feat(pg): Add support for Postgres materialized views (relkind = 'm') and test

martin/src/config/file/postgres/builder.rs

@@ -499,7 +499,8 @@ fn warn_on_rename(old_id: &String, new_id: &String, typ: &str) {
 
 fn summary(info: &TableInfo) -> String {
     let relkind = match info.is_view {
-        Some(true) => "view",
+        Some('v') => "view",
+        Some('m') => "materialized view",
         _ => "table",
     };
     // TODO: add column_id to the summary if it is set

martin/src/config/file/postgres/config_table.rs

@@ -32,9 +32,9 @@ pub struct TableInfo {
     #[serde(skip)]
     pub geometry_index: Option<bool>,
 
-    /// Flag indicating if table is actually a view (`PostgreSQL relkind = 'v'`)
+    /// Flag indicating if table is actually a view (`PostgreSQL relkind = 'v'`) or a Materialized View (`relkind = 'm'`)
     #[serde(skip)]
-    pub is_view: Option<bool>,
+    pub is_view: Option<char>,
 
     /// Feature id column name
     pub id_column: Option<String>,

martin/src/config/file/postgres/resolver/scripts/query_available_tables.sql

@@ -113,7 +113,7 @@ descriptions AS (
     FROM pg_class AS cls
     INNER JOIN pg_namespace ON cls.relnamespace = pg_namespace.oid
     LEFT JOIN pg_description ON cls.oid = pg_description.objoid AND pg_description.objsubid = 0
-    WHERE cls.relkind = 'r' OR cls.relkind = 'v'
+    WHERE cls.relkind IN ('r', 'v', 'm')
 )
 
 SELECT

tests/fixtures/tables/materialized_view.sql

@@ -0,0 +1,18 @@
+CREATE TABLE fixtures_comments (
+    id serial PRIMARY KEY,
+    txt text,
+    geom GEOMETRY (POINT, 4326)
+);
+
+INSERT INTO fixtures_comments (txt, geom) VALUES
+('a', ST_GEOMFROMTEXT('POINT(-122.4194 37.7749)', 4326)),
+('b', ST_GEOMFROMTEXT('POINT(-73.935242 40.730610)', 4326));
+
+CREATE MATERIALIZED VIEW fixtures_mv_comments AS
+SELECT
+    id,
+    txt,
+    geom
+FROM fixtures_comments;
+
+COMMENT ON MATERIALIZED VIEW fixtures_mv_comments IS 'fixture: materialized view comments';

tests/test.sh

@@ -420,6 +420,10 @@ test_pbf antimeridian_4_0_5 antimeridian/4/0/5
 test_jsn tbl_comment              MixPoints
 test_jsn fnc_comment              function_Mixed_Name
 
+>&2 echo "***** Test server response for materialized view *****"
+test_jsn mv_comment               fixtures_mv_comments
+test_pbf mv_comment_0_0_0         fixtures_mv_comments/0/0/0
+
 >&2 echo "***** Test server response for the same name in different schemas *****"
 test_jsn same_name_different_schema_table1       table_name_existing_two_schemas
 test_pbf same_name_different_schema_table1_0_0_0 table_name_existing_two_schemas/0/0/0