[gnome-games/wip/exalm/cache2: 7/8] database: Switch DatabaseDeveloper to DatabaseMetadata

[Alexander Mikhaylenko <alexm src gnome org>]

commit 0118c2c6b1147349d80c95c2d9d01df1c2e42ab8
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Mon Sep 3 22:37:23 2018 +0500

    database: Switch DatabaseDeveloper to DatabaseMetadata
    
    Use DatabaseMetadata to fetch developer, and use DatabaseDeveloper as an
    adapter object.

 src/database/database-developer.vala | 71 +++---------------------------------
 src/database/database-game.vala      |  4 +-
 src/database/database.vala           |  4 --
 3 files changed, 8 insertions(+), 71 deletions(-)
---
diff --git a/src/database/database-developer.vala b/src/database/database-developer.vala
index ef17dd87..67feca42 100644
--- a/src/database/database-developer.vala
+++ b/src/database/database-developer.vala
@@ -1,75 +1,14 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 private class Games.DatabaseDeveloper : Object, Developer {
-       private const string LOAD_DEVELOPER_QUERY = """
-               SELECT developer FROM game_metadata WHERE uid=$UID;
-       """;
+       private DatabaseMetadata metadata;
 
-       private const string SAVE_DEVELOPER_QUERY = """
-               UPDATE game_metadata SET developer=$DEVELOPER WHERE uid=$UID;
-       """;
-
-       private Developer developer;
-       private Uid uid;
-       private Sqlite.Statement load_statement;
-       private Sqlite.Statement save_statement;
-       private string loaded;
-
-       public DatabaseDeveloper (Sqlite.Database database, Developer developer, Uid uid) {
-               this.developer = developer;
-               this.uid = uid;
-
-               developer.changed.connect (() => changed ());
-
-               try {
-                       load_statement = Database.prepare (database, LOAD_DEVELOPER_QUERY);
-                       save_statement = Database.prepare (database, SAVE_DEVELOPER_QUERY);
-               }
-               catch (Error e) {
-                       warning (e.message);
-               }
+       public DatabaseDeveloper (DatabaseMetadata metadata) {
+               this.metadata = metadata;
+               metadata.developer_changed.connect (() => changed ());
        }
 
        public string get_developer () {
-               try {
-                       if (loaded == null)
-                               load_developer ();
-                       if (loaded != "")
-                               return loaded;
-                       else
-                               save_developer ();
-               }
-               catch (Error e) {
-                       warning (e.message);
-               }
-
-               return developer.get_developer ();
-       }
-
-       private void load_developer () throws Error {
-               if (load_statement == null)
-                       return;
-
-               Database.bind_text (load_statement, "$UID", uid.get_uid ());
-
-               if (load_statement.step () == Sqlite.ROW)
-                       loaded = load_statement.column_text (0) ?? "";
-               else
-                       warning ("Execution failed.");
-       }
-
-       private void save_developer () throws Error {
-               if (save_statement == null)
-                       return;
-
-               loaded = developer.get_developer ();
-               if (loaded == "")
-                       return;
-
-               Database.bind_text (save_statement, "$UID", uid.get_uid ());
-               Database.bind_text (save_statement, "$DEVELOPER", loaded);
-
-               if (save_statement.step () != Sqlite.DONE)
-                       warning ("Execution failed.");
+               return metadata.get_developer ();
        }
 }
diff --git a/src/database/database-game.vala b/src/database/database-game.vala
index 7b82d7ec..20c7ce51 100644
--- a/src/database/database-game.vala
+++ b/src/database/database-game.vala
@@ -8,6 +8,7 @@ private class Games.DatabaseGame : Object, Game {
        private Database database;
        private Game game;
        private Uid uid;
+       private Developer developer;
 
        public DatabaseGame (Database database, Game game) {
                this.database = database;
@@ -16,6 +17,7 @@ private class Games.DatabaseGame : Object, Game {
                var metadata = database.get_metadata (game);
 
                uid = new DatabaseUid (metadata);
+               developer = new DatabaseDeveloper (metadata);
        }
 
        public Uid get_uid () {
@@ -47,7 +49,7 @@ private class Games.DatabaseGame : Object, Game {
        }
 
        public Developer get_developer () {
-               return database.get_developer (game.get_developer (), get_uid ());
+               return developer;
        }
 
        public Publisher get_publisher () {
diff --git a/src/database/database.vala b/src/database/database.vala
index e5ddc5ec..352b0caa 100644
--- a/src/database/database.vala
+++ b/src/database/database.vala
@@ -63,10 +63,6 @@ private class Games.Database : Object {
                return new DatabaseUriSource (database);
        }
 
-       public DatabaseDeveloper get_developer (Developer developer, Uid uid) {
-               return new DatabaseDeveloper (database, developer, uid);
-       }
-
        public DatabaseMetadata get_metadata (Game game) {
                return new DatabaseMetadata (database, game);
        }