[gnome-photos] query-builder: Add photos_query_builder_collection_icon_query

[Debarshi Ray <debarshir src gnome org>]

commit 86389f5c8661ee18a3254e415dc2cf0a093e1bed
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Apr 2 21:19:43 2013 +0200

    query-builder: Add photos_query_builder_collection_icon_query

 src/photos-query-builder.c |   14 ++++++++++++++
 src/photos-query-builder.h |    2 ++
 2 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/src/photos-query-builder.c b/src/photos-query-builder.c
index 68053a4..df55232 100644
--- a/src/photos-query-builder.c
+++ b/src/photos-query-builder.c
@@ -201,6 +201,20 @@ photos_query_builder_create_collection_query (const gchar *name)
 
 
 PhotosQuery *
+photos_query_builder_collection_icon_query (const gchar *resource)
+{
+  gchar *sparql;
+
+  sparql = g_strdup_printf ("SELECT ?urn "
+                            "tracker:coalesce(nfo:fileLastModified(?urn), nie:contentLastModified(?urn)) AS 
?mtime "
+                            "WHERE { ?urn nie:isPartOf <%s> } "
+                            "ORDER BY DESC (?mtime) LIMIT 4",
+                            resource);
+  return photos_query_new (sparql);
+}
+
+
+PhotosQuery *
 photos_query_builder_count_favorites_query (void)
 {
   gchar *filter;
diff --git a/src/photos-query-builder.h b/src/photos-query-builder.h
index 3d729ef..889effd 100644
--- a/src/photos-query-builder.h
+++ b/src/photos-query-builder.h
@@ -33,6 +33,8 @@ G_BEGIN_DECLS
 
 PhotosQuery  *photos_query_builder_create_collection_query (const gchar *name);
 
+PhotosQuery  *photos_query_builder_collection_icon_query (const gchar *resource);
+
 PhotosQuery  *photos_query_builder_count_favorites_query (void);
 
 PhotosQuery  *photos_query_builder_count_query         (void);