https://github.com/tonivade/puredbc

Pure Functional Database Connection Layer for Java
https://github.com/tonivade/puredbc

experimental functional-programming java jdbc purefun typesafe

Last synced: 2 months ago
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Pure Functional Database Connection Layer for Java

• Host: GitHub
• URL: https://github.com/tonivade/puredbc
• Owner: tonivade
• License: mit
• Created: 2020-01-10T06:08:00.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2024-09-17T06:02:54.000Z (4 months ago)
• Last Synced: 2024-09-17T08:38:12.444Z (4 months ago)
• Topics: experimental, functional-programming, java, jdbc, purefun, typesafe
• Language: Java
• Homepage:
• Size: 887 KB
• Stars: 5
• Watchers: 3
• Forks: 0
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# PureDBC

Pure Functional Database Connection Layer

## Disclaimer

This project is experimental, so don't try to use in production.

## Objective

Develop a comprehensible and easy to use API:

- High level

- Flexible

- Type safe

- Composable

- Meaningful errors

## Example

```java

  // Table instance

  Test TEST = new Test();

  

  // Query DSL

  SQL createTable = sql(

      "create table if not exists test(",

      "id identity primary key,",

      "name varchar(100))");

  SQL dropTable = sql("drop table if exists test");

  SQL deleteAll = deleteFrom(TEST);

  SQL1 deleteOne = deleteFrom(TEST).where(TEST.ID.eq());

  SQL1 insertRowWithKey = insertInto(TEST).values(TEST.NAME);

  SQL2 insertRow = insertInto(TEST).values(TEST.ID, TEST.NAME);

  SQL2 updateRow = update(TEST).set(TEST.NAME).where(TEST.ID.eq());

  SQL findAll = select(TEST.ID, TEST.NAME).from(TEST);

  SQL count = select(TEST.ID.count().as("elements")).from(TEST);

  SQL1 findOne = select(TEST.ID, TEST.NAME).from(TEST).where(TEST.ID.eq());

  

  // PureDBC DSL

  PureDBC>> program =

    update(createTable)

      .andThen(update(deleteAll))

      .andThen(update(insertRow.bind(1, "toni")))

      .andThen(update(insertRow.bind(2, "pepe")))

      .andThen(queryIterable(findAll, TEST::asTuple));

  

  assertEquals(

      listOf(Tuple.of(1, "toni"), Tuple.of(2, "pepe")), 

      program.unsafeRun(dataSource));

```

## License

Distributed under MIT License