EvaluationFactory
¶

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class
EvaluationFactory
[source]¶ Bases:
taurus.core.util.singleton.Singleton
,taurus.core.taurusfactory.TaurusFactory
,taurus.core.util.log.Logger
A Singleton class that provides Evaluation related objects.
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DEFAULT_AUTHORITY
= '//localhost'¶
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DEFAULT_DATABASE
= '_DefaultEvalDB'¶
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DEFAULT_DEVICE
= '@DefaultEvaluator'¶
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addAttributeToPolling
(attribute, period, unsubscribe_evts=False)[source]¶ Activates the polling (client side) for the given attribute with the given period (seconds).
Parameters: - attribute (
TangoAttribute
) – attribute name. - period (
float
) – polling period (in seconds) - unsubscribe_evts (
bool
) – whether or not to unsubscribe from events
- attribute (
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elementTypesMap
= {18: <class 'taurus.core.evaluation.evalauthority.EvaluationAuthority'>, 3: <class 'taurus.core.evaluation.evaldevice.EvaluationDevice'>, 13: <class 'taurus.core.evaluation.evalattribute.EvaluationAttribute'>}¶
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getAttribute
(attr_name, **kwargs)[source]¶ Obtain the object corresponding to the given attribute name. If the corresponding attribute already exists, the existing instance is returned. Otherwise a new instance is stored and returned. The evaluator device associated to this attribute will also be created if necessary.
Parameters: attr_name ( str
) – the attribute name string. Seetaurus.core.evaluation
for valid attribute namesAny aditional keyword arguments will be passed directly to the constructor of :class:EvaluationAttribute
Return type: EvaluationAttribute
Returns: @throws TaurusException if the given name is invalid.
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getAuthority
(name=None)[source]¶ Obtain the EvaluationDatabase object.
Parameters: db_name ( str
) – this is ignored because only one database is supportedReturn type: EvaluationDatabase
Returns:
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getDevice
(dev_name)[source]¶ Obtain the object corresponding to the given device name. If the corresponding device already exists, the existing instance is returned. Otherwise a new instance is stored and returned.
Parameters: dev_name ( str
) – the device name string. Seetaurus.core.evaluation
for valid device namesReturn type: EvaluationDevice
Returns: @throws TaurusException if the given name is invalid.
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removeAttributeFromPolling
(attribute)[source]¶ Deactivate the polling (client side) for the given attribute. If the polling of the attribute was not previously enabled, nothing happens.
Parameters: attribute ( str
) – attribute name.
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schemes
= ('eval', 'evaluation')¶
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