[ARROW-4600] [Ruby] Arrow::DictionaryArray#[] should returns the item in the indices array

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: Ruby
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/15980
• Assignee: Kouhei Sutou
• Reporter: Kenta Murata
• Created: 17/Feb/19 08:53
• Updated: 11/Jan/23 07:35
• Resolved: 06/Jul/20 20:00

Description

Arrow::DictionaryArray#[] should returns the item in the indices array.  However, the current behavior is error like below:

Traceback (most recent call last):
        5: from test.rb:4:in `<main>'
        4: from test.rb:4:in `new'
        3: from /Users/mrkn/src/github.com/apache/arrow/ruby/red-arrow/lib/arrow/dictionary-data-type.rb:103:in `initialize'
        2: from /Users/mrkn/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/gobject-introspection-3.3.1/lib/gobject-introspection/loader.rb:328:in `block in load_constructor_infos'
        1: from /Users/mrkn/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/gobject-introspection-3.3.1/lib/gobject-introspection/loader.rb:317:in `block (2 levels) in load_constructor_infos'
/Users/mrkn/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/gobject-introspection-3.3.1/lib/gobject-introspection/loader.rb:317:in `invoke': invalid argument Array (expect #<Class:0x00007ff1ad9179a8>) (ArgumentError)

test.rb is given below:

require 'arrow'

ary = Arrow::DictionaryArray.new(
  Arrow::DictionaryDataType.new(:int8, %w[foo bar baz], true),
  Arrow::Int8Array.new([0, 1, 0, 1, 2, 1, 2, 0])
)

ary[0]

 

Issue Links

• duplicates: ARROW-8530 [Ruby] Return dictionary value by DictionaryArray#[]
• links to: GitHub Pull Request #7639