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data partitioning

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This commit is contained in:
Brian Quinion
2010-10-26 15:22:41 +00:00
parent 4c2c499860
commit e6d983474b
10 changed files with 273 additions and 511 deletions
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48
sql/partitions.src.sql
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@@ -10,6 +10,9 @@ create type nearfeature as (
distance float
);
CREATE TABLE location_area_country () INHERITS (location_area_large);
CREATE INDEX idx_location_area_country_geometry ON location_area_country USING GIST (geometry);
-- start
CREATE TABLE location_area_large_-partition- () INHERITS (location_area_large);
CREATE INDEX idx_location_area_large_-partition-_geometry ON location_area_large_-partition- USING GIST (geometry);
@@ -24,12 +27,20 @@ CREATE INDEX idx_location_area_roadfar_-partition-_geometry ON location_area_roa
create or replace function getNearRoads(in_partition TEXT, point GEOMETRY) RETURNS setof nearplace AS $$
DECLARE
r nearplace%rowtype;
a BOOLEAN;
BEGIN
-- start
IF in_partition = '-partition-' THEN
FOR r IN SELECT place_id FROM location_area_large WHERE partition = '-partition-' and ST_Contains(geometry, point) LOOP
a := FALSE;
FOR r IN SELECT place_id FROM location_area_roadnear_-partition- WHERE ST_Contains(geometry, point) ORDER BY ST_Distance(point, centroid) ASC LIMIT 1 LOOP
a := TRUE;
RETURN NEXT r;
RETURN;
END LOOP;
FOR r IN SELECT place_id FROM location_area_roadfar_-partition- WHERE ST_Contains(geometry, point) ORDER BY ST_Distance(point, centroid) ASC LOOP
RETURN NEXT r;
RETURN;
END LOOP;
RETURN;
END IF;
@@ -40,22 +51,20 @@ END
$$
LANGUAGE plpgsql;
create or replace function getNearFeatures(in_partition TEXT, point GEOMETRY, maxrank INTEGER) RETURNS setof nearfeature AS $$
create or replace function getNearFeatures(in_partition TEXT, point GEOMETRY, maxrank INTEGER, isin_tokens INT[]) RETURNS setof nearfeature AS $$
DECLARE
r nearfeature%rowtype;
BEGIN
-- start
IF in_partition = '-partition-' THEN
FOR r IN SELECT
place_id,
keywords,
rank_address,
rank_search,
ST_Distance(place_centroid, centroid) as distance
FROM location_area_large
WHERE ST_Contains(area, point) and location_area_large.rank_search < maxrank
ORDER BY ST_Distance(place_centroid, centroid) ASC
FOR r IN
SELECT place_id, keywords, rank_address, rank_search, ST_Distance(point, centroid) as distance FROM (
SELECT * FROM location_area_large_-partition- WHERE ST_Contains(geometry, point) and rank_search < maxrank
UNION ALL
SELECT * FROM location_area_country WHERE ST_Contains(geometry, point) and rank_search < maxrank
) as location_area
ORDER BY rank_search desc, isin_tokens && keywords desc, isguess asc, rank_address asc, ST_Distance(point, centroid) ASC
LOOP
RETURN NEXT r;
END LOOP;
@@ -89,15 +98,20 @@ $$
LANGUAGE plpgsql;
create or replace function insertLocationAreaLarge(
in_partition TEXT, in_place_id bigint, in_keywords INTEGER[],
in_partition TEXT, in_place_id bigint, in_country_code VARCHAR(2), in_keywords INTEGER[],
in_rank_search INTEGER, in_rank_address INTEGER, in_estimate BOOLEAN,
in_centroid GEOMETRY, in_geometry GEOMETRY) RETURNS BOOLEAN AS $$
DECLARE
BEGIN
IF in_rank_search <= 4 THEN
INSERT INTO location_area_country values (in_partition, in_place_id, in_country_code, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
RETURN TRUE;
END IF;
-- start
IF in_partition = '-partition-' THEN
INSERT INTO location_area_large_-partition- values (in_partition, in_place_id, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
INSERT INTO location_area_large_-partition- values (in_partition, in_place_id, in_country_code, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
RETURN TRUE;
END IF;
-- end
@@ -109,7 +123,7 @@ $$
LANGUAGE plpgsql;
create or replace function insertLocationAreaRoadNear(
in_partition TEXT, in_place_id bigint, in_keywords INTEGER[],
in_partition TEXT, in_place_id bigint, in_country_code VARCHAR(2), in_keywords INTEGER[],
in_rank_search INTEGER, in_rank_address INTEGER, in_estimate BOOLEAN,
in_centroid GEOMETRY, in_geometry GEOMETRY) RETURNS BOOLEAN AS $$
DECLARE
@@ -117,7 +131,7 @@ BEGIN
-- start
IF in_partition = '-partition-' THEN
INSERT INTO location_area_roadnear_-partition- values (in_partition, in_place_id, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
INSERT INTO location_area_roadnear_-partition- values (in_partition, in_place_id, in_country_code, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
RETURN TRUE;
END IF;
-- end
@@ -129,7 +143,7 @@ $$
LANGUAGE plpgsql;
create or replace function insertLocationAreaRoadFar(
in_partition TEXT, in_place_id bigint, in_keywords INTEGER[],
in_partition TEXT, in_place_id bigint, in_country_code VARCHAR(2), in_keywords INTEGER[],
in_rank_search INTEGER, in_rank_address INTEGER, in_estimate BOOLEAN,
in_centroid GEOMETRY, in_geometry GEOMETRY) RETURNS BOOLEAN AS $$
DECLARE
@@ -137,7 +151,7 @@ BEGIN
-- start
IF in_partition = '-partition-' THEN
INSERT INTO location_area_roadfar_-partition- values (in_partition, in_place_id, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
INSERT INTO location_area_roadfar_-partition- values (in_partition, in_place_id, in_country_code, in_keywords, in_rank_search, in_rank_address, in_estimate, in_centroid, in_geometry);
RETURN TRUE;
END IF;
-- end