Logger

Methods

General descriptions of the Logger methods follow:

Logger()

The calling program passes the name of the log file to open when invoking the Logger constructor. The constructor creates an instance of a PrintWriter object and ends by displaying the name of the output file.

displayStepElementInfo() and displayWorkObjectInfo()

The logger object displays descriptive information for Step Element or Work Object objects using Logger.displayStepElementInfo(object) or Logger.displayWorkElementInfo(object). In each method the logger assembles display lines, using VWStepElement.getParameterNames and VWStepElement.getParameterValue for step elements, and VWWorkObject.getFieldNames and VWWorkObject.getFieldValue for work objects.

log(Exception ex)

Prints a stack trace to the log file.

log(String text, Object arg1)

Writes the specified string to the log file, in a manner depending on the Object argument:

• If the Object argument is NULL, Logger.log(String text) is invoked
• If the Object argument is a string, the two string arguments are concatenated and Logger.log(String text) is invoked with the concatenated string as the argument.
• If the Object argument is an object or array of objects, StringBuffer() is called to convert the object(s) to a string, and Logger.log(String text) is invoked with the resulting string as the argument.

log(String text) and logAndDisplay(String text)

Logger.log(String text) writes the specified string to the log file. Logger.logAndDisplay(String text) writes the string to both the log file and stdout.