Add a script to generate the SQL to refresh the materialized views

data/README.md

@@ -79,3 +79,6 @@ osmosis --rrii
 ```
 
 For production purposes, you probably want to put the script into Chef or similar, and change some paths.
+
+### Refreshing views
+To generate the SQL necessary to update the views, run `node refresh.js`.

data/refresh.js

@@ -0,0 +1,22 @@
+// Converts yaml to sql
+
+var yaml = require('js-yaml');
+var fs   = require('fs');
+
+function tname(table_name) {
+return table_name;
+}
+
+
+// Write SQL to STDOUT
+var doc = yaml.safeLoad(fs.readFileSync('generalizations.yml', 'utf8'));
+console.log("SET client_min_messages TO WARNING;");
+console.log("SET statement_timeout = 0;\n")
+doc.forEach(function(view) {
+    // Regular views require no refreshing
+    if (view.materialized) {
+        console.log("REFRESH MATERIALIZED VIEW CONCURRENTLY " + tname(view.name) + ";");
+    }
+});
+console.log("\nRESET client_min_messages;");
+