Class: Google::Apis::DatastoreV1::Sum

Inherits:

Object

• Object
• Google::Apis::DatastoreV1::Sum

Includes:

Core::Hashable, Core::JsonObjectSupport

Defined in:

lib/google/apis/datastore_v1/classes.rb,
lib/google/apis/datastore_v1/representations.rb,
lib/google/apis/datastore_v1/representations.rb more...

Overview

Sum of the values of the requested property. * Only numeric values will be aggregated. All non-numeric values including NULL are skipped. * If the aggregated values contain NaN, returns NaN. * If the aggregated value set is empty, returns 0. * Returns a 64-bit integer if the sum result is an integer value and does not overflow. Otherwise, the result is returned as a double. Note that even if all the aggregated values are integers, the result is returned as a double if it cannot fit within a 64-bit signed integer. When this occurs, the returned value will lose precision. * When underflow occurs, floating-point aggregation is non-deterministic. This means that running the same query repeatedly without any changes to the underlying values could produce slightly different results each time. In those cases, values should be stored as integers over floating-point numbers.

Instance Attribute Summary

• #property ⇒ Google::Apis::DatastoreV1::PropertyReference

  A reference to a property relative to the kind expressions.

Instance Method Summary

• #initialize(**args) ⇒ Sum constructor

  A new instance of Sum.

• #update!(**args) ⇒ Object

  Update properties of this object.

Constructor Details

#initialize(**args) ⇒ Sum

Returns a new instance of Sum.

# File 'lib/google/apis/datastore_v1/classes.rb', line 2557

def initialize(**args)
   update!(**args)
end

Instance Attribute Details

#property ⇒ Google::Apis::DatastoreV1::PropertyReference

A reference to a property relative to the kind expressions. Corresponds to the JSON property property

Returns:

• (Google::Apis::DatastoreV1::PropertyReference)

# File 'lib/google/apis/datastore_v1/classes.rb', line 2555

def property
  @property
end

Instance Method Details

#update!(**args) ⇒ Object

Update properties of this object

# File 'lib/google/apis/datastore_v1/classes.rb', line 2562

def update!(**args)
  @property = args[:property] if args.key?(:property)
end