Optimizing Expressions in Form Fields

Some activities performed in forms call resources that are external to Waveset. Accessing these resources can affect Waveset performance, especially if the results contain long lists of values, such as compiling a list of groups or email distribution lists.

To improve performance during these calls, follow the guidelines in “Using a Java Class to Obtain Field Data” in Oracle Waveset 8.1.1 Deployment Reference.

Also, avoid using JavaScript in performance-critical expressions such as <Disable> expressions. Short XPRESS expressions are easier to debug if you use the built-in tracing facilities. Use JavaScript for complex logic in workflow actions.

If a form is slow to display, you can use the debug/Show_Timings.jsp page to determine the problem. Look for calls to Formconvert.convertField(). This method shows how long each field took to compute its value.

You can use the FormConverter JMX MBean to identify specific fields in a form that are slow to compute or render to HTML.