Class: AwsSdb::Request::PutAttributes

Inherits:
Template
  • Object
show all
Defined in:
lib/aws_sdb_bare/request.rb

Overview

Add attributes to an item or create a new item whith the given attributes

req = PutAttributes.new({:name => 'my_item'})
req.attributes = {:color => :black, :shape => {:value => :square, :replace => true}}

Note: in this request the value ‘black’ will be added to other color values if they already exist, while the shape value ‘square’ will replace pre existing values of shape the request, adding the :attributes to the params hash in the new method would have the same effect

Note: in the sample above attributes are defined after initializing the request, adding the :attributes to the params hash in the new method would have the same effect

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Template

#initialize, #request, shortcuts, #token=

Constructor Details

This class inherits a constructor from AwsSdb::Request::Template

Instance Attribute Details

#attributes ⇒ Object

Returns the value of attribute attributes.



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# File 'lib/aws_sdb_bare/request.rb', line 220

def attributes
  @attributes
end

Class Method Details

.batch(*requests) ⇒ Object

multiple PutAttributes requests can be batched in one BatchPutAttributes just define the single PutAttributes and then pass them as args to the PutAttributes::batch method and you’ll be returned the batched request. At the moment of writing the maximum number of requests you can batch are 25



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# File 'lib/aws_sdb_bare/request.rb', line 230

def batch(*requests)
  items_params = requests.map { |r| r.send(:expand!) }
  first_request = requests.first.request
   = first_request.
  secret = first_request.secret
  batch_params = {}
  batch_params['DomainName'] ||= first_request.params['DomainName']
  items_params.each_with_index do |params, index|
    params.keys.each do |key|
      batch_params["Item.#{index.to_s + '.' + key}"] = params[key] if key =~ /^ItemName|Attribute/
    end
  end
  BatchPutAttributes.new(batch_params, {:account => , :secret => secret})
end

Instance Method Details

#expand_attributes! ⇒ Object 



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# File 'lib/aws_sdb_bare/request.rb', line 248

def expand_attributes!
  index = 0
  @attributes.keys.each do |attr_name|
    replace = nil
    values = case @attributes[attr_name]
    when Hash
      replace = @attributes[attr_name][:replace].to_s
      @attributes[attr_name][:value].to_s
    else
      @attributes[attr_name].to_s
    end
    values = [values] unless values.is_a?(Array)
    values.each do |value|
      @params["Attribute.#{index}.Replace"] = replace if replace
      @params["Attribute.#{index}.Name"] = attr_name.to_s
      @params["Attribute.#{index}.Value"] = value
      index += 1
    end
  end
end