1817 lines
54 KiB
PL/PgSQL
1817 lines
54 KiB
PL/PgSQL
--DO NOT MODIFY THIS FILE, IT IS GENERATED AUTOMATICALLY FROM SOURCES
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-- Complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "CREATE EXTENSION observatory" to load this file. \quit
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-- Version number of the extension release
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CREATE OR REPLACE FUNCTION cdb_observatory_version()
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RETURNS text AS $$
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SELECT '1.0.1'::text;
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$$ language 'sql' STABLE STRICT;
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-- Internal identifier of the installed extension instence
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-- e.g. 'dev' for current development version
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CREATE OR REPLACE FUNCTION _cdb_observatory_internal_version()
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RETURNS text AS $$
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SELECT installed_version FROM pg_available_extensions where name='observatory' and pg_available_extensions IS NOT NULL;
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$$ language 'sql' STABLE STRICT;
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-- Returns the table name with geoms for the given geometry_id
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-- TODO probably needs to take in the column_id array to get the relevant
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-- table where there is multiple sources for a column from multiple
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-- geometries.
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GeomTable(
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geom geometry(Geometry, 4326),
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geometry_id text,
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time_span text DEFAULT NULL
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)
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RETURNS TEXT
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AS $$
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DECLARE
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result text;
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BEGIN
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EXECUTE '
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SELECT tablename FROM observatory.OBS_table
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WHERE id IN (
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SELECT table_id
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FROM observatory.OBS_table tab,
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observatory.OBS_column_table coltable,
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observatory.OBS_column col
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WHERE type ILIKE ''geometry''
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AND coltable.column_id = col.id
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AND coltable.table_id = tab.id
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AND col.id = $1
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AND CASE WHEN $3::TEXT IS NOT NULL THEN timespan ILIKE $3::TEXT ELSE TRUE END
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ORDER BY timespan DESC LIMIT 1
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)
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'
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USING geometry_id, geom, time_span
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INTO result;
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return result;
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END;
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$$ LANGUAGE plpgsql;
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-- A function that gets the column data for multiple columns
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-- Old: OBS_GetColumnData
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetColumnData(
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geometry_id text,
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column_ids text[],
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timespan text
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)
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RETURNS SETOF JSON
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AS $$
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BEGIN
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-- figure out highest-weight geometry_id/timespan pair for the first data column
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-- TODO this should be done for each data column separately
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IF geometry_id IS NULL OR timespan IS NULL THEN
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EXECUTE '
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SELECT data_t.timespan timespan, geom_c.id boundary_id
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FROM observatory.obs_table data_t,
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observatory.obs_column_table data_ct,
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observatory.obs_column data_c,
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observatory.obs_column_table geoid_ct,
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observatory.obs_column_to_column c2c,
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observatory.obs_column geom_c
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WHERE data_c.id = $2
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AND data_ct.column_id = data_c.id
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AND data_ct.table_id = data_t.id
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AND geoid_ct.table_id = data_t.id
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AND geoid_ct.column_id = c2c.source_id
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AND c2c.reltype = ''geom_ref''
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AND geom_c.id = c2c.target_id
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AND CASE WHEN $3 IS NULL THEN True ELSE $3 = timespan END
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AND CASE WHEN $1 IS NULL THEN True ELSE $1 = geom_c.id END
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ORDER BY geom_c.weight DESC,
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data_t.timespan DESC
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LIMIT 1
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' INTO timespan, geometry_id
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USING geometry_id, (column_ids)[1], timespan;
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END IF;
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RETURN QUERY
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EXECUTE '
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WITH geomref AS (
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SELECT ct.table_id id
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FROM observatory.OBS_column_to_column c2c,
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observatory.OBS_column_table ct
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WHERE c2c.reltype = ''geom_ref''
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AND c2c.target_id = $1
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AND c2c.source_id = ct.column_id
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),
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column_ids as (
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select row_number() over () as no, a.column_id as column_id from (select unnest($2) as column_id) a
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)
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SELECT row_to_json(a) from (
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select colname,
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tablename,
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aggregate,
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name,
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type,
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c.description,
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$1 AS boundary_id
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FROM column_ids, observatory.OBS_column c, observatory.OBS_column_table ct, observatory.OBS_table t
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WHERE column_ids.column_id = c.id
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AND c.id = ct.column_id
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AND t.id = ct.table_id
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AND t.timespan = $3
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AND t.id in (SELECT id FROM geomref)
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order by column_ids.no
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) a
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'
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USING geometry_id, column_ids, timespan
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RETURN;
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END;
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$$ LANGUAGE plpgsql;
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--Test point cause Stuart always seems to make random points in the water
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CREATE OR REPLACE FUNCTION cdb_observatory._TestPoint()
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RETURNS geometry(Point, 4326)
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AS $$
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BEGIN
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-- new york city
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RETURN ST_SetSRID(ST_Point( -73.936669, 40.704512), 4326);
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END;
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$$ LANGUAGE plpgsql;
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--Test polygon cause Stuart always seems to make random points in the water
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-- TODO: remove as it's not used anywhere?
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CREATE OR REPLACE FUNCTION cdb_observatory._TestArea()
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RETURNS geometry(Geometry, 4326)
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AS $$
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BEGIN
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-- Buffer NYC point by 500 meters
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RETURN ST_Buffer(cdb_observatory._TestPoint()::geography, 500)::geometry;
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END;
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$$ LANGUAGE plpgsql;
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--Used to expand a column based response to a table based one. Give it the desired
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--columns and it will return a partial query for rolling them out to a table.
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_BuildSnapshotQuery(names text[])
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RETURNS TEXT
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AS $$
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DECLARE
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q text;
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i numeric;
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BEGIN
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q := 'SELECT ';
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FOR i IN 1..array_upper(names,1)
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LOOP
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q = q || format(' vals[%s] As %I', i, names[i]);
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IF i < array_upper(names, 1) THEN
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q= q || ',';
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END IF;
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END LOOP;
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RETURN q;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetRelatedColumn(columns_ids text[], reltype text )
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RETURNS TEXT[]
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AS $$
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DECLARE
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result TEXT[];
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BEGIN
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EXECUTE '
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With ids as (
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select row_number() over() as no, id from (select unnest($1) as id) t
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)
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select array_agg(target_id order by no)
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FROM ids
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LEFT JOIN observatory.obs_column_to_column
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on source_id = id
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where reltype = $2 or reltype is null
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'
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INTO result
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using columns_ids, reltype;
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return result;
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END;
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$$ LANGUAGE plpgsql;
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-- Function that replaces all non digits or letters with _ trims and lowercases the
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-- passed measure name
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_StandardizeMeasureName(measure_name text)
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RETURNS text
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AS $$
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DECLARE
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result text;
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BEGIN
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-- Turn non letter or digits to _
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result = regexp_replace(measure_name, '[^\dA-Za-z]+','_', 'g');
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-- Remove duplicate _'s
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result = regexp_replace(result,'_{2,}','_', 'g');
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-- Trim _'s from beginning and end
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result = trim(both '_' from result);
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result = lower(result);
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RETURN result;
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END;
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$$ LANGUAGE plpgsql;
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-- Function that returns the currently deployed obs_dump_version from the
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-- remote table of the same name.
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CREATE OR REPLACE FUNCTION cdb_observatory.OBS_DumpVersion(
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)
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RETURNS TEXT
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AS $$
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DECLARE
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result text;
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BEGIN
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EXECUTE '
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SELECT MAX(dump_id) FROM observatory.obs_dump_version
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' INTO result;
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RETURN result;
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END;
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$$ LANGUAGE plpgsql;
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--For Longer term Dev
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--Break out table definitions to types
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--Automate type creation from a script, something like
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----CREATE OR REPLACE FUNCTION OBS_Get<%=tag_name%>(geom GEOMETRY)
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----RETURNS TABLE(
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----<%=get_dimensions_for_tag(tag_name)%>
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----AS $$
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----DECLARE
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----target_cols text[];
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----names text[];
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----vals NUMERIC[];-
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----q text;
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----BEGIN
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----target_cols := Array[<%=get_dimensions_for_tag(tag_name)%>],
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--Functions for augmenting specific tables
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--------------------------------------------------------------------------------
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-- Creates a table of demographic snapshot
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CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetDemographicSnapshot(geom geometry(Geometry, 4326),
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time_span text DEFAULT NULL,
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boundary_id text DEFAULT NULL)
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RETURNS SETOF JSON
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AS $$
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DECLARE
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target_cols text[];
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BEGIN
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IF time_span IS NULL THEN
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time_span = '2010 - 2014';
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END IF;
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IF boundary_id IS NULL THEN
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boundary_id = 'us.census.tiger.block_group';
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END IF;
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target_cols := Array['us.census.acs.B01003001',
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'us.census.acs.B01001002',
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'us.census.acs.B01001026',
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'us.census.acs.B01002001',
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'us.census.acs.B03002003',
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'us.census.acs.B03002004',
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'us.census.acs.B03002006',
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'us.census.acs.B03002012',
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'us.census.acs.B03002005',
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'us.census.acs.B03002008',
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'us.census.acs.B03002009',
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'us.census.acs.B03002002',
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--'not_us_citizen_pop',
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--'workers_16_and_over',
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--'commuters_by_car_truck_van',
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--'commuters_drove_alone',
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--'commuters_by_carpool',
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--'commuters_by_public_transportation',
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--'commuters_by_bus',
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--'commuters_by_subway_or_elevated',
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--'walked_to_work',
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--'worked_at_home',
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--'children',
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'us.census.acs.B11001001',
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--'population_3_years_over',
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--'in_school',
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--'in_grades_1_to_4',
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--'in_grades_5_to_8',
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--'in_grades_9_to_12',
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--'in_undergrad_college',
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'us.census.acs.B15003001',
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'us.census.acs.B15003017',
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'us.census.acs.B15003019',
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'us.census.acs.B15003020',
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'us.census.acs.B15003021',
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'us.census.acs.B15003022',
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'us.census.acs.B15003023',
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--'pop_5_years_over',
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--'speak_only_english_at_home',
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--'speak_spanish_at_home',
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--'pop_determined_poverty_status',
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--'poverty',
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'us.census.acs.B19013001',
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'us.census.acs.B19083001',
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'us.census.acs.B19301001',
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'us.census.acs.B25001001',
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'us.census.acs.B25002003',
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'us.census.acs.B25004002',
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'us.census.acs.B25004004',
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'us.census.acs.B25058001',
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'us.census.acs.B25071001',
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'us.census.acs.B25075001',
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'us.census.acs.B25075025',
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'us.census.acs.B25081002',
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--'pop_15_and_over',
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--'pop_never_married',
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--'pop_now_married',
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--'pop_separated',
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--'pop_widowed',
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--'pop_divorced',
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'us.census.acs.B08134001',
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'us.census.acs.B08134002',
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'us.census.acs.B08134003',
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'us.census.acs.B08134004',
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'us.census.acs.B08134005',
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'us.census.acs.B08134006',
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'us.census.acs.B08134007',
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'us.census.acs.B08134008',
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'us.census.acs.B08134009',
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'us.census.acs.B08134010',
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'us.census.acs.B08135001',
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'us.census.acs.B19001002',
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'us.census.acs.B19001003',
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'us.census.acs.B19001004',
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'us.census.acs.B19001005',
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'us.census.acs.B19001006',
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'us.census.acs.B19001007',
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'us.census.acs.B19001008',
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'us.census.acs.B19001009',
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'us.census.acs.B19001010',
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'us.census.acs.B19001011',
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'us.census.acs.B19001012',
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'us.census.acs.B19001013',
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'us.census.acs.B19001014',
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'us.census.acs.B19001015',
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'us.census.acs.B19001016',
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'us.census.acs.B19001017'];
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RETURN QUERY
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EXECUTE
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'select * from cdb_observatory._OBS_Get($1, $2, $3, $4 )'
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USING geom, target_cols, time_span, boundary_id
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RETURN;
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END;
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$$ LANGUAGE plpgsql;
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|
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--Base functions for performing augmentation
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----------------------------------------------------------------------------------------
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-- Base augmentation fucntion.
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_Get(
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geom geometry(Geometry, 4326),
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column_ids text[],
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time_span text,
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geometry_level text
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)
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RETURNS SETOF JSON
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AS $$
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DECLARE
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results json[];
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geom_table_name text;
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names text[];
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query text;
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data_table_info json[];
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BEGIN
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EXECUTE
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'SELECT array_agg(_obs_getcolumndata)
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FROM cdb_observatory._OBS_GetColumnData($1, $2, $3);'
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INTO data_table_info
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USING geometry_level, column_ids, time_span;
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IF geometry_level IS NULL THEN
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geometry_level = data_table_info[1]->>'boundary_id';
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END IF;
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geom_table_name := cdb_observatory._OBS_GeomTable(geom, geometry_level);
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IF geom_table_name IS NULL
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THEN
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RAISE NOTICE 'Point % is outside of the data region', ST_AsText(geom);
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-- TODO this should return JSON
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RETURN QUERY SELECT '{}'::json;
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RETURN;
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END IF;
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|
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IF data_table_info IS NULL THEN
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RAISE NOTICE 'Cannot find data table for boundary ID %, column_ids %, and time_span %', geometry_level, column_ids, time_span;
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END IF;
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IF ST_GeometryType(geom) = 'ST_Point'
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THEN
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RAISE NOTICE 'geom_table_name %, data_table_info %', geom_table_name, data_table_info::json[];
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results := cdb_observatory._OBS_GetPoints(geom,
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geom_table_name,
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data_table_info);
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ELSIF ST_GeometryType(geom) IN ('ST_Polygon', 'ST_MultiPolygon')
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THEN
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results := cdb_observatory._OBS_GetPolygons(geom,
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geom_table_name,
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data_table_info);
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END IF;
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RETURN QUERY
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EXECUTE
|
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$query$
|
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SELECT unnest($1)
|
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$query$
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USING results;
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RETURN;
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|
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END;
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$$ LANGUAGE plpgsql;
|
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|
|
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-- If the variable of interest is just a rate return it as such,
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-- otherwise normalize it to the census block area and return that
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CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetPoints(
|
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geom geometry(Geometry, 4326),
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geom_table_name text, -- TODO: change to boundary_id
|
|
data_table_info json[]
|
|
)
|
|
RETURNS json[]
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AS $$
|
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DECLARE
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result NUMERIC[];
|
|
json_result json[];
|
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query text;
|
|
i int;
|
|
geoid text;
|
|
data_geoid_colname text;
|
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geom_geoid_colname text;
|
|
area NUMERIC;
|
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BEGIN
|
|
|
|
-- TODO we're assuming our geom_table has only one geom_ref column
|
|
-- we *really* should pass in both geom_table_name and boundary_id
|
|
-- TODO tablename should not be passed here (use boundary_id)
|
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EXECUTE
|
|
format('SELECT ct.colname
|
|
FROM observatory.obs_column_to_column c2c,
|
|
observatory.obs_column_table ct,
|
|
observatory.obs_table t
|
|
WHERE c2c.reltype = ''geom_ref''
|
|
AND ct.column_id = c2c.source_id
|
|
AND ct.table_id = t.id
|
|
AND t.tablename = %L'
|
|
, (data_table_info)[1]->>'tablename')
|
|
INTO data_geoid_colname;
|
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EXECUTE
|
|
format('SELECT ct.colname
|
|
FROM observatory.obs_column_to_column c2c,
|
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observatory.obs_column_table ct,
|
|
observatory.obs_table t
|
|
WHERE c2c.reltype = ''geom_ref''
|
|
AND ct.column_id = c2c.source_id
|
|
AND ct.table_id = t.id
|
|
AND t.tablename = %L'
|
|
, geom_table_name)
|
|
INTO geom_geoid_colname;
|
|
|
|
EXECUTE
|
|
format('SELECT %I
|
|
FROM observatory.%I
|
|
WHERE ST_Within($1, the_geom)',
|
|
geom_geoid_colname,
|
|
geom_table_name)
|
|
USING geom
|
|
INTO geoid;
|
|
|
|
RAISE NOTICE 'geoid is %, geometry table is % ', geoid, geom_table_name;
|
|
|
|
EXECUTE
|
|
format('SELECT ST_Area(the_geom::geography) / (1000 * 1000)
|
|
FROM observatory.%I
|
|
WHERE %I = %L',
|
|
geom_table_name,
|
|
geom_geoid_colname,
|
|
geoid)
|
|
INTO area;
|
|
|
|
IF area IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No geometry at %', ST_AsText(geom);
|
|
END IF;
|
|
|
|
query := 'SELECT Array[';
|
|
FOR i IN 1..array_upper(data_table_info, 1)
|
|
LOOP
|
|
IF area is NULL OR area = 0
|
|
THEN
|
|
-- give back null values
|
|
query := query || format('NULL::numeric ');
|
|
ELSIF ((data_table_info)[i])->>'aggregate' != 'sum'
|
|
THEN
|
|
-- give back full variable
|
|
query := query || format('%I ', ((data_table_info)[i])->>'colname');
|
|
ELSE
|
|
-- give back variable normalized by area of geography
|
|
query := query || format('%I/%s ',
|
|
((data_table_info)[i])->>'colname',
|
|
area);
|
|
END IF;
|
|
|
|
IF i < array_upper(data_table_info, 1)
|
|
THEN
|
|
query := query || ',';
|
|
END IF;
|
|
END LOOP;
|
|
|
|
query := query || format(' ]::numeric[]
|
|
FROM observatory.%I
|
|
WHERE %I.%I = %L
|
|
',
|
|
((data_table_info)[1])->>'tablename',
|
|
((data_table_info)[1])->>'tablename',
|
|
data_geoid_colname,
|
|
geoid
|
|
);
|
|
|
|
EXECUTE
|
|
query
|
|
INTO result
|
|
USING geom;
|
|
|
|
EXECUTE
|
|
$query$
|
|
SELECT array_agg(row_to_json(t)) FROM (
|
|
SELECT values As value,
|
|
meta->>'name' As name,
|
|
meta->>'tablename' As tablename,
|
|
meta->>'aggregate' As aggregate,
|
|
meta->>'type' As type,
|
|
meta->>'description' As description
|
|
FROM (SELECT unnest($1) As values, unnest($2) As meta) b
|
|
) t
|
|
$query$
|
|
INTO json_result
|
|
USING result, data_table_info;
|
|
|
|
RETURN json_result;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetMeasure(
|
|
geom geometry(Geometry, 4326),
|
|
measure_id TEXT,
|
|
normalize TEXT DEFAULT 'area', -- TODO none/null
|
|
boundary_id TEXT DEFAULT NULL,
|
|
time_span TEXT DEFAULT NULL
|
|
)
|
|
RETURNS NUMERIC
|
|
AS $$
|
|
DECLARE
|
|
result NUMERIC;
|
|
measure_ids TEXT[];
|
|
denominator_id TEXT;
|
|
vals NUMERIC[];
|
|
BEGIN
|
|
|
|
IF normalize ILIKE 'area' THEN
|
|
measure_ids := ARRAY[measure_id];
|
|
ELSIF normalize ILIKE 'denominator' THEN
|
|
EXECUTE 'SELECT (cdb_observatory._OBS_GetRelatedColumn(ARRAY[$1], ''denominator''))[1]
|
|
' INTO denominator_id
|
|
USING measure_id;
|
|
measure_ids := ARRAY[measure_id, denominator_id];
|
|
ELSIF normalize ILIKE 'none' THEN
|
|
-- TODO we need a switch on obs_get to disable area normalization
|
|
RAISE EXCEPTION 'No normalization not yet supported.';
|
|
ELSE
|
|
RAISE EXCEPTION 'Only valid inputs for "normalize" are "area" (default) and "denominator".';
|
|
END IF;
|
|
|
|
EXECUTE '
|
|
SELECT ARRAY_AGG(val) FROM (SELECT (cdb_observatory._OBS_Get($1, $2, $3, $4)->>''value'')::NUMERIC val) b
|
|
'
|
|
INTO vals
|
|
USING geom, measure_ids, time_span, boundary_id;
|
|
|
|
IF normalize ILIKE 'denominator' THEN
|
|
RETURN (vals)[1]/(vals)[2];
|
|
ELSE
|
|
RETURN (vals)[1];
|
|
END IF;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetMeasureById(
|
|
geom_ref TEXT,
|
|
measure_id TEXT,
|
|
boundary_id TEXT,
|
|
time_span TEXT DEFAULT NULL
|
|
)
|
|
RETURNS NUMERIC
|
|
AS $$
|
|
DECLARE
|
|
target_table TEXT;
|
|
colname TEXT;
|
|
measure_val NUMERIC;
|
|
data_geoid_colname TEXT;
|
|
test_query TEXT;
|
|
BEGIN
|
|
|
|
SELECT x ->> 'colname', x ->> 'tablename' INTO colname, target_table
|
|
FROM cdb_observatory._OBS_GetColumnData(boundary_id, Array[measure_id], time_span) As x;
|
|
|
|
EXECUTE
|
|
format('SELECT ct.colname
|
|
FROM observatory.obs_column_to_column c2c,
|
|
observatory.obs_column_table ct,
|
|
observatory.obs_table t
|
|
WHERE c2c.reltype = ''geom_ref''
|
|
AND ct.column_id = c2c.source_id
|
|
AND ct.table_id = t.id
|
|
AND t.tablename = %L'
|
|
, target_table)
|
|
INTO data_geoid_colname;
|
|
|
|
RAISE DEBUG 'target_table %, colname %', target_table, colname;
|
|
|
|
EXECUTE format(
|
|
'SELECT %I
|
|
FROM observatory.%I
|
|
WHERE %I.%I = %L',
|
|
colname,
|
|
target_table,
|
|
target_table, data_geoid_colname, geom_ref)
|
|
INTO measure_val;
|
|
|
|
RETURN measure_val;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetCategory(
|
|
geom geometry(Geometry, 4326),
|
|
category_id TEXT,
|
|
boundary_id TEXT DEFAULT NULL,
|
|
time_span TEXT DEFAULT NULL
|
|
)
|
|
RETURNS TEXT
|
|
AS $$
|
|
DECLARE
|
|
denominator_id TEXT;
|
|
categories TEXT[];
|
|
BEGIN
|
|
|
|
IF boundary_id IS NULL THEN
|
|
-- TODO we should determine best boundary for this geom
|
|
boundary_id := 'us.census.tiger.census_tract';
|
|
END IF;
|
|
|
|
IF time_span IS NULL THEN
|
|
-- TODO we should determine latest timespan for this measure
|
|
time_span := '2010 - 2014';
|
|
END IF;
|
|
|
|
EXECUTE '
|
|
SELECT ARRAY_AGG(val) FROM (SELECT (cdb_observatory._OBS_GetCategories($1, $2, $3, $4))->>''category'' val LIMIT 1) b
|
|
'
|
|
INTO categories
|
|
USING geom, ARRAY[category_id], boundary_id, time_span;
|
|
|
|
RETURN (categories)[1];
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetUSCensusMeasure(
|
|
geom geometry(Geometry, 4326),
|
|
name TEXT,
|
|
normalize TEXT DEFAULT 'area',
|
|
boundary_id TEXT DEFAULT NULL,
|
|
time_span TEXT DEFAULT NULL
|
|
)
|
|
RETURNS NUMERIC AS $$
|
|
DECLARE
|
|
standardized_name text;
|
|
measure_id text;
|
|
result NUMERIC;
|
|
BEGIN
|
|
standardized_name = cdb_observatory._OBS_StandardizeMeasureName(name);
|
|
|
|
EXECUTE $string$
|
|
SELECT c.id
|
|
FROM observatory.obs_column c
|
|
JOIN observatory.obs_column_tag ct
|
|
ON c.id = ct.column_id
|
|
WHERE cdb_observatory._OBS_StandardizeMeasureName(c.name) = $1
|
|
AND ct.tag_id ILIKE 'us.census%'
|
|
$string$
|
|
INTO measure_id
|
|
USING standardized_name;
|
|
|
|
EXECUTE 'SELECT cdb_observatory.OBS_GetMeasure($1, $2, $3, $4, $5)'
|
|
INTO result
|
|
USING geom, measure_id, normalize, boundary_id, time_span;
|
|
RETURN result;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetUSCensusCategory(
|
|
geom geometry(Geometry, 4326),
|
|
name TEXT,
|
|
boundary_id TEXT DEFAULT NULL,
|
|
time_span TEXT DEFAULT NULL
|
|
)
|
|
RETURNS TEXT AS $$
|
|
DECLARE
|
|
standardized_name text;
|
|
category_id text;
|
|
result TEXT;
|
|
BEGIN
|
|
standardized_name = cdb_observatory._OBS_StandardizeMeasureName(name);
|
|
|
|
EXECUTE $string$
|
|
SELECT c.id
|
|
FROM observatory.obs_column c
|
|
--JOIN observatory.obs_column_tag ct
|
|
-- ON c.id = ct.column_id
|
|
WHERE cdb_observatory._OBS_StandardizeMeasureName(c.name) = $1
|
|
AND c.type ILIKE 'TEXT'
|
|
AND c.id ILIKE 'us.census%' -- TODO this should be done by tag
|
|
--AND ct.tag_id = 'us.census.acs.demographics'
|
|
$string$
|
|
INTO category_id
|
|
USING standardized_name;
|
|
|
|
EXECUTE 'SELECT cdb_observatory.OBS_GetCategory($1, $2, $3, $4)'
|
|
INTO result
|
|
USING geom, category_id, boundary_id, time_span;
|
|
RETURN result;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetPopulation(
|
|
geom geometry(Geometry, 4326),
|
|
normalize TEXT DEFAULT 'area',
|
|
boundary_id TEXT DEFAULT NULL,
|
|
time_span TEXT DEFAULT NULL
|
|
)
|
|
RETURNS NUMERIC
|
|
AS $$
|
|
DECLARE
|
|
population_measure_id TEXT;
|
|
result NUMERIC;
|
|
BEGIN
|
|
-- TODO use a super-column for global pop
|
|
population_measure_id := 'us.census.acs.B01003001';
|
|
|
|
EXECUTE format('SELECT cdb_observatory.OBS_GetMeasure(
|
|
%L, %L, %L, %L, %L
|
|
) LIMIT 1', geom, population_measure_id, normalize, boundary_id, time_span)
|
|
INTO result;
|
|
|
|
return result;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetPolygons(
|
|
geom geometry(Geometry, 4326),
|
|
geom_table_name text,
|
|
data_table_info json[]
|
|
)
|
|
RETURNS json[]
|
|
AS $$
|
|
DECLARE
|
|
result numeric[];
|
|
json_result json[];
|
|
q_select text;
|
|
q_sum text;
|
|
q text;
|
|
i NUMERIC;
|
|
data_geoid_colname text;
|
|
geom_geoid_colname text;
|
|
BEGIN
|
|
|
|
-- TODO we're assuming our geom_table has only one geom_ref column
|
|
-- we *really* should pass in both geom_table_name and boundary_id
|
|
-- TODO tablename should not be passed here (use boundary_id)
|
|
EXECUTE
|
|
format('SELECT ct.colname
|
|
FROM observatory.obs_column_to_column c2c,
|
|
observatory.obs_column_table ct,
|
|
observatory.obs_table t
|
|
WHERE c2c.reltype = ''geom_ref''
|
|
AND ct.column_id = c2c.source_id
|
|
AND ct.table_id = t.id
|
|
AND t.tablename = %L'
|
|
, (data_table_info)[1]->>'tablename')
|
|
INTO data_geoid_colname;
|
|
EXECUTE
|
|
format('SELECT ct.colname
|
|
FROM observatory.obs_column_to_column c2c,
|
|
observatory.obs_column_table ct,
|
|
observatory.obs_table t
|
|
WHERE c2c.reltype = ''geom_ref''
|
|
AND ct.column_id = c2c.source_id
|
|
AND ct.table_id = t.id
|
|
AND t.tablename = %L'
|
|
, geom_table_name)
|
|
INTO geom_geoid_colname;
|
|
|
|
q_select := format('SELECT %I, ', data_geoid_colname);
|
|
q_sum := 'SELECT Array[';
|
|
|
|
FOR i IN 1..array_upper(data_table_info, 1)
|
|
LOOP
|
|
q_select := q_select || format( '%I ', ((data_table_info)[i])->>'colname');
|
|
|
|
IF ((data_table_info)[i])->>'aggregate' ='sum'
|
|
THEN
|
|
q_sum := q_sum || format('sum(overlap_fraction * COALESCE(%I, 0)) ',((data_table_info)[i])->>'colname',((data_table_info)[i])->>'colname');
|
|
ELSE
|
|
q_sum := q_sum || ' NULL::numeric ';
|
|
END IF;
|
|
|
|
IF i < array_upper(data_table_info,1)
|
|
THEN
|
|
q_select := q_select || format(',');
|
|
q_sum := q_sum || format(',');
|
|
END IF;
|
|
END LOOP;
|
|
|
|
q := format('
|
|
WITH _overlaps As (
|
|
SELECT ST_Area(
|
|
ST_Intersection($1, a.the_geom)
|
|
) / ST_Area(a.the_geom) As overlap_fraction,
|
|
%I
|
|
FROM observatory.%I As a
|
|
WHERE $1 && a.the_geom
|
|
),
|
|
values As (
|
|
', geom_geoid_colname, geom_table_name);
|
|
|
|
q := q || q_select || format('FROM observatory.%I ', ((data_table_info)[1]->>'tablename'));
|
|
|
|
q := format(q || ' ) ' || q_sum || ' ]::numeric[] FROM _overlaps, values
|
|
WHERE values.%I = _overlaps.%I', data_geoid_colname, geom_geoid_colname);
|
|
|
|
EXECUTE
|
|
q
|
|
INTO result
|
|
USING geom;
|
|
|
|
EXECUTE
|
|
$query$
|
|
SELECT array_agg(row_to_json(t)) FROM (
|
|
SELECT values As value,
|
|
meta->>'name' As name,
|
|
meta->>'tablename' As tablename,
|
|
meta->>'aggregate' As aggregate,
|
|
meta->>'type' As type,
|
|
meta->>'description' As description
|
|
FROM (SELECT unnest($1) As values, unnest($2) As meta) b
|
|
) t
|
|
$query$
|
|
INTO json_result
|
|
USING result, data_table_info;
|
|
|
|
RETURN json_result;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetSegmentSnapshot(
|
|
geom geometry(Geometry, 4326),
|
|
boundary_id text DEFAULT NULL
|
|
)
|
|
RETURNS JSON
|
|
AS $$
|
|
DECLARE
|
|
target_cols text[];
|
|
result json;
|
|
seg_name Text;
|
|
geom_id Text;
|
|
q Text;
|
|
segment_names Text[];
|
|
BEGIN
|
|
IF boundary_id IS NULL THEN
|
|
boundary_id = 'us.census.tiger.census_tract';
|
|
END IF;
|
|
target_cols := Array[
|
|
'us.census.acs.B01003001_quantile',
|
|
'us.census.acs.B01001002_quantile',
|
|
'us.census.acs.B01001026_quantile',
|
|
'us.census.acs.B01002001_quantile',
|
|
'us.census.acs.B03002003_quantile',
|
|
'us.census.acs.B03002004_quantile',
|
|
'us.census.acs.B03002006_quantile',
|
|
'us.census.acs.B03002012_quantile',
|
|
'us.census.acs.B05001006_quantile',--
|
|
'us.census.acs.B08006001_quantile',--
|
|
'us.census.acs.B08006002_quantile',--
|
|
'us.census.acs.B08006008_quantile',--
|
|
'us.census.acs.B08006009_quantile',--
|
|
'us.census.acs.B08006011_quantile',--
|
|
'us.census.acs.B08006015_quantile',--
|
|
'us.census.acs.B08006017_quantile',--
|
|
'us.census.acs.B09001001_quantile',--
|
|
'us.census.acs.B11001001_quantile',
|
|
'us.census.acs.B14001001_quantile',--
|
|
'us.census.acs.B14001002_quantile',--
|
|
'us.census.acs.B14001005_quantile',--
|
|
'us.census.acs.B14001006_quantile',--
|
|
'us.census.acs.B14001007_quantile',--
|
|
'us.census.acs.B14001008_quantile',--
|
|
'us.census.acs.B15003001_quantile',
|
|
'us.census.acs.B15003017_quantile',
|
|
'us.census.acs.B15003022_quantile',
|
|
'us.census.acs.B15003023_quantile',
|
|
'us.census.acs.B16001001_quantile',--
|
|
'us.census.acs.B16001002_quantile',--
|
|
'us.census.acs.B16001003_quantile',--
|
|
'us.census.acs.B17001001_quantile',--
|
|
'us.census.acs.B17001002_quantile',--
|
|
'us.census.acs.B19013001_quantile',
|
|
'us.census.acs.B19083001_quantile',
|
|
'us.census.acs.B19301001_quantile',
|
|
'us.census.acs.B25001001_quantile',
|
|
'us.census.acs.B25002003_quantile',
|
|
'us.census.acs.B25004002_quantile',
|
|
'us.census.acs.B25004004_quantile',
|
|
'us.census.acs.B25058001_quantile',
|
|
'us.census.acs.B25071001_quantile',
|
|
'us.census.acs.B25075001_quantile',
|
|
'us.census.acs.B25075025_quantile'
|
|
];
|
|
|
|
EXECUTE
|
|
$query$
|
|
SELECT array_agg(_OBS_GetCategories->>'category')
|
|
FROM cdb_observatory._OBS_GetCategories(
|
|
$1,
|
|
Array['us.census.spielman_singleton_segments.X10', 'us.census.spielman_singleton_segments.X55'],
|
|
$2)
|
|
$query$
|
|
INTO segment_names
|
|
USING geom, boundary_id;
|
|
|
|
q :=
|
|
format($query$
|
|
WITH a As (
|
|
SELECT
|
|
array_agg(_OBS_GET->>'name') As names,
|
|
array_agg(_OBS_GET->>'value') As vals
|
|
FROM cdb_observatory._OBS_Get($1,
|
|
$2,
|
|
'2010 - 2014',
|
|
$3)
|
|
|
|
), percentiles As (
|
|
%s
|
|
FROM a)
|
|
SELECT row_to_json(r) FROM
|
|
( SELECT $4 as x10_segment, $5 as x55_segment, percentiles.*
|
|
FROM percentiles) r
|
|
$query$, cdb_observatory._OBS_BuildSnapshotQuery(target_cols)) results;
|
|
|
|
|
|
EXECUTE
|
|
q
|
|
into result
|
|
USING geom, target_cols, boundary_id, segment_names[1], segment_names[2];
|
|
|
|
return result;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
--Get categorical variables from point
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetCategories(
|
|
geom geometry(Geometry, 4326),
|
|
dimension_names text[],
|
|
boundary_id text DEFAULT NULL,
|
|
time_span text DEFAULT NULL
|
|
)
|
|
RETURNS SETOF JSON as $$
|
|
DECLARE
|
|
geom_table_name text;
|
|
geoid text;
|
|
names text[];
|
|
results text[];
|
|
query text;
|
|
data_table_info json[];
|
|
BEGIN
|
|
|
|
IF time_span IS NULL THEN
|
|
time_span = '2010 - 2014';
|
|
END IF;
|
|
|
|
IF boundary_id IS NULL THEN
|
|
boundary_id = 'us.census.tiger.block_group';
|
|
END IF;
|
|
|
|
geom_table_name := cdb_observatory._OBS_GeomTable(geom, boundary_id);
|
|
|
|
IF geom_table_name IS NULL
|
|
THEN
|
|
RAISE NOTICE 'Point % is outside of the data region', ST_AsText(geom);
|
|
RETURN QUERY SELECT '{}'::text[], '{}'::text[];
|
|
RETURN;
|
|
END IF;
|
|
|
|
EXECUTE '
|
|
SELECT array_agg(_obs_getcolumndata)
|
|
FROM cdb_observatory._OBS_GetColumnData($1, $2, $3);
|
|
'
|
|
INTO data_table_info
|
|
USING boundary_id, dimension_names, time_span;
|
|
|
|
IF data_table_info IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No data table found for this location';
|
|
RETURN QUERY SELECT NULL::json;
|
|
RETURN;
|
|
END IF;
|
|
|
|
EXECUTE
|
|
format('SELECT geoid
|
|
FROM observatory.%I
|
|
WHERE the_geom && $1',
|
|
geom_table_name)
|
|
USING geom
|
|
INTO geoid;
|
|
|
|
IF geoid IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No geometry id for this location';
|
|
RETURN QUERY SELECT NULL::json;
|
|
RETURN;
|
|
END IF;
|
|
|
|
query := 'SELECT ARRAY[';
|
|
|
|
FOR i IN 1..array_upper(data_table_info, 1)
|
|
LOOP
|
|
query = query || format('%I ', lower(((data_table_info)[i])->>'colname'));
|
|
IF i < array_upper(data_table_info, 1)
|
|
THEN
|
|
query := query || ',';
|
|
END IF;
|
|
END LOOP;
|
|
|
|
query := query || format(' ]::text[]
|
|
FROM observatory.%I
|
|
WHERE %I.geoid = %L
|
|
',
|
|
((data_table_info)[1])->>'tablename',
|
|
((data_table_info)[1])->>'tablename',
|
|
geoid
|
|
);
|
|
|
|
EXECUTE
|
|
query
|
|
INTO results
|
|
USING geom;
|
|
|
|
RETURN QUERY
|
|
EXECUTE
|
|
$query$
|
|
SELECT row_to_json(t) FROM (
|
|
SELECT categories As category,
|
|
meta->>'name' As name,
|
|
meta->>'tablename' As tablename,
|
|
meta->>'aggregate' As aggregate,
|
|
meta->>'type' As type,
|
|
meta->>'description' As description
|
|
FROM (SELECT unnest($1) As categories,
|
|
unnest($2) As meta) As b
|
|
) t
|
|
$query$
|
|
USING results, data_table_info;
|
|
RETURN;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
-- return a table that contains a string match based on input
|
|
-- TODO: implement search for timespan
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_SearchTables(
|
|
search_term text,
|
|
time_span text DEFAULT NULL
|
|
)
|
|
RETURNS table(tablename text, timespan text)
|
|
As $$
|
|
DECLARE
|
|
out_var text[];
|
|
BEGIN
|
|
|
|
IF time_span IS NULL
|
|
THEN
|
|
RETURN QUERY
|
|
EXECUTE
|
|
'SELECT tablename::text, timespan::text
|
|
FROM observatory.obs_table t
|
|
JOIN observatory.obs_column_table ct
|
|
ON ct.table_id = t.id
|
|
JOIN observatory.obs_column c
|
|
ON ct.column_id = c.id
|
|
WHERE c.type ILIKE ''geometry''
|
|
AND c.id = $1'
|
|
USING search_term;
|
|
RETURN;
|
|
ELSE
|
|
RETURN QUERY
|
|
EXECUTE
|
|
'SELECT tablename::text, timespan::text
|
|
FROM observatory.obs_table t
|
|
JOIN observatory.obs_column_table ct
|
|
ON ct.table_id = t.id
|
|
JOIN observatory.obs_column c
|
|
ON ct.column_id = c.id
|
|
WHERE c.type ILIKE ''geometry''
|
|
AND c.id = $1
|
|
AND t.timespan = $2'
|
|
USING search_term, time_span;
|
|
RETURN;
|
|
END IF;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql IMMUTABLE;
|
|
|
|
-- Functions used to search the observatory for measures
|
|
--------------------------------------------------------------------------------
|
|
-- TODO allow the user to specify the boundary to search for measures
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_Search(
|
|
search_term text,
|
|
relevant_boundary text DEFAULT null
|
|
)
|
|
RETURNS TABLE(id text, description text, name text, aggregate text, source text) as $$
|
|
DECLARE
|
|
boundary_term text;
|
|
BEGIN
|
|
IF relevant_boundary then
|
|
boundary_term = '';
|
|
else
|
|
boundary_term = '';
|
|
END IF;
|
|
|
|
RETURN QUERY
|
|
EXECUTE format($string$
|
|
SELECT id::text, description::text,
|
|
name::text,
|
|
aggregate::text,
|
|
NULL::TEXT source -- TODO use tags
|
|
FROM observatory.OBS_column
|
|
where name ilike '%%' || %L || '%%'
|
|
or description ilike '%%' || %L || '%%'
|
|
%s
|
|
$string$, search_term, search_term,boundary_term);
|
|
RETURN;
|
|
END
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
-- Functions to return the geometry levels that a point is part of
|
|
--------------------------------------------------------------------------------
|
|
-- TODO add test response
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetAvailableBoundaries(
|
|
geom geometry(Geometry, 4326),
|
|
timespan text DEFAULT null)
|
|
RETURNS TABLE(boundary_id text, description text, time_span text, tablename text) as $$
|
|
DECLARE
|
|
timespan_query TEXT DEFAULT '';
|
|
BEGIN
|
|
|
|
IF timespan != NULL
|
|
THEN
|
|
timespan_query = format('AND timespan = %L', timespan);
|
|
END IF;
|
|
|
|
RETURN QUERY
|
|
EXECUTE
|
|
$string$
|
|
SELECT
|
|
column_id::text As column_id,
|
|
obs_column.description::text As description,
|
|
timespan::text As timespan,
|
|
tablename::text As tablename
|
|
FROM
|
|
observatory.OBS_table,
|
|
observatory.OBS_column_table,
|
|
observatory.OBS_column
|
|
WHERE
|
|
observatory.OBS_column_table.column_id = observatory.obs_column.id AND
|
|
observatory.OBS_column_table.table_id = observatory.obs_table.id
|
|
AND
|
|
observatory.OBS_column.type = 'Geometry'
|
|
AND
|
|
ST_Intersects($1, st_setsrid(observatory.obs_table.the_geom, 4326))
|
|
$string$ || timespan_query
|
|
USING geom;
|
|
RETURN;
|
|
END
|
|
$$ LANGUAGE plpgsql;
|
|
-- Data Observatory -- Welcome to the Future
|
|
-- These Data Observatory functions provide access to boundary polyons (and
|
|
-- their ids) such as those available through the US Census Tiger, Who's on
|
|
-- First, the Spanish Census, and so on
|
|
|
|
|
|
-- OBS_GetBoundary
|
|
--
|
|
-- Returns the boundary polygon(s) that overlap with the input point geometry.
|
|
-- From an input point geometry, find the boundary which intersects with the
|
|
-- centroid of the input geometry
|
|
-- Inputs:
|
|
-- geom geometry: input point geometry
|
|
-- boundary_id text: source id of boundaries
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- boundary geometry: geometry boundary that intersects with geom, is at the
|
|
-- resolution requested with boundary_id, and time_span
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetBoundary(
|
|
geom geometry(Point, 4326),
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL)
|
|
RETURNS geometry(Geometry, 4326)
|
|
AS $$
|
|
DECLARE
|
|
boundary geometry(Geometry, 4326);
|
|
target_table text;
|
|
BEGIN
|
|
|
|
-- TODO: Check if SRID = 4326, if not transform?
|
|
|
|
-- if not a point, raise error
|
|
IF ST_GeometryType(geom) != 'ST_Point'
|
|
THEN
|
|
RAISE EXCEPTION 'Invalid geometry type (%), expecting ''ST_Point''', ST_GeometryType(geom);
|
|
END IF;
|
|
|
|
-- choose appropriate table based on time_span
|
|
IF time_span IS NULL
|
|
THEN
|
|
SELECT x.target_tables INTO target_table
|
|
FROM cdb_observatory._OBS_SearchTables(boundary_id,
|
|
time_span) As x(target_tables,
|
|
timespans)
|
|
ORDER BY x.timespans DESC
|
|
LIMIT 1;
|
|
ELSE
|
|
-- TODO: modify for only one table returned instead of arbitrarily choosing
|
|
-- one with LIMIT 1 (could be conflict between clipped vs non-clipped
|
|
-- boundaries in the metadata tables)
|
|
SELECT x.target_tables INTO target_table
|
|
FROM cdb_observatory._OBS_SearchTables(boundary_id,
|
|
time_span) As x(target_tables,
|
|
timespans)
|
|
WHERE x.timespans = time_span
|
|
LIMIT 1;
|
|
END IF;
|
|
|
|
-- if no tables are found, raise notice and return null
|
|
IF target_table IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No boundaries found for ''%'' in ''%''', ST_AsText(geom), boundary_id;
|
|
RETURN NULL::geometry;
|
|
END IF;
|
|
|
|
RAISE NOTICE 'target_table: %', target_table;
|
|
|
|
-- return the first boundary in intersections
|
|
EXECUTE format(
|
|
'SELECT the_geom
|
|
FROM observatory.%I
|
|
WHERE ST_Intersects($1, the_geom)
|
|
LIMIT 1', target_table)
|
|
INTO boundary
|
|
USING geom;
|
|
|
|
RETURN boundary;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- OBS_GetBoundaryId
|
|
--
|
|
-- retrieves the boundary identifier (e.g., '36047' = Kings County/Brooklyn, NY)
|
|
-- corresponding to the location geom and boundary types (e.g.,
|
|
-- us.census.tiger.county)
|
|
|
|
-- Inputs:
|
|
-- geom geometry: location where the boundary is requested to overlap with
|
|
-- boundary_id text: source id of boundaries (e.g., us.census.tiger.county)
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- geometry_id text: identifier of the geometry which overlaps with the input
|
|
-- point geom in the table corresponding to boundary_id and
|
|
-- time_span
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetBoundaryId(
|
|
geom geometry(Point, 4326),
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL
|
|
)
|
|
RETURNS text
|
|
AS $$
|
|
DECLARE
|
|
output_id text;
|
|
target_table text;
|
|
geoid_colname text;
|
|
BEGIN
|
|
|
|
-- If not point, raise error
|
|
IF ST_GeometryType(geom) != 'ST_Point'
|
|
THEN
|
|
RAISE EXCEPTION 'Invalid geometry type (%), expecting ''ST_Point''', ST_GeometryType(geom);
|
|
END IF;
|
|
|
|
-- choose appropriate table based on time_span
|
|
IF time_span IS NULL
|
|
THEN
|
|
SELECT x.target_tables INTO target_table
|
|
FROM cdb_observatory._OBS_SearchTables(boundary_id,
|
|
time_span) As x(target_tables,
|
|
timespans)
|
|
ORDER BY x.timespans DESC
|
|
LIMIT 1;
|
|
ELSE
|
|
SELECT x.target_tables INTO target_table
|
|
FROM cdb_observatory._OBS_SearchTables(boundary_id,
|
|
time_span) As x(target_tables,
|
|
timespans)
|
|
WHERE x.timespans = time_span
|
|
LIMIT 1;
|
|
END IF;
|
|
|
|
-- if no tables are found, raise notice and return null
|
|
IF target_table IS NULL
|
|
THEN
|
|
RAISE NOTICE 'Warning: No boundaries found for ''%''', boundary_id;
|
|
RETURN NULL::text;
|
|
END IF;
|
|
|
|
EXECUTE
|
|
format('SELECT ct.colname
|
|
FROM observatory.obs_column_to_column c2c,
|
|
observatory.obs_column_table ct,
|
|
observatory.obs_table t
|
|
WHERE c2c.reltype = ''geom_ref''
|
|
AND ct.column_id = c2c.source_id
|
|
AND ct.table_id = t.id
|
|
AND t.tablename = %L'
|
|
, target_table)
|
|
INTO geoid_colname;
|
|
|
|
RAISE NOTICE 'target_table: %, geoid_colname: %', target_table, geoid_colname;
|
|
|
|
-- return geometry id column value
|
|
EXECUTE format(
|
|
'SELECT %I::text
|
|
FROM observatory.%I
|
|
WHERE ST_Intersects($1, the_geom)
|
|
LIMIT 1', geoid_colname, target_table)
|
|
INTO output_id
|
|
USING geom;
|
|
|
|
RETURN output_id;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
-- OBS_GetBoundaryById
|
|
--
|
|
-- Given a geometry reference (e.g., geoid for US Census), and it's geometry
|
|
-- level (see OBS_ListGeomColumns() for all available boundary ids), give back
|
|
-- the boundary that corresponds to that geometry_id, boundary_id, and
|
|
-- time_span
|
|
|
|
-- Inputs:
|
|
-- geometry_id text: geometry id of the requested boundary
|
|
-- boundary_id text: source id of boundaries (e.g., us.census.tiger.county)
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- boundary geometry: geometry boundary that matches geometry_id, is at the
|
|
-- resolution requested with boundary_id, and time_span
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetBoundaryById(
|
|
geometry_id text, -- ex: '36047'
|
|
boundary_id text, -- ex: 'us.census.tiger.county'
|
|
time_span text DEFAULT NULL -- ex: '2009'
|
|
)
|
|
RETURNS geometry(geometry, 4326)
|
|
AS $$
|
|
DECLARE
|
|
boundary geometry(geometry, 4326);
|
|
target_table text;
|
|
geoid_colname text;
|
|
geom_colname text;
|
|
BEGIN
|
|
|
|
SELECT * INTO geoid_colname, target_table, geom_colname
|
|
FROM cdb_observatory._OBS_GetGeometryMetadata(boundary_id);
|
|
|
|
RAISE NOTICE '%', target_table;
|
|
|
|
IF target_table IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No geometries found';
|
|
RETURN NULL::geometry;
|
|
END IF;
|
|
|
|
-- retrieve boundary
|
|
EXECUTE
|
|
format(
|
|
'SELECT %I
|
|
FROM observatory.%I
|
|
WHERE %I = $1
|
|
LIMIT 1', geom_colname, target_table, geoid_colname)
|
|
INTO boundary
|
|
USING geometry_id;
|
|
|
|
RETURN boundary;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- _OBS_GetBoundariesByGeometry
|
|
-- internal function for retrieving geometries based on an input geometry
|
|
-- see OBS_GetBoundariesByGeometry or OBS_GetBoundariesByPointAndRadius for
|
|
-- more information
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetBoundariesByGeometry(
|
|
geom geometry(Geometry, 4326),
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL,
|
|
overlap_type text DEFAULT 'intersects')
|
|
RETURNS TABLE(the_geom geometry, geom_refs text)
|
|
AS $$
|
|
DECLARE
|
|
boundary geometry(Geometry, 4326);
|
|
geom_colname text;
|
|
geoid_colname text;
|
|
target_table text;
|
|
BEGIN
|
|
|
|
-- check inputs
|
|
IF lower(overlap_type) NOT IN ('contains', 'intersects', 'within')
|
|
THEN
|
|
-- recognized overlap type (map to ST_Contains, ST_Intersects, and ST_Within)
|
|
RAISE EXCEPTION 'Overlap type ''%'' is not an accepted type (choose intersects, within, or contains)', overlap_type;
|
|
ELSIF ST_GeometryType(geom) NOT IN ('ST_Polygon', 'ST_MultiPolygon')
|
|
THEN
|
|
RAISE EXCEPTION 'Invalid geometry type (%), expecting ''ST_MultiPolygon'' or ''ST_Polygon''', ST_GeometryType(geom);
|
|
END IF;
|
|
|
|
-- TODO: add timespan in search
|
|
-- TODO: add overlap info in search
|
|
SELECT * INTO geoid_colname, target_table, geom_colname
|
|
FROM cdb_observatory._OBS_GetGeometryMetadata(boundary_id);
|
|
|
|
-- if no tables are found, raise notice and return null
|
|
IF target_table IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No boundaries found for bounding box ''%'' in ''%''', ST_AsText(geom), boundary_id;
|
|
RETURN QUERY SELECT NULL::geometry, NULL::text;
|
|
RETURN;
|
|
END IF;
|
|
|
|
RAISE NOTICE 'target_table: %', target_table;
|
|
|
|
-- return first boundary in intersections
|
|
RETURN QUERY
|
|
EXECUTE format(
|
|
'SELECT %I, %I::text
|
|
FROM observatory.%I
|
|
WHERE ST_%s($1, the_geom)
|
|
', geom_colname, geoid_colname, target_table, overlap_type)
|
|
USING geom;
|
|
RETURN;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- OBS_GetBoundariesByGeometry
|
|
--
|
|
-- Given a bounding box (or a polygon), and it's geometry level (see
|
|
-- OBS_ListGeomColumns() for all available boundary ids), give back the
|
|
-- boundaries that are contained within the bounding box polygon and the
|
|
-- associated geometry ids
|
|
|
|
-- Inputs:
|
|
-- geom geometry: bounding box (or polygon) of the region of interest
|
|
-- boundary_id text: source id of boundaries (e.g., us.census.tiger.county)
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- table with the following columns
|
|
-- boundary geometry: geometry boundary that is contained within the input
|
|
-- bounding box at the requested geometry level
|
|
-- with boundary_id, and time_span
|
|
-- geom_refs text: geometry identifiers (e.g., geoid for the US Census)
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetBoundariesByGeometry(
|
|
geom geometry(Geometry, 4326),
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL,
|
|
overlap_type text DEFAULT 'intersects')
|
|
RETURNS TABLE(the_geom geometry, geom_refs text)
|
|
AS $$
|
|
BEGIN
|
|
|
|
RETURN QUERY SELECT *
|
|
FROM cdb_observatory._OBS_GetBoundariesByGeometry(
|
|
geom,
|
|
boundary_id,
|
|
time_span,
|
|
overlap_type
|
|
);
|
|
RETURN;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- OBS_GetBoundariesByPointAndRadius
|
|
--
|
|
-- Given a point and radius, and it's geometry level (see
|
|
-- OBS_ListGeomColumns() for all available boundary ids), give back the
|
|
-- boundaries that are contained within the point buffered by radius meters and
|
|
-- the associated geometry ids
|
|
|
|
-- Inputs:
|
|
-- geom geometry: point geometry centered on area of interest
|
|
-- radius numeric: radius (in meters) of a circle centered on geom for
|
|
-- selecting polygons
|
|
-- boundary_id text: source id of boundaries (e.g., us.census.tiger.county)
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- table with the following columns
|
|
-- boundary geometry: geometry boundary that is contained within the input
|
|
-- bounding box at the requested geometry level
|
|
-- with boundary_id, and time_span
|
|
-- geom_refs text: geometry identifiers (e.g., geoid for the US Census)
|
|
--
|
|
-- TODO: move to ST_DWithin instead of buffer + intersects?
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetBoundariesByPointAndRadius(
|
|
geom geometry(Point, 4326), -- point
|
|
radius numeric, -- radius in meters
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL,
|
|
overlap_type text DEFAULT 'intersects')
|
|
RETURNS TABLE(the_geom geometry, geom_refs text)
|
|
AS $$
|
|
DECLARE
|
|
circle_boundary geometry(Geometry, 4326);
|
|
BEGIN
|
|
|
|
IF ST_GeometryType(geom) != 'ST_Point'
|
|
THEN
|
|
RAISE EXCEPTION 'Input geometry ''%'' is not a point', ST_AsText(geom);
|
|
ELSE
|
|
circle_boundary := ST_Buffer(geom::geography, radius)::geometry;
|
|
END IF;
|
|
|
|
RETURN QUERY SELECT *
|
|
FROM cdb_observatory._OBS_GetBoundariesByGeometry(
|
|
circle_boundary,
|
|
boundary_id,
|
|
time_span);
|
|
RETURN;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- _OBS_GetPointsByGeometry
|
|
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetPointsByGeometry(
|
|
geom geometry(Geometry, 4326),
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL,
|
|
overlap_type text DEFAULT 'intersects')
|
|
RETURNS TABLE(the_geom geometry, geom_refs text)
|
|
AS $$
|
|
DECLARE
|
|
boundary geometry(Geometry, 4326);
|
|
geom_colname text;
|
|
geoid_colname text;
|
|
target_table text;
|
|
BEGIN
|
|
|
|
IF lower(overlap_type) NOT IN ('contains', 'within', 'intersects')
|
|
THEN
|
|
RAISE EXCEPTION 'Overlap type ''%'' is not an accepted type (choose intersects, within, or contains)', overlap_type;
|
|
ELSIF ST_GeometryType(geom) NOT IN ('ST_Polygon', 'ST_MultiPolygon')
|
|
THEN
|
|
RAISE EXCEPTION 'Invalid geometry type (%), expecting ''ST_MultiPolygon'' or ''ST_Polygon''', ST_GeometryType(geom);
|
|
END IF;
|
|
|
|
SELECT * INTO geoid_colname, target_table, geom_colname
|
|
FROM cdb_observatory._OBS_GetGeometryMetadata(boundary_id);
|
|
|
|
-- if no tables are found, raise notice and return null
|
|
IF target_table IS NULL
|
|
THEN
|
|
RAISE NOTICE 'No boundaries found for bounding box ''%'' in ''%''', ST_AsText(geom), boundary_id;
|
|
RETURN QUERY SELECT NULL::geometry, NULL::text;
|
|
RETURN;
|
|
END IF;
|
|
|
|
RAISE NOTICE 'target_table: %', target_table;
|
|
|
|
-- return first boundary in intersections
|
|
RETURN QUERY
|
|
EXECUTE format(
|
|
'SELECT ST_PointOnSurface(%I) As %s, %I::text
|
|
FROM observatory.%I
|
|
WHERE ST_%s($1, the_geom)
|
|
', geom_colname, geom_colname, geoid_colname, target_table, overlap_type)
|
|
USING geom;
|
|
RETURN;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- OBS_GetPointsByGeometry
|
|
--
|
|
-- Given a polygon, and it's geometry level (see
|
|
-- OBS_ListGeomColumns() for all available boundary ids), give back a point
|
|
-- which lies in a boundary from the requested geometry level that is contained
|
|
-- within the bounding box polygon and the associated geometry ids
|
|
--
|
|
-- Inputs:
|
|
-- geom geometry: bounding box (or polygon) of the region of interest
|
|
-- boundary_id text: source id of boundaries (e.g., us.census.tiger.county)
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- table with the following columns
|
|
-- boundary geometry: point that lies on a boundary that is contained within
|
|
-- the input bounding box at the requested geometry
|
|
-- level with boundary_id, and time_span
|
|
-- geom_refs text: geometry identifiers (e.g., geoid for the US Census)
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetPointsByGeometry(
|
|
geom geometry(Geometry, 4326),
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL,
|
|
overlap_type text DEFAULT 'intersects')
|
|
RETURNS TABLE(the_geom geometry, geom_refs text)
|
|
AS $$
|
|
BEGIN
|
|
|
|
RETURN QUERY SELECT *
|
|
FROM cdb_observatory._OBS_GetPointsByGeometry(
|
|
geom,
|
|
boundary_id,
|
|
time_span,
|
|
overlap_type);
|
|
RETURN;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
-- OBS_GetBoundariesByPointAndRadius
|
|
--
|
|
-- Given a point and radius, and it's geometry level (see
|
|
-- OBS_ListGeomColumns() for all available boundary ids), give back the
|
|
-- boundaries that are contained within the point buffered by radius meters and
|
|
-- the associated geometry ids
|
|
|
|
-- Inputs:
|
|
-- geom geometry: point geometry centered on area of interest
|
|
-- radius numeric: radius (in meters) of a circle centered on geom for
|
|
-- selecting polygons
|
|
-- boundary_id text: source id of boundaries (e.g., us.census.tiger.county)
|
|
-- see function OBS_ListGeomColumns for all avaiable
|
|
-- boundary ids
|
|
-- time_span text: time span that the geometries were collected (optional)
|
|
--
|
|
-- Output:
|
|
-- table with the following columns
|
|
-- boundary geometry: geometry boundary that is contained within the input
|
|
-- bounding box at the requested geometry level
|
|
-- with boundary_id, and time_span
|
|
-- geom_refs text: geometry identifiers (e.g., geoid for the US Census)
|
|
--
|
|
|
|
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetPointsByPointAndRadius(
|
|
geom geometry(Point, 4326), -- point
|
|
radius numeric, -- radius in meters
|
|
boundary_id text,
|
|
time_span text DEFAULT NULL,
|
|
overlap_type text DEFAULT 'intersects')
|
|
RETURNS TABLE(the_geom geometry, geom_refs text)
|
|
AS $$
|
|
DECLARE
|
|
circle_boundary geometry(Geometry, 4326);
|
|
BEGIN
|
|
|
|
IF ST_GeometryType(geom) != 'ST_Point'
|
|
THEN
|
|
RAISE EXCEPTION 'Input geometry ''%'' is not a point', ST_AsText(geom);
|
|
ELSE
|
|
circle_boundary := ST_Buffer(geom::geography, radius)::geometry;
|
|
END IF;
|
|
|
|
RETURN QUERY SELECT *
|
|
FROM cdb_observatory._OBS_GetPointsByGeometry(
|
|
ST_Buffer(geom::geography, radius)::geometry,
|
|
boundary_id,
|
|
time_span,
|
|
overlap_type);
|
|
RETURN;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
|
|
-- _OBS_GetGeometryMetadata()
|
|
-- TODO: add timespan in search
|
|
-- TODO: add choice of clipped versus not clipped
|
|
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetGeometryMetadata(boundary_id text)
|
|
RETURNS table(geoid_colname text, target_table text, geom_colname text)
|
|
AS $$
|
|
BEGIN
|
|
|
|
RETURN QUERY
|
|
EXECUTE
|
|
format($string$
|
|
SELECT geoid_ct.colname::text As geoid_colname,
|
|
tablename::text,
|
|
geom_ct.colname::text As geom_colname
|
|
FROM observatory.obs_column_table As geoid_ct,
|
|
observatory.obs_table As geom_t,
|
|
observatory.obs_column_table As geom_ct,
|
|
observatory.obs_column As geom_c
|
|
WHERE geoid_ct.column_id
|
|
IN (
|
|
SELECT source_id
|
|
FROM observatory.obs_column_to_column
|
|
WHERE reltype = 'geom_ref'
|
|
AND target_id = '%s'
|
|
)
|
|
AND geoid_ct.table_id = geom_t.id AND
|
|
geom_t.id = geom_ct.table_id AND
|
|
geom_ct.column_id = geom_c.id AND
|
|
geom_c.type ILIKE 'geometry' AND
|
|
geom_c.id = '%s'
|
|
$string$, boundary_id, boundary_id);
|
|
RETURN;
|
|
-- AND geom_t.timespan = '%s' <-- put in requested year
|
|
-- TODO: filter by clipped vs. not so appropriate tablename are unique
|
|
-- so the limit 1 can be removed
|
|
RETURN;
|
|
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
-- Placeholder for permission tweaks at creation time.
|
|
-- Make sure by default there are no permissions for publicuser
|
|
-- NOTE: this happens at extension creation time, as part of an implicit transaction.
|
|
-- REVOKE ALL PRIVILEGES ON SCHEMA cdb_observatory FROM PUBLIC, publicuser CASCADE;
|
|
|
|
-- Grant permissions on the schema to publicuser (but just the schema)
|
|
-- GRANT USAGE ON SCHEMA cdb_crankshaft TO publicuser;
|
|
|
|
-- Revoke execute permissions on all functions in the schema by default
|
|
-- REVOKE EXECUTE ON ALL FUNCTIONS IN SCHEMA cdb_observatory FROM PUBLIC, publicuser;
|