update gemspec and README (#1)

update gemspec and README

CONTRIBUTING.md

@@ -28,21 +28,3 @@ make test
 ```
 make fmt
 ```
-
-# FAQ
-
-## Why Magnus?
-
-As of 2022-07, there are a few popular Ruby bindings for Rust, [Rutie](https://github.com/danielpclark/rutie), [Magnus](https://github.com/matsadler/magnus) and [other alternatives](https://github.com/matsadler/magnus#alternatives). Magnus is picked because its API seems cleaner and it seems more clear about safe vs unsafe. The author of Magnus have a "maybe bias" comparison in this [reddit thread](https://www.reddit.com/r/ruby/comments/uskibb/comment/i98rds4/?utm_source=share&utm_medium=web2x&context=3). It is totally subjective and it should not be large effort if we decides to switch to different Ruby bindings fr Rust in future.
-
-## Why the module name and gem name are different?
-
-The module name `Datafusion` follows the [datafusion](https://github.com/apache/arrow-datafusion) and [datafusion-python](https://github.com/datafusion-contrib/datafusion-python). The gem name `datafusion` [is occupied in rubygems.org at 2016](https://rubygems.org/gems/datafusion), so our gem is called `arrow-datafusion`.
-
-Similarly to the Ruby bindings of Arrow, its gem name is called [red-arrow](https://github.com/apache/arrow/tree/master/ruby/red-arrow) and the module is called `arrow`.
-
-## What is the relationship between Datafusion Ruby and Red Arrow?
-
-Datafusion Ruby is the Ruby bindings of Arrow Datafusion (Rust). Red Arrow is the Ruby bindings of Arrow (C++). To keep Datafusion Ruby simpler, we try to not couple with Red Arrow in core features. If need, we can add additional gems (e.g. red-arrow-datafusion) to support Red Arrow in Datafusion Ruby, similar to how [red-parquet](https://github.com/apache/arrow/blob/2c7c12fd408339817f0322f137d25e9f60a87a26/ruby/red-parquet/red-parquet.gemspec#L44) use red-arrow.
-
-ps: Datafusion Python was coupled with PyArrow. There is a proposal to separate them in medium to long term. For detail, please refer to [Can datafusion-python be used without pyarrow?](https://github.com/datafusion-contrib/datafusion-python/issues/22).

README.md

@@ -1,8 +1,8 @@
 # DataFusion in Ruby
 
-This is a Ruby library that binds to [Apache Arrow](https://arrow.apache.org/) in-memory query engine [DataFusion](https://github.com/apache/arrow-datafusion).
+This is yet another Ruby library that binds to [Apache Arrow](https://arrow.apache.org/) in-memory query engine [DataFusion](https://github.com/apache/arrow-datafusion).
 
-It allows you to build a plan through SQL or a DataFrame API against in-memory data, parquet or CSV files, run it in a multi-threaded environment, and obtain the result back in Ruby.
+This is an alternative to [datafuion-contrib/datafusion-ruby](https://github.com/datafusion-contrib/datafusion-ruby). Please refer to FAQ below.
 
 ## Quick Start
 
@@ -46,4 +46,24 @@ Dataframe
 
 ## Contribution Guide
 
-Please see [Contribution Guide](CONTRIBUTING.md) for information about contributing to DataFusion in Ruby.
+Please see [Contribution Guide](CONTRIBUTING.md).
+
+## FAQ
+
+### Why Magnus?
+
+As of 2022-07, there are a few popular Ruby bindings for Rust, [Rutie](https://github.com/danielpclark/rutie), [Magnus](https://github.com/matsadler/magnus) and [other alternatives](https://github.com/matsadler/magnus#alternatives). Magnus is picked because its API seems cleaner and it seems more clear about safe vs unsafe. The author of Magnus have a "maybe bias" comparison in this [reddit thread](https://www.reddit.com/r/ruby/comments/uskibb/comment/i98rds4/?utm_source=share&utm_medium=web2x&context=3). It is totally subjective and it should not be large effort if we decides to switch to different Ruby bindings fr Rust in future.
+
+### Why the module name and gem name are different?
+
+The module name `Datafusion` follows the [datafusion](https://github.com/apache/arrow-datafusion) and [datafusion-python](https://github.com/datafusion-contrib/datafusion-python). The gem name `datafusion` [is occupied in rubygems.org at 2016](https://rubygems.org/gems/datafusion), so our gem is called `arrow-datafusion`.
+
+Similarly to the Ruby bindings of Arrow, its gem name is called [red-arrow](https://github.com/apache/arrow/tree/master/ruby/red-arrow) and the module is called `arrow`.
+
+### Why another Ruby bindings for Arrow DataFusion?
+
+[datafuion-contrib/datafusion-python](https://github.com/datafusion-contrib/datafusion-python) was the first bindings of Arrow Datafusion (Rust). It was implemented using [pyo3](https://github.com/PyO3/pyo3) for `Rust -> Python`. Besides Python, Datafusion Community also want to have Java and other language bindings. In order to share development resource, [datafuion-contrib/datafusion-c](https://github.com/datafusion-contrib/datafusion-c) is created and be used in [datafuion-contrib/datafusion-ruby](https://github.com/datafusion-contrib/datafusion-ruby). This `Rust -> C -> Ruby/Python/Java/etc` implementation is published as gem "red-datafusion" and couple with "red-arrow".
+
+Around similar time when "red-datafusion" is created, I want to use Arrow DataFusion in Ruby, mainly to query Object Store like S3/GCS, so I create a `Rust -> Ruby` bindings using [Magnus](https://github.com/matsadler/magnus). So I just keep this `Rust -> Ruby` implementation as an alternative and publish it as gem `arrow-datafusion`. To keep it simple, "arrow-datafusion" does not couple with "red-arrow" at the moment.
+
+ps: Datafusion Python was coupled with PyArrow. There is a proposal to separate them in medium to long term. For detail, please refer to [Can datafusion-python be used without pyarrow?](https://github.com/datafusion-contrib/datafusion-python/issues/22).

arrow-datafusion.gemspec

@@ -3,12 +3,12 @@ require_relative "lib/datafusion/version"
 Gem::Specification.new do |spec|
   spec.name = "arrow-datafusion"
   spec.version = Datafusion::VERSION
-  spec.authors = ["Datafusion Contrib Developers"]
-  spec.homepage = "https://github.com/datafusion-contrib/datafusion-ruby"
+  spec.authors = ["jychen7"]
+  spec.homepage = "https://github.com/jychen7/arrow-datafusion-ruby"
 
-  spec.summary = "Ruby bindings of Apache Arrow Datafusion"
+  spec.summary = "yet another Ruby bindings of Apache Arrow Datafusion"
   spec.description =
-    "Ruby bindings of Apache Arrow Datafusion"
+    "yet another Ruby bindings of Apache Arrow Datafusion"
   spec.license = "Apache-2.0"
 
   spec.files = ["README.md", "#{spec.name}.gemspec", "LICENSE"]

lib/datafusion/version.rb

@@ -1,3 +1,3 @@
 module Datafusion
-  VERSION = "0.0.1"
+  VERSION = "0.0.2"
 end