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Merge pull request #313 from CartoDB/add_numgeoms_getavailablegeometries

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OBS_GetAvailableGeometries now receives number of geometries from input
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Mario de Frutos 2017-10-18 10:05:46 +02:00 committed by GitHub
commit b62e3ea963
3 changed files with 9 additions and 6 deletions
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3
doc/discovery_functions.md
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@ -228,7 +228,7 @@ SELECT * FROM cdb_observatory.OBS_GetAvailableDenominators(
WHERE valid_timespan IS True;
```
## OBS_GetAvailableGeometries(bounds, filter_tags, numer_id, denom_id, timespan)
## OBS_GetAvailableGeometries(bounds, filter_tags, numer_id, denom_id, timespan, number_geometries)
Return available geometries within a boundary and with the specified
`filter_tags`.
@ -242,6 +242,7 @@ filter_tags | Text[] | a list of filters. Only geometries for which all of thes
numer_id | Text | the ID of a numerator to check whether the geometry is valid against. Will not reduce length of returned table, but will change values for `valid_numer` (optional)
denom_id | Text | the ID of a denominator to check whether the geometry is valid against. Will not reduce length of returned table, but will change values for `valid_denom` (optional)
timespan | Text | the ID of a timespan to check whether the geometry is valid against. Will not reduce length of returned table, but will change values for `valid_timespan` (optional)
number_geometries | Integer | Number of geometries of the source data in order to calculate more accurately the score value to know which geometry fits better with the provided extent. (optional)
#### Returns

2
src/pg/observatory.control
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@ -1,5 +1,5 @@
comment = 'CartoDB Observatory backend extension'
default_version = '1.7.0'
default_version = '1.8.0'
requires = 'postgis'
superuser = true
schema = cdb_observatory

10
src/pg/sql/42_observatory_exploration.sql
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@ -323,7 +323,8 @@ CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetAvailableGeometries(
filter_tags TEXT[] DEFAULT NULL,
numer_id TEXT DEFAULT NULL,
denom_id TEXT DEFAULT NULL,
timespan TEXT DEFAULT NULL
timespan TEXT DEFAULT NULL,
number_geoms INTEGER DEFAULT NULL
) RETURNS TABLE (
geom_id TEXT,
geom_name TEXT,
@ -390,15 +391,16 @@ BEGIN
FROM observatory.obs_meta_geom o
WHERE %s (geom_tags ?& $4 OR CARDINALITY($4) = 0)
), scores AS (
SELECT * FROM cdb_observatory._OBS_GetGeometryScores($5,
(SELECT ARRAY_AGG(geom_id) FROM available_geoms)
SELECT * FROM cdb_observatory._OBS_GetGeometryScores(bounds => $5,
filter_geom_ids => (SELECT ARRAY_AGG(geom_id) FROM available_geoms),
desired_num_geoms => $6::integer
)
) SELECT DISTINCT ON (geom_id) available_geoms.*, score, numtiles, notnull_percent, numgeoms,
percentfill, estnumgeoms, meanmediansize
FROM available_geoms, scores
WHERE available_geoms.geom_id = scores.column_id
$string$, geom_clause)
USING numer_id, denom_id, timespan, filter_tags, bounds;
USING numer_id, denom_id, timespan, filter_tags, bounds, number_geoms;
RETURN;
END
$$ LANGUAGE plpgsql;