例外処理、表明プログラミング、契約による設計 - PHP7で堅牢なコードを書く (2016年 公開時オリジナル資料) / PHP Conference 2016 Original

PHP Conference 2016 資料公開時のオリジナル資料です

Transcript

1. 1)1
   Ͱݎ࿚ͳίʔυΛॻ͘
   ྫ֎ॲཧɺද໌ϓϩάϥϛϯάɺܖ໿ʹΑΔઃܭ ࿨ా
   ୎ਓ
   !U@XBEB
   /PW
   
   
   !
   1)1ΧϯϑΝϨϯε #phpcon2016_1
2. ࿨ా
   ୎ਓ
   JE
   UXBEB
   !U@XBEB
   HJUIVC
   UXBEB
3. ひとり歩きするスタンド ஫
   Ͱ΋ࠓ೔͸ςετͷ࿩͸͠·ͤΜ
4. class BugRepository { public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } } print_r(BugRepository::findAll([ 'assignedTo' => '12', 'status' => 'OPEN' ])); ஫
   ʰ42-ΞϯνύλʔϯʱͷͻͲ͍ ίʔυྫΛΞϨϯδͯ͠ॻ͍͍ͯ·͢ ɹͱ͋Δͱ͜Ζʹɺ͜Μͳίʔυ͕͋Γ·ͨ͠ # " %
5. $ php example.php Array ( [0] => Bug Object ( [bug_id] => 842 [summary] => 保存処理でクラッシュする [date_reported] => 2016-10-26 ) [1] => Bug Object ( [bug_id] => 5150 [summary] => XMLのサポート [date_reported] => 2016-10-26 ) [2] => Bug Object ( [bug_id] => 6060 [summary] => パフォーマンスの向上 [date_reported] => 2016-10-26 ) ) ɹॲཧ͕੒ޭ͢Δͱɺ͜Μͳײ͡ɻ
6. ಥવͰ͕͢
   ͜͜Ͱ
   ΫΠζͰ͢
7. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ⏰
   ੍ݶ࣌ؒඵ ɹॲཧࣦഊͷݪҼʹͳΔՄೳੑ͕͋Δͷ͸Ͳͷߦ # " %
8. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } # " %
   σʔλϕʔε઀ଓཱࣦ֬ഊ
   
   AVTSA
   AQBTTXEA
   ౳Ωʔ໊͕มߋ͞Εͨ
9. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } # " %
   ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
   
   ͜͜Ͱ
   σʔλϕʔε઀ଓΤϥʔ Fatal error: Call to a member function execute() on a non-object
10. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } # " %
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    ͜͜Ͱ
    σʔλϕʔε઀ଓΤϥʔ
11. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } # " %
    #VH
    Ϋϥε͕ະఆٛ
    
    ͜͜Ͱ
    σʔλϕʔε઀ଓΤϥʔ ˞
    ઃఆʹΑΔ
12. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ɹॲཧࣦഊͷݪҼʹͳΔՄೳੑ͕͋Δͷ͸Ͳͷߦ # " % ᶃ ᶄ ᶅ ᶆ ͑ͬɺ͜Μͳʹ͋Δͷ
    
13. ɹ͜ͷͳ͔Ͱ΋ಛʹखڧ͍ঢ়گ͸ͲΕ
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ
14. ɹࢲݟͰ͸
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); }
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    # " %
15. $ php example.php PHP Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number: parameter was not defined in example.php Array ( ) ɹΩʔ໊΍਺Λؒҧ࣮͑ͯߦ͢ΔͱͲ͏ͳΔ ཪͰͬͦ͜Γܯࠂ͕ग़Δ͚ͩͳͷ
    
    ۭ഑ྻ͕ฦͬͯ͘Δͷ
    
    ਖ਼ৗܥͱݟ෼͚͕͔ͭͳ͘ͳ͍
    
16. ෆ۩߹ͷൃݟ͕
    ஗ΕΕ͹஗ΕΔ΄Ͳ
    ই͸ਂ͘ͳΔ IUUQTXXXBTURCPSHQSFTTSPPN*452#@$FSUJpDBUJPO@/FXT@@IUNM
17. public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ɹॲཧࣦഊͷݪҼʹͳΔՄೳੑ͕͋Δͷ͸Ͳͷߦ # " % ᶃ ᶄ ᶅ ᶆ ݱ࣮ੈք΁Α͏ͦ͜
18. lݡ໌ͳιϑτ΢ΣΞٕज़ऀʹ ͳΔͨΊͷୈҰา͸ɺಈ͘ϓϩ άϥϜΛॻ͘͜ͱͱਖ਼͍͠ϓϩ άϥϜΛద੾ʹ࡞੒͢Δ͜ͱͷ ҧ͍Λೝࣝ͢Δ͜ͱz Š
    ."+BDLTPO
    
19. ɹݎ࿚ͳίʔυ͸
    
    Ҏ্͕ΤϥʔϋϯυϦϯά
20. Agenda ୈ෦
    ༧๷తϓϩάϥϛϯά
    ୈ෦
    ߈ܸతϓϩάϥϛϯά
    ୈ෦
    ܖ໿ϓϩάϥϛϯά
21. ɹࣦഊͷݪҼʹ͍ͭͯߟ͑࢝ΊΑ͏ ❔
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    ❔
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    ❔
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    ❔
    QBSBNT
    ͕
    OVMM
    ❔
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    ❔
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    ❔
    #VH
    Ϋϥε͕ະఆٛ
    ❔
    ్தͰσʔλϕʔε઀ଓΤϥʔ
22. 
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹࣦഊͷݪҼʹ͍ͭͯߟ͑࢝ΊΑ͏
23. 
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹؒҧͬͨ࢖ΘΕํΛ͞Ε΍͍͢ɺͱ͍͏໰୊͕͋Γͦ͏
24. ରॲ
    
    
    
    ༧๷
    ༧๷తϓϩάϥϛϯά
25. w ʮ๷ޚతϓϩάϥϛϯάʯͱ͸ɺϓϩάϥϛϯάʹ ରͯ͠๷ޚతʹͳΔ͜ͱɺͭ·Γʮͦ͏ͳΔ͸ͣ ͩʯͱܾΊ͚ͭͳ͍͜ͱ
    w ๷ޚతϓϩάϥϛϯάͷࠜఈʹ͋Δͷ͸ɺϧʔνϯ ʹෆਖ਼ͳσʔλ͕౉͞Εͨͱ͖ʹɺͦΕ͕ଞͷϧʔ νϯͷ͍ͤͰ͋ͬͨͱͯ͠΋ɺඃ֐Λड͚ͳ͍Α͏ ʹ͢Δ͜ͱ
    w ͜ͷͨΊɺ
    w ֎෦ιʔε͔Βͷσʔλͷ஋Λ͢΂ͯ֬ೝ͢Δ
    w ϧʔνϯͷ͢΂ͯͷೖྗҾ਺ͷ஋Λ֬ೝ͢Δ
    w ෆਖ਼ͳೖྗΛॲཧ͢Δํ๏Λܾఆ͢Δ ๷ޚతϓϩάϥϛϯά
26. ڱٛͷ ๷ޚతϓϩά ϥϛϯά΁ͷޡղ
27. public static function findAll($params) { if (is_null($params)) { throw new InvalidArgumentException('params should not be null'); } if (!is_array($params)) { throw new InvalidArgumentException('params should be an array'); } if (count($params) !== 2) { throw new InvalidArgumentException('params should be have exact two items'); } if (!array_key_exists('assignedTo', $params) || !array_key_exists('status', $params)) { throw new InvalidArgumentException('params should have key `assignedTo` and `status` only'); } if (!is_int($params['assignedTo'])) { throw new InvalidArgumentException('params[`assignedTo`] should be an integer'); } if (!is_string($params['status'])) { throw new InvalidArgumentException('params[`status`] should be a string'); } if (!in_array($params['status'], ['OPEN', 'NEW', 'FIXED'], true)) { throw new InvalidArgumentException('params[`status`] should be in `OPEN`,`NEW`,`FIXED`'); } global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); ɹͨͩͻͨ͢ΒೖྗΛνΣοΫ͠Α͏ͱͨ͠Γ # " %
28. global $CONF; $dsn = $CONF['dsn'] ?? $CONF['ds'] ?? $CONF['dataSource']; $user = $CONF['usr'] ?? $CONF['user']; $password = $CONF['passwd'] ?? $CONF['password']; $pdo = new PDO($dsn, $user, $password, [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $safeParams = [ 'assignedTo' => $params['assignedTo'] ?? $params['assigned_to'], 'status' => $params['status'] ?? 'OPEN', ]; $stmt->execute($safeParams); $className = class_exists('Bug') ? 'Bug' : 'BugModel'; return $stmt->fetchAll(PDO::FETCH_CLASS, $className); ɹෆਖ਼ͳೖྗ͕͋ͬͯ΋ࣗ෼ͰͳΜͱ͔͠Α͏ͱͨ͠Γ # " %
29. /** * 担当者, ステータスに合致する Bug を検索し、ヒットした全件を Bug オブジェクト の配列として返す。 * * @param array $params 格納した検索条件の連想配列。キー `assignedTo` にユーザID をintで, キー `status` にステータス文字列をstringで指定すること。キー、値それぞ れNULLは不可とする。 * @return Bug[] 検索結果を Bug オブジェクトにマッピングして返す。検索結果が0件 のときは空配列を返す。 */ public static function findAll($params) { global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); ɹυΩϡϝϯτͰؒҧ͍΍͢͞Λิ͓͏ͱͨ͠Γ # " %
30. ๷ޚతϓϩάϥϛϯάͱ͸ ѱ͍ίʔυʹឺ૑ߣΛ͋ͯ Δ͜ͱͰ͸ͳ͍
31. w ʮ๷ޚతϓϩάϥϛϯάʯͱ͸ɺ໰୊ൃੜΛ ࣄલʹ๷͝͏ͱ͍͏ίʔσΟϯάελΠϧ
    w Մಡੑͷߴ͍ίʔυͱద੾ͳ໋໊نଇ
    w શͯͷؔ਺ͷ໭Γ஋ΛνΣοΫ
    w σβΠϯύλʔϯͷ࠾༻
    w ཁ͢Δʹɺྑࣝ͋Δ࣮ફͷੵΈॏͶͰ͋Δ
    w ๷ޚతϓϩάϥϛϯά͸ɺਖ਼͍͠ίʔυ࡞੒ ͷͨΊͷن཯ΛϓϩάϥϚ͕Ұ؏ͯ͠ద༻͢ ΔͨΊͷҰछͷίʔσΟϯάඪ४ ๷ޚతϓϩάϥϛϯά
32. wྑ͍ΠϯλϑΣʔεͱ͸࣍ͷͭͷ ৚݅Λຬͨ͢ΠϯλϑΣʔε
    wਖ਼͘͠࢖༻͢Δํ͕ૢ࡞ϛεΛ ͢ΔΑΓ؆୯
    wޡͬͨ࢖͍ํΛ͢Δ͜ͱ͕ࠔ೉ ͖ͷ͜
    ਖ਼͍͠࢖͍ํΛ؆୯ʹɺ ޡͬͨ࢖͍ํΛࠔ೉ʹ
33. ܕͷ੍ݶ
    
    ܕએݴ
34. lʮग़དྷͯ͸ͳΒ͵͜ͱΛې͡Δʯͷ Ͱ͸ͳ͘ɺ͸͡Ί͔Βʮग़དྷ͍͍ͯ͜ ͱ͚ͩΛग़དྷΔΑ͏ʹ͢Δʯͱߟ͑Δ ͷͰ͢z ͖ͷ͜+
    
    ݟ஌Β͵ਓͱ΋͏·͘΍Δʹ͸
35. public static function findAll(int $assignedTo, string $status) { if (is_null($params)) { throw new InvalidArgumentException('params should not be null'); } if (!is_array($params)) { throw new InvalidArgumentException('params should be an array'); } if (count($params) !== 2) { throw new InvalidArgumentException('params should be have exact two items'); } if (!array_key_exists('assignedTo', $params) || !array_key_exists('status', $params)) { throw new InvalidArgumentException('params should have key `assignedTo` and `status` only'); } if (!is_int($params['assignedTo'])) { throw new InvalidArgumentException('params[`assignedTo`] should be an integer'); } if (!is_string($params['status'])) { throw new InvalidArgumentException('params[`status`] should be a string'); } if (!in_array($params['status'], ['OPEN', 'NEW', 'FIXED'], true)) { throw new InvalidArgumentException('params[`status`] should be in `OPEN`,`NEW`,`FIXED`'); } ɹܕએݴʹΑͬͯʮग़དྷ͍͍ͯ͜ͱ͚ͩΛग़དྷΔʯΑ͏ʹ 1 ) 1 
36. public static function findAll(int $assignedTo, string $status) { if (!in_array($status, ['OPEN', 'NEW', 'FIXED'], true)) { throw new InvalidArgumentException('params[`status`] should be in `OPEN`,`NEW`,`FIXED`'); } global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT); $stmt->bindValue(':status', $status, PDO::PARAM_STR); $stmt->execute(); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ɹ૝ఆ͠ͳ͚Ε͹ͳΒͳ͍ঢ়گ͕ݮͬͨ 1 ) 1  注: さらに堅くしたい場合は 呼び出し側ファイルで厳密な型チェックを有効にする declare(strict_types=1);
37. ஋ͷ੍ݶ
    
    &OVN
38. ͖ͷ͜
    
    ؔ਺ͷʮαΠζʯΛখ͘͢͞Δ wݴޠ૊ΈࠐΈͷܕ JOU
    TUSJOH
    ౳ Λ ࢖͏ͱɺऔΓಘΔ஋ͷ૊Έ߹Θ͕ͤ ๲େʹͳΔ
    w໰୊ྖҬͷ஌ࣝΛ׆༻ͯ͠ݻ༗ͷܕ Λ࡞Δ͜ͱͰɺऔΓಘΔ૊Έ߹Θͤ Λେ෯ʹݮΒͤΔ
39. IUUQRJJUBDPN)JSBLVJUFNTFCEDBBGF
40. abstract class Enum { private $scalar; public function __construct($value) { $ref = new ReflectionObject($this); $constants = $ref->getConstants(); if (!in_array($value, $constants, true)) { throw new InvalidArgumentException("value [{$value}] is not defined"); } $this->scalar = $value; } final public function value() { return $this->scalar; } final public function __toString() { return (string)$this->scalar; } } ɹ)JSBLV
    ͞Μͷ
    &OVN
    ࣮૷Λ
    গ͠ΞϨϯδͯ͠
    ࢖ͬͯΈΔ
41. final class Status extends Enum { const OPEN = 'OPEN'; const NEW = 'NEW'; const FIXED = 'FIXED'; } $status = new Status(Status::OPEN); $status = new Status('OPEN'); // "InvalidArgumentException: value [HOGE] is not defined" $status = new Status('HOGE'); ɹ͋Β͔͡Ίఆٛ͞Εͨ஋͚ͩΛΠϯελϯεԽͰ͖Δ
42. public static function findAll(int $assignedTo, Status $status) { if (!in_array($status, ['OPEN', 'NEW', 'FIXED'], true)) { throw new InvalidArgumentException('params[`status`] should be in `OPEN`,`NEW`,`FIXED`'); } global $CONF; $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT); $stmt->bindValue(':status', $status->value(), PDO::PARAM_STR); $stmt->execute(); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ɹ૝ఆ͠ͳ͚Ε͹ͳΒͳ͍ঢ়گ͕͞Βʹݮͬͨ
43. 
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹޡΓ΍͍͢ΠϯλʔϑΣΠεʹىҼ͢ΔॲཧࣦഊΛ๾໓ ✔ ✔ ✔
44. 
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹ࣍ͷ૬ख͸ɺ஌Γ͗͢ɺ੹຿ͷଟ͗͢ʹىҼ͢Δॲཧࣦഊ
45. ஌Γ͗͢ͳ͍
    ΍Γ͗͢ͳ͍
    ੹຿ͷ࠶഑ஔ
46. class BugRepository { private $pdo; public function __construct(PDO $pdo) { $this->pdo = $pdo; } // 以下省略 } // 設定者 (DI コンテナ等) $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false, ]); $repo = new BugRepository($pdo); // 利用者 print_r($repo->findAll(12, new Status(Status::OPEN))); ɹ1%0
    ੜ੒ͱઃఆͷ੹຿Λ֎෦ʹग़͠ɺίϯετϥΫλͰड͚औΔ
47. 
    σʔλϕʔε઀ଓཱࣦ֬ഊ
    
    AVTSA
    AQBTTXEA
    ౳Ωʔ໊͕มߋ͞Εͨ
    
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    QBSBNT
    ͕
    OVMM
    
    QBSBNT
    ͷΩʔ໊΍਺ͷෆҰக
    
    QBSBNT
    ͷ஋͕จࣈྻʹม׵ෆೳ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹ஌Γ͗͢ɺ੹຿ͷଟ͗͢ʹىҼ͢ΔॲཧࣦഊΛ๾໓ ✔ ✔
48. public static function findAll($params) { if (is_null($params)) { throw new InvalidArgumentException('params should not be null'); } if (!is_array($params)) { throw new InvalidArgumentException('params should be an array'); } if (count($params) !== 2) { throw new InvalidArgumentException('params should be have exact two items'); } if (!array_key_exists('assignedTo', $params) || !array_key_exists('status', $params)) { throw new InvalidArgumentException('params should have key `assignedTo` and `status` only'); } if (!is_int($params['assignedTo'])) { throw new InvalidArgumentException('params[`assignedTo`] should be an integer'); } if (!is_string($params['status'])) { throw new InvalidArgumentException('params[`status`] should be a string'); } if (!in_array($params['status'], ['OPEN', 'NEW', 'FIXED'], true)) { throw new InvalidArgumentException('params[`status`] should be in `OPEN`,`NEW`,`FIXED`'); } global $CONF; if (!isset($CONF['dsn'])) { throw new LogicException('config key `dsn` not found'); } if (!isset($CONF['usr'])) { throw new LogicException('config key `usr` not found'); } if (!isset($CONF['passwd'])) { throw new LogicException('config key `passwd` not found'); } $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); if (!class_exists('Bug')) { throw new LogicException('class `Bug` does not exist'); } return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } public function __construct(PDO $pdo) { $this->pdo = $pdo; } public function findAll(int $assignedTo, Status $status) { $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $this->pdo->prepare($sql); $stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT); $stmt->bindValue(':status', $status->value(), PDO::PARAM_STR); $stmt->execute(); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ୈ෦·ͱΊ
    ༧๷ʹউΔ๷ޚͳ͠
49. 
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹݱࡏͷ৺഑ࣄϦετ
50. Agenda ୈ෦
    ༧๷తϓϩάϥϛϯά
    ୈ෦
    ߈ܸతϓϩάϥϛϯά
    ୈ෦
    ܖ໿ϓϩάϥϛϯά
51. GBJM
    GBTU
    ߈ܸతϓϩάϥϛϯά
52. w ίʔυதʹʮ͋Γಘͳ͍ʯͱࢥΘΕΔԿ͔ ͕ൃੜͨ͠৔߹ɺͦͷ࣌఺ͰϓϩάϥϜ͸ ΋͸΍࣮ߦՄೳͳ΋ͷͱ͸ͳ͍ͬͯͳ͍
    w ԿΒ͔ͷ͍͕ٙ͋ΔͷͰ͋Ε͹ɺͲͷΑ͏ ͳ৔߹Ͱ΋଎΍͔ʹఀࢭͤ͞Δ΂͖ɻ௨ৗ ͷ৔߹ɺো֐Λ๊͑ͯத్൒୺ʹಈ͍͍ͯ ΔϓϩάϥϜΑΓ΋ࢮΜͩϓϩάϥϜͷ΄ ͏͕μϝʔδ͸গͳ͍ ώϯτ
    ૣΊʹΫϥογϡͤ͞Δ͜ͱ
53. IUUQTXXXBTURCPSHQSFTTSPPN*452#@$FSUJpDBUJPO@/FXT@@IUNM ো֐Λ๊͑ͯ
    த్൒୺ʹಈ͍͍ͯΔϓϩάϥϜΑΓ΋
    ࢮΜͩϓϩάϥϜͷ΄͏͕
    μϝʔδ͸গͳ͍
54. ͦΜͳʹؾָʹ
    γεςϜΛམͱͯ͠
    ͍͍ͷ
    
55. w ࠷దͳΤϥʔॲཧ͸Τϥʔ͕ൃੜͨ͠ιϑτ΢ΣΞ ͷछྨʹΑΓҟͳΔ
    w ਖ਼౰ੑͱ͸ɺෆਖ਼֬ͳ݁ՌΛܾͯ͠ฦ͞ͳ͍͜ͱΛ ҙຯ͢Δɻෆਖ਼֬ͳ݁ՌΛฦ͘͢Β͍ͳΒɺԿ΋ฦ ͞ͳ͍ํ͕·͠Ͱ͋Δ
    w ݎ࿚ੑͱ͸ɺιϑτ΢ΣΞͷ࣮ߦΛܧଓͰ͖ΔΑ͏ ʹखΛਚ͘͢͜ͱͰ͋ΔɻͦΕʹΑͬͯෆਖ਼͕֬݁ Ռ͕΋ͨΒ͞ΕΔ͜ͱ͕͋ͬͯ΋͔·Θͳ͍
    w ҆શੑΛॏࢹ͢ΔΞϓϦέʔγϣϯͰ͸ɺݎ࿚ੑΑ Γ΋ਖ਼౰ੑ͕༏ઌ͞ΕΔ܏޲ʹ͋Δ
    w ίϯγϡʔϚΞϓϦέʔγϣϯͰ͸ɺਖ਼౰ੑΑΓ΋ ݎ࿚ੑ͕༏ઌ͞ΕΔ܏޲ʹ͋Δ ݎ࿚ੑͱਖ਼౰ੑ
56. ݸʑͷΫϥε͸ਖ਼౰ੑΛॏࢹ͠ɺ
    ݎ࿚ੑ͸ΞʔΩςΫνϟϑϨʔϜϫʔΫ౳Ͱ
    อূ͢Δͷ͕Φεεϝ
    ྫ
    ݸʑͷΫϥε͸
    GBJM
    GBTU
    ݪଇͰॻ͖ɺ8FC
    ϑϨʔϜϫʔΫ΍άϩʔόϧϋϯυϥ͕Ωϟον ͯ͠
    
    Τϥʔը໘౳Λग़͢੹຿Λෛ͏
57. ҉໧ͷલఏΛ໌ࣔ͠
    όάΛ͋ͿΓग़͢
    ද໌ϓϩάϥϛϯά
58. ʮى͜Δ͸͕ͣͳ͍ʯͱࢥͬͯ ͍Δ͜ͱ͕͋Ε͹ɺͦΕΛνΣο Ϋ͢ΔίʔυΛ௥Ճͯͩ͘͠͞ ͍ɻද໌ BTTFSUJPO Λ༻͍Δͷ ͕࠷΋؆୯ͳํ๏Ͱ͢ ώϯτ
    ΋͠ى͜Γಘͳ͍ͱ͍͏ͷͰ͋Ε͹ɺ ද໌Λ༻͍ͯͦΕΛอূ͢Δ͜ͱ
59. 1)1
    ͷ
    BTTFSU 1 ) 1  IUUQQIQOFUNBOVBMKBGVODUJPOBTTFSUQIQ
60. class BugRepository { public function __construct(PDO $pdo) { assert(class_exists('Bug')); $this->pdo = $pdo; } ɹBTTFSU
    ͷҾ਺ʹධՁࣜΛॻ͘
61. $ php example.php PHP Warning: assert(): assert(class_exists('Bug')) failed in /path/to/example.php on line 54 PHP Fatal error: Class 'Bug' not found in /path/to/ example.php on line 66 ɹͬͦ͘͞ද໌ೖΓͷίʔυΛ࣮ߦͯ͠ΈΔ
    ධՁ͕ࣜग़ͯΘ͔Γ΍͍͢
    
    Ͱ΋ܯࠂ͕ग़Δ͚ͩͰɺམͪͳ͍  1 ) 1 
62. 1)1
    ͷ
    BTTFSU
    ͷઃఆ 1 ) 1  PHP5 との互換性を保つためデフォルトでは警告になっている。 つまり php.ini で assert.exception = 1 にすべし IUUQQIQOFUNBOVBMKBGVODUJPOBTTFSUQIQ
63. $ php example.php PHP Fatal error: Uncaught AssertionError: assert(class_exists('Bug')) in /path/to/example.php:54 Stack trace: #0 /path/to/example.php(54): assert(false, 'assert(class_ex...') #1 /path/to/example.php(74): BugRepository->__construct(Object(PDO)) #2 {main} thrown in /path/to/example.php on line 54 ɹBTTFSUFYDFQUJPO
    
    
    ʹͯ͠࠶࣮ߦ ͖ͪΜͱද໌ҧ൓ͰམͪΔ Α͏ʹͳͬͨ
    1 ) 1 
64. w ද໌͸ίϛϡχέʔγϣϯͱσόοάͷπʔϧͱ ͯ͠ಇ͘
    w ίϛϡχέʔγϣϯͷ؍఺Ͱ͸ɺද໌Λॻ͘͜ͱ ʹΑͬͯɺͦͷίʔυΛॻ͍ͨͱ͖ͷલఏΛίʔ υͷಡΈख͕ཧղ͠΍͘͢ͳΔ
    w σόοάͷ؍఺Ͱ͸ɺόάΛͦͷݪҼʹ͍ۙͱ͜ ΖͰൃݟ͠΍͘͢ͳΔ
    w ςετίʔυΛॻ͍ͯ͋Ε͹ɺσόοάͷࢧԉ͸ ͞΄ͲॏཁͰ͸ͳ͍͕ɺͦΕͰ΋ίϛϡχέʔ γϣϯͷ؍఺ʹ͓͚Δද໌ͷՁ஋͸ɺґવͱͯ͠ ༗ޮ ද໌ͷϝϦοτ
65. ྫ֎ͱද໌ͷ࢖͍෼͚ w ຊདྷͷΤϥʔॲཧʹද໌Λ࢖ͬͯ͸͍ ͚·ͤΜɻද໌͸ى͜Γಘͳ͍͜ͱΛ νΣοΫ͢ΔͨΊͷ΋ͷͰ͢
    ৽૷൛
    ୡਓϓϩάϥϚʔ
    w ൃੜ͕༧૝͞ΕΔঢ়گʹ͸Τϥʔॲཧ ίʔυΛ࢖༻͠ɺൃੜͯ͠͸ͳΒͳ͍ ঢ়گʹ͸ΞαʔγϣϯΛ࢖༻͢Δ
    $0%&
    $0.1-&5&
    ୈ൛
66. w͋·Γʹ΋๷ޚతͳϓϩάϥϛϯ ά΋ɺͦΕ͸ͦΕͰ໰୊
    wҾ਺Λߟ͑ΒΕΔݶΓͷ৔ॴͰ ߟ͑ΒΕΔݶΓͷํ๏ͰνΣο Ϋ͢Ε͹ɺϓϩάϥϜ͸ංେԽ ͠௿଎ʹͳΔ BTTFSUJPO
    ΛೖΕ͗͢Δͱ
    ௿଎ʹͳΔͷͰ͸ʁ ʮ๷ޚతϓϩάϥϛϯάʹର͢Δ๷ޚʯΑΓ
67. ͦ͜Ͱ1)1Ͱ͢Α 1 ) 1  php.ini の zend.assertions で表明のオン/オフを制御できる IUUQQIQOFUNBOVBMKBGVODUJPOBTTFSUQIQ
68. class BugRepository { public function __construct(PDO $pdo) { assert(class_exists('Bug')); $this->pdo = $pdo; } ɹ[FOEBTTFSUJPOT
    
    
    ද໌Φϯ 1 ) 1 
69. ɹ[FOEBTTFSUJPOT
    
    
    ද໌Φϑ php.ini に zend.assertions = -1 と設定すれば表明を除去できる class BugRepository { public function __construct(PDO $pdo) { assert(class_exists('Bug')); $this->pdo = $pdo; } 1 ) 1 
70. ද໌ʹҾ͖౉͢৚݅ʹ͸෭࡞༻͕ ͋ͬͯ͸͍͚·ͤΜɻίϯύΠϧ࣌ʹ ද໌͕Φϑʹ͞ΕΔ৔߹΋͋Δͱ͍ ͏఺Λ๨Εͯ͸͍͚·ͤΜɻ
    ͭ·Γ
    BTTFSU
    தʹ͸࣮ߦʹඞཁͳ ίʔυΛهड़ͯ͠͸͍͚ͳ͍ͷͰ͢ ʮώϯτ
    ΋͠ى͜Γಘͳ͍ͱ͍͏ͷͰ͋Ε͹ɺද໌Λ༻͍ͯͦΕΛอূ͢Δ͜ͱʯΑΓ ɹΦϑʹ͞ΕΔ͜ͱΛҙࣝͯ͠ॻ͘ 副作用の例: assert(end($users));
71. 
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    #VH
    Ϋϥε͕ະఆٛ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ✔ ɹݱࡏͷ৺഑ࣄϦετ
72. ʮ͔΋͠Εͳ͍ʯ
    ྫ֎తঢ়گʹରॲ ͢Δ
73. ͖ͷ͜
    
    ΤϥʔΛແࢹ͢Δͳ wΤϥʔΛແࢹͯ͠΋Կ΋ྑ͍͜ͱ͸ແ͍
    wෆ҆ఆͳίʔυ
    wηΩϡϦςΟ্໰୊ͷ͋Δίʔυ
    wශऑͳߏ଄ͱΠϯλʔϑΣΠε
    wͲ͏͢Δ
    w໭Γ஋Λ࢖͏
    wྫ֎Λ࢖͏
74. public function findAll(int $assignedTo, Status $status) { $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; if (($stmt = $this->pdo->prepare($sql)) !== false) { if ($stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT) !== false) { if ($stmt->bindValue(':status', $status->value(), PDO::PARAM_STR) !== false) { if ($stmt->execute() !== false) { if (($bugs = $stmt->fetchAll(PDO::FETCH_CLASS,'Bug')) !== false) { return $bugs; } } } } } return false; } ɹ1%0Τϥʔ࣌ͷ໭Γ஋ GBMTF ΛνΣοΫ͢Δ # " %
    ೾ಈݓ
    NJYFE
    ฦ͠
75. public function findAll(int $assignedTo, Status $status) { $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; if (($stmt = $this->pdo->prepare($sql)) === false) { $error = $this->pdo->errorInfo(); report_error('prepare: ' . $error[2]); return false; } if ($stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT) === false) { $error = $stmt->errorInfo(); report_error('bindValue: ' . $error[2]); return false; } if ($stmt->bindValue(':status', $status->value(), PDO::PARAM_STR) === false) { $error = $stmt->errorInfo(); report_error('bindValue: ' . $error[2]); return false; } if ($stmt->execute() === false) { $error = $stmt->errorInfo(); report_error('execute: ' . $error[2]); return false; } if (($bugs = $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug')) === false) { $error = $stmt->errorInfo(); report_error('fetchAll: ' . $error[2]); return false; } return $bugs; } ɹ໭Γ஋ GBMTF ΛνΣοΫͯ͠ૣظϦλʔϯ # " % ஫
    SFQPSU@FSSPS
    ͸ϩάʹग़ࣗ͢࡞ؔ਺
    NJYFE
    ฦ͠
76. ໭Γ஋ͷऑ఺ ໭Γ஋͸
    ɹ
    ίʔυ͕ංେԽ͕ͪ͠
    ɹ
    ແࢹ͞Ε΍͍͢
    ɹ
    ͨͱ͑ॏେͳ໰୊͕જΜͰ͍ͯ ΋ɺ໭Γ஋͚ͩͰ͸఻ΘΓʹ͍͘
    ࣮ࡍ
    $
    ݴޠͷؔ਺ͷ໭Γ஋ͷதʹ͸ʮແࢹ͢Δͷ͕ී ௨ʯͱ͞Ε͍ͯΔ΋ͷ͑͋͞Δ
77. ෆ۩߹ͷൃݟ͕
    ஗ΕΕ͹஗ΕΔ΄Ͳ
    ই͸ਂ͘ͳΔ IUUQTXXXBTURCPSHQSFTTSPPN*452#@$FSUJpDBUJPO@/FXT@@IUNM
78. PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION それだ!! 1%0
    Λྫ֎Ϟʔυʹ͠Α͏ IUUQQIQOFUNBOVBMKBQEPFSSPSIBOEMJOHQIQ
79. public function findAll(int $assignedTo, Status $status) { $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $this->pdo->prepare($sql); $stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT); $stmt->bindValue(':status', $status->value(), PDO::PARAM_STR); $stmt->execute(); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } // 設定者 $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false, PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, ]); $repo = new BugRepository($pdo); ɹGBMTF
    ͷ୅ΘΓʹ
    1%0&YDFQUJPO
    ͕ൃੜ͢ΔΑ͏ʹͳΔ $ php example.php PHP Fatal error: Uncaught PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'date_reported' in 'field list' in /path/ to/example.php:63
80. public function findAll(int $assignedTo, Status $status) { assert($this->pdo->getAttribute(PDO::ATTR_ERRMODE) === PDO::ERRMODE_EXCEPTION); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $this->pdo->prepare($sql); ɹൃੜͨ͠҉໧ͷલఏΛ
    BTTFSU
    Ͱ໌ࣔ͢Δ あらたに PDO::ERRMODE_EXCEPTION に 依存するようになったことを assert で明示する
81. wྫ֎ͷ࠷େͷར఺͸ɺແࢹͰ͖ͳ͍ ํ๏ͰΤϥʔঢ়ଶΛ஌ΒͤΔ͜ͱͰ ͋Δ
    ΦϒδΣΫτࢦ޲ೖ໳ୈ൛
    wྫ֎ΛނҙʹѲΓͭͿ͢͜ͱ͸Մೳ ͕ͩɺͦ͏͍͏ίʔυ͕ॻ͔Ε͍ͯ Δͱ͖͸ɺॻ͖खͷ࢟੎ʹ໰୊͕͋ Δͱ͙͢ʹΘ͔Δ
    ͖ͷ͜ ྫ֎ͷར఺
82. IUUQTXXXBTURCPSHQSFTTSPPN*452#@$FSUJpDBUJPO@/FXT@@IUNM ୈ෦·ͱΊ
    lGBJM
    GBTUz
    ো֐Λ๊͑ͯ
    த్൒୺ʹಈ͍͍ͯΔϓϩάϥϜΑΓ΋
    ࢮΜͩϓϩάϥϜͷ΄͏͕
    μϝʔδ͸গͳ͍
83. 
    ςʔϒϧ໊΍ΧϥϜ໊͕୭͔ʹมߋ͞Εͨ
    
    ్தͰσʔλϕʔε઀ଓΤϥʔ ɹݱࡏͷ৺഑ࣄϦετ ✔
84. Agenda ୈ෦
    ༧๷తϓϩάϥϛϯά
    ୈ෦
    ߈ܸతϓϩάϥϛϯά
    ୈ෦
    ܖ໿ϓϩάϥϛϯά
85. ͩΕͷ੹຿͔
    ϋοΩϦͤ͞Δ
    ܖ໿ʹΑΔઃܭ
86. ܖ໿ʹΑΔઃܭ
87. wܖ໿ʹΑΔઃܭͱ͸ɺιϑτ΢ΣΞ Ϟδϡʔϧͷݖརͱ੹೚ΛจॻԽʢͦ ͯ͠ঝ୚ʣ͠ɺϓϩάϥϜͷਖ਼͠͞ Λอূ͢ΔͨΊͷ؆͔ܿͭύϫϑϧ ͳٕ๏Ͱ͢
    wͰ͸ɺਖ਼͍͠ϓϩάϥϜͱ͸ҰମԿ Ͱ͠ΐ͏͔ʁ
    ͜Ε͸ɺཁٻ͞Εͨ͜ ͱҎ্ͷ͜ͱ΋ɺͦΕҎԼͷ͜ͱ΋ ߦΘͳ͍ͱ͍͏΋ͷͰ͢ ώϯτ
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88. \1^
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89. w΋ͦͪ͠Β͕ࣄલ৚݅Λຬͨͨ͠ঢ় ଶͰࢲΛݺͿͱ໿ଋͯ͠Լ͞ΔͳΒ ͹ɺ͓ฦ͠ʹࣄޙ৚݅Λຬͨ͢ঢ়ଶ Λ࠷ऴతʹ࣮ݱ͢Δ͜ͱΛ͓໿ଋ͠ ·͢ ܖ໿ʹΑΔઃܭ
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90. ੒ޭ
    
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91. w࣮ߦ࣌ͷද໌ҧ൓
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    wࣄલ৚݅ҧ൓͸ݺͼग़͠ଆʹόά͕ ͋ΔূڌͰ͋Δ
    wࣄޙ৚݅ҧ൓͸ڙڅऀଆʹόά͕͋ ΔূڌͰ͋Δ ܖ໿ʹΑΔઃܭ
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92. Throwable ├── Error │ ├── ArithmeticError │ │ └── DivisionByZeroError │ ├── AssertionError │ ├── ParseError │ └── TypeError └── Exception ├── ErrorException ├── LogicException │ ├── BadFunctionCallException │ │ └── BadMethodCallException │ ├── DomainException │ ├── InvalidArgumentException │ ├── LengthException │ └── OutOfRangeException └── RuntimeException ├── OutOfBoundsException ├── OverflowException ├── PDOException ├── RangeException ├── UnderflowException └── UnexpectedValueException 1 ) 1 
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93. ίϯετϥΫλͷ
    ܖ໿
94. /** * 検索処理に使用する PDO インスタンスを渡し、バグリポジトリを初期化する。 * * @param PDO $pdo PDO インスタンス。 PDO::ATTR_ERRMODE が PDO::ERRMODE_EXCEPTION に 設定されていること * @throws InvalidArgumentException PDO::ATTR_ERRMODE が適切に設定されていない場合 */ public function __construct(PDO $pdo) { if ($pdo->getAttribute(PDO::ATTR_ERRMODE) !== PDO::ERRMODE_EXCEPTION) { throw new InvalidArgumentException('requires PDO::ERRMODE_EXCEPTION'); } assert(class_exists('Bug')); $this->pdo = $pdo; } ɹίϯετϥΫλͷࣄલ৚݅Λදݱ͢Δ
95. pOE"MM
    ϝιου ͷܖ໿
96. /** * 指定された担当者 ID およびステータスに合致する Bug を検索し、ヒットした全件を Bug オブジェクトの配列として返す。 * * @param int $assignedTo 担当者ID * @param Status $status ステータス * @return Bug[] 条件に合致した Bug オブジェクトの配列を返す。検索に合致するものがな い場合は空配列を返す * @throws LogicException カラム名違いや文法エラー等SQLのミスが存在する場合 * @throws PDOException データベースとのやりとりに何らかの障害が発生した場合 */ public function findAll(int $assignedTo, Status $status): array { assert($this->pdo->getAttribute(PDO::ATTR_ERRMODE) === PDO::ERRMODE_EXCEPTION); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; try { $stmt = $this->pdo->prepare($sql); $stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT); $stmt->bindValue(':status', $status->value(), PDO::PARAM_STR); $stmt->execute(); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } catch (PDOException $e) { if ($this->isGrammaticalError($e->getCode())) { throw new LogicException($e->getMessage(), $e->errorInfo[1], $e); } throw $e; } } ɹpOE"MM
    ϝιουͷࣄޙ৚݅Λදݱ͢Δ
97. } catch (PDOException $e) { if ($this->isGrammaticalError($e->getCode())) { throw new LogicException($e->getMessage(), $e->errorInfo[1], $e); } throw $e; } ɹpOE"MM
    ϝιουͷࣄޙ৚݅Λදݱ͢Δ SQLSTATE の値を調査し、 PDOException の内容が例外で はなくあきらかにバグの場合は、 バグを示す LogicException で包んで投げ直している。 その際に第3引数を忘れずに設定し、スタックトレースを つなぐ
98. ୈ෦·ͱΊ
    
    όάͱྫ֎Λ۠ผ͠ɺ
    ͞Βʹ୭ͷ੹೚͔΋ݟ෼͚ΒΕΔΑ͏ʹ͢Δ IUUQRJJUBDPN,PLVEPSJJUFNTBDGBC
99. ·ͱΊ
100. public static function findAll($params) { if (is_null($params)) { throw new InvalidArgumentException('params should not be null'); } if (!is_array($params)) { throw new InvalidArgumentException('params should be an array'); } if (count($params) !== 2) { throw new InvalidArgumentException('params should be have exact two items'); } if (!array_key_exists('assignedTo', $params) || !array_key_exists('status', $params)) { throw new InvalidArgumentException('params should have key `assignedTo` and `status` only'); } if (!is_int($params['assignedTo'])) { throw new InvalidArgumentException('params[`assignedTo`] should be an integer'); } if (!is_string($params['status'])) { throw new InvalidArgumentException('params[`status`] should be a string'); } if (!in_array($params['status'], ['OPEN', 'NEW', 'FIXED'], true)) { throw new InvalidArgumentException('params[`status`] should be in `OPEN`,`NEW`,`FIXED`'); } global $CONF; if (!isset($CONF['dsn'])) { throw new LogicException('config key `dsn` not found'); } if (!isset($CONF['usr'])) { throw new LogicException('config key `usr` not found'); } if (!isset($CONF['passwd'])) { throw new LogicException('config key `passwd` not found'); } $pdo = new PDO($CONF['dsn'], $CONF['usr'], $CONF['passwd'], [ PDO::ATTR_EMULATE_PREPARES => false ]); $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $pdo->prepare($sql); $stmt->execute($params); if (!class_exists('Bug')) { throw new LogicException('class `Bug` does not exist'); } return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } public function __construct(PDO $pdo) { $this->pdo = $pdo; } public function findAll(int $assignedTo, Status $status) { $sql = 'SELECT bug_id, summary, date_reported FROM Bugs WHERE assigned_to = :assignedTo AND status = :status'; $stmt = $this->pdo->prepare($sql); $stmt->bindValue(':assignedTo', $assignedTo, PDO::PARAM_INT); $stmt->bindValue(':status', $status->value(), PDO::PARAM_STR); $stmt->execute(); return $stmt->fetchAll(PDO::FETCH_CLASS, 'Bug'); } ୈ෦·ͱΊ
     ༧๷ʹউΔ๷ޚͳ͠
101. IUUQTXXXBTURCPSHQSFTTSPPN*452#@$FSUJpDBUJPO@/FXT@@IUNM ୈ෦·ͱΊ
     lGBJM
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     த్൒୺ʹಈ͍͍ͯΔϓϩάϥϜΑΓ΋
     ࢮΜͩϓϩάϥϜͷ΄͏͕
     μϝʔδ͸গͳ͍
102. ୈ෦·ͱΊ
     
     όάͱྫ֎Λ۠ผ͠ɺ
     ͞Βʹ୭ͷ੹೚͔΋ݟ෼͚ΒΕΔΑ͏ʹ͢Δ IUUQRJJUBDPN,PLVEPSJJUFNTBDGBC
103. lݡ໌ͳιϑτ΢ΣΞٕज़ऀʹ ͳΔͨΊͷୈҰา͸ɺಈ͘ϓ ϩάϥϜΛॻ͘͜ͱͱਖ਼͍͠ ϓϩάϥϜΛద੾ʹ࡞੒͢Δ ͜ͱͷҧ͍Λೝࣝ͢Δ͜ͱz Š
     ."+BDLTPO
      ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠