Initial commit of tilelive-mbtiles

lib/schema.sql

@@ -0,0 +1,72 @@
+-- MBTiles schema
+
+CREATE TABLE IF NOT EXISTS map (
+   zoom_level INTEGER,
+   tile_column INTEGER,
+   tile_row INTEGER,
+   tile_id TEXT,
+   grid_id TEXT
+);
+
+CREATE TABLE IF NOT EXISTS grid_key (
+    grid_id TEXT,
+    key_name TEXT
+);
+
+CREATE TABLE IF NOT EXISTS keymap (
+    key_name TEXT,
+    key_json TEXT
+);
+
+CREATE TABLE IF NOT EXISTS grid_utfgrid (
+    grid_id TEXT,
+    grid_utfgrid BLOB
+);
+
+CREATE TABLE IF NOT EXISTS images (
+    tile_data blob,
+    tile_id text
+);
+
+CREATE TABLE IF NOT EXISTS metadata (
+    name text,
+    value text
+);
+
+
+CREATE UNIQUE INDEX IF NOT EXISTS map_index ON map (zoom_level, tile_column, tile_row);
+CREATE UNIQUE INDEX IF NOT EXISTS grid_key_lookup ON grid_key (grid_id, key_name);
+CREATE UNIQUE INDEX IF NOT EXISTS keymap_lookup ON keymap (key_name);
+CREATE UNIQUE INDEX IF NOT EXISTS grid_utfgrid_lookup ON grid_utfgrid (grid_id);
+CREATE UNIQUE INDEX IF NOT EXISTS images_id ON images (tile_id);
+CREATE UNIQUE INDEX IF NOT EXISTS name ON metadata (name);
+
+
+CREATE VIEW IF NOT EXISTS tiles AS
+    SELECT
+        map.zoom_level AS zoom_level,
+        map.tile_column AS tile_column,
+        map.tile_row AS tile_row,
+        images.tile_data AS tile_data
+    FROM map
+    JOIN images ON images.tile_id = map.tile_id;
+
+CREATE VIEW IF NOT EXISTS grids AS
+    SELECT
+        map.zoom_level AS zoom_level,
+        map.tile_column AS tile_column,
+        map.tile_row AS tile_row,
+        grid_utfgrid.grid_utfgrid AS grid
+    FROM map
+    JOIN grid_utfgrid ON grid_utfgrid.grid_id = map.grid_id;
+
+CREATE VIEW IF NOT EXISTS grid_data AS
+    SELECT
+        map.zoom_level AS zoom_level,
+        map.tile_column AS tile_column,
+        map.tile_row AS tile_row,
+        keymap.key_name AS key_name,
+        keymap.key_json AS key_json
+    FROM map
+    JOIN grid_key ON map.grid_id = grid_key.grid_id
+    JOIN keymap ON grid_key.key_name = keymap.key_name;