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Accepting request 930294 from home:AZhou:branches:GNOME:Factory

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- Add tracker-fix-actual-0-path-matches.patch: Fix no metadata
  available when using tracker3 info caused by a wrong sparql
  implementation. (bsc#1191207, glgo#GNOME/tracker#337)

OBS-URL: https://build.opensuse.org/request/show/930294
OBS-URL: https://build.opensuse.org/package/show/GNOME:Factory/tracker?expand=0&rev=226
This commit is contained in:
Bjørn Lie 2021-11-09 09:32:14 +00:00 committed by Git OBS Bridge
parent 1365a9fb98
commit 6c567f7f71
3 changed files with 128 additions and 0 deletions
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119
tracker-fix-actual-0-path-matches.patch Normal file
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@ -0,0 +1,119 @@
From ad0f8ab4a83cb8ecd2bb55619d06cc6544e45f7d Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Sun, 7 Nov 2021 13:54:01 +0100
Subject: [PATCH] libtracker-sparql: Fix actual 0-path matches in ? and * path
operators
These operators ("zero or one" and "zero or more" respectively) so far have
worked on the prerequisite that the contained property path has at least
one match with the given constraints. E.g.:
SELECT ?u { <URI> nie:interpretedAs? ?u }
Would return no results if the given uri had no nie:interpretedAs, but here
we still want to have the 0-length match, regardless of there being a match
or not.
This commit fixes this by making these common table expressions look for
"self" in the rdfs:Resource table, this is ensured to always match as long
as the resource exists.
Fixes: https://gitlab.gnome.org/GNOME/tracker/-/issues/337
---
src/libtracker-data/tracker-sparql.c | 43 ++++++++++++++++++++++++----
1 file changed, 37 insertions(+), 6 deletions(-)
diff --git a/src/libtracker-data/tracker-sparql.c b/src/libtracker-data/tracker-sparql.c
index d12786e45..f6d42228a 100644
--- a/src/libtracker-data/tracker-sparql.c
+++ b/src/libtracker-data/tracker-sparql.c
@@ -895,10 +895,42 @@ _prepend_path_element (TrackerSparql *sparql,
{
TrackerStringBuilder *old;
gchar *table_name, *graph_column;
+ gchar *zero_length_match = NULL;
if (path_elem->op == TRACKER_PATH_OPERATOR_NONE &&
tracker_token_is_empty (&sparql->current_state->graph)) {
tracker_sparql_add_union_graph_subquery (sparql, path_elem->data.property);
+ } else if (path_elem->op == TRACKER_PATH_OPERATOR_ZEROORONE ||
+ path_elem->op == TRACKER_PATH_OPERATOR_ZEROORMORE) {
+ const gchar *graph;
+
+ graph = tracker_token_get_idstring (&sparql->current_state->graph);
+
+ if (tracker_token_is_empty (&sparql->current_state->graph) ||
+ tracker_token_get_variable (&sparql->current_state->graph)) {
+ TrackerOntologies *ontologies;
+ TrackerClass *rdfs_resource;
+
+ ontologies = tracker_data_manager_get_ontologies (sparql->data_manager);
+ rdfs_resource = tracker_ontologies_get_class_by_uri (ontologies, RDFS_NS "Resource");
+ tracker_sparql_add_union_graph_subquery_for_class (sparql,
+ rdfs_resource);
+
+ zero_length_match = g_strdup_printf ("SELECT ID, ID, graph, %d, %d "
+ "FROM \"unionGraph_rdfs:Resource\"",
+ TRACKER_PROPERTY_TYPE_RESOURCE,
+ TRACKER_PROPERTY_TYPE_RESOURCE);
+ } else if (tracker_sparql_find_graph (sparql, graph)) {
+ zero_length_match = g_strdup_printf ("SELECT ID, ID, %d, %d, %d "
+ "FROM \"%s\".\"rdfs:Resource\"",
+ tracker_sparql_find_graph (sparql, graph),
+ TRACKER_PROPERTY_TYPE_RESOURCE,
+ TRACKER_PROPERTY_TYPE_RESOURCE,
+ graph);
+ } else {
+ /* Graph does not exist, ensure to come back empty */
+ zero_length_match = g_strdup ("SELECT * FROM (SELECT 0 AS ID, NULL, NULL, 0, 0 LIMIT 0)");
+ }
}
old = tracker_sparql_swap_builder (sparql, sparql->current_state->with_clauses);
@@ -991,14 +1023,13 @@ _prepend_path_element (TrackerSparql *sparql,
"(SELECT ID, value, graph, ID_type, value_type "
"FROM \"%s_helper\" "
"UNION "
- "SELECT ID, ID, graph, ID_type, ID_type "
- "FROM \"%s\" "
+ "%s "
"UNION "
"SELECT value, value, graph, value_type, value_type "
"FROM \"%s\") ",
path_elem->name,
path_elem->name,
- path_elem->data.composite.child1->name,
+ zero_length_match,
path_elem->data.composite.child1->name);
break;
case TRACKER_PATH_OPERATOR_ONEORMORE:
@@ -1018,8 +1049,7 @@ _prepend_path_element (TrackerSparql *sparql,
case TRACKER_PATH_OPERATOR_ZEROORONE:
_append_string_printf (sparql,
"\"%s\" (ID, value, graph, ID_type, value_type) AS "
- "(SELECT ID, ID, graph, ID_type, ID_type "
- "FROM \"%s\" "
+ "(%s "
"UNION "
"SELECT ID, value, graph, ID_type, value_type "
"FROM \"%s\" "
@@ -1027,7 +1057,7 @@ _prepend_path_element (TrackerSparql *sparql,
"SELECT value, value, graph, value_type, value_type "
"FROM \"%s\") ",
path_elem->name,
- path_elem->data.composite.child1->name,
+ zero_length_match,
path_elem->data.composite.child1->name,
path_elem->data.composite.child1->name);
break;
@@ -1075,6 +1105,7 @@ _prepend_path_element (TrackerSparql *sparql,
}
tracker_sparql_swap_builder (sparql, old);
+ g_free (zero_length_match);
}
static inline gchar *
--
GitLab

7
tracker.changes
View File

@ -1,3 +1,10 @@
-------------------------------------------------------------------
Tue Nov 9 08:25:17 UTC 2021 - Alynx Zhou <alynx.zhou@suse.com>
- Add tracker-fix-actual-0-path-matches.patch: Fix no metadata
available when using tracker3 info caused by a wrong sparql
implementation. (bsc#1191207, glgo#GNOME/tracker#337)
-------------------------------------------------------------------
Thu Nov 4 10:48:18 UTC 2021 - Bjørn Lie <bjorn.lie@gmail.com>

2
tracker.spec
View File

@ -28,6 +28,8 @@ License: GPL-2.0-or-later
Group: Productivity/Other
URL: https://wiki.gnome.org/Projects/Tracker
Source0: https://download.gnome.org/sources/tracker/3.2/%{name}-%{version}.tar.xz
# PATCH-FIX-UPSTREAM tracker-fix-actual-0-path-matches.patch bsc#1191207, glgo#GNOME/tracker#337 alynx.zhou@suse.com -- Fix no metadata available when using tracker3 info
Patch1: tracker-fix-actual-0-path-matches.patch
BuildRequires: asciidoc
BuildRequires: fdupes