Railo 4.2 Reference
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Function TRACE

Displays and logs debugging data about the state of an application at the time this function executes.
Tracks runtime logic flow, variable values, and execution time. Displays output at the end of the request or in the debugging section at the end of the request.


trace([string var,[string text,[string type,[string category,[boolean inline,[boolean abort,[boolean follow]]]]]]]):void


The arguments for this function are set. You can not use other arguments except the following ones.
Name Type Required Description
var string  No The name of a simple or complex variable to display. Useful for displaying a temporary value, or a value that does not display on any CFM page.  
text string  No string, which can include simple variable, but not complex variables such as arrays.  
type string  No Corresponds to the cflog type attribute:
  • Information
  • Warning
  • Error
  • Fatal Information  
  • category string  No string name for identifying trace groups  
    inline boolean  No if true displays trace code in line on the page in the location of the trace function,
    addition to the debugging information output.  
    abort boolean  No stops further processing of the request.  
    follow boolean  No If true, Railo follows the variable defined in the [var] attribute and will log any changes to it. Ignored when attribute [var] is not defined.