The Spotfire.Dxp.Data.VirtualColumn namespace contains classes used for adding virtual columns.
A virtual column is a data column that only retrieves values on-demand.
The collection of VirtualColumns available to the end-user can be extended. CustomVirtualColumnProducer for the base class that needs to be implemented in order to extend the application with new functionality.
Classes
| Class | Description | |
|---|---|---|
 | VirtualColumn |
A column where the values are fetched one by one as they're needed rather than all at once.
|
| VirtualColumnPropertyNames |
Contains property name constants for the public properties of VirtualColumn.
|
| VirtualColumnAvailableInputCollection |
Represents the available inputs for a virtual column producer.
|
| VirtualColumnAvailableInputCollectionPropertyNames |
Contains property name constants for the public properties of VirtualColumnAvailableInputCollection.
|
| VirtualColumnCollection |
A collection of virtual columns.
|
| VirtualColumnCollectionPropertyNames |
Contains property name constants for the public properties of VirtualColumnProducerCollection.
|
| VirtualColumnInputCollection |
Represents the inputs for one or several virtual columns.
|
| VirtualColumnInputCollectionPropertyNames |
Contains property name constants for the public properties of VirtualColumnInputCollection.
|
| VirtualColumnInputIdentifier |
Used to uniquely identify the inputs of a virtual column.
|
| VirtualColumnProducer |
A class which produces virtual columns.
|
| VirtualColumnProducerPropertyNames |
Contains property name constants for the public properties of VirtualColumnProducer.
|
 | VirtualColumnProducerVirtualColumnInputIdentifiers |
Implement this to contain VirtualColumnInputIdentifier objects to uniquely identify each input collection in this VirtualColumnProducer.
|
| VirtualColumnProducerCollection |
A collection of virtual column producers.
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| VirtualColumnProducerCollectionPropertyNames |
Contains property name constants for the public properties of VirtualColumnProducerCollection.
|
| VirtualColumnsConfigurator |
Used to add the virtual columns to a VirtualColumnProducer.
|
| VirtualValueRequest |
Represents the input and result for a value in a virtual column.
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| VirtualValueWorkerTModel |
A class that serves as a worker for a VirtualColumnProducer.
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