Feature Debugging

Feature Debugging is a tool that allows individual features to be inspected, one-by-one, during a translation. As might be imagined, this is very useful for debugging purposes.

Feature Debugging is triggered by "breakpoints"; workspace connections that are flagged by the user as a location where features should be inspected.

Here a user wishes to inspect data after processing by the AttributeRenamer transformer. A right-click on the connection and selection of Add Breakpoint is used to set it up:

The connection is highlighted in a darker black color with a red "stop" sign, to denote its new status:

Now the workspace is run using “Run with Breakpoints”:

When the first feature arrives at the breakpoint, the translation is temporarily paused and information about the feature displayed in a Feature Inspector window.

The upper part of the window shows a graphic representation of the feature; the lower part lists properties such as Feature Type and Coordinate System; plus attribute and geometry information.

There are four buttons at the foot of the Feature Inspector window:

Button	Operation	Description
	Step to Next Connection	This tool steps through the workspace one transformer at a time, showing the status of a feature as it is processed.
	Step to Next Breakpoint	This tool re-starts the translation, stopping the next time a feature reaches an inspection point.
	Continue Translation	This tool re-starts the translation, ignoring all further breakpoints.
	Stop Translation	This tool stops the translation.

The currently active connection is highlighted red to show it is the location where the translation is currently paused.

The current connection might be different to the original breakpoint when the "Step to Next Connection" tool has been used.