Lightweight persist to database

Hello everybody,

today I want to describe following use case. Quite often it is needed to persist to database one or another DAC class, which is filled by some data. 

As usually I see people do this via hard coding of DAC class inside of the Graph. But today I want to share with you a way of persisting DAC class without hardcoding it as a view. 

In order to accomplish this, you can use following graph:

public class ImportEntitiesInsertion : PXGraph<ImportEntitiesInsertion>
{
    public string AddView(Type dacType)
    {
        var viewName = "_DYNAMIC_" + dacType.GetLongName();
        if (!this.Views.ContainsKey(viewName))
        {
            var command = BqlCommand.CreateInstance(typeof(Select<>), dacType);
            var newView = new PXView(thistrue, command);
            Views.Add(viewName, newView);
            Views.Caches.Add(dacType);
        }
        return viewName;
    }
}

 

After that, in some other place of the code, you can use this graph like this:

 

var graphForInsertion = PXGraph.CreateInstance<ImportEntitiesInsertion>();
var dacType = typeof(SOOrder); 
var viewName = graphForInsertion.AddView(dacType);
 
for (int i = 0; i < 10; i++)
{
    var newOrd = new SOOrder();
    graphForInsertion.Views[viewName].Cache.Insert(newOrd);
}
graphForInsertion.Persist();

 

 What I especially like about this approach, is that records will be persisted initially in the cache, and only after you'll call Persist, all bunch of records will be persisted to database.

 

 

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