Changeset d97bcab for src/sql/sqlengine.cpp

Timestamp:

04/15/10 14:49:59 (12 years ago)

Author:

kirilma <kirilma@…>

Branches:

master, qt5

Children:

04acaf9

Parents:

f5b68a4

Message:

implement deleting a conference

pass event about it to mainwindow to update select control
fix Conference::activeConference() to work when first conference is removed

File:

• src/sql/sqlengine.cpp (modified) (2 diffs)

src/sql/sqlengine.cpp

@@ -321 +321 @@
 }
 
+void SqlEngine::deleteConference(int id)
+{
+    QSqlDatabase db = QSqlDatabase::database();
+
+    if ( !db.isValid() || !db.isOpen()) {
+        return;
+    }
+
+    beginTransaction();
+
+    QHash<QString, QVariant> params;
+    params["xid_conference"] = id;
+    execQueryWithParameter(db, "DELETE FROM LINK WHERE xid_conference = :xid_conference", params);
+    execQueryWithParameter(db, "DELETE FROM EVENT_ROOM WHERE xid_conference = :xid_conference", params);
+    execQueryWithParameter(db, "DELETE FROM EVENT_PERSON WHERE xid_conference = :xid_conference", params);
+    execQueryWithParameter(db, "DELETE FROM EVENT WHERE xid_conference = :xid_conference", params);
+    execQueryWithParameter(db, "DELETE FROM CONFERENCE WHERE id = :xid_conference", params);
+    execQuery(db, "DELETE FROM ROOM WHERE NOT EXISTS(SELECT * FROM EVENT_ROOM WHERE xid_room = ROOM.id)");
+    execQuery(db, "DELETE FROM PERSON WHERE NOT EXISTS(SELECT * FROM EVENT_PERSON WHERE xid_person = PERSON.id)");
+
+    commitTransaction();
+}
+
 bool SqlEngine::execQuery(QSqlDatabase &aDatabase, const QString &aQuery)
 {
@@ -336 +359 @@
 }
 
+bool SqlEngine::execQueryWithParameter(QSqlDatabase &aDatabase, const QString &aQuery, const QHash<QString, QVariant>& params)
+{
+    qDebug() << "SQL:" << aQuery << "params:" << params;
+
+    QSqlQuery sqlQuery(aDatabase);
+    sqlQuery.prepare(aQuery);
+    foreach (QString param_key, params.keys()) {
+        sqlQuery.bindValue(param_key, params[param_key]);
+    }
+    if( !sqlQuery.exec() ){
+       qDebug() << "SQL ERR: " << sqlQuery.lastError().number() << ", " << sqlQuery.lastError().text();
+       return false;
+    }
+    else{
+       //qDebug() << "SQL OK.\n";
+       return true;
+    }
+}
+