Exceptions

How to work with exceptions in XtendM3

Table of contents

1. Exception capabilities
   1. Generic Java Exceptions
      1. Example code
   2. XtendM3 Specific Exceptions

Exception capabilities

In the context of XtendM3, it is possible to catch generic Java exceptions listed below in the Generic Java Exceptions section.
It is not possible to throw generic Java exceptions, these can only be caught.
Some XtendM3 specific exceptions exists, that can be thrown either via API calls or via Groovy throw(). Documentation on the XtendM3 exceptions API are available in the API Specification/ExceptionAPI section under Documentation.

Generic Java Exceptions

The following exceptions can be caught in XtendM3 code:

Runtime exceptions

• NumberFormatException
• DateTimeException

Compile time check

• FileUtilException
• Specific Java exceptions
  • E.g., java.IOException
  • Essentially, any exception within a package beggining with .java can be caught

Example code

Example code for catching generic Java exceptions.

NumberFormatException

String aString = null;
Integer anInteger = 10;
try {
  anInteger = aString.toInteger(); 
} catch(NumberFormatException e) {
  logger.debug("Execution failed with exception: ${e}");
}

DateTimeException

String aString = null;
try {
  aString = LocalDate.now().format(DateTimeFormatter.ofPattern("yyMMdd")); 
} catch(DateTimeException e) {
  logger.debug("Execution failed with exception: ${e}");
}

FileUtilException

String fileSize = null;
try {
  fileSize = textFiles.size("fileName"); 
} catch(FileUtilsException e) {
  logger.debug("Execution failed with exception: ${e}");
}

XtendM3 Specific Exceptions

Three levels of XtendM3 exceptions are available to throw. Interactive, MI Response and Adaptive. Detailed documentation and example code on each available exception are available in the API Specification/ExceptionAPI section under Documentation. API documentation is also available in the API documentation section in the XtendM3 app in H5.

Interactive exceptions
Interactive exceptions can be thrown from Trigger extension contexts. Most of the available XtendM3 specific exceptions are interactive exceptions, ranging from ShowOkDialogException to ShowErrorException.

MI Response exceptions
MI response exceptions are used for throwing exceptions from Transaction contexts, to indicate write errors.
Can be thrown with just a String message. Alternatively a String field and String errorCode can be added for additional verbosity.

Adaptive exception
The AdaptiveShortCircuitException can be thrown from any given XtendM3 context and will adapt to the context of execution.