Data processors

A data processor is a function that operates on and transforms harvested data. You can add data processors to your model leaves, i.e. to Column nodes, to manipulate their values. The data processors are executed for each harvested row of data. After the data processor has executed, the value of the leaf is the value returned by the data processor. 

Attached the data processor to the leaf that should receive the resulting value. The input value, to the data processor, could either originate from the same leaf or from another leaf. You might for example want to clean the harvested data using a RegEx data parser. However, in most cases, data processors are added to manually created leaves, i.e. leaves that do not automatically retrieve their data during harvesting. If you for example harvest an Xml document, you might want to extract data from certain nodes to certain leaves. 

Click on the data processor item in the list box to display the properties of the data processor. The name of the list box item is the name of the currently selected data processor, or Disabled, if no data processor has been selected.

Select the Name property and click on the ellipsis button to change data processor.