refactor: 💡 remove table sources filter support

BREAKING CHANGE: remove table sources `filter` query param support

Author: stepankuzmin

Cargo.lock

@@ -10,7 +10,6 @@ docopt = "1"
 env_logger = "0.6"
 futures = "0.1"
 log = "0.4"
-mapbox_expressions_to_sql = "0.1.0"
 num_cpus = "1.0"
 postgres = { version = "0.15", features = ["with-time", "with-uuid", "with-serde_json"] }
 r2d2 = "0.8"

Cargo.toml

@@ -3,7 +3,6 @@ extern crate actix_web;
 extern crate docopt;
 extern crate env_logger;
 extern crate futures;
-extern crate mapbox_expressions_to_sql;
 extern crate tilejson;
 #[macro_use]
 extern crate log;

src/main.rs

@@ -3,5 +3,5 @@ SELECT ST_AsMVT(tile, '{id}', {extent}, 'geom' {id_column}) FROM (
   SELECT
     ST_AsMVTGeom({geometry_column_mercator}, bounds.mercator, {extent}, {buffer}, {clip_geom}) AS geom {properties}
   FROM {id}, bounds
-  WHERE {geometry_column} && bounds.original {condition}
+  WHERE {geometry_column} && bounds.original
 ) AS tile WHERE geom IS NOT NULL

src/scripts/get_tile.sql

@@ -1,4 +1,3 @@
-use mapbox_expressions_to_sql;
 use std::collections::HashMap;
 use std::error::Error;
 use std::io;
@@ -34,7 +33,7 @@ impl Source for TableSource {
     &self,
     conn: &PostgresConnection,
     xyz: &XYZ,
-    query: &Query,
+    _query: &Query,
   ) -> Result<Tile, io::Error> {
     let mercator_bounds = utils::tilebbox(xyz);
 
@@ -65,10 +64,6 @@ impl Source for TableSource {
       .clone()
       .map_or("".to_string(), |id_column| format!(", '{}'", id_column));
 
-    let condition = query
-      .get("filter")
-      .and_then(|filter| mapbox_expressions_to_sql::parse(filter).ok());
-
     let query = format!(
       include_str!("scripts/get_tile.sql"),
       id = self.id,
@@ -80,8 +75,7 @@ impl Source for TableSource {
       extent = self.extent.unwrap_or(DEFAULT_EXTENT),
       buffer = self.buffer.unwrap_or(DEFAULT_BUFFER),
       clip_geom = self.clip_geom.unwrap_or(DEFAULT_CLIP_GEOM),
-      properties = properties,
-      condition = condition.map_or("".to_string(), |condition| format!("AND {}", condition)),
+      properties = properties
     );
 
     let tile: Tile = conn