{"id":74,"date":"2025-08-19T20:17:23","date_gmt":"2025-08-19T20:17:23","guid":{"rendered":"https:\/\/delphimasters.com.br\/blog\/?p=74"},"modified":"2025-08-19T20:17:48","modified_gmt":"2025-08-19T20:17:48","slug":"orm-com-repository-no-delphi","status":"publish","type":"post","link":"https:\/\/delphimasters.com.br\/blog\/orm-com-repository-no-delphi\/","title":{"rendered":"ORM com Repository no Delphi"},"content":{"rendered":"<div data-breakout=\"normal\">\n<h1>ORM com Repository no Delphi<\/h1>\n<h2>Introdu\u00e7\u00e3o<\/h2>\n<p>Bem-vindo ao blog! \ud83d\udc4b<br \/>\nHoje vamos explorar um tema muito importante para quem trabalha com desenvolvimento de software: <strong>ORM (Object-Relational Mapping)<\/strong> em conjunto com o <strong>padr\u00e3o Repository<\/strong>.<\/p>\n<p>Se voc\u00ea j\u00e1 se perguntou como organizar melhor o acesso a dados da sua aplica\u00e7\u00e3o ou como deixar o c\u00f3digo mais limpo e f\u00e1cil de manter, este post \u00e9 para voc\u00ea.<\/p>\n<p>Aqui veremos:<\/p>\n<ul>\n<li>Como o <strong>ORM<\/strong> transforma tabelas em objetos e facilita a manipula\u00e7\u00e3o dos dados.<\/li>\n<li>Como o <strong>Repository<\/strong> atua como uma camada intermedi\u00e1ria, separando o acesso a dados da l\u00f3gica de neg\u00f3cios.<\/li>\n<\/ul>\n<p>Juntos, esses dois conceitos ajudam a criar um c\u00f3digo mais <strong>robusto, organizado e escal\u00e1vel<\/strong>. Vamos l\u00e1? \ud83d\ude80<\/p>\n<h2>Criando a Tabela<\/h2>\n<p>Para o exemplo, utilizaremos o <strong>Firebird 3.0<\/strong> e criaremos uma tabela simples de cadastro de clientes:<\/p>\n<pre><code class=\"language-sql\">CREATE TABLE PESSOAS (\r\n    ID     INTEGER NOT NULL,\r\n    NOME   VARCHAR(100),\r\n    EMAIL  VARCHAR(100)\r\n);\r\n\r\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-75\" src=\"https:\/\/delphimasters.com.br\/blog\/wp-content\/uploads\/2025\/08\/Screenshot_1-300x244.png\" alt=\"\" width=\"300\" height=\"244\" srcset=\"https:\/\/delphimasters.com.br\/blog\/wp-content\/uploads\/2025\/08\/Screenshot_1-300x244.png 300w, https:\/\/delphimasters.com.br\/blog\/wp-content\/uploads\/2025\/08\/Screenshot_1.png 370w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\r\n<\/code><\/pre>\n<p>Com isso, j\u00e1 temos a estrutura b\u00e1sica de dados para trabalhar.<\/p>\n<h2>Criando a Classe Cliente (ORM)<\/h2>\n<p>A seguir, criamos uma classe que representa a entidade <strong>Cliente<\/strong>, fazendo o mapeamento entre os campos da tabela e propriedades no Delphi:<\/p>\n<pre><code class=\"language-delphi\">unit cCliente;\r\n\r\ninterface\r\n\r\ntype\r\n  TClienteORM = class\r\n  private\r\n    fid    : integer;\r\n    fnome  : string;\r\n    femail : string;\r\n  public\r\n    property Id    : integer read fid write fid;\r\n    property Nome  : string  read fnome write fnome;\r\n    property Email : string  read femail write femail;\r\n  end;\r\n\r\nimplementation\r\n\r\nend.\r\n<\/code><\/pre>\n<h2>Criando o Repository<\/h2>\n<p>O padr\u00e3o <strong>Repository<\/strong> \u00e9 usado para centralizar as opera\u00e7\u00f5es de acesso ao banco de dados.<br \/>\nEle funciona como um &#8220;gerente&#8221; que lida com as opera\u00e7\u00f5es de leitura e escrita, mantendo a l\u00f3gica de neg\u00f3cios isolada.<\/p>\n<pre><code class=\"language-delphi\">unit repCliente;\r\n\r\ninterface\r\n\r\nuses\r\n  FireDAC.Comp.Client, FireDAC.DApt, FireDAC.Stan.Param,\r\n  System.SysUtils, System.Generics.Collections, cCliente;\r\n\r\ntype\r\n  TClienteRepository = class\r\n  private\r\n    FConnection: TFDConnection;\r\n  public\r\n    constructor Create(AConnection: TFDConnection);\r\n\r\n    function BuscaPorId(AId: Integer): TClienteORM;\r\n    function BuscaTodos: TObjectList&lt;TClienteORM&gt;;\r\n\r\n    procedure Inserir(ACliente: TClienteORM);\r\n    procedure Atualizar(ACliente: TClienteORM);\r\n    procedure Excluir(AId: Integer);\r\n  end;\r\n\r\nimplementation\r\n\r\n{ Implementa\u00e7\u00e3o dos m\u00e9todos do Repository }\r\n<\/code><\/pre>\n<h3>Por que usar Repository?<\/h3>\n<ul>\n<li>Evita SQL espalhado pelo c\u00f3digo.<\/li>\n<li>Centraliza a manipula\u00e7\u00e3o de dados.<\/li>\n<li>Facilita manuten\u00e7\u00e3o e testes.<\/li>\n<li>Permite trocar de banco de dados futuramente sem grandes impactos.<\/li>\n<\/ul>\n<h2>Conectando ao Formul\u00e1rio<\/h2>\n<p>Agora que temos nossa <strong>classe ORM<\/strong> e o <strong>Repository<\/strong>, podemos conectar tudo \u00e0 interface do usu\u00e1rio.<\/p>\n<p>No formul\u00e1rio, declare as vari\u00e1veis:<\/p>\n<pre><code class=\"language-delphi\">Cliente           : TClienteORM;\r\nClienteRepository : TClienteRepository;\r\n<\/code><\/pre>\n<h3>Exemplo de uso em bot\u00f5es:<\/h3>\n<p><strong>Buscar Cliente<\/strong><\/p>\n<pre><code class=\"language-delphi\">var\r\n  IdCliente: Integer;\r\nbegin\r\n  ClienteRepository := TClienteRepository.Create(FDConnection1);\r\n  Cliente := TClienteORM.Create;\r\n  try\r\n    IdCliente := StrToInt(EditCodigo.Text);\r\n\r\n    if IdCliente &gt; 0 then\r\n    begin\r\n      Cliente := ClienteRepository.BuscaPorId(IdCliente);\r\n      if Assigned(Cliente) then\r\n      begin\r\n        EditNome.Text  := Cliente.Nome;\r\n        EditEmail.Text := Cliente.Email;\r\n      end\r\n      else\r\n        ShowMessage('Cliente n\u00e3o encontrado na base.');\r\n    end\r\n    else\r\n      ShowMessage('Informe um ID v\u00e1lido.');\r\n  finally\r\n    Cliente.Free;\r\n    ClienteRepository.Free;\r\n  end;\r\nend;\r\n<\/code><\/pre>\n<p><strong>Inserir Cliente<\/strong><\/p>\n<pre><code class=\"language-delphi\">Cliente := TClienteORM.Create;\r\nClienteRepository := TClienteRepository.Create(FDConnection1);\r\ntry\r\n  Cliente.Nome  := EditNome.Text;\r\n  Cliente.Email := EditEmail.Text;\r\n\r\n  ClienteRepository.Inserir(Cliente);\r\n  EditCodigo.Text := IntToStr(Cliente.Id);\r\n\r\n  ShowMessage('Inclu\u00eddo com sucesso!');\r\nfinally\r\n  Cliente.Free;\r\n  ClienteRepository.Free;\r\nend;\r\n<\/code><\/pre>\n<p><strong>Alterar Cliente<\/strong><\/p>\n<pre><code class=\"language-delphi\">Cliente := TClienteORM.Create;\r\nClienteRepository := TClienteRepository.Create(FDConnection1);\r\ntry\r\n  Cliente.Id    := StrToInt(EditCodigo.Text);\r\n  Cliente.Nome  := EditNome.Text;\r\n  Cliente.Email := EditEmail.Text;\r\n\r\n  ClienteRepository.Atualizar(Cliente);\r\n  ShowMessage('Alterado com sucesso!');\r\nfinally\r\n  Cliente.Free;\r\n  ClienteRepository.Free;\r\nend;\r\n<\/code><\/pre>\n<p><strong>Excluir Cliente<\/strong><\/p>\n<pre><code class=\"language-delphi\">var\r\n  IdCliente: Integer;\r\nbegin\r\n  ClienteRepository := TClienteRepository.Create(FDConnection1);\r\n  try\r\n    IdCliente := StrToInt(EditCodigo.Text);\r\n    ClienteRepository.Excluir(IdCliente);\r\n\r\n    EditNome.Clear;\r\n    EditEmail.Clear;\r\n    EditCodigo.Clear;\r\n\r\n    ShowMessage('Exclu\u00eddo com sucesso!');\r\n  finally\r\n    ClienteRepository.Free;\r\n  end;\r\nend;\r\n<\/code><\/pre>\n<h2>Conclus\u00e3o<\/h2>\n<p>Neste artigo, vimos como unir <strong>ORM<\/strong> e <strong>Repository<\/strong> em Delphi para deixar o acesso a dados mais organizado.<\/p>\n<ul>\n<li>O <strong>ORM<\/strong> converte tabelas em objetos, simplificando a manipula\u00e7\u00e3o de informa\u00e7\u00f5es.<\/li>\n<li>O <strong>Repository<\/strong> centraliza as opera\u00e7\u00f5es de CRUD, mantendo o c\u00f3digo mais limpo, reutiliz\u00e1vel e f\u00e1cil de manter.<\/li>\n<\/ul>\n<p>Essa combina\u00e7\u00e3o torna o sistema mais <strong>flex\u00edvel, escal\u00e1vel e preparado para mudan\u00e7as futuras<\/strong>.<\/p>\n<p>Agora \u00e9 sua vez: aplique esses conceitos nos seus projetos Delphi!<br \/>\nSe quiser, compartilhe sua experi\u00eancia nos coment\u00e1rios. At\u00e9 a pr\u00f3xima! \ud83d\ude80<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<p><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f4e3.svg\" alt=\"\ud83d\udce3\" \/>\u00a0<strong data-start=\"107\" data-end=\"179\">Se voc\u00ea gostou, comente, curta e compartilhe com outros devs Delphi!<\/strong><br data-start=\"179\" data-end=\"182\" \/><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f4ac.svg\" alt=\"\ud83d\udcac\" \/>\u00a0Sua intera\u00e7\u00e3o ajuda nossa comunidade a crescer ainda mais!<\/p>\n<p>&nbsp;<\/p>\n<h3 data-start=\"157\" data-end=\"193\"><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f517.svg\" alt=\"\ud83d\udd17\" \/>\u00a0<strong data-start=\"164\" data-end=\"191\">Grupo Geral no WhatsApp<\/strong><\/h3>\n<p data-start=\"194\" data-end=\"458\"><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f4ac.svg\" alt=\"\ud83d\udcac\" \/>\u00a0<strong data-start=\"197\" data-end=\"279\">Participe do Delphi Masters e conecte-se com desenvolvedores de todo o Brasil!<\/strong><br data-start=\"279\" data-end=\"282\" \/>Discuss\u00f5es, d\u00favidas, dicas e muita troca de conhecimento.<br data-start=\"339\" data-end=\"342\" \/><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f449.svg\" alt=\"\ud83d\udc49\" \/>\u00a0Entre agora:\u00a0<a class=\"\" href=\"https:\/\/chat.whatsapp.com\/HPwXGINRiDS65VgRDLS2lD\" target=\"_new\" rel=\"noopener\" data-start=\"358\" data-end=\"458\">https:\/\/chat.whatsapp.com\/HPwXGINRiDS65VgRDLS2lD<\/a><\/p>\n<h3 data-start=\"1357\" data-end=\"1401\"><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f517.svg\" alt=\"\ud83d\udd17\" \/>\u00a0<strong data-start=\"1364\" data-end=\"1399\">Canal do YouTube Delphi Masters<\/strong><\/h3>\n<p data-start=\"1402\" data-end=\"1626\"><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f3a5.svg\" alt=\"\ud83c\udfa5\" \/>\u00a0<strong data-start=\"1405\" data-end=\"1478\">Conte\u00fado t\u00e9cnico, lives, tutoriais e entrevistas com feras do Delphi!<\/strong><br data-start=\"1478\" data-end=\"1481\" \/>Se inscreva e ative o sininho para n\u00e3o perder nada.<br data-start=\"1532\" data-end=\"1535\" \/><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f449.svg\" alt=\"\ud83d\udc49\" \/>\u00a0Acesse:\u00a0<a class=\"\" href=\"https:\/\/www.youtube.com\/@delphimasters\" target=\"_new\" rel=\"noopener\" data-start=\"1546\" data-end=\"1626\">https:\/\/www.youtube.com\/@delphimasters<\/a><\/p>\n<h3 data-start=\"1115\" data-end=\"1149\"><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f517.svg\" alt=\"\ud83d\udd17\" \/>\u00a0<strong data-start=\"1122\" data-end=\"1147\">Comunidade no DISCORD<\/strong><\/h3>\n<p data-start=\"1150\" data-end=\"1350\"><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f3a7.svg\" alt=\"\ud83c\udfa7\" \/>\u00a0<strong data-start=\"1153\" data-end=\"1204\">Bate-papo em tempo real com a galera do Delphi!<\/strong><br data-start=\"1204\" data-end=\"1207\" \/>Canais organizados por temas, suporte e muito networking.<br data-start=\"1264\" data-end=\"1267\" \/><img decoding=\"async\" class=\"emoji\" role=\"img\" draggable=\"false\" src=\"https:\/\/s.w.org\/images\/core\/emoji\/16.0.1\/svg\/1f449.svg\" alt=\"\ud83d\udc49\" \/>\u00a0Entre no Discord:\u00a0<a class=\"\" href=\"https:\/\/discord.gg\/pq2YvPZ7Z2\" target=\"_new\" rel=\"noopener\" data-start=\"1288\" data-end=\"1350\">https:\/\/discord.gg\/pq2YvPZ7Z2<\/a><\/p>\n<p data-start=\"1150\" data-end=\"1350\">Edi\u00e7\u00e3o\/Revis\u00e3o:<br \/>\nDi\u00f3genes Henrique<br \/>\nDelphi Masters<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ORM com Repository no Delphi Introdu\u00e7\u00e3o Bem-vindo ao blog! \ud83d\udc4b Hoje vamos explorar um tema muito importante para quem trabalha com desenvolvimento de software: ORM (Object-Relational Mapping) em conjunto com o padr\u00e3o Repository. Se voc\u00ea j\u00e1 se perguntou como organizar melhor o acesso a dados da sua aplica\u00e7\u00e3o ou como deixar o c\u00f3digo mais limpo [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":78,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[24,16,7,2,9,12,11,10,19,15,17,21],"class_list":["post-74","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-canaldev","tag-carreiradev","tag-concorrencia","tag-delphi","tag-delphibrasil","tag-delphilovers","tag-desenvolvedordelphi","tag-devbrasil","tag-grupodedevs","tag-inovacao","tag-oportunidadesti","tag-tutoriaisdelphi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ORM com Repository no Delphi - Delphi Masters-BLOG<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/delphimasters.com.br\/blog\/orm-com-repository-no-delphi\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ORM com Repository no Delphi - Delphi Masters-BLOG\" \/>\n<meta property=\"og:description\" content=\"ORM com Repository no Delphi Introdu\u00e7\u00e3o Bem-vindo ao blog! \ud83d\udc4b Hoje vamos explorar um tema muito importante para quem trabalha com desenvolvimento de software: ORM (Object-Relational Mapping) em conjunto com o padr\u00e3o Repository. 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