cartodb4/observatory-extension
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

WIP

Browse Source
This commit is contained in:
Mario de Frutos 2018-05-09 09:39:20 +02:00
parent 5f9f77ded1
commit 50008ea149
1 changed files with 7 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/pg/sql/45_observatory_mvt.sql
View File

@ -57,7 +57,7 @@ BEGIN
-- asked-for measures in the Observatory.
_procgeom_clauses AS (
SELECT
'_procgeoms_' || Coalesce(geom_tablename || '_' || geom_geomref_colname, api_method) || ' AS (' ||
'_procgeoms_' || Coalesce(left(geom_tablename,10) || '_' || geom_geomref_colname, api_method) || ' AS (' ||
'SELECT ' ||
'ST_AsMVTGeom(st_intersection(' || geom_tablename || '.' || geom_colname || ', _geoms.geom), ST_MakeBox2D(ST_Point(0, 0), ST_Point($2, $2)), $2, $3, $4) AS mvtgeom, ' ||
geom_tablename || '.' || geom_geomref_colname || ' AS geomref, ' ||
@ -80,7 +80,7 @@ BEGIN
-- provide values according to users geometries.
_val_clauses AS (
SELECT
'_vals_' || Coalesce(geom_tablename || '_' || geom_geomref_colname, api_method) || ' AS (
'_vals_' || Coalesce(left(geom_tablename,10) || '_' || geom_geomref_colname, api_method) || ' AS (
SELECT _procgeoms.geomref, _procgeoms.mvtgeom, ' ||
String_Agg('json_build_object(' || CASE
-- api-delivered values
@ -105,7 +105,7 @@ BEGIN
END
-- areaNormalized
WHEN LOWER(normalization) LIKE 'area%'
THEN
THEN
-- areaNormalized polygon interpolation
-- SUM (numer * (% OBS geom in user geom)) / area of big geom
' ROUND(CAST(SUM(' || numer_tablename || '.' || numer_colname || ' ' ||
@ -152,7 +152,7 @@ BEGIN
END
|| ') val_' || colid, ', ')
|| '
FROM _procgeoms_' || Coalesce(geom_tablename || '_' || geom_geomref_colname, api_method) || ' _procgeoms ' ||
FROM _procgeoms_' || Coalesce(left(geom_tablename,10) || '_' || geom_geomref_colname, api_method) || ' _procgeoms ' ||
Coalesce(String_Agg(DISTINCT
Coalesce('LEFT JOIN observatory.' || numer_tablename || ' ON _procgeoms.geomref = observatory.' || numer_tablename || '.' || numer_geomref_colname,
', LATERAL (SELECT * FROM cdb_observatory.' || api_method || '(_procgeoms.mvtgeom' || Coalesce(', ' ||
@ -164,7 +164,7 @@ BEGIN
ORDER BY _procgeoms.geomref'
|| ')'
AS val_clause,
'_vals_' || Coalesce(geom_tablename || '_' || geom_geomref_colname, api_method) AS cte_name
'_vals_' || Coalesce(left(geom_tablename, 10) || '_' || geom_geomref_colname, api_method) AS cte_name
FROM _meta
GROUP BY geom_tablename, geom_geomref_colname, geom_colname, api_method
),
@ -180,9 +180,8 @@ BEGIN
-- Generate JSON clause. This puts together vals from val_clauses
_json_clause AS (SELECT
'SELECT ST_AsMVT(q, ''data'', $2) FROM (' ||
'SELECT ' || cdb_observatory.FIRST(cte_name) || '.geomref::TEXT id, '
|| cdb_observatory.FIRST(cte_name) || '.mvtgeom geom,
to_JSONB(ARRAY[' || (SELECT String_Agg('val_' || colid, ', ') FROM _meta) || '])
'SELECT ' || cdb_observatory.FIRST(cte_name) || '.geomref::TEXT id, ' || (SELECT String_Agg('val_' || colid || '->>''value'' as val_' || colid, ', ') FROM _meta) || ', '
|| cdb_observatory.FIRST(cte_name) || '.mvtgeom geom
FROM ' || String_Agg(cte_name, ', ') ||
Coalesce(' WHERE ' || val_joins, ') q')
AS json_clause