add share / public properties

doc/database/pod-upgrade-0.3.0_to_0.4.0.sql

@@ -0,0 +1,14 @@
+ALTER TABLE pod_nodes_history ADD COLUMN is_shared boolean NOT NULL DEFAULT False;
+ALTER TABLE pod_nodes_history ADD COLUMN is_public boolean NOT NULL DEFAULT False;
+ALTER TABLE pod_nodes_history ADD COLUMN public_url_key character varying(1024);
+
+-- create view
+CREATE OR REPLACE VIEW pod_nodes AS
+    SELECT DISTINCT ON (node_id) node_id, parent_id, node_order, node_type, created_at, updated_at, 
+        data_label, data_content, data_datetime, node_status, data_reminder_datetime, 
+        data_file_name, data_file_content, data_file_mime_type, parent_tree_path, 
+        node_depth, owner_id, is_shared, is_public, public_url_key
+    FROM pod_nodes_history
+    ORDER BY node_id, updated_at DESC;
+
+