[Developers] query /type/datetime properties

[Augusto Callejas]

hi, i sent this out a while ago, but didn't get a response.
any ideas on datetimes?

thanks,
augusto.


------ Forwarded Message
From: Augusto Callejas <acallejas at appliedminds.com>
Reply-To: "For discussions about MQL, Freebase API and apps built on
Freebase" <developers at freebase.com>
Date: Mon, 23 Jun 2008 16:29:59 -0700
To: "For discussions about MQL, Freebase API and apps built on Freebase"
<developers at freebase.com>
Conversation: query /type/datetime properties
Subject: [Developers] query /type/datetime properties

hi-

i'm querying for properties of a certain type that have
changed after a specified timestamp.  the query is below,
followed by the result:

=======
[
  {
    "/common/topic/alias" : [
      {
        "lang" : "/lang/en",
        "link" : {
          "timestamp" : null,
          "timestamp>=" : "2008-06-23T16:12:55"
        },
        "optional" : true,
        "value" : null
      }
    ],
    "/type/object/guid" : null,
    "/type/object/name" : [
      {
        "lang" : "/lang/en",
        "link" : {
          "timestamp" : null,
          "timestamp>=" : "2008-06-23T16:12:55"
        },
        "optional" : true,
        "value" : null
      }
    ],
    "timestamp" : null,
    "type" : "/user/augusto/default_domain/type2"
  }
]
=======
[
  {
    "/common/topic/alias" : [],
    "/type/object/guid" : "#9202a8c04000641f80000000086e0ed9",
    "/type/object/name" : [
      {
        "lang" : "/lang/en",
        "link" : {
          "timestamp" : "2008-06-23T21:04:43.0001Z"
        },
        "value" : "apple"
      }
    ],
    "timestamp" : "2008-06-23T21:04:43.0000Z",
    "type" : "/user/augusto/default_domain/type2"
  },
  {
    "/common/topic/alias" : [],
    "/type/object/guid" : "#9202a8c04000641f80000000086e46eb",
    "/type/object/name" : [
      {
        "lang" : "/lang/en",
        "link" : {
          "timestamp" : "2008-06-23T23:13:31.0001Z"
        },
        "value" : "banana"
      }
    ],
    "timestamp" : "2008-06-23T23:13:31.0000Z",
    "type" : "/user/augusto/default_domain/type2"
  }
]
=======

from the documentation:

http://www.freebase.com/view/guid/9202a8c04000641f800000000544e143#id2610086

it says dates without timezone, like in my query "2008-06-23T16:12:55":

 "If no timezone is specified, then then the /type/datetime value is assumed
  to be a local time in an unknown timezone."

its confusing because when you say "local time" it implies the local
timezone, yet it says an unknown timezone.  i thought my query's time
would default to the local timezone (-700 for me), but then the first
result above wouldn't pass the time constraint:

 "2008-06-23T21:04:43.0001Z" >= "2008-06-23T16:12:55"

but if it was interpreting "2008-06-23T16:12:55"'s timezone as UTC, then
it would make sense.

basically, does "2008-06-23T16:12:55" default the timezone to UTC?

thanks,
augusto.


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