When the database is recreated, the sequences
used in the events_timed and events_seq tables
will be at their initial values, which will
almost certainly conflict with existing data
when it is imported via COPY.
With this commit, we set the current value for
those sequences to something usable.
Fixes#33.
Some columns have been renamed:
* ts0 → tstamp
* shotNumber → point
The ts1 column from events_timed has been removed.
Labels attached to a sequence / shot without an event
have been removed. All labels are now associated with events.
Changes to event views.
It inserts `LDSP` and `FDSP` labels, if those exist
in the `labels` table, on the last and first shotpoints
of the day when a sequence is shot through midnight.
The server timezone is always set to UTC so the midnight
shot implicitly refers to UTC through this.
Events can be associated either with a timestamp *or* with a
sequence + shotpoint (but not both, for data integrity reasons).
Events and shotpoints can also have “labels” associated with them.
The difference between a comment and a label is that the former
is free text while the latter is predefined and has associated
properties (currently only for display, but could also have QC
related properties such as ensuring that there is only one “FSP”
label per sequence and so on).
The `events` view puts everything together into a coherent view.
Note that this view may produce multiple rows for the same
timestamp or shotpoint, for instance when the event has both
a text comment and one or more labels.
The raw_lines_summary and raw_lines_summary_geometry
views are analogous to final_lines_summary and
final_lines_summary_geometry respectively.
One difference of note is that the final_ version
may report negative missing shots, while the raw_
versions assume that the user is not interested in
anything outside the preplot.
- The raw_shots and final_shots tables contain *shots*,
as the name says, and nothing else.
- The objref is made an integer. This is consistent with
P1/11 usage and for anything else a relation can be used.
- Raw and final shot tables also include the corresponding
preplot line as well as the shot number. The preplot line
is explicit in the P1/11s that we have seen and can otherwise
be derived from the source geometry in the P1/11 or P1/90
headers (provided those headers are correct). It is the
import process' business to figure out what the preplot
lines are if those are not explicitly given in the data.
- As a result of the above, some of the views have been
re-written, hopefully in a simpler way.
- The shot_count view has been removed as it was neither used
nor useful.
