Expressions View

The Expressions view enables users to inspect results of defined expressions while debugging a model. The Expressions view opens automatically when an item is added to the view. Entries in the Expressions view can be selected to have more detailed information be displayed in the Detail Pane. When debugging a model, data that contains variables can be expanded to show the variables and the fields the variables contain.



The Expressions view. The detail pane is the area at the bottom of the view displaying text.

You can evaluate expressions in the context of a stack frame when the VM suspends a thread.

To evaluate an expression

  1. Suspend the stack frame (for example, by creating a breakpoint) in which expression is to be evaluated. You can inspect the variables accessible in the current evaluation context using the Variables view.
  2. Click the Add Expression button on the Expressions view toolbar and construct a Java expression in the New watch expression dialog box that opens.

  3. Click OK to save the expression. It will be evaluated for the current step and re-evaluated during the subsequent execution steps. You can also evaluate it manually by clicking the Reevaluate Expression button on the Expressions view toolbar.

To show/hide the Expressions view

  1. Choose View > Expressions from the main menu.

You can manage the set of expressions using the number of toolbar buttons of the Expressions view:

Command

Action

Edit Expression

Allows you to edit the currently selected expression.

Reevaluate Expression

Re-evaluates the currently selected expression(s).

Add Expression

Allows you to add a watch expression.

Remove Expression

Removes the currently selected expression(s) from the view.

Related topics

Working with views