख๏ wଟ͘ͷύλʔϯ͕঺հ͞Ε͍ͯΔ

Slide 9

Slide 9 text

D .BTBTIJ4IJOCBSB!TIJOY ιϑτ΢ΣΞͷυϝΠϯ wγεςϜͷର৅ྖҬɺղܾ͢Δ໰୊ྖҬ wۀ຿γεςϜͰ͋Ε͹ɺ  ର৅ͷϏδωε͕υϝΠϯ wιʔείʔυ؅ཧγεςϜͰ͋Ε͹ɺ  ιϑτ΢ΣΞ։ൃ͕υϝΠϯ wຊηογϣϯͰ͸ɺ&$αΠτ͕υϝΠϯ

Slide 10

Slide 10 text

ϢϏΩλεݴޠ D .BTBTIJ4IJOCBSB!TIJOY wυϝΠϯ༻ޠࣙॻ  ঎඼ɺΧʔτɺΧʔτʹ঎඼ΛೖΕΔɺͳͲ wϓϩδΣΫτνʔϜ಺Ͱಉ͡ݴ༿Λར༻  ։ൃऀ΋ϏδωεΤΩεύʔτ΋શһ wͦͷݴ༿ΛίʔυͰ΋ར༻  ʢ໊લۭؒɺΫϥεɺϝιου౳ʣ

Slide 11

Slide 11 text

ӳޠ ಺༰ ঎඼ *UFN ൢച͢Δ঎඼ɻԼهͷଐੑΛ࣋ͭɻ  ɾ঎඼*% ɾ঎඼໊  ɾ঎඼Ձ֨  ɾࡏݿ ঎඼*% *UFN*E ঎඼Λࣝผ͢Δίʔυ  ঎඼͝ͱʹҰҙ ঎඼໊ *UFN/BNF ঎඼ͷ໊শ ঎඼Ձ֨ *UFN1SJDF ঎඼ͷൢചՁ֨  Ҏ্ͷ੔਺ ࡏݿ *UFN4UPDL ঎඼ͷࡏݿ਺ Ҏ্ͷ੔਺

Slide 12

Slide 12 text

ӳޠ ಺༰ Χʔτ $BSU ߪೖ͢Δ঎඼ΛҰ࣌֨ೲ͢ΔೖΕ෺  ΧʔτཁૉΛෳ਺࣋ͭ Χʔτཁૉ $BSU&MFNFOU Χʔτʹ֨ೲ͞Ε͍ͯΔཁૉ  ঎඼໊ͱ঎඼ݸ਺Λଐੑʹ࣋ͭ ঎඼ݸ਺ *UFN$PVOU ঎඼ͷݸ਺ɻҎ্ͷ੔਺ɻ Χʔτʹ঎඼Λ ೖΕΔ "EE*UFN5P$BSU Χʔτʹ঎඼ΛೖΕΔ͜ͱɻ  ঎඼ͱ঎඼ݸ਺Λ༩͑Δɻ  ঎඼ݸ਺͸঎඼ࡏݿҎԼͰ͋Δඞཁ ͕͋Δɻ

Slide 13

Slide 13 text

ϨΠϠʔυΞʔΩςΫνϟ D .BTBTIJ4IJOCBSB!TIJOY wγεςϜΛϨΠϠʢ૚ʣʹ෼ׂ wϨΠϠ͸ࣗ਎ͷ໾ׂΛ୲͏ wϨΠϠؒͰڠௐͯ͠ɺॲཧΛߦ͏ wϨΠϠؒͷྲྀΕ͸Ұํ௨ߦ

Slide 14

Slide 14 text

%%%&SJD&WBOT D .BTBTIJ4IJOCBSB!TIJOY UI Application Infrastructure Domain

Slide 15

Slide 15 text

ϨΠϠؒͷྲྀΕ D .BTBTIJ4IJOCBSB!TIJOY UI Application Infrastructure Domain

Slide 16

Slide 16 text

D .BTBTIJ4IJOCBSB!TIJOY 6*-BZFS wϢʔβʢ࿈ܞγεςϜؚΉʣͱγεςϜͷ઀఺ wϢʔβ͸͜ͷϨΠϠΛ௨ͯ͡γεςϜʹ৮ΕΔ w)551 )5.- +40/ 45%*/ 45%065 wϏϡʔɺ3FRVFTUɺ3FTQPOTF

Slide 17

Slide 17 text

D .BTBTIJ4IJOCBSB!TIJOY "QQMJDBUJPO-BZFS wγεςϜͷίϯτϩʔϧΛ୲͏ϨΠϠ wϢʔεέʔεͷྲྀΕΛ࡞Γɺ۩ମతͳॲཧ͸  υϝΠϯ΍ΠϯϑϥετϥΫνϟʹҕৡ w3PVUF$POUSPMMFS6TF$BTF

Slide 18

Slide 18 text

D .BTBTIJ4IJOCBSB!TIJOY %PNBJO-BZFS wγεςϜͷυϝΠϯΛ࣮૷͢ΔϨΠϠ wυϝΠϯҎ֎ͷؔ৺ࣄ͸ؚΊͳ͍  )551%#Ωϟογϡ౳ w1010Ͱ࣮૷͠ɺϑϨʔϜϫʔΫ͔Β͸ಠཱ  1MBJO0ME1)10CKFDU wϞσϧɺαʔϏεɺΠϕϯτͳͲ

Slide 19

Slide 19 text

D .BTBTIJ4IJOCBSB!TIJOY *OGSBTUSVDUVSF-BZFS wσʔλετΞ΍ϝʔϧૹ৴ɺ֎෦"1*࿈ܞͳͲ  Ұൠతͳٕज़ػೳΛఏڙ͢ΔϨΠϠ wϦϙδτϦɺΩϟογϡɺ"1*ΫϥΠΞϯτͳͲ w&MPRVFOU2VFSZ#VJMEFS$BDIF

Slide 20

Slide 20 text

ඞཁ࠷௿ݶ͚ͩ ར༻ ͪ͜Βʹ࣮૷

Slide 21

Slide 21 text

ΠϯϑϥετϥΫνϟ ΞϓϦέʔγϣϯ υϝΠϯ

Slide 22

Slide 22 text

ύλʔϯΛ׆༻࣮ͨ͠૷

Slide 23

Slide 23 text

D .BTBTIJ4IJOCBSB!TIJOY UI Application Infrastructure Domain %PNBJO-BZFS

Slide 24

Slide 24 text

D .BTBTIJ4IJOCBSB!TIJOY ΧʔτʹೖΕΔ"1* 1045ϦΫΤετ͔Β঎඼*%ͱ঎඼ݸ਺Λऔಘ σʔλϕʔε͔Β঎඼*%Ͱ঎඼Λऔಘ Χʔτʹ঎඼ΛೖΕΔ ΧʔτΛηογϣϯʹอଘ ϨεϙϯεΛฦ͢

Slide 25

Slide 25 text

D .BTBTIJ4IJOCBSB!TIJOY ΤϯςΟςΟ wυϝΠϯϞσϧͷ࣮૷  ঎඼ɺΧʔτ w&MPRVFOUΛܧঝ͠ͳ͍ wಉҰੑ͸ࣝผࢠʢJEʣͰ൑ผ wϛϡʔλϒϧ

Slide 26

Slide 26 text

D .BTBTIJ4IJOCBSB!TIJOY ঎඼ΤϯςΟςΟ ঎඼ΤϯςΟςΟ͸ҎԼͷଐੑΛ࣋ͭ ଐੑ ಺༰ ৼΔ෣͍ʢԋࢉʣ ঎඼*% ঎඼ͷࣝผࢠ ঎඼͝ͱʹҰҙ ͳ͠ ঎඼໊ ঎඼ͷ໊শ ͳ͠ ঎඼Ձ֨ ঎඼ͷՁ֨ Ҏ্ͷ੔਺ ɾ঎඼ݸ਺ͱͷֻ͚ࢉ ࡏݿ ঎඼ͷࡏݿ਺ Ҏ্ͷ੔਺ ɾࡏݿ͕ෆ଍͍ͯ͠Δ͔

Slide 27

Slide 27 text

&MPRVFOU 3FQPTJUPSZ class Item  {  /** @var int */  private $id;    /** @var string */  private $name;    /** @var int */  private $price;    /** @var int */  private $stock;  }  int int int *UFNʢ঎඼ʣ

Slide 28

Slide 28 text

&MPRVFOU 3FQPTJUPSZ class Item  {  /** @var int */  private $id;    /** @var string */  private $name;    /** @var int */  private $price;    /** @var int */  private $stock;  }  int int int *UFNʢ঎඼ʣ wଐੑͷ಺༰͕൓ө͞Ε͍ͯͳ͍ wUIJTQSJDF  ૝ఆ֎ͷ࢖͍ํʢ஋Ҿ͖༻঎඼ʣ wUIJTTUPDLUIJTTUPDL  ͋Γ͑ͳ͍ԋࢉ

Slide 29

Slide 29 text

D .BTBTIJ4IJOCBSB!TIJOY 7BMVF0CKFDU wՁ֨΍೔෇ͳͲϓϦϛςΟϒͳ஋Λࣔ͢  ঎඼*%ɺ঎඼Ձ֨ɺࡏݿ wಉҰੑ͸ଐੑͰ൑ผ w஋ʹର͢Δ੍໿΍ৼΔ෣͍ʢԋࢉʣΛ࣮૷ wΠϛϡʔλϒϧ

Slide 30

Slide 30 text

&MPRVFOU 3FQPTJUPSZ class Item  {  /** @var ItemId */  private $id;    /** @var string */  private $name;    /** @var ItemPrice */  private $price;    /** @var Stock */  private $stock;  }  ItemId ItemPrice Stock ܕʢΫϥεʣͰදݱ

Slide 31

Slide 31 text

&MPRVFOU 3FQPTJUPSZ class ItemId  {  /** @var int */  private $value;    /**  * @param int $value  */  public function __construct(int $value)  {  $this->value = $value;  }    public function value(): int  {  return $this->value;  }  } *UFN*E ৼΔ෣͍ʢԋࢉʣ͕ແ͍

Slide 32

Slide 32 text

&MPRVFOU 3FQPTJUPSZ class ItemPrice  {  /** @var int */  private $value;      public function __construct(int $value = 0)  {  if ($value < 0) {  throw new InvariantException('value must be positive number:' . $value);  }  $this->value = $value;  }  //(snip)    *UFN1SJDF ঎඼Ձ֨͸Ҏ্ͷ੔਺

Slide 33

Slide 33 text

&MPRVFOU 3FQPTJUPSZ   public function calcSubtotal(ItemCount $count): ItemSubtotal  {  return new ItemSubtotal($this->value * $count->value());  }  *UFN1SJDF ঎඼Ձ֨঎඼ݸ਺঎඼খܭ

Slide 34

Slide 34 text

D .BTBTIJ4IJOCBSB!TIJOY 7BMVF0CKFDUͷϙΠϯτ wϢϏΩλεݴޠΛίʔυͰදݱ  ίʔυΛݟΕ͹࢓༷͕෼͔Δ wϝιουͰఆٛͨ͠ԋࢉ͔͠Ͱ͖ͳ͍  ؒҧ͍ΛݮΒͤΔ w൚༻ܕͰ͸ͳ͘ಛԽܕͰ  ʮ਺ࣈʯͰ͸ͳ͘ʮ঎඼Ձ֨ʯ wڽू౓্͕͕Γɺѻ͍΍͍͢ɻςετ͕༰қʹɻ

Slide 35

Slide 35 text

&MPRVFOU 3FQPTJUPSZ class Cart  {  /** @var CartElement[]|Collection */  private $elements;    public function addItem(Item $item, ItemCount $count)  {  if (!$item->isSufficient($count)) {  throw new InvariantException('stock is insufficient');  }    $this->elements->push(new CartElement($item, $count));  }  $BSU ࡏݿ͕଍Γͳ͚Ε͹ྫ֎

Slide 36

Slide 36 text

&MPRVFOU 3FQPTJUPSZ class Cart  {  /** @var CartElement[]|Collection */  private $elements;    public function addItem(Item $item, ItemCount $count)  {  if (!$item->isSufficient($count)) {  throw new PreconditionsException('stock is insufficient');  }    $this->elements->push(new CartElement($item, $count));  }  $BSU ΧʔτཁૉΛ௥Ճ

Slide 37

Slide 37 text

D .BTBTIJ4IJOCBSB!TIJOY υϝΠϯϨΠϠͷ࣮૷ wϑϨʔϜϫʔΫ͔Βಠཱͯ͠1010Ͱ࣮૷  $PMMFDUJPOͳͲυϝΠϯΛදݱ͢Δ΋ͷ͸PL wଞϨΠϠʹ͸ґଘ͠ͳ͍ w7BMVF0CKFDUͰυϝΠϯಛԽܕΛ࡞Γɺ  ϢϏΩλεݴޠΛදݱ wυϝΠϯϨΠϠͰ͸70Λ࠷খཻ౓ʹ͢Δ  70಺Ҏ֎Ͱ͸εΧϥʔܕ͸࢖Θͳ͍ʢཧ૝ʣ

Slide 38

Slide 38 text

D .BTBTIJ4IJOCBSB!TIJOY UI Application Infrastructure Domain *OGSBTUSVDUVSF-BZFS

Slide 39

Slide 39 text

D .BTBTIJ4IJOCBSB!TIJOY ΧʔτʹೖΕΔ"1* 1045ϦΫΤετ͔Β঎඼*%ͱ঎඼ݸ਺Λऔಘ σʔλϕʔε͔Β঎඼*%Ͱ঎඼Λऔಘ Χʔτʹ঎඼ΛೖΕΔ ΧʔτΛηογϣϯʹอଘ ϨεϙϯεΛฦ͢

Slide 40

Slide 40 text

D .BTBTIJ4IJOCBSB!TIJOY ϦϙδτϦ wϞσϧͱσʔλετΞͷؒʹհࡏ͠ɺ෼཭ wσʔλετΞ͔ΒͷϞσϧͷऔಘɺอଘϝιου  ΛΠϯλʔϑΣΠεͰఆٛ wσʔλετΞʹԠͯ͡ɺΠϯλʔϑΣΠεΛ࣮૷  σʔλϕʔεɺ,74ɺϝϞϦͳͲ

Slide 41

Slide 41 text

D .BTBTIJ4IJOCBSB!TIJOY ϦϙδτϦΠϯλʔϑΣʔε wσʔλετΞʢ3%#.4౳ʣ͔Βɹ  *UFNϞσϧͷೖग़ྗΛ୲͏ wυϝΠϯϨΠϠʹΠϯλʔϑΣʔεͱͯ͠ఆٛ

Slide 42

Slide 42 text

$POUSPMMFS %BUB5SBOTGFS0CKFDU υϝΠϯϨΠϠ ϦϙδτϦ ΠϯλʔϑΣΠε

Slide 43

Slide 43 text

&MPRVFOU 3FQPTJUPSZ interface ItemRepository  {  public function findById(ItemId $id): Item;  } *UFN3FQPTJUPSZ

Slide 44

Slide 44 text

D .BTBTIJ4IJOCBSB!TIJOY ϦϙδτϦͷ࣮૷ wσʔλϕʔεJUFNςʔϒϧͱͷೖग़ྗ w&MPRVFOUͰσʔλϕʔεૢ࡞Λߦ͏ w*UFN3FQPTJUPSZΛ࣮૷

Slide 45

Slide 45 text

No content

Slide 46

Slide 46 text

ΠϯϑϥετϥΫνϟ $POUSPMMFS %BUB5SBOTGFS0CKFDU 3FQPTJUPSZ*OUFSGBDF 'PSN3FRVFTU "QQMJDBUJPO4FSWJDF ΠϯϑϥετϥΫνϟϨΠϠ ϦϙδτϦ &MPRVFOU

Slide 47

Slide 47 text

&MPRVFOU 3FQPTJUPSZ class EloquentItemRepository implements ItemRepository  {  private $eloquent;    public function __construct(EloquentItem $eloquent)  {  $this->eloquent = $eloquent;  }    public function findById(ItemId $id): Item  {  $item = $this->eloquent->find($id->value());  if (empty($item)) {  throw new NotFoundException('item not found');  }    return $item->toDomain();  }  } &MPRVFOU*UFN3FQPTJUPSZ

Slide 48

Slide 48 text

Slide 49

Slide 49 text

&MPRVFOU 3FQPTJUPSZ class EloquentItem extends AppEloquent implements Domainable  {  protected $table = 'items';    public function toDomain(): Item  {  return new Item(  new ItemId($this->id),  $this->name,  new ItemPrice($this->price),  new Stock($this->stock)  );  }  } &MPRVFOU*UFN

Slide 50

Slide 50 text

&MPRVFOU 3FQPTJUPSZ class RepositoryServiceProvider extends ServiceProvider  {  public function register()  {  $this->app->bind(ItemRepository::class, EloquentItemRepository::class);  }  } ϦϙδτϦΛαʔϏείϯςφ΁όΠϯυ

Slide 51

Slide 51 text

&MPRVFOU 3FQPTJUPSZ class AddItemToCart  {  private $itemRepo;    public function __construct(ItemRepository $itemRepo)  {  $this->itemRepo = $itemRepo;  }    public function __invoke(int $itemId, int $count): Cart  {  $item = $this->itemRepo->findById(new ItemId($itemId));  // (snip)  }  }  ར༻ίʔυ

Slide 52

Slide 52 text

D .BTBTIJ4IJOCBSB!TIJOY &MPRVFOU w&MPRVFOUʹυϝΠϯϩδοΫ͸࣮૷͠ͳ͍ w&MPRVFOUΛ1FSTJTUFODF.PEFMʹ࢖͏ wυϝΠϯϨΠϠͰ&MPRVFOU͸࢖Θͳ͍

Slide 53

Slide 53 text

&MPRVFOU 3FQPTJUPSZ public function find(): Cart  {  $cart = $this->session->get(static::SESSION_KEY);  if (empty($cart)) {  throw new NotFoundException('cart not found');  }    return $cart;  }    public function store(Cart $cart)  {  $this->session->put(static::SESSION_KEY, $cart);  }  )UUQ4FTTJPO$BSU3FQPTJUPSZ ηογϣϯ͔Βͷೖग़ྗ

Slide 54

Slide 54 text

D .BTBTIJ4IJOCBSB!TIJOY ϦϙδτϦͷϝϦοτ wυϝΠϯϨΠϠ͔ΒσʔλετΞ΁ͷ࣮૷Λഉআ  υϝΠϯϨΠϠ͸ΠϯλʔϑΣΠεͷϝιουΛݺͿ͚ͩ  Ͳ͜ʹετΞ͞ΕΔ͔͸υϝΠϯϨΠϠ͸஌Βͳ͍ wσʔλετΞ΍ΞΫηεखஈͷ੾ସ͕༰қ  ຊ൪͸1PTUHSF42-ςετ͸ϝϞϦ wσʔλετΞ΁ͷඞཁͳૢ࡞Λ໌ࣔ  7BMVF0CKFDUͱಉ༷

Slide 55

Slide 55 text

D .BTBTIJ4IJOCBSB!TIJOY UI Application Infrastructure Domain "QQMJDBUJPO-BZFS

Slide 56

Slide 56 text

D .BTBTIJ4IJOCBSB!TIJOY ΧʔτʹೖΕΔ"1* 1045ϦΫΤετ͔Β঎඼*%ͱ঎඼ݸ਺Λऔಘ σʔλϕʔε͔Β঎඼*%Ͱ঎඼Λऔಘ Χʔτʹ঎඼ΛೖΕΔ ΧʔτΛηογϣϯʹอଘ ϨεϙϯεΛฦ͢

Slide 57

Slide 57 text

&MPRVFOU 3FQPTJUPSZ public function post(Request $request, AddItemToCart $useCase): JsonResponse  {  $this->validate($request, [  'item_id' => 'required|integer',  'count' => 'required|integer'  ]);    $cart = $useCase(  $request->get('item_id'),  $request->get('count')  );  return response()->json(['cart' => $this->cartToArray($cart)]); } $POUSPMMFS ͬ͘͟ΓόϦσʔγϣϯ  ʢυϝΠϯϧʔϧ͸υϝΠϯϨΠϠͰʣ

Slide 58

Slide 58 text

&MPRVFOU 3FQPTJUPSZ $POUSPMMFS public function post(Request $request, AddItemToCart $useCase): JsonResponse  {  $this->validate($request, [  'item_id' => 'required|integer',  'count' => 'required|integer'  ]);    $cart = $useCase(  $request->get('item_id'),  $request->get('count')  );  return response()->json(['cart' => $this->cartToArray($cart)]); } ϢʔεέʔεΛ࣮ߦ

Slide 59

Slide 59 text

&MPRVFOU 3FQPTJUPSZ public function _invoke(int $itemId, int $count): Cart  {  $item = $this->itemRepo->findById(new ItemId($itemId));    try {  $cart = $this->cartRepo->find();  } catch (NotFoundException $e) {  $cart = new Cart();  }    $cart->addItem($item, new ItemCount($count));  $this->cartRepo->store($cart);    return $cart;  }  6TF$BTF

Slide 60

Slide 60 text

࣮૷ͷϙΠϯτ

Slide 61

Slide 61 text

D .BTBTIJ4IJOCBSB!TIJOY ෼ׂ͢Δ wΞϓϦέʔγϣϯͱϑϨʔϜϫʔΫͷ෼཭ wυϝΠϯϨΠϠͱͦΕҎ֎ͷ෼཭ wϞσϧͷଐੑΛ7BMVF0CKFDU΁෼཭

Slide 62

Slide 62 text

D .BTBTIJ4IJOCBSB!TIJOY ಛԽ͢Δ wυϝΠϯʹಛԽɺίϯςΩετʹಛԽ  ڥք෇͚ΒΕͨίϯςΩετ wυϝΠϯ΍ίϯςΩετΛ௒͑ͨ  ൚༻Λ໨ࢦ͠ա͗ͳ͍ wίϯςΩετ಺Ͱͷ൚༻͸PL

Slide 63

Slide 63 text

D .BTBTIJ4IJOCBSB!TIJOY ओैΛ͓͑͞Δ wΞϓϦέʔγϣϯ͕ओɺϑϨʔϜϫʔΫ͸ै wυϝΠϯϨΠϠ͕ओɺΞϓϦέʔγϣϯ͸ै

Slide 64

Slide 64 text

D .BTBTIJ4IJOCBSB!TIJOY ͍͞͝ʹ ࡏݿͬͯɺ঎඼͕ѻ͏΂͖ͳͷ͔ͳʁ

Slide 65

Slide 65 text

D .BTBTIJ4IJOCBSB!TIJOY ͍͞͝ʹ ࡏݿνΣοΫ͸ɺΧʔτͷதͰ΍Δ͜ͱʁ

Slide 66

Slide 66 text

D .BTBTIJ4IJOCBSB!TIJOY ͍͞͝ʹ υϝΠϯʹண໨͢Δͱ ͜Μͳٙ໰͕૿͖͑ͯ·͢ɻ ͦͷࢹ఺Λ࣋ͭ͜ͱ͕υϝΠϯΛΑΓཧղ͠ɺ ΞϓϦέʔγϣϯʹ൓ө͢ΔୈҰาͰ͢ɻ

Slide 67

Slide 67 text

D .BTBTIJ4IJOCBSB!TIJOY !TIJOY !TIJOY D .BTBTIJ4IJOCBSB!TIJOY