32 lines
2.4 KiB
Plaintext
32 lines
2.4 KiB
Plaintext
/*! \mainpage Getting Started
|
|
*
|
|
* Everything begins with a data base represented by the class LMDBAL::Base.
|
|
* It repesents a collection of key-value storages that are going to be stored in a sigle data base directory.
|
|
* To create a LMDBAL::Base you need to pick up a name of a directory that is going to be created on your machine.
|
|
*
|
|
* LMDBAL::Base creates or opens existing directory with the given name in the location acquired with
|
|
* <a class="el" href="https://doc.qt.io/qt-6/qstandardpaths.html">QStandardPaths</a>::<a class="el" href="https://doc.qt.io/qt-6/qstandardpaths.html#writableLocation">writableLocation</a>(<a class="el" href="https://doc.qt.io/qt-6/qstandardpaths.html">QStandardPaths</a>::<a class="el" href="https://doc.qt.io/qt-6/qstandardpaths.html#StandardLocation-enum">CacheLocation</a>)
|
|
* so, the file system destination of your data depends on the
|
|
* <a class="el" href="https://doc.qt.io/qt-6/qcoreapplication.html">QCoreApplication</a> configuration of your app.
|
|
*
|
|
* After you have created a LMDBAL::Base you probably want to obtain storage handlers.
|
|
* Now there are only two available types of them: LMDBAL::Storage and LMDBAL::Cache.
|
|
* The only difference between them is that LMDBAL::Cache additionally stores elements in a
|
|
* <a class="el" href="https://en.cppreference.com/w/cpp/container/map">std::map</a>
|
|
* to speed up the access.
|
|
*
|
|
* You can obtain handlers by calling LMDBAL::Base::addStorage() or LMDBAL::Base::addCache().
|
|
* Note that the handlers still belong to the LMDBAL::Base and it's his responsibility to destroy them.
|
|
* You are not obliged to save those handlers,
|
|
* you can obtain them at any time later using methods LMDBAL::Base::getStorage() or LMDBAL::Base::getCache()
|
|
* calling them with the same template types and names.
|
|
*
|
|
* After you have added all the storages you wanted it's time to open the data base with LMDBAL::Base::open().
|
|
* At this point you are not allowed to add any more storages, otherwise LMDBAL::Opened exception will be thrown.
|
|
* It's currently the limitation of this little library and I might solve it in the future.
|
|
* Database will throw no exception if you will try to close the closed LMDBAL::Base or open again already opened one.
|
|
* Also it will automatically close itself if you'll try to destoroy onpened LMDBAL::Base.
|
|
*
|
|
* To discover how to store read and modify data take a look at LMDBAL::Storage and LMDBAL::Cache classes.
|
|
*/
|