Class: NexosisApi::ColumnOptions

Inherits:
Object
  • Object
show all
Defined in:
lib/nexosis_api/column_options.rb

Overview

Class for holding the join options on a column in a view-based join

Since:

  • 1.2.0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(column_name, options_hash) ⇒ ColumnOptions

Create a new option for a join column.

Parameters:

  • column_name (String) —

    the name of the original column from the source dataset

  • options_hash (Hash) —

    additional information about how to process the column in a join

Since:

  • 1.2.0

[View source]

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# File 'lib/nexosis_api/column_options.rb', line 8

def initialize(column_name, options_hash)
  @column_name = column_name
  @join_interval = NexosisApi::TimeInterval.const_get(options_hash['joinInterval'].upcase) unless options_hash['joinInterval'].nil?
  @alias = options_hash['alias']
end

Instance Attribute Details

#alias ⇒ String

Note:

An alias can be used to keep two same-named columns distinct

Optional alias of the column when participating in a join or to merge two distinctly named columns. By default same-named columns on two sides of a join will be merged.

Returns:

  • (String)

Since:

  • 1.2.0


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# File 'lib/nexosis_api/column_options.rb', line 28

def alias
  @alias
end

#column_name ⇒ String

The name of the column on which these options are applied

Returns:

  • (String)

Since:

  • 1.2.0


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# File 'lib/nexosis_api/column_options.rb', line 16

def column_name
  @column_name
end

#join_interval ⇒ NexosisApi::TimeInterval

Note:

not valid outside of join defintion

Optional interval of a time series column being joined to another time series

Returns:

Since:

  • 1.2.0


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# File 'lib/nexosis_api/column_options.rb', line 21

def join_interval
  @join_interval
end

Instance Method Details

#to_hash ⇒ Object

builds a custom hash which will match api requests

Since:

  • 1.2.0

[View source]

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# File 'lib/nexosis_api/column_options.rb', line 31

def to_hash
  hash = { column_name => {} }
  hash[column_name]['join_interval'] = join_interval.to_s unless join_interval.nil?
  hash[column_name]['alias'] = @alias.to_s unless @alias.nil?
  hash
end