Public Query
Interface Version 1.0
Committee Specification Draft 01
03 December 2015
Specification URIs
This version:
http://docs.oasis-open.org/coel/PQI/v1.0/csd01/PQI-v1.0-csd01.docx (Authoritative)
http://docs.oasis-open.org/coel/PQI/v1.0/csd01/PQI-v1.0-csd01.html
http://docs.oasis-open.org/coel/PQI/v1.0/csd01/PQI-v1.0-csd01.pdf
Previous version:
N/A
Latest version:
http://docs.oasis-open.org/coel/PQI/v1.0/PQI-v1.0.docx (Authoritative)
http://docs.oasis-open.org/coel/PQI/v1.0/PQI-v1.0.html
http://docs.oasis-open.org/coel/PQI/v1.0/PQI-v1.0.pdf
Technical Committee:
OASIS Classification of
Everyday Living (COEL) TC
Chairs:
David Snelling (David.Snelling@UK.Fujitsu.com),
Fujitsu Limited
Joss Langford (joss@activinsights.co.uk), Activinsights Ltd
Editor:
David Snelling (David.Snelling@UK.Fujitsu.com),
Fujitsu Limited
Related work:
This specification is related to:
·
Classification of Everyday Living Version 1.0. Edited by
Joss Langford. Latest version: http://docs.oasis-open.org/coel/COEL/v1.0/COEL-v1.0.html.
·
Roles, Principles, and Ecosystem Version 1.0. Edited by
Matthew Reed. Latest version: http://docs.oasis-open.org/coel/RPE/v1.0/RPE-v1.0.html.
·
Behavioural Atom Protocol Version 1.0. Edited by Joss
Langford. Latest version: http://docs.oasis-open.org/coel/BAP/v1.0/BAP-v1.0.html.
·
Minimal Management Interface Version 1.0. Edited by David
Snelling. Latest version: http://docs.oasis-open.org/coel/MMI/v1.0/MMI-v1.0.html.
·
Identity Authority Interface Version 1.0. Edited by Paul
Bruton. Latest version: http://docs.oasis-open.org/coel/IDA/v1.0/IDA-v1.0.html.
Abstract:
This document describes the minimum
synchronous query interface that will be provided by a Data Engine. Individual
implementations of a Data Engine can provide further capabilities.
Status:
This document was last revised or approved by the OASIS
Classification of Everyday Living (COEL) TC on the above date. The level of
approval is also listed above. Check the “Latest version” location noted above
for possible later revisions of this document. Any other numbered Versions and
other technical work produced by the Technical Committee (TC) are listed at https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=coel#technical.
TC members should send comments on this specification to the
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For information on whether any patents have been disclosed
that may be essential to implementing this specification, and any offers of
patent licensing terms, please refer to the Intellectual Property Rights
section of the TC’s web page (https://www.oasis-open.org/committees/coel/ipr.php).
Citation format:
When referencing this specification the following citation
format should be used:
[COEL-PQI-v1.0]
Public Query Interface Version 1.0. Edited by David
Snelling. 03 December 2015. OASIS Committee Specification Draft 01. http://docs.oasis-open.org/coel/PQI/v1.0/csd01/PQI-v1.0-csd01.html. Latest version: http://docs.oasis-open.org/coel/PQI/v1.0/PQI-v1.0.html.
Copyright © OASIS Open 2015. All Rights Reserved.
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1 Introduction. 5
1.1 Terminology. 5
1.2 Normative References. 5
1.3 Non-Normative
References. 5
2 Interface Specification. 6
2.1 Authentication
and Authorisation. 6
2.2 Query Operation. 6
2.2.1 Request 6
2.2.2 Response. 9
2.3 Segment Data. 10
2.3.1 Request 10
2.3.2 Response. 10
3 Conformance. 12
Appendix A.
Acknowledgments. 13
Appendix B. Revision
History. 14
This document describes the minimum
synchronous query interface that MUST be provided by a Data Engine. Individual
implementations of a Data Engine can provide further capabilities.
The key words “MUST”, “MUST NOT”,
“REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”,
and “OPTIONAL” in this document are to be interpreted as described in [RFC2119].
[RFC2119] Bradner, S., “Key words for use in RFCs to Indicate
Requirement Levels”, BCP 14, RFC 2119, March 1997. http://www.ietf.org/rfc/rfc2119.txt.
[RFC4627] D.
Crockford, The application/json Media Type for JavaScript Object Notation
(JSON), July 2006, http://www.ietf.org/rfc/rfc4627.txt.
[COEL_RPE-1.0] Roles, Principles, and Ecosystem Version 1.0. Latest
version: http://docs.oasis-open.org/coel/RPE/v1.0/RPE-v1.0.docx.
[COEL_IDA-1.0] Identity Authority
Interface Version 1.0. Latest version: http://docs.oasis-open.org/coel/IDA/v1.0/IDA-v1.0.docx
[COEL_BAP-1.0] Behavioural Atom
Protocol Version 1.0. Latest version: http://docs.oasis-open.org/coel/BAP/v1.0/BAP-v1.0.docx
1.3 Non-Normative References
[Coelition] http://www.coelition.org
[Data to Life] Reed, M. &
Langford, J. (2013). Data to Life. Coelition, London. ISBN 978-0957609402
The query interface SHALL have one method
POST. The body of the request SHALL contain the query. The response to a
successful query SHALL be a list of JSON Atoms that are the results of the
query OR the result of an aggregation.
To access the Query API, callers need API
Credentials with two components:
·
A userid to identify the caller.
·
A password to authenticate the caller.
HTTP basic authentication SHALL be used to
authenticate calls to the API. Passwords SHOULD be 64 bytes in length and MUST
be supplied as an ASCII string. This MUST be prefixed with the userid followed
by a colon to form the token passed in the HTTP Authorisation Header.
Example:
"9abf5386-2ac6-4e61-abc4-6b809a85d6cb:J1dOeWJJOkd3akhnSn4ma007M
DtUMVAxISgyOn9jI2U9NHNdRi4hfiw9c2I8PURcVltNMWQkamsrfGR4T24vKA=="
If the userid is unrecognized, or the wrong
password is supplied a HTTP status code 401 Invalid username or password
SHALL be returned.
2.2 Query Operation
Initiate the query contained in the body of
the request and return the result of the query.
|
API
|
Description
|
|
POST query
|
Send a query to the Data Engine and wait for the
response containing the result.
|
|
Parameter Name
|
Description
|
Type
|
|
ConsumerID
|
Pseudonymous Key representing the requesting Consumer
who is the subject of the query (REQUIRED).
|
String: Format defined in
[COEL_IDA-1.0].
|
|
OperatorID
|
Pseudonymous Key representing the consumer’s Operator
(OPTIONAL).
|
String: Format defined in [COEL_IDA-1.0].
|
|
TimeWindow
|
Represents the time window(s) for the query
(OPTIONAL).
|
Object: Composed of StartTime,
EndTime, and BlockBy.
|
|
StartTime
|
Start of time interval to be included in the query.
Time in seconds since 1/1/1970 UTC (OPTIONAL). If absent, 1/1/1970 is
assumed. Atoms will be included if their start time comes after this time.
|
Integer: Seconds since 1/1/1970 UTC.
|
|
EndTime
|
End of time interval to be included in the query. Time
in seconds since 1/1/1970 UTC (OPTIONAL). If absent, infinity is assumed.
Atom will be excluded if their start time comes after this time.
|
Integer: Seconds since 1/1/1970 UTC.
|
|
BlockBy
|
If present the number of seconds in each block
returned (OPTIONAL). If absent all Atoms in the time window are returned as a
single block or used in the aggregation computation.
|
Integer: Block length in seconds.
|
|
Query
|
The query for this request. (OPTIONAL)
|
JSON Object: Format defined in Section
2.2.1.1
|
Media type:
application/json, text/json
The query object has the following JSON
structure.
·
Query: (OPTIONAL)
o Filter:
§ ColName: column name
§ Comparator: one of "=", ">",
">=", "<", "<=", "!="
§ Value: comparison value
o AND (list of length > 0) (OPTIONAL)
§ Filter, AND, OR
o OR (list of length > 0) (OPTIONAL)
§ Filter, AND, OR
o NOT (OPTIONAL)
§ Filter, AND, OR
o Aggregate (OPTIONAL)
§ Columns (list)
·
ColName: column name, see below
·
Aggregator: aggregator function, one
of AVG, SUM, COUNT, MIN, MAX, STDDEV
§ GroupBy (list) (OPTIONAL)
·
ColName: column name
o Project (OPTIONAL)
§ Include (list)
·
ColName: column name
§ Exclude (list)
·
ColName: column name
The following table contains the column
names that MUST be used in in queries and that the Data Engine has used to map
the corresponding tag values from the Atoms posted.
|
Name
|
Data type
|
|
HEADER_VERSION
|
short
|
|
WHEN_TIMEZONE
|
int
|
|
WHEN_ACCURACY
|
int
|
|
WHEN_DURATION
|
int
|
|
WHAT_CLUSTER
|
short
|
|
WHAT_CLASS
|
short
|
|
WHAT_SUBCLASS
|
short
|
|
WHAT_ELEMENT
|
short
|
|
HOW_HOW
|
int
|
|
HOW_CERTAINTY
|
int
|
|
HOW_RELIABILITY
|
int
|
|
CONTEXT_SOCIAL
|
int
|
|
CONTEXT_WEATHER
|
int
|
|
CONTEXT_CONTEXTTAG
|
int
|
|
CONTEXT_CONTEXTVALUE
|
int
|
|
WHERE_EXACTNESS
|
int
|
|
WHERE_LATITUDE
|
double
|
|
WHERE_LONGITUDE
|
double
|
|
WHERE_MCC
|
int
|
|
WHERE_MNC
|
int
|
|
WHERE_LCA
|
int
|
|
WHERE_CID
|
int
|
|
WHERE_PLACE
|
int
|
|
WHERE_POSTCODE
|
String
|
|
EXTENSION_INTTAG
|
int
|
|
EXTENSION_INTVALUE
|
int
|
|
EXTENSION_FLTTAG
|
int
|
|
EXTENSION_FLTVALUE
|
double
|
|
EXTENSION_STRTAG
|
int
|
|
EXTENSION_STRVALUE
|
string
|
Returns the result of the query.
|
Parameter Name
|
Description
|
Type
|
|
QueryResult
|
The query result is a list of JSON
objects that match the query.
|
JSON Object: Format
defined in Section 2.2.2.1
|
Media type:
application/json, text/json
For a simple filter the result is a JSON
list of Atoms, see [COEL_BAP-1.0]. If a projection is specified only requested fields
of the matching Atoms are included.
For aggregates, the result objects contain
a list of aggregated columns, described by column name and aggregator (as
specified in the query), with the result of the aggregate function. If a
grouping is specified the object contains a list of column names and their
groups for each aggregation.
When BlockBy is absent, all results are
returned as the only element in the Blocks list.
Blocks: (list)
Aggregate: (list)
ColName: column
name
Aggregator:
aggregate function
Value: aggregate
function value
Group: (list)
ColName: grouping
column
Value: group
Request segment data for a Consumer.
|
API
|
Description
|
|
POST segment
|
Send a copy of all available segment data for the
given consumer.
|
|
Parameter Name
|
Description
|
Type
|
|
ConsumerID
|
Pseudonymous Key representing the requesting Consumer
who is the subject of the query (REQUIRED).
|
String: Format defined in [COEL_IDA-1.0].
|
Media type:
application/json, text/json
Returns the segment data for the Consumer.
|
Parameter Name
|
Description
|
Type
|
|
SegmentData
|
An OPTIONAL object containing
(OPTIONALLY) residential time zone and latitude, gender, and year of birth.
|
Object: Composed of
ResidentTimeZone, ResidentLatitude, Gender, and YearOfBirth.
|
|
ResidentTimeZone
|
The time zone in which the Consumer
generally resides.
|
TimeZoneString: As +/-
hh:mm from UTC.
|
|
ResidentLatitude
|
The latitude (rounded to an integer) at
which the Consumer generally resides.
|
Integer: Representing
latitude rounded to an integer.
|
|
Gender
|
The gender of the Consumer.
|
String: One of “Male”
or “Female”
|
|
YearOfBirth
|
Year in which the Consumer was born.
|
Integer: Representing
year of birth.
|
Media type:
application/json, text/json
Sample:
{"SegmentData":
{"ResidentTimeZone":
"+03:00",
"ResidentLatitude":
51,
"Gender":
"Female",
"YearOfBirth":
1993
}
}
Any implementation MUST accept queries in
the form described in section 2 of this document AND the conformance criteria
in [COEL_RPE-1.0], however only a minimum
functionality MUST be supported.
·
A Data Engine MUST return raw atoms within a time window for a
given ConsumerID.
·
A Data Engine MUST return the number of atoms held in a time
window for a given ConsumerID.
The following is the first of the two
minimum queries that a Data Engine implementation MUST support. The result of
this query is a list of all Atoms with a start time within the time window.
Sample:
{"ConsumerID" :
"ed58fc40-a866-11e4-bcd8-0800200c9a66",
"Timewindow" : {
"StartTime" : 1415145600,
"EndTime" : 1415232000
}
}
The following is the second of the two
minimum queries that a Data Engine implementation MUST support. The result of
this query is the number of Atoms with a start time within the time window.
Sample:
{"ConsumerID" :
"ed58fc40-a866-11e4-bcd8-0800200c9a66",
"Timewindow" : {
"StartTime" : 1415145600,
"EndTime" : 1415232000},
"Query" : {
"Aggregate" : {
"Columns" : {
"ColName" :
"WHAT_CLUSTER",
"Aggregator" :
"COUNT"}}}
}
The following individuals have participated
in the creation of this specification and are gratefully acknowledged:
Participants:
Paul Bruton, Individual Member
Joss Langford, Activinsights
Matthew Reed, Coelition
David Snelling, Fujitsu
|
Revision
|
Date
|
Editor
|
Changes Made
|
|
1
|
22/09/2105
|
David Snelling
|
Initial inclusion of submission material.
|
|
2
|
25/09/2105
|
Paul Bruton
|
Added review comments
|
|
3
|
25/09/2105
|
Joss Langford
|
Review, spelling correct.
|
|
4
|
11/10/2015
|
David Snelling
|
Reviewed in document comments and fixed
or created issues. Fixed issue: COEL-9
|
|
5
|
11/10/2015
|
David Snelling
|
Removed tracking
|
|
6
|
11/10/2015
|
David Snelling
|
Added column names table.
|
|
7
|
13/10/2015
|
Paul Bruton
|
Conformance includes reference to RPE
document.
|
|
8
|
19/10/2015
|
David Snelling
|
Fixed silly quotes and general tidy up.
|
|
9
|
31/10/2015
|
Joss Langford
|
Accept all changes, track changes off,
check references and style consistency.
|
|
10
|
02/11/2015
|
David Snelling
|
Final Data Change
|
|
11
|
03/11/2015
|
Paul Bruton
|
Added normative terms in 1st
paragraph of section 2, corrected text in description of password encoding
|
|
12
|
24/11/2015
|
Paul Bruton
|
Addressing issues COEL-43 and COEL-44
|
|
13
|
25/11/2015
|
David Snelling
|
Set date for CD publication
|
