cabol / cross_db

Simple and flexible database wrapper for Erlang

CrossDB

Simple and flexible database wrapper for Erlang

Still in development stage!

CrossDB is highly inspired by Ecto and also SumoDB.

See the getting started guide.

Testing

Before to run the tests you have run dialyzer first:

$ rebar3 dialyzer

Then run the tests like so:

$ rebar3 ct

And if you want to check the coverage:

$ rebar3 do ct, cover

Copyright and License

Copyright (c) 2018 Carlos Bolanos

CrossDB source code is licensed under the MIT License.

cross_db's Issues

Implement Couchbase adapter (in separated repository)

Implement PostgreSQL adapter (in separated repository)

Fulfil the open-source checklist

General Items

• It has a github repo
• It has a proper MIT LICENSE file
• It's has a clear and useful README.md
• It's documented using edoc (with examples)
• It's tested
• it has 100% of coverage

Features for First Version

• Basic repo functions: insert, update, delete, get, get_by and all
• Complementary repo functions: insert_all, update_all and delete_all
• Mnesia adapter – implement basic repo functions
• Mnesia adapter – implement complementary repo functions

Exhibition

• There is a blog post about it
• It's shared on social networks
• It's shared on reddit
• It's shared on hacker news with a title like Show HN: description

Examples

• It provides a sample application
• Examples of use are documented in the README or linked from there

Publish

• It's published on Hex.pm

[OTP-21] Deprecation of erlang:get_stacktrace() call

Hi, the new Erlang 21 is deprecating erlang:get_stacktrace() in order to replace with a new feature to retrieve the stacktrace only in the catch clause. Currently I can see this call being used in xdb_lib.erl.

For now it is possible to silence the warning and make the project compilable. Another option would be to pass exception across all the calls between a catch and xdb_lib:raise, or overall exception strategy should be changed.

What do you think should be the best way to go about it?

Implement MySQL adapter (in separated repository)

Transaction test issue

cross_db/src/test/xdb_transaction_test.erl

Line 123 in 365bb3b

{error, _} =

Hello, I'm having troubles understanding why the transaction on that line should fail? insert/update for person looks ok, same for account. Could you explain?

Implement Cassandra adapter (in separated repository)

Get the count of number of element in particular column of the mysql table

Couldn't find the way to get the count of the element in the table, i.e count(*) output.