{"id":21984683,"url":"https://github.com/mrts/datamapper-cpp","last_synced_at":"2025-04-30T07:28:58.499Z","repository":{"id":4018082,"uuid":"5117481","full_name":"mrts/datamapper-cpp","owner":"mrts","description":"datamapper-cpp is an object-relational mapper for C++ and SQLite","archived":false,"fork":false,"pushed_at":"2020-01-21T21:05:28.000Z","size":27,"stargazers_count":5,"open_issues_count":6,"forks_count":3,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-03-30T14:02:44.303Z","etag":null,"topics":["c-plus-plus","orm","sqlite-orm","sqlite3"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/mrts.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2012-07-20T00:17:06.000Z","updated_at":"2023-12-24T18:41:15.000Z","dependencies_parsed_at":"2022-08-26T06:52:35.409Z","dependency_job_id":null,"html_url":"https://github.com/mrts/datamapper-cpp","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mrts%2Fdatamapper-cpp","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mrts%2Fdatamapper-cpp/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mrts%2Fdatamapper-cpp/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mrts%2Fdatamapper-cpp/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/mrts","download_url":"https://codeload.github.com/mrts/datamapper-cpp/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":251660114,"owners_count":21623191,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["c-plus-plus","orm","sqlite-orm","sqlite3"],"created_at":"2024-11-29T18:10:44.627Z","updated_at":"2025-04-30T07:28:58.478Z","avatar_url":"https://github.com/mrts.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# datamapper-cpp\n\n*datamapper-cpp* is an object-relational mapper for C++ and SQLite. It is a thin layer on top of\n[dbc-cpp](https://github.com/mrts/datamapper-cpp), a lightweight database access library\nfor C++ with JDBC-like *ResultSet* interface. It is stable and has been running in production\nin an industrial system since 2012.\n\n## Features\n\n- Object-database mapping, get objects from database and save objects to database\n- Objects of normal C++ classes work, no need to inherit from anything\n- Developer specifies mapping by providing object field to DB column mapping in a mapping class\n- Repository class that receives the domain object and the mapping as template parameters\n  - takes care of SQL statement generation\n  - takes care of binding fields to SQL statements\n  - takes care of filling fields from resultsets\n  - manages transactions\n  \nIt relies on the following [dbc-cpp](https://github.com/mrts/datamapper-cpp) low-level database operations:\n- query execution\n- prepared statements:\n  - compiled SQL statement objects, parameter binding\n- result sets:\n  - iteration over the results, fetching values\n- dealing with datatypes\n\nAnd finally, dbc-cpp relies on SQLite, the architecture diagram is as follows:\n\n```\n+----------------+\n| datamapper-cpp |\n+----------------+\n|    dbc-cpp     |\n+----------------+\n|     SQLite     |\n+----------------+\n```\n\n## API examples\n\nSee [tests](https://github.com/mrts/datamapper-cpp/blob/master/test/src/main.cpp) for more details:\n\n```c++\n// Create database table.\nPersonRepository::CreateTable();\n\n// Save a single object to database.\nPerson p(-1, \"Ervin\", 38, 1.80);\nPersonRepository::Save(p);\n\n// Save multiple objects.\nPerson::list ps;\nps.push_back(Person(-1, \"Marvin\", 24, 1.65));\nps.push_back(Person(-1, \"Steve\",  32, 2.10));\nPersonRepository::Save(ps);\n\n// Get single object from database.\nPerson p = PersonRepository::Get(1);\np = PersonRepository::GetByField(\"name\", \"Marvin\");\np = PersonRepository::GetByQuery(\"SELECT * FROM person WHERE name LIKE '%vin'\");\n\n// Get multiple objects from database.\nPerson::list ps = PersonRepository::GetAll();\nps = PersonRepository::GetManyByField(\"age\", 32);\nps = PersonRepository::GetManyByQuery(\"SELECT * FROM person WHERE name LIKE '%vin'\");\n\n// Delete data from database.\nPersonRepository::Delete(1);\nPerson marvin(2, \"Marvin\", 24, 1.65);\nPersonRepository::Delete(marvin);\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmrts%2Fdatamapper-cpp","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmrts%2Fdatamapper-cpp","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmrts%2Fdatamapper-cpp/lists"}