Thanks Jay, the problem I see with this solution is that I have to create a seperate decorator for each object property I want to sort on and we use display tables all over the place where we need to be able to sort Strings like this. Since sorting strings case-insensitively is such a common thing I was hoping that there was functionality in the tag to handle this without that much work (or maybe I'm just being lazy). Is there a way to pass a property name in when using a decorator (other than the decorator property name) so I could create a generic decorator of this type?
Ryan -----Original Message----- From: Paulsen, Jay [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 02, 2003 6:35 AM To: [EMAIL PROTECTED] Subject: RE: [displaytag-user] easy way to sort simple String columns case-insensitively? You can't subclass String because it's final. But you can create a String wrapper class that implements Comparable and perform your case insensitive compare there. Then, in a decorator, return an instance of this wrapper class. Don't know if this is the best way - but it is functional. example: /* String wrapper class to implement case insensitive sorting */ public class CaseInsensitiveString implements Serializable, Comparable { private String s; public CaseInsensitiveString(String s) { this.s = s; } public String toString() { return s.toString(); } public int compareTo(Object o) { // ignore case on compare return this.s.compareToIgnoreCase(((CaseInsensitiveString) o).s); } } /* decorator */ public class MyDecorator extends TableDecorator { public CaseInsensitiveString getMyString() { // build a case insensitive string object to wrap the string representation // of your object or object property as needed return new CaseInsensitiveString(((MyObject) getObject()).getSomeProperty()); } } HTH -Jay > -----Original Message----- > From: Ryan Bell [mailto:[EMAIL PROTECTED] > Sent: Tuesday, April 01, 2003 5:20 PM > To: [EMAIL PROTECTED] > Subject: [displaytag-user] easy way to sort simple String columns > case-insensitively? > > > I've looked through the information at > http://edhill.its.uiowa.edu/display/ and saw no easy way to > get a sort of a column of strings case-insensitive in the > display tag. I'm not talking about the initial sorting but > the sort once a column that is sortable is clicked. Is there > an easier way to do this than subclassing String and > overriding the compareTo method? > > Thanks, > Ryan > > > ------------------------------------------------------- > This SF.net email is sponsored by: ValueWeb: > Dedicated Hosting for just $79/mo with 500 GB of bandwidth! > No other company gives more support or power for your dedicated server > http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ > _______________________________________________ > displaytag-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/displaytag-user > ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ _______________________________________________ displaytag-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/displaytag-user ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/ _______________________________________________ displaytag-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/displaytag-user
