Re: [topbraid-users] Time Interval Functions
Rich,
we do not support any other functions for XSD duration literals (such as
P0Y0M0DT22H0M0.000S) apart from those in the SPARQL 1.1 standard.
Holger
On 2/12/2014 12:48, Scott Henninger wrote:
Rich; Not sure if the difference in expectation is with the version
TopBraid being used, but using 4.3, smf:duration() takes xsd:dateTime
and will return down to the milliseconds. As an example, to get the
number of seconds between a dateTime property and the current
xsd:dateTime, you can use the following:
SELECT ?dur
WHERE
{ ?s ex:dt ?time
BIND(smf:duration("s", ?time, now()) AS ?dur)
}
-- Scott
On 2/11/2014, 6:51 PM, Rich Keller wrote:
Scott: I'm aware of the SPARQL and TopBraid functions you mention.
But to my knowledge, these functions do not operate on duration
literals like P0Y0M0DT22H0M0.000S, which was returned by my query
subtracting two xsd:time or xsd:dateTime literals (see original
post). As I mentioned, smf:duration seems to take two xsd:date
variables as input, which means it is not suitable for determining
the duration between arbitrary times.
Rich
On Tuesday, February 11, 2014 9:39:40 AM UTC-8, Scott Henninger wrote:
Rich, there are a number of SPARQL and TopBraid functions that
work on xsd:time and xsd:dateTime for SPARQL, see
http://www.w3.org/TR/sparql11-query/#func-date-time
, including
year(), month(), day(), hours(), timezone(), etc.
TopBraid also has functions for duration, formatting date
strings, etc. I.e. you can convert a dateTime string to a date
string using dateFormat(). See TopBraid Composer Help TopBraid
Composer > Reference > Functions Overview
-- Scott
On 2/11/2014, 10:40 AM, Rich Keller wrote:
Hi. I have been trying to do some temporal arithmetic in SPARQL
and have stumbled upon what I believe are time periods or time
intervals. For example
SELECT ?a ?aa
WHERE {
BIND (("08:15:00"^^xsd:time - "10:15:00"^^xsd:time) AS ?a)
BIND (("2012-09-08T08:15:00"^^xsd:dateTime -
"2012-09-07T10:15:00"^^xsd:dateTime) AS ?aa)
}
Results:
?a -> -P0Y0M0DT2H0M0.000S (negative 2 hours)
?aa -> P0Y0M0DT22H0M0.000S (positive 22 hours)
My question: Is there any way to operate on these time periods?
In particular, suppose I want to convert the length of these
these periods into seconds or minutes. smf:duration does
something similar, but it works on xsd:date values, and not time
periods. If smf:duration took xsd:dateTime or xsd:time
arguments, that would be helpful.
Do you have any pointers to functions that extract information
from these time periods? I suppose I can figure a way to do the
arithmetic myself using days(), hours(), minutes() functions,
but I would prefer to avoid that.
Thanks, Rich
Using TBC-SE 4.3.0
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Re: [topbraid-users] Time Interval Functions
Rich; Not sure if the difference in expectation is
with the version TopBraid being used, but using 4.3,
smf:duration() takes xsd:dateTime and will return down to the
milliseconds. As an example, to get the number of seconds between
a dateTime property and the current xsd:dateTime, you can use the
following:
SELECT ?dur
WHERE
{ ?s ex:dt ?time
BIND(smf:duration("s", ?time, now()) AS ?dur)
}
-- Scott
On 2/11/2014, 6:51 PM, Rich Keller
wrote:
Scott: I'm aware of the SPARQL and TopBraid
functions you mention. But to my knowledge, these functions do
not operate on duration literals like P0Y0M0DT22H0M0.000S, which
was returned by my query subtracting two xsd:time or
xsd:dateTime literals (see original post). As I mentioned,
smf:duration seems to take two xsd:date variables as input,
which means it is not suitable for determining the duration
between arbitrary times.
Rich
On Tuesday, February 11, 2014 9:39:40 AM UTC-8, Scott Henninger
wrote:
Rich,
there are a number of SPARQL and TopBraid functions that
work on xsd:time and xsd:dateTime for SPARQL, see http://www.w3.org/TR/sparql11-query/#func-date-time,
including year(), month(), day(), hours(), timezone(),
etc.
TopBraid also has functions for duration, formatting date
strings, etc. I.e. you can convert a dateTime string to a
date string using dateFormat(). See TopBraid Composer
Help TopBraid Composer > Reference > Functions
Overview
-- Scott
On 2/11/2014, 10:40 AM, Rich Keller wrote:
Hi. I have been trying to do some temporal
arithmetic in SPARQL and have stumbled upon what I
believe are time periods or time intervals. For example
SELECT ?a ?aa
WHERE {
BIND (("08:15:00"^^xsd:time - "10:15:00"^^xsd:time) AS
?a)
BIND (("2012-09-08T08:15:00"^^xsd:dateTime -
"2012-09-07T10:15:00"^^xsd:dateTime) AS ?aa)
}
Results:
?a -> -P0Y0M0DT2H0M0.000S (negative 2 hours)
?aa -> P0Y0M0DT22H0M0.000S (positive 22 hours)
My question: Is there any way to operate on these time
periods? In particular, suppose I want to convert the
length of these these periods into seconds or minutes.
smf:duration does something similar, but it works on
xsd:date values, and not time periods. If smf:duration
took xsd:dateTime or xsd:time arguments, that would be
helpful.
Do you have any pointers to functions that extract
information from these time periods? I suppose I can
figure a way to do the arithmetic myself using days(),
hours(), minutes() functions, but I would prefer to
avoid that.
Thanks, Rich
Using TBC-SE 4.3.0
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topbraid-us
Re: [topbraid-users] Time Interval Functions
Scott: I'm aware of the SPARQL and TopBraid functions you mention. But to
my knowledge, these functions do not operate on duration literals like
P0Y0M0DT22H0M0.000S, which was returned by my query subtracting two
xsd:time or xsd:dateTime literals (see original post). As I mentioned,
smf:duration seems to take two xsd:date variables as input, which means it
is not suitable for determining the duration between arbitrary times.
Rich
On Tuesday, February 11, 2014 9:39:40 AM UTC-8, Scott Henninger wrote:
>
> Rich, there are a number of SPARQL and TopBraid functions that work on
> xsd:time and xsd:dateTime for SPARQL, see
> http://www.w3.org/TR/sparql11-query/#func-date-time, including year(),
> month(), day(), hours(), timezone(), etc.
>
> TopBraid also has functions for duration, formatting date strings, etc.
> I.e. you can convert a dateTime string to a date string using
> dateFormat(). See TopBraid Composer Help TopBraid Composer > Reference >
> Functions Overview
>
> -- Scott
>
> On 2/11/2014, 10:40 AM, Rich Keller wrote:
>
> Hi. I have been trying to do some temporal arithmetic in SPARQL and have
> stumbled upon what I believe are time periods or time intervals. For
> example
>
> SELECT ?a ?aa
> WHERE {
> BIND (("08:15:00"^^xsd:time - "10:15:00"^^xsd:time) AS ?a)
> BIND (("2012-09-08T08:15:00"^^xsd:dateTime -
> "2012-09-07T10:15:00"^^xsd:dateTime) AS ?aa)
> }
>
> Results:
>
> ?a -> -P0Y0M0DT2H0M0.000S (negative 2 hours)
> ?aa -> P0Y0M0DT22H0M0.000S (positive 22 hours)
>
> My question: Is there any way to operate on these time periods? In
> particular, suppose I want to convert the length of these these periods
> into seconds or minutes. smf:duration does something similar, but it works
> on xsd:date values, and not time periods. If smf:duration took xsd:dateTime
> or xsd:time arguments, that would be helpful.
>
> Do you have any pointers to functions that extract information from these
> time periods? I suppose I can figure a way to do the arithmetic myself
> using days(), hours(), minutes() functions, but I would prefer to avoid
> that.
>
> Thanks, Rich
>
> Using TBC-SE 4.3.0
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Re: [topbraid-users] Time Interval Functions
Rich, there are a number of SPARQL and TopBraid
functions that work on xsd:time and xsd:dateTime for SPARQL, see
http://www.w3.org/TR/sparql11-query/#func-date-time, including
year(), month(), day(), hours(), timezone(), etc.
TopBraid also has functions for duration, formatting date strings,
etc. I.e. you can convert a dateTime string to a date string
using dateFormat(). See TopBraid Composer Help TopBraid Composer
> Reference > Functions Overview
-- Scott
On 2/11/2014, 10:40 AM, Rich Keller
wrote:
Hi. I have been trying to do some temporal
arithmetic in SPARQL and have stumbled upon what I believe are
time periods or time intervals. For example
SELECT ?a ?aa
WHERE {
BIND (("08:15:00"^^xsd:time - "10:15:00"^^xsd:time) AS ?a)
BIND (("2012-09-08T08:15:00"^^xsd:dateTime -
"2012-09-07T10:15:00"^^xsd:dateTime) AS ?aa)
}
Results:
?a -> -P0Y0M0DT2H0M0.000S (negative 2 hours)
?aa -> P0Y0M0DT22H0M0.000S (positive 22 hours)
My question: Is there any way to operate on these time periods?
In particular, suppose I want to convert the length of these
these periods into seconds or minutes. smf:duration does
something similar, but it works on xsd:date values, and not time
periods. If smf:duration took xsd:dateTime or xsd:time
arguments, that would be helpful.
Do you have any pointers to functions that extract information
from these time periods? I suppose I can figure a way to do the
arithmetic myself using days(), hours(), minutes() functions,
but I would prefer to avoid that.
Thanks, Rich
Using TBC-SE 4.3.0
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[topbraid-users] Time Interval Functions
Hi. I have been trying to do some temporal arithmetic in SPARQL and have
stumbled upon what I believe are time periods or time intervals. For
example
SELECT ?a ?aa
WHERE {
BIND (("08:15:00"^^xsd:time - "10:15:00"^^xsd:time) AS ?a)
BIND (("2012-09-08T08:15:00"^^xsd:dateTime -
"2012-09-07T10:15:00"^^xsd:dateTime) AS ?aa)
}
Results:
?a -> -P0Y0M0DT2H0M0.000S (negative 2 hours)
?aa -> P0Y0M0DT22H0M0.000S (positive 22 hours)
My question: Is there any way to operate on these time periods? In
particular, suppose I want to convert the length of these these periods
into seconds or minutes. smf:duration does something similar, but it works
on xsd:date values, and not time periods. If smf:duration took xsd:dateTime
or xsd:time arguments, that would be helpful.
Do you have any pointers to functions that extract information from these
time periods? I suppose I can figure a way to do the arithmetic myself
using days(), hours(), minutes() functions, but I would prefer to avoid
that.
Thanks, Rich
Using TBC-SE 4.3.0
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