public Object execute(IEval aEval, IContext aCtx, Object[] aArgs) throws CommandException {
try {
Object[] lArgs = aArgs;
if (argList != null) {
lArgs = argList.guard(aArgs, aCtx);
}
if (argMapping != null) {
lArgs = argMapping.map(aEval, aCtx, lArgs);
}
Object lResult = method.invoke(instance, lArgs);
if (resultMapping != null) {
resultMapping.map(lResult, aCtx);
}
return lResult;
} catch (IllegalAccessException e) {
throw new CommandException(
String.format(
"Command '%s' illegal access exception.\n%s",
aArgs[0], CmdUtil.concatExceptionMessages(e)));
} catch (InvocationTargetException e) {
// The internal invocation threw an exception, we have to fetch the original exception.
// We don't add our own message at this level, this handler should be transparent because it
// does
// not add extra information.
Throwable lOrigExc = e.getTargetException();
throw new CommandException(CmdUtil.concatExceptionMessages(lOrigExc));
} catch (ArgMappingException e) {
throw new CommandException(
String.format(
"Command '%s' parameter mapping exception.\n%s",
aArgs[0], CmdUtil.concatExceptionMessages(e)));
} catch (ArgSpecException e) {
final String lMsg =
String.format(
"Command '%s' was invoked with incorrect arguments.\n%s",
aArgs[0], CmdUtil.concatExceptionMessages(e));
throw new CommandException(lMsg);
} catch (IllegalArgumentException e) {
final Class lClass = method.getDeclaringClass();
final String lMsg =
String.format(
"Command '%s' internal error. One of the parameters in method '%s' in class '%s' has a wrong type.",
aArgs[0], method.getName(), lClass.getName());
throw new CommandException(lMsg);
} catch (ResultMappingException e) {
throw new CommandException(
String.format(
"Command '%s' the result could not be bound to the context.\n%s",
aArgs[0], CmdUtil.concatExceptionMessages(e)));
}
}
