I should also add that BSF supports more scripting languages then just ECMA e.g. Python.
Matt Liotta President & CEO Montara Software, Inc. http://www.montarasoftware.com/ 888-408-0900 x901 > -----Original Message----- > From: Rob Rohan [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, December 03, 2002 12:30 PM > To: CF-Talk > Subject: CFJava(script) Findings > > It is rather easy to add ECMA style scripting to cold fusion. It > simply > requires adding bsf.jar to your classpath and calling it correctly. There > are a few benefits to allowing such scripting. Here are a few: > * Constructers that require / accept nulls can be used in ECMA > blocks and > then the results can be passed to CF > * When creating lots of objects it seems to be faster then a lot of > createObject() calls > * Standard scripting style (for example, you can use > instead of gt > and > x++ instead of x=x+1 - which would help developers who are used to > JavaScript, C, C++, Java, C#, etc) > > Some Examples: > With ECMA Scripting in CF you can do standard xml function and > document > building which adds a whole new layer of xml integration. For example: > <...> > builder = docfactory.newDocumentBuilder(); > doc = builder.parse(new java.io.File("neo-mail.xml")); > doc.appendChild(doc.createElement("fresh")); > > variables.put("mydoc",doc); > </...> > > You can also script tasks in a "normal" java way which can add lower > level > power to a web application (in line): > <...> > fin = new java.io.FileInputStream(new java.io.File("neo-cron.xml")); > > crazy = new java.lang.StringBuffer(); > while((i=fin.read()) != -1){ > crazy.append(String.fromCharCode(i)); > } > </...> > > I think that is not only cool, but allows for powerful tweaking! > > Things That Suck: > The real reason I wanted in line java was to be able to make objects > and > use them in my apps (admin extends client - etc, etc). I was hoping ECMA > would let that happen, it kind of does but not really. For example: > <...> > obj = new Object(); > function _attach(){ > return 1; > } > obj.prototype.attach = _attach; > > variables.put("myobj",obj); > </...> > > returns a "NativeJavascriptObject" which I cannot use in CF. Which > really > sucks. I can pass it around - but it seems useless in CF. > > Summary: > It would be very easy to add a ECMA style scripting into CFMX (I did > it - > Macromedia can). I think that it would add more power to CF and help out > in > getting people to switch to CF. > In playing with this I have learned quite a bit about MX an am happy > to > report that is is done really well - like cf arrays seem to be > java.util.Vectors; I think that is an excellent choice. > I am done playing with this as I have more pressing obligations > (like my > job :). If anyone wants to play with this let me know and I'll give you > the > low down. > > +======================================================================= == > == > + > How to do it: > first get bsf.jar and add it to your classpath and restart cfmx > (look on > google) > then make a page like (watch out for line wrap): > > (I called it cfjava.cfm) > <cfparam name="attributes.script" default="" type="string"/> > <cfparam name="attributes.language" default="javascript" type="string"/> > <cfscript> > //create a bean manager > if(not isDefined("cfjava.manager")) > cfjava.manager = createObject("java","com.ibm.bsf.BSFManager"); > > //get a handle to the cf-factory > if(not isDefined("cfjava.factory")) > cfjava.factory = > createObject("java","coldfusion.server.ServiceFactory"); > > //make sure session, and variables have something in them or > //they wont be able to be passed > caller.variables.cj=true; > caller.session.cj=true; > //load the scopes as beans > cfjava.manager.declareBean("cgi", caller.cgi, caller.cgi.getClass()); > cfjava.manager.declareBean("variables", caller.variables, > caller.variables.getClass()); > cfjava.manager.declareBean("session", caller.session, > caller.session.getClass()); > > cfjava.xmlfactory = > createObject("java","org.apache.xerces.jaxp.DocumentBuilderFactoryImpl") ; > //TODO: load all services// > cfjava.manager.declareBean("docfactory",cfjava.xmlfactory, > cfjava.xmlfactory.getClass()); > cfjava.manager.declareBean("runtime", cfjava.factory.RuntimeService, > cfjava.factory.RuntimeService.getClass()); > cfjava.manager.declareBean("client", > cfjava.factory.ClientScopeService, > cfjava.factory.ClientScopeService.getClass()); > ////////////////////////// > > //Execute an expression. > cfjava.manager.exec( > "#attributes.language#", "javascript_code", 0, 0, > attributes.script > ); > </cfscript> > > +==========================================================+ > Then when you want to use it call it like so: > (I called this page scriptcaller.cfm) > > <cfsavecontent variable="javascript_code"> > crazy=null; > > variables.put("vectortest", new java.util.Vector()); > variables.put("hashtest", new java.util.HashMap()); > > try{ > fin = new java.io.FileInputStream( > new java.io.File("neo-cron.xml") > ); > > crazy = new java.lang.StringBuffer(); > while((i=fin.read()) != -1){ > crazy.append(String.fromCharCode(i)); > } > > }catch(e){ > doc=e.toString(); > } > > variables.put("jReturn",crazy.toString()); > </cfsavecontent> > <cfmodule template="cfjava.cfm" script="#javascript_code#"/> > > <cfdump var="#variables#"/> > +========================================================+ > > Have fun > Rob > > http://treebeard.sourceforge.net > http://ruinworld.sourceforge.net > Scientia Est Potentia > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Structure your ColdFusion code with Fusebox. 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