Class: Gattica::DataPoint

Inherits:
Object
  • Object
show all
Includes:
Convertible
Defined in:
lib/gattica/data_point.rb

Overview

Represents a single “row” of data containing any number of dimensions, metrics

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Convertible

#hash_to_query, #to_h, #to_query, #to_s, #to_xml

Constructor Details

#initialize(xml) ⇒ DataPoint

Parses the XML <entry> element



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# File 'lib/gattica/data_point.rb', line 14

def initialize(xml)
  @xml = xml.to_s
  @id = xml.at('id').inner_html
  @updated = DateTime.parse(xml.at('updated').inner_html)
  @title = xml.at('title').inner_html
  @dimensions = xml.search('dxp:dimension').collect do |dimension|
    { dimension.attributes['name'].split(':').last.to_sym => dimension.attributes['value'].split(':').last }
  end
  @metrics = xml.search('dxp:metric').collect do |metric|
    { metric.attributes['name'].split(':').last.to_sym => metric.attributes['value'].split(':').last.to_i }
  end
end

Instance Attribute Details

#dimensions ⇒ Object (readonly)

Returns the value of attribute dimensions.



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# File 'lib/gattica/data_point.rb', line 11

def dimensions
  @dimensions
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/gattica/data_point.rb', line 11

def id
  @id
end

#metrics ⇒ Object (readonly)

Returns the value of attribute metrics.



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# File 'lib/gattica/data_point.rb', line 11

def metrics
  @metrics
end

#title ⇒ Object (readonly)

Returns the value of attribute title.



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# File 'lib/gattica/data_point.rb', line 11

def title
  @title
end

#updated ⇒ Object (readonly)

Returns the value of attribute updated.



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# File 'lib/gattica/data_point.rb', line 11

def updated
  @updated
end

#xml ⇒ Object (readonly)

Returns the value of attribute xml.



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# File 'lib/gattica/data_point.rb', line 11

def xml
  @xml
end

Instance Method Details

#to_csv(format = :long) ⇒ Object

Outputs in Comma Seperated Values format



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# File 'lib/gattica/data_point.rb', line 29

def to_csv(format = :long)
  output = ''
  columns = []
  
  # only output
  case format
  when :long
    [@id, @updated, @title].each { |c| columns << c }
  end
  
  # output all dimensions
  @dimensions.map {|d| 
    (
      d.values.first if d.length == 1
    )
  }.each { |c| columns << c }
  
  # output all metrics
  @metrics.map {|m|
    (
      m.values.first if d.length == 1
    )
  }.each { |c| columns << c }

  output = CSV.generate_line(columns)      
  return output
end

#to_yaml ⇒ Object 



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# File 'lib/gattica/data_point.rb', line 58

def to_yaml
  { 'id' => @id,
    'updated' => @updated,
    'title' => @title,
    'dimensions' => @dimensions,
    'metrics' => @metrics }.to_yaml
end