Yea, but I would have thought you would need to create an object first to access those methods, I didn't realise you should us ethem as though they are native CFML functions. But I guess this is considered undocumented and unsupported right just like calling the java runtime or service factory. Russ -----Original Message----- From: Barney Boisvert [mailto:[EMAIL PROTECTED] Sent: 28 December 2005 01:44 To: CF-Talk Subject: Re: Java substring
Every CF "thing" is a Java object. Strings are java.lang.String, numbers are java.lang.Double, structs are java.util.Map, arrays are java.util.List, queries are some weird-ass CF-specific object that I believe is a javax.sql.ResultSet, but could be mistaken. There's an enormous amount of power lurking just under CF's hood. But do remember that every time you use it, you stop writing a pure-CFML app and start writing a Java/CFML hybrid app. Not that that's necessarily a bad thing, just something to be careful for. One place to watch out is in automatic type conversions. Since CF is *mostly* typeless, you can call mid() and pass in a number, and CF will magically convert it to a string representation. Won't work with number.substring(), because a Double isn't a String. Most people consider this a feature of CFML, and it's a good example of a place where CFML != alternate Java syntax. In code: x = 45.6 y = mid(x, 1, 2); // yields "45" y = x.substring(0, 2); // MethodNotFoundException The other place to watch out is that CF uses one-based indexing (the first char in a string is char 1), while Java uses zero-based indexing (the first char in a string is char 0). JavaScript also uses zero-based indexing, so it should be familiar, but I know it's bit me a few times using Java methods in my CFML, because it's not obviously Java. Which brings me back to my "be careful" point. Readability suffers when your CFML has a lot of Java in it directly, because the person doing the reading has to continually evaluate whether they're looking at a Java statement or a CFML statement, as the rules are different. cheers, barneyb On 12/27/05, Snake <[EMAIL PROTECTED]> wrote: > Well there u go, learn something new every day, I didn't know you > could directly access java functions like that. > -- Barney Boisvert [EMAIL PROTECTED] 360.319.6145 http://www.barneyb.com/ Got Gmail? I have 100 invites. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:227743 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
