Memorized Dynamic Attribute
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Hello TANGO Experts, Consider a scenario, in which there is a need to create and remove attributes, which are memorized, upon invocation of a command. When a memorized attribute is created dynamically upon invocation of a command, it's value is not fetched from the database. But, if it is created in init_device() method, then the value gets fetched from the database. Attached is a rudimentary Java Device to check the same. It contains command CreateDynAttr to create dynamic attributes, and command DeleteDynAttr to remove dynamic attributes. Dynamic attributes are also created inside init_device() method. What is the way to enforce the fetching of the memorized value from the database for a TANGO attribute? Regards, Vatsal Trivedi
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Hello Vatsal, You are right, it does not work. The memorized values are only fetch at init. Sorry, there is no workaround. We have to fix this issue: https://github.com/tango-controls/JTango/issues/54 Best Regards, Gwenaëlle Abeillé Synchrotron SOLEIL |
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Hi Gwenaëlle, Thanks for taking a note of this. I found that this issue is already reported by someone else on the TANGO forum. Below is the link to the earlier discussion: http://www.tango-controls.org/community/forum/c/development/java/memorised-dynamic-attribute/ Regards, Vatsal Trivedi |