The following topics are present about how to follow XSLT/XQuery processing and detect errors in your stylesheets or XQuery documents:
To debug a stylesheet or XQuery document follow the procedure:
Open the source XML document and the XSLT/XQuery document.
If you are in the <oXygen/> XML perspective switch to the <oXygen/> XSLT Debugger perspective in case of XSLT debugging or to the <oXygen/> XQuery Debugger in case of XQuery debugging with one of the actions (here explained for XSLT):
→ → +<oXygen/> XSLT Debugger
The toolbar button
Debug scenario . This
action initializes the Debugger perspective with the
parameters of the transformation scenario. Any modification
applied to the scenario parameters (the transformer engine,
the XSLT parameters, the transformer extensions, etc) will
be saved back in the scenario when exiting from the Debugger
perspective.
Select the source XML document in the XML source selector of the Control toolbar In case of XQuery debugging if your XQuery document has no implicit source set the source selector value to NONE.
Select the XSL/XQuery document in the XSL/XQuery selector of the Control toolbar.
Set XSLT/XQuery parameters from the button available on the Control toolbar.
Step through the stylesheet using the buttons available on the Control toolbar:
Step into,
Step over,
Step out,
Run,
Run to cursor,
Run to end,
Pause,
Stop Examine the information in the Information Views to find the bug in the transformation process.
![[Note]](img/note.gif)