[jira] [Commented] (ARROW-7843) [Ruby] MSYS2 packages needed for Gandiva

["Dominic Sisneros (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-7843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17115434#comment-17115434 ] 

Dominic Sisneros commented on ARROW-7843:
-----------------------------------------

Any update on Gandiva support?  I want to try to create a sequel like dataset api for arrow and would like to use gandiva to compile the expressions

> [Ruby] MSYS2 packages needed for Gandiva
> ----------------------------------------
>
>                 Key: ARROW-7843
>                 URL: https://issues.apache.org/jira/browse/ARROW-7843
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Ruby
>    Affects Versions: 0.16.0
>         Environment: windows with rubyinstaller
>            Reporter: Dominic Sisneros
>            Assignee: Kouhei Sutou
>            Priority: Major
>
> {noformat}
> require "gandiva"
> table = Arrow::Table.new(:field1 => Arrow::Int32Array.new([1, 2, 3, 4]),
>                          :field2 => Arrow::Int32Array.new([11, 13, 15, 17]))
> schema = table.schema
> expression1 = schema.build_expression do |record|
>   record.field1 + record.field2
> end
> expression2 = schema.build_expression do |record, context|
>   context.if(record.field1 > record.field2)
>     .then(record.field1 / record.field2)
>     .else(record.field1)
> end
> projector = Gandiva::Projector.new(schema, [expression1, expression2])
> table.each_record_batch do |record_batch|
>   outputs = projector.evaluate(record_batch)
>   puts outputs.collect(&:values)
> end
> C:\Users\Dominic E Sisneros\source\repos\ruby\try_arrow>ruby gandiva_test2.rb
> Traceback (most recent call last):
>         2: from gandiva_test2.rb:1:in `<main>'
>         1: from c:/Ruby27-x64/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require'
> c:/Ruby27-x64/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require': cannot load such file -- gandiva (LoadError)
>         9: from gandiva_test2.rb:1:in `<main>'
>         8: from c:/Ruby27-x64/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:156:in `require'
>         7: from c:/Ruby27-x64/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:168:in `rescue in require'
>         6: from c:/Ruby27-x64/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:168:in `require'
>         5: from c:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/red-gandiva-0.16.0/lib/gandiva.rb:24:in `<top (required)>'
>         4: from c:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/red-gandiva-0.16.0/lib/gandiva.rb:28:in `<module:Gandiva>'
>         3: from c:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/red-gandiva-0.16.0/lib/gandiva/loader.rb:22:in `load'
>         2: from c:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/gobject-introspection-3.4.1/lib/gobject-introspection/loader.rb:25:in `load'
>         1: from c:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/gobject-introspection-3.4.1/lib/gobject-introspection/loader.rb:37:in `load'
> c:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/gobject-introspection-3.4.1/lib/gobject-introspection/loader.rb:37:in `require': Typelib file for namespace 'Gandiva' (any version) not found (GObjectIntrospection::RepositoryError::TypelibNotFound)
> {noformat}



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