Welcome!

You will be redirected in 30 seconds or close now.

ColdFusion Authors: Yakov Fain, Jeremy Geelan, Maureen O'Gara, Nancy Y. Nee, Tad Anderson

Related Topics: ColdFusion

ColdFusion: Article

Hidden Gems in CFMX

Hidden Gems in CFMX

With each new release of CFMX some features are trumpeted a lot and others seem to fall between the cracks. I call these "hidden gems,"and in CFMX there are quite a few.

In this article I'll uncover several features that don't warrant publicity in the popular top 10 (or even top 20) lists that Macromedia and others might put out. Perhaps they won't influence the average IT buyer considering an upgrade. Sure, things like J2EE integration and XML/Web services support are critical to many organizations, and things like CFCs and Flash remoting may fundamentally change the way we develop CF apps.

But it's been my experience that what really intrigues most developers is the little things that have changed, some of which just may serve to make every day of our development lives easier without any substantial changes in current practices.

The big new things in CFMX are of course praiseworthy, and I don't mean to diminish them. It's just that maybe for some developers one or more of these hidden gems could be the real "gotta have" trigger that motivates them to upgrade. Or solve a long-standing problem.

I've broken the topics into a couple of categories. I'm not even mentioning all the hidden gems, nor even all the important changes to CFMX. As such, this article shouldn't be considered a compendium of all hidden gems. I can only highlight several.

Not-So-Hidden Gems
Before proceeding, I want to point out that there are addititional new features of CFMX that may not get quite as much widespread acclaim. I don't consider them to be hidden gems since they're talked about often and are well documented. If you haven't yet looked into them, you should:

  • CFFUNCTION: Creates UDFs that can include tags
  • CFLOGIN, related tags: Support standardized login processing
  • CFIMPORT: Enables JSP custom tags
  • CFCHART: Replaces and exceeds CF5's CFGRAPH
  • Automatic compilation of CF templates
  • Support for internationalization (UNICODE)
  • Improved debugging with CFTRACE
There are others, but you get my point. There's a lot more to this new release than just the "top" few features that are so often discussed.

At the end of this article I'll point out several resources available for learning more about these and the other features I'll mention.

Hidden Gems in CFML
I've grouped the first set of hidden gems in a general category of CFML (ColdFusion Markup Language) gems, meaning new or changed tags and functions.

New Variable Scopes
More and more CF variable scopes have become available to use as structures. CFMX adds to this list the variables, caller, and server scopes. The value here is that you can use the CFLOOP COLLECTION tag to loop over the values in these scopes, or, more simply, you can display all the variables in a given scope with CFDUMP, among other things.

For instance, if you're not familiar with the server scope, try <CFDUMP VAR="#server#">. The output will show several useful variables you may never have known about, including several describing the CF server and the operating system it runs on. The server scope can also be written to, in which case any user on the entire server has shared access to the variables placed in that scope.

CFSETTING REQUESTTIMEOUT
It's now possible to programmatically override the "request timeout" duration for a given template, using <CFSETTING REQUESTTIMEOUT="nn">, where "nn" is a number of seconds. The CF Administrator has a value set that controls the maximum time a CF template is allowed to run before the server "times out" the template. If you have a template that needs to run longer than that default, this is the means to programmatically indicate that it should be allowed to run longer.

Some will recognize this as an alternative to (and in some ways an improvement over) the long-existing means to make this sort of template-specific request to override the "request timeout" value. In previous releases you could add REQUESTTIMEOUT=nn to the query string of a URL requesting a template, and that indicated the maximum runtime for the template. That approach had its pluses and minuses, but it's important to note that this old query string approach is no longer supported (any value provided is ignored).

Try/catch in CFSCRIPT, UDFs
Prior to CFMX, there was no way to perform try/catch exception handling in the CFSCRIPT language (which was the means to create User-Defined Functions). This limitation has been lifted and there is now a Try and a Catch statement available in CF SCRIPT. See the documentation references provided later for more details.

Note: As opposed to CFML's CFTRY and CFCATCH tags, in CFSCRIPT, a Catch is not embedded within a Try. Also, while there are CFTHROW and CFRETHROW tags in CFML, there are no corresponding throw and rethrow statements in CFSCRIPT.

"Importing" CF Custom Tag Libraries, "Adaptive Tags"
In my article "Using JSP Custom Tags in CFMX" (CFDJ, Vol. 4, issue 5), I showed how you can use the new CFIMPORT tag to allow your applications to use JSP custom tags. One thing I didn't mention is that there's a side benefit to CFIMPORT, even if you're not using JSP custom tags. You can also use it to point to a directory that holds one or more CF custom tags (any directory with a relative path or using a mapped path in the CF Administrator). With that, you can then use JSP-style custom tag syntax to refer to your CF custom tags.

For instance, if you used <CFIMPORT TAGLIB="pathname" PREFIX="mytags"> to create a reference to some directory of tags that included sometag.cfm, you could now refer to it in your code with <mytags:sometag>.

There's also an interesting new possibility being referred to as "server-side HTML" or "adaptive tags." If you leave off the PREFIX in a CFIMPORT or set it to the empty string, then CF will process every tag (other than CF tags and taglib:-prefixed tags) as if it's a custom tag. It will look in the named TAGLIB to see if there's a template of that name, and will run it if there is. So if you had a page with such a CFIMPORT and had a file named form.cfm tag in such a taglib, a <form> tag on that page would cause CF to run form.cfm like a custom tag as it processed the page. Very interesting possibilities. Again, it cannot be used to override CF tags.

By the way, for those using CFIMPORT for JSP custom tags, I failed to mention in the article (available online at www.sys-con.com/coldfusion/article.cfm?id=435) that the feature of importing JSP custom tags is not supported in the Professional edition of CFMX. It's available only in Enterprise (or the Evaluation or Developer edition, which it becomes after 30 days of trial). I should clarify, however, that the notion of using CFIMPORT to work with CF custom tags does indeed work in all editions.

Evaluations Within Expressions
This hidden gem may not excite many, and it's actually a return to the way things were done in the past. You can now perform evaluations within expressions without needing to use the evaluate() function. For instance, if you wanted to display how long it took to run a query that was just executed, you couldn't (in CF5) just say:

<cfoutput>Time used:
#cfquery.executiontime/1000#
seconds</cfoutput>
You'd need to use an evaluate around the expression cfquery.executiontime/1000. That's no longer needed. Removing it where it's not needed could yield a modest performance boost.

Miscellaneous Hidden Gems
Several other hidden gems that aren't part of CFML are worth pointing out.

CFMX Tag Updater for CF Studio
Folks who are still running CF Studio/HomeSite 4.5 or 5 will be thrilled to learn that they can arrange to install a "tag update" for the CFMX tags and functions. This way, the tag/function insight, tag editor, and tag/function help features work for most CFMX tags and functions (see www.macromedia.com/software/ coldfusionstudio/productinfo/resources/tag_updaters/). Also, there's an update for the Studio/HomeSite Help References (Help>Open Help References Window), available at http://download.macromedia.com/pub/homesite/ updates/cfml_ref.zip. Though the instructions in the zip suggest it works only for HomeSite + (part of the new Studio MX), the update also works in Studio/ HomeSite 4.5 or 5.

Free CFMX Hosting
(Nonproduction Basis)

If you're reluctant or unable to install CFMX, you may want to seek out a hosting company to do your testing. Fortunately, as of July, one company is offering free CFMX hosting for trial (nonproduction) purposes. See www.hostmysite.com/cfmx.hms for signup details. If anyone learns of other such instances, please let me know, or you can simply add them to the comments area of the online version of this article (see the end of this article for more on that).

Running CFMX on Mac OS X
One topic that seem to be generating a lot of buzz among some members of the community is the question of whether CFMX can run on Mac OS X. Regardless of whether and when Macromedia will support that configuration, there are people hot to make it work, and there are at least a couple of resources where you can learn more about these efforts. The first part of an article series by CFer Dick Applebaum is available on the O'Reilly site at www.oreillynet.com/lpt/a//javascript/ 2002/06/21/coldfusion_one.html.

Precompiling ColdFusionMX Templates
You may know that CFMX now compiles templates into Java classes. You may also have noticed that this means the first user to run a template after it's created or changed will suffer a small hit (up to a couple of seconds) when it's compiled the first time.

You can alleviate that wait by precompiling one or more templates. Unfortunately, the steps to do this take a little more room than we have for this article, so I'll save them for next month. There's also the matter of how to compile templates outside the default wwwroot directory (for those that have set up their servers to support that). In the meantime you can check out my blog at http://cfmxplus.blogspot.com/ for a preview of the topic.

Other Changes Worth Investigating
There are still more changes and/ or new features that I just don't have time to discuss. As mentioned in the next section, there are several resources from which you can learn more about these. Consider whether any of them may be of interest to you:

  • Several Query of Query enhancements.
  • Several CFLDAP changes.
  • CFMAIL spooling option changes.
  • Sort order in ListSort, ArraySort.
  • Date processing functions have short, medium, long formats.
  • Localization functions now follow Java standard rules.
  • Several Regular Expressions support changes.
  • CFTHROW can now throw an OBJECT.
  • CFLOG now always writes thread, date, and time.
  • CFHTTP reading text file in as query, new FIRSTROWASHEADERS attribute.
  • COM object access improvements.
  • Dynamic class reloading.
  • New commenting flexibility.
  • How to save the compiled template as .java (versus .class) files.
  • Can indicate alternative directory for templates outside of normal <cfusionmx_home>\wwwroot.
  • At least two Security Bulletins currently available.
  • Many CF admin settings are now saved in <cfusion_home>\lib\neoruntime.xml.
  • Examples in online CFML Reference are now housed at Macromedia.com (avoids security issues of running them locally).
One more is the new GetPageContext function. As I mentioned in my June article, "New Possibility in CFMX: Server-Side Redirects" (Vol. 4, issue 6), one of the most compelling possibilities to come out of that is allowing redirection from one CF page to another (or to a JSP or servlet) without a client-side redirect (which is what CFLOCATION does). See that article, available online at www.sys-con.com/coldfusion/article.cfm?id=450, for more information.

There are still many others. You really owe it to yourself to read the resources mentioned next to make sure there aren't changes that could concern you.

Indeed, some of these issues fall more into the area of "hidden traps" for migration. I intentionally am not writing about those aspects of the upgrade. There are ample resources for that, not the least of which is the new manual, Migrating CF5 Applications, available within the substantial new CFMX documentation set. See the next section for how to obtain that both in print and online.

Finding More Information
The sources of many of the features I've mentioned here are the very documents that come with the new release. The thing is, many people don't know they exist or for some reason don't bother to or don't have the time to read them. I always point them out when possible, and it's especially important for this new release.

The entire CFMX documentation set has been revamped and added to. There are four updated and five new books. If you're not aware that there is documentation, or figure the books are just for reference, you really need to check them out. So many questions people ask are answered in the manuals.

The most substantial of them, Developing ColdFusion MX Applications with CFML, is a whopping 900 printed pages! No need to wait for books to hit the market: Macromedia has written one, and it's been improved over previous releases. Besides covering all the new features in a user-guide (rather than reference) style, it even has improved discussions of "old" subjects such as Query of Queries, UDFs, and CFSCRIPT.

You may find the manuals on your server at http://<yourserver>/cfdocs/dochome.htm. They're also available online at http://livedocs.macromedia.com/cfmxdocs/, and in PDF form at www.macromedia.com/support/coldfusion/documentation.html. Or you can buy them in print format (only $50 for the set) at http://dynamic.macromedia.com/bin/MM/store/US/ product.jsp?category=/BooksVideos/Documentation/ ColdFusionServer&type=FULL.

The books do indeed cover most of the new features, but there are always hidden gems in the "Release Notes" ( www.macromedia.com/support/coldfusion/ releasenotes/mx/releasenotes_mx.html), the "Documentations Updates" ( www.macromedia.com/v1/Handlers/ index.cfm?ID=22811&Method=Full), and the "Documentation Additions" ( www.macromedia.com/v1/Handlers/ index.cfm?id=22993&Method=Full).

There is also substantial coverage of new features on the Macromedia Designer/Developer site ( www.macromedia.com/desdev/mx/coldfusion/). And the "Upgrade FAQ" ( www.macromedia.com/software/coldfusion/ productinfo/faq/upgrade/) and "New Feature Comparison Grid" ( www.macromedia.com/software/coldfusion/ productinfo/upgrade/comparison.html) can also be useful.

Finally, don't miss the example applications that you'll likely find installed on your CFMX server, at http://<yourserver>/cfdocs/exampleapps/index.cfm.

*  *  *

There's a lot more to CFMX than it may seem at first. Indeed, I'd say "there's gold in them thar hills." Keep mining these resources for still more hidden gems, and feel free to add them to the online version of this article (whose link I'll offer on my list of articles at www.systemanage.com).

More Stories By Charlie Arehart

A veteran ColdFusion developer since 1997, Charlie Arehart is a long-time contributor to the community and a recognized Adobe Community Expert. He's a certified Advanced CF Developer and Instructor for CF 4/5/6/7 and served as tech editor of CFDJ until 2003. Now an independent contractor (carehart.org) living in Alpharetta, GA, Charlie provides high-level troubleshooting/tuning assistance and training/mentoring for CF teams. He helps run the Online ColdFusion Meetup (coldfusionmeetup.com, an online CF user group), is a contributor to the CF8 WACK books by Ben Forta, and is frequently invited to speak at developer conferences and user groups worldwide.

Comments (1) View Comments

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


Most Recent Comments
dedi 05/04/03 12:42:00 AM EDT

give me for mare information about available resources.

@ThingsExpo Stories
Is the ongoing quest for agility in the data center forcing you to evaluate how to be a part of infrastructure automation efforts? As organizations evolve toward bimodal IT operations, they are embracing new service delivery models and leveraging virtualization to increase infrastructure agility. Therefore, the network must evolve in parallel to become equally agile. Read this essential piece of Gartner research for recommendations on achieving greater agility.
Smart Cities are here to stay, but for their promise to be delivered, the data they produce must not be put in new siloes. In his session at @ThingsExpo, Mathias Herberts, Co-founder and CTO of Cityzen Data, will deep dive into best practices that will ensure a successful smart city journey.
DevOps at Cloud Expo, taking place Nov 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 19th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long dev...
Internet of @ThingsExpo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 19th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago. All major researchers estimate there will be tens of billions devices - comp...
The 19th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Digital Transformation, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportuni...
SYS-CON Events announced today that Venafi, the Immune System for the Internet™ and the leading provider of Next Generation Trust Protection, will exhibit at @DevOpsSummit at 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Venafi is the Immune System for the Internet™ that protects the foundation of all cybersecurity – cryptographic keys and digital certificates – so they can’t be misused by bad guys in attacks...
SYS-CON Events announced today Telecom Reseller has been named “Media Sponsor” of SYS-CON's 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.
For basic one-to-one voice or video calling solutions, WebRTC has proven to be a very powerful technology. Although WebRTC’s core functionality is to provide secure, real-time p2p media streaming, leveraging native platform features and server-side components brings up new communication capabilities for web and native mobile applications, allowing for advanced multi-user use cases such as video broadcasting, conferencing, and media recording.
Data is the fuel that drives the machine learning algorithmic engines and ultimately provides the business value. In his session at Cloud Expo, Ed Featherston, a director and senior enterprise architect at Collaborative Consulting, will discuss the key considerations around quality, volume, timeliness, and pedigree that must be dealt with in order to properly fuel that engine.
Pulzze Systems was happy to participate in such a premier event and thankful to be receiving the winning investment and global network support from G-Startup Worldwide. It is an exciting time for Pulzze to showcase the effectiveness of innovative technologies and enable them to make the world smarter and better. The reputable contest is held to identify promising startups around the globe that are assured to change the world through their innovative products and disruptive technologies. There w...
Akana has announced the availability of version 8 of its API Management solution. The Akana Platform provides an end-to-end API Management solution for designing, implementing, securing, managing, monitoring, and publishing APIs. It is available as a SaaS platform, on-premises, and as a hybrid deployment. Version 8 introduces a lot of new functionality, all aimed at offering customers the richest API Management capabilities in a way that is easier than ever for API and app developers to use.
Personalization has long been the holy grail of marketing. Simply stated, communicate the most relevant offer to the right person and you will increase sales. To achieve this, you must understand the individual. Consequently, digital marketers developed many ways to gather and leverage customer information to deliver targeted experiences. In his session at @ThingsExpo, Lou Casal, Founder and Principal Consultant at Practicala, discussed how the Internet of Things (IoT) has accelerated our abil...
SYS-CON Events announced today that 910Telecom will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Housed in the classic Denver Gas & Electric Building, 910 15th St., 910Telecom is a carrier-neutral telecom hotel located in the heart of Denver. Adjacent to CenturyLink, AT&T, and Denver Main, 910Telecom offers connectivity to all major carriers, Internet service providers, Internet backbones and ...
With so much going on in this space you could be forgiven for thinking you were always working with yesterday’s technologies. So much change, so quickly. What do you do if you have to build a solution from the ground up that is expected to live in the field for at least 5-10 years? This is the challenge we faced when we looked to refresh our existing 10-year-old custom hardware stack to measure the fullness of trash cans and compactors.
The emerging Internet of Everything creates tremendous new opportunities for customer engagement and business model innovation. However, enterprises must overcome a number of critical challenges to bring these new solutions to market. In his session at @ThingsExpo, Michael Martin, CTO/CIO at nfrastructure, outlined these key challenges and recommended approaches for overcoming them to achieve speed and agility in the design, development and implementation of Internet of Everything solutions wi...
19th Cloud Expo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterpri...
Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more business becomes digital the more stakeholders are interested in this data including how it relates to business. Some of these people have never used a monitoring tool before. They have a question on their mind like “How is my application doing” but no id...
In today's uber-connected, consumer-centric, cloud-enabled, insights-driven, multi-device, global world, the focus of solutions has shifted from the product that is sold to the person who is buying the product or service. Enterprises have rebranded their business around the consumers of their products. The buyer is the person and the focus is not on the offering. The person is connected through multiple devices, wearables, at home, on the road, and in multiple locations, sometimes simultaneously...
Amazon has gradually rolled out parts of its IoT offerings in the last year, but these are just the tip of the iceberg. In addition to optimizing their back-end AWS offerings, Amazon is laying the ground work to be a major force in IoT – especially in the connected home and office. Amazon is extending its reach by building on its dominant Cloud IoT platform, its Dash Button strategy, recently announced Replenishment Services, the Echo/Alexa voice recognition control platform, the 6-7 strategic...
Cloud computing is being adopted in one form or another by 94% of enterprises today. Tens of billions of new devices are being connected to The Internet of Things. And Big Data is driving this bus. An exponential increase is expected in the amount of information being processed, managed, analyzed, and acted upon by enterprise IT. This amazing is not part of some distant future - it is happening today. One report shows a 650% increase in enterprise data by 2020. Other estimates are even higher....