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package oracle.toplink.essentials.exceptions.i18n;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.Vector;
import oracle.toplink.essentials.internal.helper.Helper;
/**
* INTERNAL:
* Utility class to generate exception messages using ResourceBundles.
*
* Creation date: (12/7/00 10:30:38 AM)
* @author: Rick Barkhouse
*/
public class ExceptionMessageGenerator {
/**
* Return the message for the given exception class and error number.
*/
public static String buildMessage(Class exceptionClass, int errorNumber, Object[] arguments) {
final String CR = System.getProperty("line.separator");
String shortClassName = Helper.getShortClassName(exceptionClass);
String message = "";
ResourceBundle bundle = null;
// JDK 1.1 MessageFormat can't handle null arguments
for (int i = 0; i < arguments.length; i++) {
if (arguments[i] == null) {
arguments[i] = "null";
}
}
bundle = ResourceBundle.getBundle("oracle.toplink.essentials.exceptions.i18n." + shortClassName + "Resource", Locale.getDefault());
try {
message = bundle.getString(String.valueOf(errorNumber));
} catch (java.util.MissingResourceException mre) {
// Found bundle, but couldn't find exception translation.
// Get the current language's NoExceptionTranslationForThisLocale message.
bundle = ResourceBundle.getBundle("oracle.toplink.essentials.exceptions.i18n.ExceptionResource", Locale.getDefault());
String noTranslationMessage = bundle.getString("NoExceptionTranslationForThisLocale");
Object[] args = { CR };
return format(message, arguments) + format(noTranslationMessage, args);
}
return format(message, arguments);
}
/**
* Return the formatted message for the given exception class and error number.
*/
//Bug#4619864 Catch any exception during formatting and try to throw that exception. One possibility is toString() to an argument
protected static String format(String message, Object[] arguments) {
try {
return MessageFormat.format(message, arguments);
} catch (Exception ex) {
ResourceBundle bundle = null;
bundle = ResourceBundle.getBundle("oracle.toplink.essentials.exceptions.i18n.ExceptionResource", Locale.getDefault());
String errorMessage = bundle.getString("ErrorFormattingMessage");
Vector vec = new Vector();
if (arguments != null) {
for (int index = 0; index < arguments.length; index++) {
try {
vec.add(arguments[index].toString());
} catch (Exception ex2) {
vec.add(ex2);
}
}
}
return MessageFormat.format(errorMessage, new Object[] {message, vec});
}
}
/**
* Get one of the generic headers used for the exception's toString().
*
* E.g., "EXCEPTION DESCRIPTION: ", "ERROR CODE: ", etc.
*/
public static String getHeader(String headerLabel) {
ResourceBundle bundle = null;
try {
bundle = ResourceBundle.getBundle("oracle.toplink.essentials.exceptions.i18n.ExceptionResource", Locale.getDefault());
return bundle.getString(headerLabel);
} catch (java.util.MissingResourceException mre) {
return "[" + headerLabel + "]";
}
}
}