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Advanced Storage VIs

LabVIEW 2013 Help

Edition Date: June 2013

Part Number: 371361K-01

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Owning Palette: Storage/DataPlugin VIs

Requires: Base Development System (Windows). This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Advanced Storage VIs to read, write, and query data when object types or property names are determined at run time.

The VIs on this palette can return storage error codes.

Palette ObjectDescription
Create Query ExpressionCreates a query expression to use with the Execute Query Expression VI to search for objects that meet the condition you specify. Wire data to the value input to determine the polymorphic instance to use or manually select the instance.
Execute Query ExpressionReturns data objects that meet the query expression.
Get Object InfoReturns information about the object you specify.
Get PropertyReturns the value of a property for a file, channel group, or channel. You must manually select the polymorphic instance you want to use.
Get Property InfoRetrieves the properties of a data file, channel group, or channel.
ID to RefnumReturns a refnum for an object you specify. Wire data to the storage refnum input to determine the polymorphic instance to use.
Merge Query ExpressionsMerges two query expressions. You can use the Create Query Expression VI to create query expressions that you want to merge.
Merge Storage RefnumsMerges two arrays of storage reference numbers into one larger array of refnums. This VI works properly only if the two sets of storage refnums are from the same data file. Wire data to either of the storage refnums inputs to determine the polymorphic instance to use or manually select the instance.
Refnum to IDReturns the ID for a data object.
Set PropertyDefines a property for a file, channel group, or channel. Wire data to the Value input to determine the polymorphic instance to use or manually select the instance.

 

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