fork download
copy 
  1. "============================================================"
  2. " 大学図書館貸出システム"
  3. " Ideone / GNU Smalltalk向け"
  4. "============================================================"
  5.  
  6.  
  7. "------------------------------------------------------------"
  8. " Book：図書"
  9. "------------------------------------------------------------"
  10.  
  11. Object subclass: #Book
  12.     instanceVariableNames: 'isbn title author available'
  13.     classVariableNames: ''
  14.     poolDictionaries: ''
  15.     category: 'UniversityLibrary'!
  16.  
  17.  
  18. !Book class methodsFor: 'instance creation'!
  19.  
  20. isbn: anISBN title: aTitle author: anAuthor
  21.     ^self new
  22.         initializeISBN: anISBN
  23.         title: aTitle
  24.         author: anAuthor
  25. !
  26.  
  27. !
  28.  
  29.  
  30. !Book methodsFor: 'initialization'!
  31.  
  32. initializeISBN: anISBN title: aTitle author: anAuthor
  33.     isbn := anISBN.
  34.     title := aTitle.
  35.     author := anAuthor.
  36.     available := true.
  37.     ^self
  38. !
  39.  
  40. !
  41.  
  42.  
  43. !Book methodsFor: 'accessing'!
  44.  
  45. isbn
  46.     ^isbn
  47. !
  48.  
  49. title
  50.     ^title
  51. !
  52.  
  53. author
  54.     ^author
  55. !
  56.  
  57. isAvailable
  58.     ^available
  59. !
  60.  
  61. !
  62.  
  63.  
  64. !Book methodsFor: 'loan operations'!
  65.  
  66. borrow
  67.     available
  68.         ifFalse: [self error: 'この図書はすでに貸出中です'].
  69.  
  70.     available := false
  71. !
  72.  
  73. returnBook
  74.     available
  75.         ifTrue: [self error: 'この図書は貸出されていません'].
  76.  
  77.     available := true
  78. !
  79.  
  80. !
  81.  
  82.  
  83. !Book methodsFor: 'printing'!
  84.  
  85. printOn: aStream
  86.     aStream
  87.         nextPutAll: title;
  88.         nextPutAll: ' / ';
  89.         nextPutAll: author;
  90.         nextPutAll: ' [ISBN: ';
  91.         nextPutAll: isbn;
  92.         nextPutAll: ']'.
  93.  
  94.     available
  95.         ifTrue: [aStream nextPutAll: ' 貸出可能']
  96.         ifFalse: [aStream nextPutAll: ' 貸出中']
  97. !
  98.  
  99. !
  100.  
  101.  
  102. "------------------------------------------------------------"
  103. " Member：図書館利用者"
  104. "------------------------------------------------------------"
  105.  
  106. Object subclass: #Member
  107.     instanceVariableNames: 'memberId name memberType'
  108.     classVariableNames: ''
  109.     poolDictionaries: ''
  110.     category: 'UniversityLibrary'!
  111.  
  112.  
  113. !Member class methodsFor: 'instance creation'!
  114.  
  115. id: anId name: aName type: aType
  116.     ^self new
  117.         initializeId: anId
  118.         name: aName
  119.         type: aType
  120. !
  121.  
  122. !
  123.  
  124.  
  125. !Member methodsFor: 'initialization'!
  126.  
  127. initializeId: anId name: aName type: aType
  128.     memberId := anId.
  129.     name := aName.
  130.     memberType := aType.
  131.     ^self
  132. !
  133.  
  134. !
  135.  
  136.  
  137. !Member methodsFor: 'accessing'!
  138.  
  139. memberId
  140.     ^memberId
  141. !
  142.  
  143. name
  144.     ^name
  145. !
  146.  
  147. memberType
  148.     ^memberType
  149. !
  150.  
  151. loanLimit
  152.     memberType = #student
  153.         ifTrue: [^3].
  154.  
  155.     memberType = #teacher
  156.         ifTrue: [^10].
  157.  
  158.     ^2
  159. !
  160.  
  161. loanPeriod
  162.     memberType = #teacher
  163.         ifTrue: [^30].
  164.  
  165.     ^14
  166. !
  167.  
  168. typeName
  169.     memberType = #student
  170.         ifTrue: [^'学生'].
  171.  
  172.     memberType = #teacher
  173.         ifTrue: [^'教職員'].
  174.  
  175.     ^'その他'
  176. !
  177.  
  178. !
  179.  
  180.  
  181. !Member methodsFor: 'printing'!
  182.  
  183. printOn: aStream
  184.     aStream
  185.         nextPutAll: name;
  186.         nextPutAll: ' [利用者番号: ';
  187.         nextPutAll: memberId;
  188.         nextPutAll: ', 区分: ';
  189.         nextPutAll: self typeName;
  190.         nextPutAll: ']'
  191. !
  192.  
  193. !
  194.  
  195.  
  196. "------------------------------------------------------------"
  197. " Loan：貸出記録"
  198. " 日付は、例を簡単にするため整数の日数で表現する"
  199. "------------------------------------------------------------"
  200.  
  201. Object subclass: #Loan
  202.     instanceVariableNames: 'book member loanDay dueDay returnedDay'
  203.     classVariableNames: ''
  204.     poolDictionaries: ''
  205.     category: 'UniversityLibrary'!
  206.  
  207.  
  208. !Loan class methodsFor: 'instance creation'!
  209.  
  210. book: aBook member: aMember loanDay: aLoanDay
  211.     ^self new
  212.         initializeBook: aBook
  213.         member: aMember
  214.         loanDay: aLoanDay
  215. !
  216.  
  217. !
  218.  
  219.  
  220. !Loan methodsFor: 'initialization'!
  221.  
  222. initializeBook: aBook member: aMember loanDay: aLoanDay
  223.     book := aBook.
  224.     member := aMember.
  225.     loanDay := aLoanDay.
  226.     dueDay := aLoanDay + member loanPeriod.
  227.     returnedDay := nil.
  228.     ^self
  229. !
  230.  
  231. !
  232.  
  233.  
  234. !Loan methodsFor: 'accessing'!
  235.  
  236. book
  237.     ^book
  238. !
  239.  
  240. member
  241.     ^member
  242. !
  243.  
  244. loanDay
  245.     ^loanDay
  246. !
  247.  
  248. dueDay
  249.     ^dueDay
  250. !
  251.  
  252. returnedDay
  253.     ^returnedDay
  254. !
  255.  
  256. isActive
  257.     ^returnedDay isNil
  258. !
  259.  
  260. isOverdueOn: currentDay
  261.     ^self isActive and: [currentDay > dueDay]
  262. !
  263.  
  264. !
  265.  
  266.  
  267. !Loan methodsFor: 'returning'!
  268.  
  269. returnOn: aDay
  270.     self isActive
  271.         ifFalse: [self error: 'この貸出記録はすでに返却済みです'].
  272.  
  273.     returnedDay := aDay.
  274.     book returnBook
  275. !
  276.  
  277. !
  278.  
  279.  
  280. !Loan methodsFor: 'printing'!
  281.  
  282. printOn: aStream
  283.     aStream
  284.         nextPutAll: member name;
  285.         nextPutAll: ' -> ';
  286.         nextPutAll: book title;
  287.         nextPutAll: ' / 貸出日: ';
  288.         print: loanDay;
  289.         nextPutAll: ' / 返却期限: ';
  290.         print: dueDay.
  291.  
  292.     self isActive
  293.         ifTrue: [aStream nextPutAll: ' / 貸出中']
  294.         ifFalse: [
  295.             aStream
  296.                 nextPutAll: ' / 返却日: ';
  297.                 print: returnedDay
  298.         ]
  299. !
  300.  
  301. !
  302.  
  303.  
  304. "------------------------------------------------------------"
  305. " Library：大学図書館"
  306. "------------------------------------------------------------"
  307.  
  308. Object subclass: #Library
  309.     instanceVariableNames: 'name books members loans'
  310.     classVariableNames: ''
  311.     poolDictionaries: ''
  312.     category: 'UniversityLibrary'!
  313.  
  314.  
  315. !Library class methodsFor: 'instance creation'!
  316.  
  317. named: aName
  318.     ^self new initializeName: aName
  319. !
  320.  
  321. !
  322.  
  323.  
  324. !Library methodsFor: 'initialization'!
  325.  
  326. initializeName: aName
  327.     name := aName.
  328.     books := OrderedCollection new.
  329.     members := OrderedCollection new.
  330.     loans := OrderedCollection new.
  331.     ^self
  332. !
  333.  
  334. !
  335.  
  336.  
  337. !Library methodsFor: 'registration'!
  338.  
  339. addBook: aBook
  340.     (self findBookByISBN: aBook isbn) notNil
  341.         ifTrue: [self error: '同じISBNの図書が登録されています'].
  342.  
  343.     books add: aBook
  344. !
  345.  
  346. registerMember: aMember
  347.     (self findMemberById: aMember memberId) notNil
  348.         ifTrue: [self error: '同じ利用者番号が登録されています'].
  349.  
  350.     members add: aMember
  351. !
  352.  
  353. !
  354.  
  355.  
  356. !Library methodsFor: 'searching'!
  357.  
  358. findBookByISBN: anISBN
  359.     books do: [:each |
  360.         each isbn = anISBN
  361.             ifTrue: [^each]
  362.     ].
  363.  
  364.     ^nil
  365. !
  366.  
  367. findMemberById: anId
  368.     members do: [:each |
  369.         each memberId = anId
  370.             ifTrue: [^each]
  371.     ].
  372.  
  373.     ^nil
  374. !
  375.  
  376. findBooksByTitle: aKeyword
  377.     | result |
  378.  
  379.     result := OrderedCollection new.
  380.  
  381.     books do: [:each |
  382.         (each title includesSubString: aKeyword)
  383.             ifTrue: [result add: each]
  384.     ].
  385.  
  386.     ^result
  387. !
  388.  
  389. activeLoansFor: aMember
  390.     | result |
  391.  
  392.     result := OrderedCollection new.
  393.  
  394.     loans do: [:each |
  395.         (each member == aMember and: [each isActive])
  396.             ifTrue: [result add: each]
  397.     ].
  398.  
  399.     ^result
  400. !
  401.  
  402. activeLoanForBook: aBook
  403.     loans do: [:each |
  404.         (each book == aBook and: [each isActive])
  405.             ifTrue: [^each]
  406.     ].
  407.  
  408.     ^nil
  409. !
  410.  
  411. !
  412.  
  413.  
  414. !Library methodsFor: 'loan operations'!
  415.  
  416. lendISBN: anISBN toMember: anId onDay: aDay
  417.     | book member activeLoans loan |
  418.  
  419.     book := self findBookByISBN: anISBN.
  420.     book isNil
  421.         ifTrue: [self error: '指定された図書が見つかりません'].
  422.  
  423.     member := self findMemberById: anId.
  424.     member isNil
  425.         ifTrue: [self error: '指定された利用者が見つかりません'].
  426.  
  427.     book isAvailable
  428.         ifFalse: [self error: '指定された図書は貸出中です'].
  429.  
  430.     activeLoans := self activeLoansFor: member.
  431.  
  432.     activeLoans size >= member loanLimit
  433.         ifTrue: [self error: '貸出可能冊数を超えています'].
  434.  
  435.     book borrow.
  436.  
  437.     loan := Loan
  438.         book: book
  439.         member: member
  440.         loanDay: aDay.
  441.  
  442.     loans add: loan.
  443.  
  444.     ^loan
  445. !
  446.  
  447. returnISBN: anISBN onDay: aDay
  448.     | book loan |
  449.  
  450.     book := self findBookByISBN: anISBN.
  451.     book isNil
  452.         ifTrue: [self error: '指定された図書が見つかりません'].
  453.  
  454.     loan := self activeLoanForBook: book.
  455.     loan isNil
  456.         ifTrue: [self error: 'この図書の有効な貸出記録がありません'].
  457.  
  458.     loan returnOn: aDay.
  459.  
  460.     ^loan
  461. !
  462.  
  463. !
  464.  
  465.  
  466. !Library methodsFor: 'reporting'!
  467.  
  468. showBooks
  469.     Transcript
  470.         cr;
  471.         show: '===== 図書一覧 =====';
  472.         cr.
  473.  
  474.     books do: [:each |
  475.         Transcript
  476.             show: each printString;
  477.             cr
  478.     ]
  479. !
  480.  
  481. showMembers
  482.     Transcript
  483.         cr;
  484.         show: '===== 利用者一覧 =====';
  485.         cr.
  486.  
  487.     members do: [:each |
  488.         Transcript
  489.             show: each printString;
  490.             cr
  491.     ]
  492. !
  493.  
  494. showActiveLoans
  495.     Transcript
  496.         cr;
  497.         show: '===== 現在の貸出一覧 =====';
  498.         cr.
  499.  
  500.     loans do: [:each |
  501.         each isActive
  502.             ifTrue: [
  503.                 Transcript
  504.                     show: each printString;
  505.                     cr
  506.             ]
  507.     ]
  508. !
  509.  
  510. showOverdueLoansOn: currentDay
  511.     Transcript
  512.         cr;
  513.         show: '===== 延滞一覧 =====';
  514.         cr.
  515.  
  516.     loans do: [:each |
  517.         (each isOverdueOn: currentDay)
  518.             ifTrue: [
  519.                 Transcript
  520.                     show: each printString;
  521.                     show: ' / 延滞日数: ';
  522.                     show: (currentDay - each dueDay) printString;
  523.                     cr
  524.             ]
  525.     ]
  526. !
  527.  
  528. !
  529.  
  530.  
  531. "============================================================"
  532. " 実行例"
  533. "============================================================"
  534.  
  535. Eval [
  536.     | library book1 book2 book3 student teacher loan1 loan2 |
  537.  
  538.     library := Library named: '○○大学図書館'.
  539.  
  540.     "図書を作成"
  541.  
  542.     book1 := Book
  543.         isbn: '978-4-00-000001-1'
  544.         title: 'Smalltalk入門'
  545.         author: '山田太郎'.
  546.  
  547.     book2 := Book
  548.         isbn: '978-4-00-000002-8'
  549.         title: 'オブジェクト指向設計'
  550.         author: '佐藤花子'.
  551.  
  552.     book3 := Book
  553.         isbn: '978-4-00-000003-5'
  554.         title: 'データベース基礎'
  555.         author: '鈴木一郎'.
  556.  
  557.     "利用者を作成"
  558.  
  559.     student := Member
  560.         id: 'S2023001'
  561.         name: '田中学生'
  562.         type: #student.
  563.  
  564.     teacher := Member
  565.         id: 'T1001'
  566.         name: '佐々木教授'
  567.         type: #teacher.
  568.  
  569.     "図書を登録"
  570.  
  571.     library addBook: book1.
  572.     library addBook: book2.
  573.     library addBook: book3.
  574.  
  575.     "利用者を登録"
  576.  
  577.     library registerMember: student.
  578.     library registerMember: teacher.
  579.  
  580.     Transcript
  581.         show: '大学図書館貸出システムを開始します';
  582.         cr.
  583.  
  584.     library showBooks.
  585.     library showMembers.
  586.  
  587.     "100日目に学生が借りる"
  588.  
  589.     loan1 := library
  590.         lendISBN: '978-4-00-000001-1'
  591.         toMember: 'S2023001'
  592.         onDay: 100.
  593.  
  594.     Transcript
  595.         cr;
  596.         show: '貸出処理: ';
  597.         show: loan1 printString;
  598.         cr.
  599.  
  600.     "105日目に教職員が借りる"
  601.  
  602.     loan2 := library
  603.         lendISBN: '978-4-00-000002-8'
  604.         toMember: 'T1001'
  605.         onDay: 105.
  606.  
  607.     Transcript
  608.         show: '貸出処理: ';
  609.         show: loan2 printString;
  610.         cr.
  611.  
  612.     library showActiveLoans.
  613.     library showBooks.
  614.  
  615.     "120日目時点の延滞を確認"
  616.  
  617.     library showOverdueLoansOn: 120.
  618.  
  619.     "学生が121日目に返却"
  620.  
  621.     library
  622.         returnISBN: '978-4-00-000001-1'
  623.         onDay: 121.
  624.  
  625.     Transcript
  626.         cr;
  627.         show: 'Smalltalk入門を返却しました';
  628.         cr.
  629.  
  630.     library showActiveLoans.
  631.     library showBooks.
  632. ]
Success #stdin #stdout 0.01s 9756KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
大学図書館貸出システムを開始します

===== 図書一覧 =====
Smalltalk入門 / 山田太郎 [ISBN: 978-4-00-000001-1] 貸出可能
オブジェクト指向設計 / 佐藤花子 [ISBN: 978-4-00-000002-8] 貸出可能
データベース基礎 / 鈴木一郎 [ISBN: 978-4-00-000003-5] 貸出可能

===== 利用者一覧 =====
田中学生 [利用者番号: S2023001, 区分: 学生]
佐々木教授 [利用者番号: T1001, 区分: 教職員]

貸出処理: 田中学生 -> Smalltalk入門 / 貸出日: 100 / 返却期限: 114 / 貸出中
貸出処理: 佐々木教授 -> オブジェクト指向設計 / 貸出日: 105 / 返却期限: 135 / 貸出中

===== 現在の貸出一覧 =====
田中学生 -> Smalltalk入門 / 貸出日: 100 / 返却期限: 114 / 貸出中
佐々木教授 -> オブジェクト指向設計 / 貸出日: 105 / 返却期限: 135 / 貸出中

===== 図書一覧 =====
Smalltalk入門 / 山田太郎 [ISBN: 978-4-00-000001-1] 貸出中
オブジェクト指向設計 / 佐藤花子 [ISBN: 978-4-00-000002-8] 貸出中
データベース基礎 / 鈴木一郎 [ISBN: 978-4-00-000003-5] 貸出可能

===== 延滞一覧 =====
田中学生 -> Smalltalk入門 / 貸出日: 100 / 返却期限: 114 / 貸出中 / 延滞日数: 6

Smalltalk入門を返却しました

===== 現在の貸出一覧 =====
佐々木教授 -> オブジェクト指向設計 / 貸出日: 105 / 返却期限: 135 / 貸出中

===== 図書一覧 =====
Smalltalk入門 / 山田太郎 [ISBN: 978-4-00-000001-1] 貸出可能
オブジェクト指向設計 / 佐藤花子 [ISBN: 978-4-00-000002-8] 貸出中
データベース基礎 / 鈴木一郎 [ISBN: 978-4-00-000003-5] 貸出可能
https://ideone.com/IyZcaq
language:
Smalltalk (gst 3.2.5)
created:
17 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!