class AWS::SimpleDB::DomainMetadata

SimpleDB can report on the amount of data stored in a domain, the number of items, etc.

@example

sdb = SimpleDB.new
sdb.domains['mydomain'].metadata.to_h

# the hash returned above might look like:
{
  :timestamp => 1300841880,
  :attribute_names_size_bytes => 12,
  :item_count => 1,
  :attribute_value_count => 6,
  :attribute_values_size_bytes => 25,
  :item_names_size_bytes => 3,
  :attribute_name_count => 3
}

Constants

ATTRIBUTES: @private

Attributes

domain[R]

@return [Domain] The domain this metadata is describing.

Public Class Methods

new(domain, options = {}) click to toggle source

@param [Domain] The domain to fetch metadata for. @return [DomainMetadata]

# File lib/aws/simple_db/domain_metadata.rb, line 53
def initialize domain, options = {}
  @domain = domain
  super
end

Public Instance Methods

attribute_name_count() click to toggle source

@return [Integer] The number of unique attribute names in the

{#domain}.

# File lib/aws/simple_db/domain_metadata.rb, line 74
def attribute_name_count
  self.to_h[:attribute_name_count]
end

attribute_names_size_bytes() click to toggle source

@return [Integer] The total size of all unique attribute names,

in bytes.

# File lib/aws/simple_db/domain_metadata.rb, line 80
def attribute_names_size_bytes
  self.to_h[:attribute_names_size_bytes]
end

attribute_value_count() click to toggle source

@return [Integer] The number of all attribute name/value pairs in

the {#domain}.

# File lib/aws/simple_db/domain_metadata.rb, line 86
def attribute_value_count
  self.to_h[:attribute_value_count]
end

attribute_values_size_bytes() click to toggle source

@return [Integer] The total size of all attribute values, in bytes.

# File lib/aws/simple_db/domain_metadata.rb, line 91
def attribute_values_size_bytes
  self.to_h[:attribute_values_size_bytes]
end

item_count() click to toggle source

@return [Integer] The number of all items in the {domain}.

# File lib/aws/simple_db/domain_metadata.rb, line 62
def item_count
  self.to_h[:item_count]
end

item_names_size_bytes() click to toggle source

@return [Integer] The total size of all item names in the {domain},

in bytes.

# File lib/aws/simple_db/domain_metadata.rb, line 68
def item_names_size_bytes
  self.to_h[:item_names_size_bytes]
end

timestamp() click to toggle source

@return [Integer] The data and time when metadata was calculated

in Epoch (UNIX) time.

# File lib/aws/simple_db/domain_metadata.rb, line 97
def timestamp
  self.to_h[:timestamp]
end

to_h() click to toggle source

@return [Hash] A hash of all of the metadata attributes for

this {#domain}.

# File lib/aws/simple_db/domain_metadata.rb, line 103
def to_h
  meta = client.domain_metadata(:domain_name => domain.name)
  ATTRIBUTES.inject({}) {|h,attr| h[attr] = meta.send(attr); h }
end