package er.extensions.formatters;
import java.text.DateFormatSymbols;
import java.text.Format;
import java.util.Hashtable;
import com.webobjects.foundation.NSTimestamp;
import com.webobjects.foundation.NSTimestampFormatter;
import er.extensions.localization.ERXLocalizer;
/**
* Provides localization to timestamp formatters.<br />
*
*/
public class ERXTimestampFormatter extends NSTimestampFormatter {
/**
* Do I need to update serialVersionUID?
* See section 5.6 <cite>Type Changes Affecting Serialization</cite> on page 51 of the
* <a href="http://java.sun.com/j2se/1.4/pdf/serial-spec.pdf">Java Object Serialization Spec</a>
*/
private static final long serialVersionUID = 1L;
/** holds a reference to the repository */
private static final Hashtable _repository = new Hashtable();
protected static final String DefaultKey = "ERXTimestampFormatter.DefaultKey";
/** The default pattern used in the UI */
public static final String DEFAULT_PATTERN = "%m/%d/%Y";
static {
_repository.put(DefaultKey, new ERXTimestampFormatter());
}
/**
* The default pattern used by WOString and friends when no pattern is set.
* Looks like this only for compatibility's sake.
* @param object
*/
public static Format defaultDateFormatterForObject(Object object) {
Format result = null;
if(object != null && object instanceof NSTimestamp) {
result = dateFormatterForPattern("%Y/%m/%d");
}
return result;
}
/**
* Returns a shared instance for the specified pattern.
* @return shared instance of formatter
*/
public static NSTimestampFormatter dateFormatterForPattern(String pattern) {
NSTimestampFormatter formatter;
if(ERXLocalizer.useLocalizedFormatters()) {
ERXLocalizer localizer = ERXLocalizer.currentLocalizer();
formatter = (NSTimestampFormatter)localizer.localizedDateFormatForKey(pattern);
} else {
synchronized(_repository) {
formatter = (NSTimestampFormatter)_repository.get(pattern);
if(formatter == null) {
formatter = new NSTimestampFormatter(pattern);
_repository.put(pattern, formatter);
}
}
}
return formatter;
}
/**
* Sets a shared instance for the specified pattern.
*/
public static void setDateFormatterForPattern(NSTimestampFormatter formatter, String pattern) {
if(ERXLocalizer.useLocalizedFormatters()) {
ERXLocalizer localizer = ERXLocalizer.currentLocalizer();
localizer.setLocalizedDateFormatForKey(formatter, pattern);
} else {
synchronized(_repository) {
if(formatter == null) {
_repository.remove(pattern);
} else {
_repository.put(pattern, formatter);
}
}
}
}
/**
*
*/
public ERXTimestampFormatter() {
super();
}
/**
* @param arg0
*/
public ERXTimestampFormatter(String arg0) {
super(arg0);
}
/**
* @param arg0
* @param arg1
*/
public ERXTimestampFormatter(String arg0, DateFormatSymbols arg1) {
super(arg0, arg1);
}
}