Life cycle of model

1.The Method of Obtaining Model

Get a model and use the model path to get it through the World object.

//Get an example of the model where World is singlet
Thing thing = World.getInstance().getThing("HelloWorld");

2.Automatic reloading of models

If the model is saved in the file system, that is, managed by FileThingManager, it will be entered into the file modification monitoring after loading. When the date of the file is found to be modified by the external program, the latest model will be automatically loaded the next time it is acquired through World.

3.Model caching and garbage collection

When loaded, the model is stored in a Map<String, SoftReference<Thing>> cache. When memory is tight, the JVM automatically reclaims the model in the cache.

So don't store persistent variables in the model, because the model may be garbage collected at any time.

4.Save and remove models

When the model is modified, it can be saved by calling its save () or saveAs method, and the model can be removed by using the remove () method.

//Save
thing.save();

//Save to other things managers and new paths
thing.saveAs("_local", "xworker.test.TestHelloWorld");

//Remove model
thing.remove();

//You can reset the encoding format before save
thing.getMetadata().setCoderType(XmlThingCoder.TYPE);