API ¶
Data Layer Components ¶
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A message for adding values to a property.
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A DataBackend is responsible for storing and querying PDGD data.
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A DataLayerInterface provides access to PDG data
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A DataLayerServer allows external connections to a data layer interface
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Visualizers are used to subscribe to data layer interface’s objects
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A Message communicates how a pdg object’s data has changes.
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A data layer object property.
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A representation of the current state of a data layer’s object.
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Holds string values used as property names
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A SubscriptionHandler is responsible for a specific data layer object path.
managers ¶
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pdgd.DataLayerInterfaceManager
The DataLayerInterfaceManager manages instances of data layer interfaces.
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pdgd.DataLayerVisualizerManager
The DataLayerVisualizerManager manages instances of data layer visualizers.
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Access to the default data layer interface.
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pdgd.SubscriptionHandlerManager
The SubscriptionHandlerManager manages instances of subscription handlers.
Queries ¶
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Object representing the results of a backend query operation
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Object representing a query
types ¶
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The type of object when registering a custom class with PDGD