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update_stds_spatial_temporal_extent_template.sql
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update_stds_spatial_temporal_extent_template.sql
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--#############################################################################
-- This SQL script is to update the spatial and temporal extent as well as
-- the modifcation time and revision of a space time dataset. This script
-- should be called when maps inserted or deleted in a space time dataset.
--
--
-- Author: Soeren Gebbert soerengebbert <at> googlemail <dot> com
--#############################################################################
-- SPACETIME_REGISTER_TABLE is a placeholder for specific stds map register table name (SQL compliant)
-- SPACETIME_ID is a placeholder for specific stds id: name@mapset
-- GRASS_MAP is a placeholder for specific map type: raster, raster3d or vector
-- STDS is a placeholder for specific space-time dataset type: strds, str3ds, stvds
-- UPDATE STDS_base SET modification_time = datetime("NOW") WHERE id = 'SPACETIME_ID';
-- UPDATE STDS_base SET revision = (revision + 1) WHERE id = 'SPACETIME_ID';
-- Number of registered maps
UPDATE STDS_metadata SET number_of_maps =
(SELECT count(id) FROM SPACETIME_REGISTER_TABLE)
WHERE id = 'SPACETIME_ID';
-- Update the temporal extent
UPDATE STDS_absolute_time SET start_time =
(SELECT min(start_time) FROM GRASS_MAP_absolute_time WHERE GRASS_MAP_absolute_time.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_absolute_time SET end_time =
(SELECT max(end_time) FROM GRASS_MAP_absolute_time WHERE GRASS_MAP_absolute_time.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_relative_time SET start_time =
(SELECT min(start_time) FROM GRASS_MAP_relative_time WHERE GRASS_MAP_relative_time.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_relative_time SET end_time =
(SELECT max(end_time) FROM GRASS_MAP_relative_time WHERE GRASS_MAP_relative_time.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
-- Update the spatial extent
UPDATE STDS_spatial_extent SET north =
(SELECT max(north) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_spatial_extent SET south =
(SELECT min(south) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_spatial_extent SET east =
(SELECT max(east) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_spatial_extent SET west =
(SELECT min(west) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_spatial_extent SET top =
(SELECT max(top) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_spatial_extent SET bottom =
(SELECT min(bottom) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';
UPDATE STDS_spatial_extent SET proj =
(SELECT min(proj) FROM GRASS_MAP_spatial_extent WHERE GRASS_MAP_spatial_extent.id IN
(SELECT id FROM SPACETIME_REGISTER_TABLE)
) WHERE id = 'SPACETIME_ID';