Method DeleteNode

Src/Database/DatabaseTree.cpp:291–334

}

bool CDatabaseNode::DeleteNode(
    int id, std::function<bool (int)> cbDeleteLeaf, bool checkReturn)
{
    bool bRet = false;
    // 删除子目录
    auto folders = GetSubNodes(id);
    foreach(auto f, folders) {
        bRet = DeleteNode(f.GetId(), cbDeleteLeaf, checkReturn);
        if(checkReturn && !bRet)
            return false;
    }

    // 删除其下面的所有条目
    if(cbDeleteLeaf) {
        bRet = cbDeleteLeaf(id);
        if(checkReturn && !bRet) {
            SetError("Failed to call cbDeleteLeaf");
            qCritical(log) << GetError();
            return false;
        }
    }

    bRet = OnDeleteLeafs(id);
    if(checkReturn && !bRet) {
        SetError("Failed to call OnDeleteLeafs");
        qCritical(log) << GetError();
        return false;
    }

    // 删除文件夹
    QSqlQuery query(GetDatabase());
    query.prepare("DELETE FROM `" + m_szTableName + "` WHERE `id` = :id");
    query.bindValue(":id", id);
    bRet = query.exec();
    if (bRet)
        emit sigChanged();
    else {
        SetError("Failed to delete folders: " + query.lastError().text()
                 + "; Sql: " + query.executedQuery());
        qCritical(log) << GetError();
    }

    return bRet;
}

bool CDatabaseNode::OnDeleteLeafs(int id)
{