how many db ops does it cost when accessing a ndb entity with a StructuredProperty?

[saintthor]

are there a more ops for the StructuredProperty?

[Guido van Rossum]

On Sunday, June 24, 2012 5:40:15 AM UTC-7, saintthor wrote:

are there a more ops for the StructuredProperty?

StructuredProperty is essentially just a bunch of properties with funny names. The cost depends on how many indexed properties you have in total in an entity (including in structured properties). So e.g. these two (Flat and Nested) below have the same cost:

class Flat(ndb.Model):

  name = ndb.StringProperty()

  address_line1 = ndb.StringProperty()

  address_line2 = ndb.StringProperty()

and

class Addres(ndb.Model):

  line1 = ndb.StringProperty()

  line2 = ndb.StringProperty()

class Nested(ndb.Model):

  name = ndb.StringProperty()

  address = ndb.StructuredProperty(Address)

[saintthor]

thank you. it is good.

在 2012年6月25日星期一UTC+8上午3时54分56秒，Guido van Rossum写道：