52 lines
2.4 KiB
MySQL
52 lines
2.4 KiB
MySQL
|
-------------------------------------------------------------------------------
|
||
|
|
-- The following script creates a new table for the pgsql simple schema for
|
||
|
|
-- storing full way geometries.
|
||
|
|
--
|
||
|
|
-- Author: Ralf
|
||
|
|
-------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
|
||
|
|
-- drop table if it exists
|
||
|
|
DROP TABLE IF EXISTS way_geometry;
|
||
|
|
|
||
|
|
-- create table
|
||
|
|
CREATE TABLE way_geometry(
|
||
|
|
way_id bigint NOT NULL
|
||
|
|
);
|
||
|
|
-- add PostGIS geometry column
|
||
|
|
SELECT AddGeometryColumn('', 'way_geometry', 'geom', 4326, 'GEOMETRY', 2);
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
-------------------------------------------------------------------------------
|
||
|
|
-- the following might go into the POST_LOAD_SQL-array in the class "PostgreSqlWriter"??
|
||
|
|
-------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
-- add a linestring for every way (create a polyline)
|
||
|
|
INSERT INTO way_geometry select id, ( select ST_LineFromMultiPoint( Collect(nodes.geom) ) from nodes
|
||
|
|
left join way_nodes on nodes.id=way_nodes.node_id where way_nodes.way_id=ways.id ) FROM ways;
|
||
|
|
|
||
|
|
-- after creating a line for every way (polyline), we want closed ways to be stored as polygones.
|
||
|
|
-- So we need to delete the previously created polylines for these ways first.
|
||
|
|
DELETE FROM way_geometry WHERE way_id IN
|
||
|
|
( SELECT ways.id FROM ways
|
||
|
|
WHERE ST_IsClosed( (SELECT ST_LineFromMultiPoint( Collect(n.geom) ) FROM nodes n LEFT JOIN way_nodes wn ON n.id=wn.node_id WHERE ways.id=wn.way_id) )
|
||
|
|
AND ST_NumPoints( (SELECT ST_LineFromMultiPoint( Collect(n.geom) ) FROM nodes n LEFT JOIN way_nodes wn ON n.id=wn.node_id WHERE ways.id=wn.way_id) ) >= 3
|
||
|
|
)
|
||
|
|
;
|
||
|
|
|
||
|
|
-- now we need to add the polyline geometry for every closed way
|
||
|
|
INSERT INTO way_geometry SELECT ways.id,
|
||
|
|
( SELECT ST_MakePolygon( ST_LineFromMultiPoint(Collect(nodes.geom)) ) FROM nodes
|
||
|
|
LEFT JOIN way_nodes ON nodes.id=way_nodes.node_id WHERE way_nodes.way_id=ways.id
|
||
|
|
)
|
||
|
|
FROM ways
|
||
|
|
WHERE ST_IsClosed( (SELECT ST_LineFromMultiPoint( Collect(n.geom) ) FROM nodes n LEFT JOIN way_nodes wn ON n.id=wn.node_id WHERE ways.id=wn.way_id) )
|
||
|
|
AND ST_NumPoints( (SELECT ST_LineFromMultiPoint( Collect(n.geom) ) FROM nodes n LEFT JOIN way_nodes wn ON n.id=wn.node_id WHERE ways.id=wn.way_id) ) >= 3
|
||
|
|
;
|
||
|
|
-------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
-- create index on way_geometry
|
||
|
|
CREATE INDEX idx_way_geometry_way_id ON way_geometry USING btree (way_id);
|
||
|
|
CREATE INDEX idx_way_geometry_geom ON way_geometry USING gist (geom);
|