[rygel] media-export: Be able to use in-memory database

[Jens Georg <jensgeorg src gnome org>]

commit 53e27b7217125b682ccfccd56cfaaa6e4a7fbe4b
Author: Jens Georg <mail jensge org>
Date:   Wed Aug 25 20:09:04 2010 +0300

    media-export: Be able to use in-memory database
    
    Useful for unittests

 .../media-export/rygel-media-export-database.vala  |   15 +++++++++++----
 .../rygel-media-export-media-cache.vala            |    9 ++++++++-
 2 files changed, 19 insertions(+), 5 deletions(-)
---
diff --git a/src/plugins/media-export/rygel-media-export-database.vala 
b/src/plugins/media-export/rygel-media-export-database.vala
index 16c007d..1b2f3d3 100644
--- a/src/plugins/media-export/rygel-media-export-database.vala
+++ b/src/plugins/media-export/rygel-media-export-database.vala
@@ -87,10 +87,17 @@ internal class Rygel.MediaExport.Database : SqliteWrapper {
      * (<cache-dir>/rygel/<name>.db)
      */
     public Database (string name) throws DatabaseError {
-        var dirname = Path.build_filename (Environment.get_user_cache_dir (),
-                                           "rygel");
-        DirUtils.create_with_parents (dirname, 0750);
-        var db_file = Path.build_filename (dirname, "%s.db".printf (name));
+        string db_file;
+
+        if (name != ":memory:") {
+            var dirname = Path.build_filename (
+                                        Environment.get_user_cache_dir (),
+                                        "rygel");
+            DirUtils.create_with_parents (dirname, 0750);
+            db_file = Path.build_filename (dirname, "%s.db".printf (name));
+        } else {
+            db_file = name;
+        }
 
         base (db_file);
 
diff --git a/src/plugins/media-export/rygel-media-export-media-cache.vala 
b/src/plugins/media-export/rygel-media-export-media-cache.vala
index 084e9c0..e904cca 100644
--- a/src/plugins/media-export/rygel-media-export-media-cache.vala
+++ b/src/plugins/media-export/rygel-media-export-media-cache.vala
@@ -59,8 +59,15 @@ public class Rygel.MediaExport.MediaCache : Object {
 
     // Constructors
     private MediaCache () throws Error {
+        var db_name = "media-export";
+        try {
+            var config = MetaConfig.get_default ();
+            if (config.get_bool ("MediaExport", "use-temp-db")) {
+                db_name = ":memory:";
+            }
+        } catch (Error error) { }
         this.sql = new SQLFactory ();
-        this.open_db ("media-export");
+        this.open_db (db_name);
         this.factory = new ObjectFactory ();
         this.get_exists_cache ();
     }