Current Situation
The object cache of the LocalFileObjectStore is not initialised when a new instance of the class is created. This means that the files it is intended to contain are not loaded initially.
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def __init__(self, directory_path: str): |
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""" |
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Initializer of class LocalFileObjectStore |
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:param directory_path: Path to the local file backend (the path where you want to store your AAS JSON files) |
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""" |
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self.directory_path: str = directory_path.rstrip("/") |
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# A dictionary of weak references to local replications of stored objects. Objects are kept in this cache as |
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# long as there is any other reference in the Python application to them. We use this to make sure that only one |
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# local replication of each object is kept in the application and retrieving an object from the store always |
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# returns the **same** (not only equal) object. Still, objects are forgotten, when they are not referenced |
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# anywhere else to save memory. |
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self._object_cache: weakref.WeakValueDictionary[model.Identifier, model.Identifiable] \ |
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= weakref.WeakValueDictionary() |
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self._object_cache_lock = threading.Lock() |
Consequently, calling CRUD operations such as discard() on newly initialised instances raises a KeyError.
Proposed Change
Add an initialisation routine to the constructor that adds all local files of the LocalFileObjectStore to its cache from initialisation onwards.
