Object model

In computing, object model has two related but distinct meanings:

  1. The properties of objects in general in a specific computer programming language, technology, notation or methodology that uses them. Examples are the object models of Java, the Component Object Model (COM), or Object-Modeling Technique (OMT). Such object models are usually defined using concepts such as class, generic function, message, inheritance, polymorphism, and encapsulation. There is an extensive literature on formalized object models as a subset of the formal semantics of programming languages.
  2. A collection of objects or classes through which a program can examine and manipulate some specific parts of its world. In other words, the object-oriented interface to some service or system. Such an interface is said to be the object model of the represented service or system. For example, the Document Object Model (DOM) is a collection of objects that represent a page in a web browser, used by script programs to examine and dynamically change the page. There is a Microsoft Excel object model [1] for controlling Microsoft Excel from another program, and the ASCOM Telescope Driver is an object model for controlling an astronomical telescope.

An object model consists of the following important features:

Object reference
Objects can be accessed via object references. To invoke a method in an object, the object reference and method name are given, together with any arguments.
Interfaces
An interface provides a definition of the signature of a set of methods without specifying their implementation. An object will provide a particular interface if its class contains code that implement the method of that interface. An interface also defines types that can be used to declare the type of variables or parameters and return values of methods.
Actions
An action in object-oriented programming (OOP) is initiated by an object invoking a method in another object. An invocation can include additional information needed to carry out the method. The receiver executes the appropriate method and then returns control to the invoking object, sometimes supplying a result.
Exceptions
Programs can encounter various errors and unexpected conditions of varying seriousness. During the execution of the method many different problems may be discovered. Exceptions provide a clean way to deal with error conditions without complicating the code. A block of code may be defined to throw an exception whenever particular unexpected conditions or errors arise. This means that control passes to another block of code that catches the exception.

See also

Literature

  • Weisfeld, Matt (2003). The Object-Oriented Thought Process (2nd ed.). Sams. ISBN 0-672-32611-6.
  • Fowler, Martin (1996). Analysis Patterns: Reusable Object Models. Addison-Wesley. ISBN 0-201-89542-0.
  • Fisher, K.; Honsell, F.; Mitchell, J.C. (1994). "A lambda calculus of objects and method specialization" (PDF). [1993] Proceedings Eighth Annual IEEE Symposium on Logic in Computer Science. Vol. 1. pp. 3–37. doi:10.1109/LICS.1993.287603. ISBN 0-8186-3140-6. S2CID 19578302. Archived from the original (PDF) on 2018-07-03. {{cite book}}: |journal= ignored (help)
  • Marini, Joe (2002). Document Object Model: Processing Structured Documents. Osborne/McGray-Hill. ISBN 0-07-222436-3.
  • Lippman, Stanley (1996). Inside the C++ Object Model. Addison-Wesley. ISBN 0-201-83454-5.


Stub icon

This software-engineering-related article is a stub. You can help Wikipedia by expanding it.

Read other articles:

Keluarga biola

Alat musik yang termasuk di dalam keluarga biola dimulai di Italia pada abad ke-17. Keluarga tersebut beranggotakan empat instrumen, biola, viola, selo, dan kontrabas. Kumpulan alat musik ini tergolong sebagai alat musik gesek atau alat musik berdawai yang dimainkan dengan digesek. Galeri foto Artikel bertopik lagu, musik, atau alat musik ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.lbs Pengawasan otoritas MusicBrainz instrument

 

Drew Pavlou

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada November 2022. Drew PavlouLahir4 Juni 1999 (umur 24)KebangsaanAustraliaPendidikan Villanova College Universitas Queensland Dikenal atasAktivisme pelajar melawan Partai Komunis Tiongkok dan pemerintahan TiongkokSitus webdrewpavlou.com Drew Pavlou (lahir 4 Juni 1...

 

Akademik Lomonosov

Akademik Lomonosov (Rusia: Академик Ломоносовcode: ru is deprecated ) adalah sebuah tongkang listrik non-self-propelled yang beroperasi sebagai pembangkit tenaga nuklir apung Rusia pertama. Kapal itu dinamai Akademisi Mikhail Lomonosov.[1][2][3][4][5][4][6][7][8][9] Referensi ^ Russia relocates construction of floating power plant.  ^ Kukushkin, Mikhail (16 April 2007). Плавучие АЭ...

Kantor Perserikatan Bangsa-Bangsa di Jenewa

Kantor Perserikatan Bangsa-Bangsa di JenewaPalais des Nations, gedung utama Kantor Perserikatan Bangsa-Bangsa di JenewaUNOGLokasi di SwissNama lainUNOGInformasi umumKotaJenewaNegara SwissKoordinat46°13′36″N 6°08′26″E / 46.226667°N 6.140556°E / 46.226667; 6.140556Koordinat: 46°13′36″N 6°08′26″E / 46.226667°N 6.140556°E / 46.226667; 6.140556Situs webwww.unog.ch Palais des Nations, bangunan utama Kantor PBB di Jenewa. Pada 2...

 

Tomasz Peta

Polish Catholic Archbishop His ExcellencyTomasz Bernard PetaArchbishop of Maria Santissima in AstanaChurchCatholic ChurchArchdioceseMary Most Holy in AstanaProvinceKazakhstanAppointed17 May 2003OrdersOrdination5 June 1976by Stefan WyszyńskiConsecration19 March 2001by John Paul IIRankMetropolitan ArchbishopPersonal detailsBorn (1951-08-20) 20 August 1951 (age 72)Inowrocław, PolandNationalityPolishDenominationCatholicResidenceAstana, KazakhstanPrevious post(s)Apostolic Administ...

 

تحقق

هذه المقالة بحاجة لصندوق معلومات. فضلًا ساعد في تحسين هذه المقالة بإضافة صندوق معلومات مخصص إليها. التحقق قيل مرادف للثبوت والكون والوجود. وقيل مرادف للثبوت وأعم من الكون والوجود. والتحقق قسمان: تحقق أصلي، وهو أن يكون التحقق حاصلا لشيء في نفسه قائما به، وتحقق تبعي وهو أن لا ...

Unione Sportiva Cremonese 1955-1956

Voce principale: Unione Sportiva Cremonese. Unione Sportiva CremoneseStagione 1955-1956Sport calcio Squadra Cremonese AllenatoreGéza Boldizsár PresidenteArturo Soncini Serie C 1955-19564º posto Maggiori presenzeCampionato: Franco Zaglio (32) Miglior marcatoreCampionato: Magnavacca (21) 1954-1955 1956-1957 Si invita a seguire il modello di voce Questa pagina raccoglie le informazioni riguardanti l'Unione Sportiva Cremonese nelle competizioni ufficiali della stagione 1955-1956. Indice ...

 

Akutagawa Prize

Japanese literary award You can help expand this article with text translated from the corresponding article in Japanese. (March 2021) Click [show] for important translation instructions. View a machine-translated version of the Japanese article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated te...

 

Deagon, Queensland

Map all coordinates using OpenStreetMap Download coordinates as: KML GPX (all coordinates) GPX (primary coordinates) GPX (secondary coordinates) Suburb of Brisbane, Queensland, AustraliaDeagonBrisbane, QueenslandDeagon Railway Station, Queensland, June 2012DeagonCoordinates27°19′42″S 153°03′36″E / 27.3283°S 153.0599°E / -27.3283; 153.0599Population3,675 (2016 census)[1] • Density1,225/km2 (3,170/sq mi)Postcode(s)4017Area3.0...

Kana Hanazawa

Kana HanazawaHanazawa pada bulan Oktober 2019Nama asal花澤 香菜Lahir25 Februari 1989 (umur 35)Tokyo, Jepang[1]Pekerjaan Pemeran pengisi suara penyanyi Tahun aktif1990–sekarangAgenOffice OsawaTinggi158 cm (5 ft 2 in)Suami/istriKenshō Ono ​(m. 2024)​PenghargaanAktris Pendukung Terbaik pada Seiyu Awards ke-9Karier musikGenreJ-PopInstrumenVokalTahun aktif2012–sekarangLabelAniplex (2012–2017)Sacra Music (2017–2021)Pon...

 

西遊記大結局之仙履奇緣

本條目存在以下問題，請協助改善本條目或在討論頁針對議題發表看法。 此條目需要編修，以確保文法、用詞、语气、格式、標點等使用恰当。 (2013年8月6日)請按照校對指引，幫助编辑這個條目。（幫助、討論） 此條目剧情、虛構用語或人物介紹过长过细，需清理无关故事主轴的细节、用語和角色介紹。 (2020年10月6日)劇情、用語和人物介紹都只是用於了解故事主軸，輔助�...

 

Omar Abdulrahman

Emirati footballer In this Arabic name, the surname is Al Raaki Al Amoodi. Omar Abdulrahman Abdulrahman with Al Ain in 2016Personal informationFull name Omar Abdulrahman Ahmed Al Raaki Al Amoudi[1]Date of birth (1991-09-20) 20 September 1991 (age 32)Place of birth Riyadh, Saudi Arabia[1]Height 1.73 m (5 ft 8 in)[2][3]Position(s) Attacking midfielder, wingerTeam informationCurrent team Al WaslNumber 11Youth career2000–2005 Al Hilal2006–20...

John Alden Mason

American archaeologist and linguist (1885–1967) John Alden MasonJohn Alden MasonBornJanuary 14, 1885Orland, Indiana, U.S.DiedNovember 7, 1967 (aged 82)Bryn Mawr Hospital, Bryn Mawr, Pennsylvania, U.S.NationalityAmericanOccupation(s)Linguist and anthropologistAcademic workMain interestsIndigenous languages of the Americas John Alden Mason (January 14, 1885 – November 7, 1967) was an American archaeological anthropologist and linguist. Mason was born in Orland, Indiana, but grew up in Phila...

 

دانيمورا (نيويورك)

دانيمورا     الإحداثيات 44°44′24″N 73°49′33″W / 44.74°N 73.8258°W / 44.74; -73.8258   [1] تاريخ التأسيس 1838  تقسيم إداري  البلد الولايات المتحدة[2]  التقسيم الأعلى نيويورك  خصائص جغرافية  المساحة 65.84 ميل مربع  ارتفاع 1439 قدم  عدد السكان  عدد السكان 403...

 

2017 Brihanmumbai Municipal Corporation election

Local elections in Maharashtra This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: 2017 Brihanmumbai Municipal Corporation election – news · newspapers · books · scholar · JSTOR (June 2021) (Learn how and when to remove this message) 2017 Brihanmumbai Municipal Corporation election ← 2012 21 Febr...

ラブカ

この項目では、カグラザメ目ラブカ科に属するサメで古代ザメ似のサメについて説明しています。タイトーが発売した通信カラオケの機種については「Lavca」をご覧ください。 ラブカ 保全状況評価[1] LEAST CONCERN(IUCN Red List Ver.3.1 (2001)) 分類 界 : 動物界 Animalia 門 : 脊索動物門 Chordata 綱 : 軟骨魚綱 Chondrichthyes 目 : カグラザメ目 Hexanchiformes 科 : ラブカ科 Chlamydoselachidae ...

 

第一波女性主義

此條目目前正依照其他维基百科上的内容进行翻译。 (2018年10月19日)如果您擅长翻译，並清楚本條目的領域，欢迎协助翻譯、改善或校对本條目。此外，长期闲置、未翻譯或影響閱讀的内容可能会被移除。 《女权辩护：关于政治和道德问题的批评》的扉页（1792年，波士顿）。在这部著作中，玛丽·沃斯通克拉夫特为女性要求更多的权利。 女性主義 女性 女孩 女性气质 历史 �...

 

Opération Sangaris

Opération Sangaris Pendant la troisième guerre civile centrafricaine Logo de l'opération Sangaris[1]. Données clés Localisation République centrafricaine Planifiée par France Objectif Désarmement de la Seleka et des anti-balaka Date 5 décembre 2013 – 31 octobre 2016(2 ans, 10 mois et 26 jours) Participants Général Francisco Soriano (5 décembre 2013 – 17 juin 2014)Général Éric Bellot des Minières (17 juin 2014 – 29 mars 2015)Général Pierre Gillet (2...

Valkenburg Naval Air Base

Airport in Katwijk/LeidenValkenburg Naval Air BaseVliegkamp ValkenburgIATA: LIDICAO: EHVBSummaryAirport typeMilitaryOperator Royal Netherlands NavyLocationKatwijk/LeidenElevation AMSL0 ft / 0 mCoordinates52°10′00″N 004°25′09″E / 52.16667°N 4.41917°E / 52.16667; 4.41917Runways Direction Length Surface ft m 05/23 (closed) 8,006 2,440 Concrete/asphalt 16/34 (closed) 4,920 1,500 Concrete/asphalt Valkenburg Naval Air Base (Dutch: Vliegkamp Va...

 

Schwemmkegel

Schwemmkegel in den französischen Pyrenäen Ein Schwemmkegel, auch Schwemmfächer, Geröllfächer, Sandurs oder alluvialer Fächer genannt, ist ein subaerischer fluviatiler (angeschwemmter) Sedimentkörper, der dort entsteht, wo ein Fließgewässer abrupt an Gefälle verliert, typischerweise beim Austritt aus einem Hochgebiet in tieferliegendes, schwächer reliefiertes Gelände.[1][2][3] Inhaltsverzeichnis 1 Beschreibung 2 Bedeutung für den Menschen 3 Erkennbarkeit a...