cts:period-compare-query(
$axis-1 as xs:string,
$operator as xs:string,
$axis-2 as xs:string,
[$options as xs:string*]
) as cts:period-compare-query
Summary
Returns a cts:query matching documents that have relevant
pair of period values. Searches with the
cts:period-compare-query
constructor require two valid names of period, if the either of the specified
period does not exist, then an exception is thrown.
Parameters
axis-1
Name of the first axis to compare
operator
A comparison operator. Period is the two timestamps contained in the axis.
Operators include:
"aln_equals"
Match documents whose period1 equals period2.
"aln_contains"
Match documents whose period1 contains period2. i.e. period1
starts before period2 starts and ends before period2 ends.
"aln_contained_by"
Match documents whose period1 is contained by period2.
"aln_meets"
Match documents whose period1 meets period2, i.e. period1 ends at
period2 start.
"aln_met_by"
Match documents whose period1 meets period2, i.e. period1 starts
at period2 end.
"aln_before"
Match documents whose period1 is before period2, i.e. period1 ends
before period2 starts.
"aln_after"
Match documents whose period1 is after period2, i.e. period1
starts after period2 ends.
"aln_starts"
Match documents whose period1 starts period2, i.e. period1 starts
at period2 start and ends before period2 ends.
"aln_started_by"
Match documents whose period2 starts period1, i.e. period1 starts
at period2 start and ends after period2 ends.
"aln_finishes"
Match documents whose period1 finishes period2, i.e. period1
finishes at period2 finish and starts after period2 starts.
"aln_finished_by"
Match documents whose period2 finishes period1, i.e. period1
finishes at period2 finish and starts before period2 starts.
"aln_overlaps"
Match documents whose period1 overlaps period2, i.e. period1
starts before period2 start and ends before period2 ends but after
period2 starts.
"aln_overlapped_by"
Match documents whose period2 overlaps period1, i.e. period1
starts after period2 start but before period2 ends and ends after
period2 ends.
"iso_contains"
Match documents whose period1 contains period2 in sql 2011 standard.
i.e. period1 starts before or at period2 starts and ends after or
at period2 ends.
"iso_overlaps"
Match documents whose period1 overlaps period2 in sql 2011 standard.
i.e. period1 and period2 have common time period.
"iso_succeeds"
Match documents whose period1 succeeds period2 in sql 2011 standard.
i.e. period1 starts at or after period2 ends
"iso_precedes"
Match documents whose period1 precedes period2 in sql 2011 standard.
i.e. period1 ends at or before period2 ends
"iso_succeeds"
Match documents whose period1 succeeds period2 in sql 2011 standard.
i.e. period1 starts at or after period2 ends
"iso_precedes"
Match documents whose period1 precedes period2 in sql 2011 standard.
i.e. period1 ends at or before period2 ends
"iso_imm_succeeds"
Match documents whose period1 immediately succeeds period2 in
sql 2011 standard. i.e. period1 starts at period2 ends
"iso_imm_precedes"
Match documents whose period1 immediately precedes period2 in
sql 2011 standard. i.e. period1 ends at period2 ends
axis-2
Name of the second period to compare
options
Options to this query. The default is ().
Options include:
"cached"
Cache the results of this query in the list cache.
"uncached"
Do not cache the results of this query in the list cache.
Usage Notes
If you want to constrain on a range of period comparisons, you can combine multiple
cts: constructors together
with cts:and-query or any of the other composable
cts:query constructors, as in the last part of the example
below.
If neither "cached" nor "uncached" is present, it specifies "cached".
Negative "min-occurs" or "max-occurs" values will be treated as 0 and
non-integral values will be rounded down. An error will be raised if
the "min-occurs" value is greater than the "max-occurs" value.
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