Optimized some queries (tested with 10M+ nodes)

src/main/java/it/inaf/oats/vospace/persistence/NodeDAO.java

@@ -106,7 +106,7 @@ public class NodeDAO {
                 + "c.type, c.async_trans, c.sticky, c.job_id IS NOT NULL AS busy_state, c.creator_id, c.group_read, c.group_write,\n"
                 + "c.is_public, c.content_length, c.created_on, c.last_modified, c.accept_views, c.provide_views, c.quota, c.content_md5, c.target\n"
                 + "FROM node n\n"
-                + "JOIN node c ON c.path ~ (n.path::varchar || ? || '*{1}')::lquery OR c.path = n.path\n"
+                + "JOIN node c ON c.parent_path = n.path OR c.path = n.path\n"
                 + "WHERE n.node_id = id_from_vos_path(?)\n"
                 + "ORDER BY vos_path";
 
@@ -116,7 +116,6 @@ public class NodeDAO {
             ps.setString(++i, path);
             ps.setString(++i, path);
             ps.setString(++i, "/".equals(path) ? "" : "/");
-            ps.setString(++i, "/".equals(path) ? "" : ".");
             ps.setString(++i, path);
             return ps;
         }, (row, index) -> {
@@ -317,8 +316,8 @@ public class NodeDAO {
     }
 
     public void renameNode(Long nodeId, String name) {
-        String sql = "UPDATE node SET name = ?\n, os_name = COALESCE(os_name, name)"
-                + "WHERE path ~ ('*.' || ?)::lquery";
+        String sql = "UPDATE node SET name = ?, os_name = COALESCE(os_name, name) "
+                + "WHERE node_id = ?";
 
         jdbcTemplate.update(conn -> {
             PreparedStatement ps = conn.prepareStatement(sql);
@@ -413,8 +412,10 @@ public class NodeDAO {
     }
 
     public void setBranchJobId(Long rootNodeId, String jobId) {
-        String sql = "UPDATE node SET job_id = ?\n"
-                + "WHERE path ~ ('*.' || ? || '.*')::lquery";
+        String sql = "UPDATE node c SET job_id = ? "
+                + "FROM node r "
+                + "WHERE r.node_id = ? "
+                + "AND r.path @> c.path";
 
         jdbcTemplate.update(conn -> {
             PreparedStatement ps = conn.prepareStatement(sql);