Changeset 78e3575 for src/mvc/event.cpp

Timestamp:

02/03/10 14:19:18 (12 years ago)

Author:

timkoma <timkoma@…>

Branches:

master, qt5

Children:

a1755df

Parents:

e296dc6

Message:

performance improvement for load persons

File:

• src/mvc/event.cpp (modified) (1 diff)

src/mvc/event.cpp

@@ -144 +144 @@
 }
 
-QStringList Event::persons() const
-{
-    QSqlQuery query;
-    // TODO: conference ID isn't used here
-    query.prepare("SELECT person.name FROM person INNER JOIN event_person ON person.id = event_person.xid_person AND event_person.xid_event = :id");
-    query.bindValue(":id", id());
-    query.exec();
-    // TODO: handle qeury error
-    //qDebug() << query.lastError();
-
-    QStringList persons;
-    while(query.next())
-        persons.append(query.record().value("name").toString());
-
-    return persons;
+QStringList Event::persons()
+{
+    if( personsList.isEmpty() )
+    {
+        QSqlQuery query;
+        // TODO: conference ID isn't used here
+        query.prepare("SELECT person.name FROM person INNER JOIN event_person ON person.id = event_person.xid_person AND event_person.xid_event = :id");
+        query.bindValue(":id", id());
+        query.exec();
+        // TODO: handle qeury error
+        //qDebug() << query.lastError();
+
+        while(query.next())
+            personsList.append(query.record().value("name").toString());
+    }
+
+    return personsList;
 }