AOP ROCKS

Mon, 22 Jan 2007 18:37:32 GMT

I was at the point to adding Validation to my Model tBLog engine, a transposition of Mark Mandel's tBlog example application to Model Glue Unity.

ARG, I don't want to muck up controller or model code with Validation! Where the heck will it go cleanly? Example of updatePost:

ModelGlue.xml:

<event-handler name="updatePost">
<broadcasts>
 <message name="checkUserLogin" />
 <message name="updatePost" />
</broadcasts>
<results>
 <result do="listPosts" />
</results>
</event-handler>

BlogController.cfc (Front controller for HTML requests):

<cffunction name="updatePost" hint="I ask the model to save / update a Post." access="public" returnType="any" output="false">
<cfargument name="event" type="any" />

<cfset var ID = arguments.event.getValue("ID") />
<cfset var Title = arguments.event.getValue("Title") />
<cfset var body = arguments.event.getValue("body") />
<cfset var PostFile = arguments.event.getValue("PostFile") />
<cfset var VideoFile = arguments.event.getValue("VideoFile") />
<cfset var Category = arguments.event.getValue("Category") />
<cfset var User = arguments.event.getValue("User") />
<cfset var IDComment = arguments.event.getValue("IDComment") />

<cfset var updatePost = variables.BlogService.updatePost(ID, Title, body, PostFile, VideoFile, Category, User, IDComment) />

BlogService.cfc (service layer to react to requests, HTML front controller or remote requests):

<cffunction name="updatePost" hint="I ask Transfer to update a post." access="public" displayname="Save Post" returntype="any" output="false">
<cfargument name="ID" hint="I am the ID of the Post that is being updated. I am required.">
<cfargument name="Title" hint="I am the Title of the post. I am required.">
<cfargument name="body" hint="I am the body of the post. I am required.">
<cfargument name="PostFile" hint="I am the PostFile of the post.">
<cfargument name="VideoFile" hint="I am the VideoFile of the post.">
<cfargument name="Category" hint="I am the list of Catagories of the post. I am required.">
<cfargument name="User" hint="I am the User who posted the post. I am required.">
<cfargument name="IDComment" hint="I am the list of comments that will be deleted. I am required.">

<cfset var post = variables.transfer.get("post.Post", arguments.ID) />

<cfset var categories = listToArray(arguments.category)>
<cfset var len = ArrayLen(categories) />
<cfset var PostFileName = "" />
<cfset var VideoFileName = "" />

<cfif len(arguments.PostFile)>
 <cfset PostFileName = variables.FileService.uploadPostFile(arguments.PostFile) />
 
 <cfset post.setPostFileName(PostFileName) />
</cfif>

<cfif len(arguments.VideoFile)>
 <cfset VideoFileName = variables.FileService.uploadVideo(arguments.VideoFile) />
 
 <cfset post.setVideoFileName(VideoFileName) />
</cfif>

<cfset post.setTitle(arguments.title) />
<cfset post.setBody(arguments.Body) />

<cfset post.setUser(variables.transfer.get("user.User", arguments.user)) />

<cfset post.clearCategory() />

<cfloop from="1" to="#len#" index="counter">
<cfset category = variables.transfer.get("system.Category", categories[counter]) />
<cfset post.addCategory(category) />
</cfloop>

<cfset post.sortCategory() />

<cfif (StructKeyExists(arguments, "IDComment"))>
 <cfset IDComments = listToArray(arguments.IDComment) />
 <cfset len = ArrayLen(IDComments) />
 <cfloop from="1" to="#len#" index="counter">
 <cfset comment = transfer.get("post.Comment", IDComments[counter]) />

<cfset x = transfer.delete(comment) />
 </cfloop>
</cfif>

<cfset x = transfer.save(post) />

</cffunction>

FileService.cfc called by BlogService.cfc(updatePost)

<cffunction name="uploadPostFile" hint="I upload a file to the public file directroy. I then then retrun the name." displayname="Upload Post File" access="public" returntype="any" output="false">
<cfargument name="PostFileName" hint="I am the file being uploaded. I am required." />

<cffile
 action="upload"
 destination = "#ExpandPath('/com/blog/views/public/uploads/posts/')#"
 nameconflict="overwrite"
 filefield="PostFile" />
 
 <cfset PostFileName = (#cffile.SERVERFILE#)>

<cffunction name="uploadVideo" hint="I parse a video into flash with FFMPEG (Google: FFMPEG), I then place the flash file into the public video directroy. I then put the uploaed video into the 'origionalvideo' folder at the COM level." displayname="Upload Video" access="public" returntype="any"output="false">
<cfargument name="VideoFile" hint="I am the video being uploaded. I am required." />

<cffile
 action="upload"
 destination = "#ExpandPath('/origionalvideo/')#"
 nameconflict="overwrite"
 filefield="VideoFile" />

<cfexecute name = "#ExpandPath('/')#ffmpeg.exe"
 arguments = "-i #ExpandPath('/origionalvideo/')##cffile.SERVERFILE# -s 320x240 -r 15 -b 2000 -ar 44100 -ab 64 -ac 2 #ExpandPath('/com/blog/views/public/uploads/video/')##replace(cffile.SERVERFILE, ".", "")#.flv"
 outputFile = "C:\"
 timeout = "90000000">
 </cfexecute>

<cfset VideoFileName = "#replace(cffile.SERVERFILE, ".", "")#.flv" />

Now if anyone can tell me where a logical place to put Security or Validation is please?

ColdSpring AOP HOW I LOVE THEE:

<bean id="ValidationAdvisor"
 class="coldspring.aop.support.NamedMethodPointcutAdvisor">
<property name="advice">
 <ref bean="Validation" />
</property>
<property name="mappedNames">
 <value>updatePost</value>
</property>
</bean>

<bean id="Validation" class="&applicationMapping;aspects.Validation" singleton="true" autowire="byName" />

<bean id="BlogService"
 class="coldspring.aop.framework.ProxyFactoryBean">
<property name="target">
 <ref bean="TargetBlogService" />
</property>
<property name="interceptorNames">
 <list>
 <value>securityAdvisor</value>
 </list>
</property>
</bean>

<bean id="TargetBlogService" class="&applicationMapping;model.BlogService" singleton="true" autowire="byName" />

I am consuming my addPost incoming request with the ColdSpring framework

My core blog code dose not change! HAPPY ME HAPPY ME!

Thanks Dave Ross! ColdSpring's AOP ROCKS

Delivering HTML objects???

Wed, 17 Jan 2007 19:23:48 GMT

Anyone see any benefit for a blog engine to serve its CORE HTML from a Proxy?

This way when you mess with your templates you are never messing with the BASE application HTML, which I would like. Especially if what was coming in was SUPER defined and ease to understand.

ColdSpring can "look" at the request and then after the "whole request" is finished run a method, I'm thinking its called renderHTML which will deliver a XHTML. Then inside your templates you might have something like:

indexTemplate:
<!-------------------------- >
Posts 
<cfoutput>
#getAllPosts()#
</cfoutput>
<!-------------------------- >

Now getAllPosts would return the approate fully formed XHTML so all you need to worry about it the .css styling.

Also if you ever wanted to change the XHTML the files would be in a "DisplayFoundation" directory.

I just like the idea of getting "displayObject" that I can put anywhere on the page and NEVER have to worry about "Forming" the dataObjects that are coming in from Model-Glue.

Just a thought or it might be complicated? I don't know, but you all are messing around with the blogs and would have a better perspective.

PS: I finally "got" ColdSpring this weekend. THANK GOD FOR COLDSPRING!!

Front End Is Trying to Kill Me

Tue, 21 Nov 2006 17:41:15 GMT

I am TOTALLY tired of the front end nightmare!

Will Flex save me? I just printed out the Flex Store 2_1 and have been reading Steve Webster’s (how kewl is Webster for the name of a RIA framework creator???!?!?, LOVE IT) 6 part series on Flex Development. I think Flex will be the answer I have been looking for.

What will Flex save me from? STUPID BROWSERS!!!!! I love how CF makes making the backend easy, but trying to wrestle Yahoo UI, Dojo, or script.aculo.us, or my fav TwinHelix (MOST LIGHT WEIGHT, MOST CROSS BROWSER SUPPORT DTHML LIB out there) to solve some problem that my designers have made every time is getting to be a bummer.

F this HTML stuff, give me something that works. I think it is here.

I think I am going to try to give Reactor Blog a Flex front end.

Ill post code if it comes out.

bigLove to ColdFusion,
ja

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AOP ROCKS

Delivering HTML objects???

Front End Is Trying to Kill Me