Module: Stargate::Operation::RowOperation

Included in:
Client
Defined in:
lib/stargate/operation/row_operation.rb

Constant Summary collapse

Converter = 
{
  '&' => '&',
  '<' => '&lt;',
  '>' => '&gt;',
  "'" => '&apos;',
  '"' => '&quot;'
}

Instance Method Summary collapse

Instance Method Details

#create_row(table_name, name, timestamp = nil, columns = nil) ⇒ Object 



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# File 'lib/stargate/operation/row_operation.rb', line 42

def create_row(table_name, name, timestamp = nil, columns = nil)
  begin
    request = Request::RowRequest.new(table_name, name, timestamp)
    data = []
    if columns
      if columns.instance_of? Array
        data = columns
      elsif columns.instance_of? Hash
        data = [columns]
      else
        raise StandardError, "Only Array or Hash data accepted"
      end
    end

    xml_data = "<?xml version='1.0' encoding='UTF-8' standalone='yes'?><CellSet>"
    xml_data << "<Row key='#{[name].pack('m') rescue ''}'>"
    data.each do |d|
      escape_name = d[:name].gsub(/[&<>'"]/) { |match| Converter[match] }
      xml_data << "<Cell "
      xml_data << "timestamp='#{timestamp}' " if timestamp
      xml_data << "column='#{[escape_name].pack('m') rescue ''}'>"
      xml_data << "#{[d[:value]].pack("m") rescue ''}"
      xml_data << "</Cell>"
    end
    xml_data << "</Row></CellSet>"

    Response::RowResponse.new(post_response(request.create(data.map{|col| col[:name]}), xml_data), :create_row).parse
  rescue Net::ProtocolError => e
    if e.to_s.include?("Table")
      raise TableNotFoundError, "Table '#{table_name}' Not Found"
    elsif e.to_s.include?("Row")
      raise RowNotFoundError, "Row '#{name}' Not Found"
    else
      raise StandardError, "Error encountered while trying to create row: #{e.message}"
    end
  end
end

#delete_row(table_name, name, timestamp = nil, columns = nil) ⇒ Object 



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# File 'lib/stargate/operation/row_operation.rb', line 80

def delete_row(table_name, name, timestamp = nil, columns = nil)
  begin
    request = Request::RowRequest.new(table_name, name, timestamp)
    Response::RowResponse.new(delete_response(request.delete(columns)), :delete_row).parse
  rescue Net::ProtocolError => e
    if e.to_s.include?("Table")
      raise TableNotFoundError, "Table '#{table_name}' Not Found"
    elsif e.to_s.include?("Row")
      raise RowNotFoundError, "Row '#{name}' Not Found"
    end
  end
end

#row_timestamps(table_name, name) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/stargate/operation/row_operation.rb', line 12

def row_timestamps(table_name, name)
  raise NotImplementedError, "Currently not supported in Stargate client"
end

#show_row(table_name, name, timestamp = nil, columns = nil, options = { }) ⇒ Object 



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# File 'lib/stargate/operation/row_operation.rb', line 16

def show_row(table_name, name, timestamp = nil, columns = nil, options = { })
  begin
    options[:version] ||= 1

    request = Request::RowRequest.new(table_name, name, timestamp)
    rows = Response::RowResponse.new(get(request.show(columns, options)), :show_row).parse
    if rows.size == 1
      row = rows.first
      row.table_name = table_name
      row
    else
      rows.each do |row|
        row.table_name = table_name
      end
      rows
    end
  rescue Net::ProtocolError => e
    # TODO: Use better handling instead of this.
    if e.to_s.include?("Table")
      raise TableNotFoundError, "Table '#{table_name}' Not Found"
    elsif e.to_s.include?("404")
      raise RowNotFoundError, "Row '#{name}' Not Found"
    end
  end
end