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change railway_line_high to a function source
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@hiddewie
hiddewie committed Jan 1, 2025
1 parent 2dca101 commit e75ef56
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321 changes: 255 additions & 66 deletions import/sql/tile_views.sql
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Original file line number Diff line number Diff line change
@@ -1,108 +1,297 @@
--- Shared ---

CREATE OR REPLACE VIEW railway_line_high AS
CREATE OR REPLACE FUNCTION railway_line_high(z integer, x integer, y integer)
RETURNS bytea
LANGUAGE SQL
IMMUTABLE
STRICT
PARALLEL SAFE
RETURN (
SELECT
ST_AsMVT(tile, 'railway_line_high', 4096, 'way')
FROM (
SELECT
id,
osm_id,
way,
way_length,
feature,
state,
usage,
service,
highspeed,
(tunnel IS NOT NULL AND tunnel != 'no') as tunnel,
(bridge IS NOT NULL AND bridge != 'no') as bridge,
CASE
WHEN ref IS NOT NULL AND label_name IS NOT NULL THEN ref || ' ' || label_name
ELSE COALESCE(ref, label_name)
END AS standard_label,
ref,
track_ref,
track_class,
array_to_string(reporting_marks, ', ') as reporting_marks,
preferred_direction,
rank,
maxspeed,
speed_label,
train_protection_rank,
train_protection,
electrification_state,
voltage,
frequency,
electrification_label,
future_voltage,
future_frequency,
railway_to_int(gauge0) AS gaugeint0,
gauge0,
railway_to_int(gauge1) AS gaugeint1,
gauge1,
railway_to_int(gauge2) AS gaugeint2,
gauge2,
gauge_label,
loading_gauge,
array_to_string(operator, ', ') as operator,
traffic_mode,
radio
FROM (
SELECT
id,
osm_id,
way,
ST_AsMVTGeom(
way,
ST_TileEnvelope(z, x, y),
4096, 64, true
) as way,
way_length,
feature,
state,
usage,
service,
rank,
highspeed,
(tunnel IS NOT NULL AND tunnel != 'no') as tunnel,
(bridge IS NOT NULL AND bridge != 'no') as bridge,
CASE
WHEN ref IS NOT NULL AND label_name IS NOT NULL THEN ref || ' ' || label_name
ELSE COALESCE(ref, label_name)
END AS standard_label,
ref,
reporting_marks,
layer,
bridge,
tunnel,
track_ref,
track_class,
array_to_string(reporting_marks, ', ') as reporting_marks,
ref,
railway_label_name(name, tunnel, tunnel_name, bridge, bridge_name) AS label_name,
preferred_direction,
rank,
maxspeed,
speed_label,
train_protection_rank,
train_protection,
electrification_state,
voltage,
frequency,
electrification_label,
railway_electrification_label(COALESCE(voltage, future_voltage), COALESCE(frequency, future_frequency)) AS electrification_label,
future_voltage,
future_frequency,
railway_to_int(gauge0) AS gaugeint0,
gauge0,
railway_to_int(gauge1) AS gaugeint1,
gauge1,
railway_to_int(gauge2) AS gaugeint2,
gauge2,
gauge_label,
gauges[1] AS gauge0,
gauges[2] AS gauge1,
gauges[3] AS gauge2,
(select string_agg(gauge, ' | ') from unnest(gauges) as gauge where gauge ~ '^[0-9]+$') as gauge_label,
loading_gauge,
array_to_string(operator, ', ') as operator,
operator,
traffic_mode,
radio
FROM
(SELECT
id,
osm_id,
way,
way_length,
feature,
state,
usage,
service,
rank,
highspeed,
reporting_marks,
layer,
bridge,
tunnel,
track_ref,
track_class,
ref,
railway_label_name(name, tunnel, tunnel_name, bridge, bridge_name) AS label_name,
preferred_direction,
maxspeed,
speed_label,
train_protection_rank,
train_protection,
electrification_state,
voltage,
frequency,
railway_electrification_label(COALESCE(voltage, future_voltage), COALESCE(frequency, future_frequency)) AS electrification_label,
future_voltage,
future_frequency,
gauges[1] AS gauge0,
gauges[2] AS gauge1,
gauges[3] AS gauge2,
(select string_agg(gauge, ' | ') from unnest(gauges) as gauge where gauge ~ '^[0-9]+$') as gauge_label,
loading_gauge,
operator,
traffic_mode,
radio
FROM railway_line
WHERE feature IN ('rail', 'tram', 'light_rail', 'subway', 'narrow_gauge')
FROM railway_line
WHERE
way && ST_TileEnvelope(z, x, y)
AND feature IN ('rail', 'tram', 'light_rail', 'subway', 'narrow_gauge')
-- conditionally include features based on zoom level
-- TODO include state
AND CASE
WHEN z < 7 THEN
feature = 'rail' AND usage = 'main' AND service IS NULL
WHEN z < 8 THEN
feature = 'rail' AND usage IN ('main', 'branch') AND service IS NULL
WHEN z < 9 THEN
feature = 'rail' AND usage IN ('main', 'branch') AND service IS NULL
WHEN z < 10 THEN
feature = 'rail' AND usage IN ('main', 'branch', 'industrial') AND service IS NULL
WHEN z < 11 THEN
(feature = 'rail' AND usage IN ('main', 'branch') AND service IS NULL)
OR (feature = 'rail' AND usage = 'industrial')
OR (feature = 'rail' AND usage IS NULL AND service IN ('siding', 'crossover', 'spur'))
OR (feature = 'narrow_gauge' AND service IN (NULL, 'siding', 'crossover', 'spur'))
OR (feature = 'rail' AND state = 'construction' AND usage IN ('main', 'branch') AND service IS NULL)
WHEN z < 12 THEN
(feature = 'rail' AND usage IN ('main', 'branch') AND service IS NULL)
OR (feature = 'rail' AND usage = 'industrial')
OR (feature = 'rail' AND usage IS NULL AND service IN ('siding', 'crossover', 'spur', 'yard'))
OR (feature = 'narrow_gauge' AND service IN (NULL, 'siding', 'crossover', 'spur', 'yard'))
OR (feature IN ('rail', 'subway', 'light_rail') AND state = 'construction' AND usage IN ('main', 'branch') AND service IS NULL)
OR (feature IN ('subway', 'light_rail') AND service IS NULL)
ELSE
true
END
) AS r
ORDER by
layer,
rank NULLS LAST,
maxspeed NULLS FIRST;
layer,
rank NULLS LAST,
maxspeed NULLS FIRST
) as tile
WHERE way IS NOT NULL
);

-- Function metadata
-- TODO calculate labels in frontend
DO $do$ BEGIN
EXECUTE 'COMMENT ON FUNCTION railway_line_high IS $tj$' || $$
{
"vector_layers": [
{
"id": "railway_line_high",
"fields": {
"id": "integer",
"osm_id": "integer",
"way_length": "number",
"feature": "string",
"state": "string",
"usage": "string",
"service": "string",
"highspeed": "boolean",
"preferred_direction": "string",
"tunnel": "boolean",
"bridge": "boolean",
"ref": "string",
"standard_label": "string",
"track_ref": "string",
"maxspeed": "number",
"speed_label": "string",
"train_protection": "string",
"train_protection_rank": "integer",
"electrification_state": "string",
"frequency": "number",
"voltage": "integer",
"future_frequency": "number",
"future_voltage": "integer",
"electrification_label": "string",
"gauge0": "string",
"gaugeint0": "number",
"gauge1": "string",
"gaugeint1": "number",
"gauge2": "string",
"gaugeint2": "number",
"gauge_label": "string",
"loading_gauge": "string",
"track_class": "string",
"reporting_marks": "string",
"operator": "string",
"traffic_mode": "string",
"radio": "string"
}
}
]
}
$$::json || '$tj$';
END $do$;

CREATE OR REPLACE VIEW railway_line_high_old AS
SELECT
id,
osm_id,
way,
way_length,
feature,
state,
usage,
service,
highspeed,
(tunnel IS NOT NULL AND tunnel != 'no') as tunnel,
(bridge IS NOT NULL AND bridge != 'no') as bridge,
CASE
WHEN ref IS NOT NULL AND label_name IS NOT NULL THEN ref || ' ' || label_name
ELSE COALESCE(ref, label_name)
END AS standard_label,
ref,
track_ref,
track_class,
array_to_string(reporting_marks, ', ') as reporting_marks,
preferred_direction,
rank,
maxspeed,
speed_label,
train_protection_rank,
train_protection,
electrification_state,
voltage,
frequency,
electrification_label,
future_voltage,
future_frequency,
railway_to_int(gauge0) AS gaugeint0,
gauge0,
railway_to_int(gauge1) AS gaugeint1,
gauge1,
railway_to_int(gauge2) AS gaugeint2,
gauge2,
gauge_label,
loading_gauge,
array_to_string(operator, ', ') as operator,
traffic_mode,
radio
FROM
(SELECT
id,
osm_id,
way,
way_length,
feature,
state,
usage,
service,
rank,
highspeed,
reporting_marks,
layer,
bridge,
tunnel,
track_ref,
track_class,
ref,
railway_label_name(name, tunnel, tunnel_name, bridge, bridge_name) AS label_name,
preferred_direction,
maxspeed,
speed_label,
train_protection_rank,
train_protection,
electrification_state,
voltage,
frequency,
railway_electrification_label(COALESCE(voltage, future_voltage), COALESCE(frequency, future_frequency)) AS electrification_label,
future_voltage,
future_frequency,
gauges[1] AS gauge0,
gauges[2] AS gauge1,
gauges[3] AS gauge2,
(select string_agg(gauge, ' | ') from unnest(gauges) as gauge where gauge ~ '^[0-9]+$') as gauge_label,
loading_gauge,
operator,
traffic_mode,
radio
FROM railway_line
WHERE feature IN ('rail', 'tram', 'light_rail', 'subway', 'narrow_gauge')
) AS r
ORDER by
layer,
rank NULLS LAST,
maxspeed NULLS FIRST;

CREATE OR REPLACE VIEW railway_line_med AS
SELECT
*
FROM
railway_line_high
railway_line_high_old
WHERE feature = 'rail' AND usage IN ('main', 'branch') AND service IS NULL;

CREATE OR REPLACE VIEW railway_line_low AS
SELECT
*
FROM
railway_line_high
railway_line_high_old
WHERE feature = 'rail' AND usage = 'main' AND service IS NULL;

--- Standard ---
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