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A
Anonymous
September 15, 2010
Question

Wait for create image to complete...

  • September 15, 2010
  • 2 replies
  • 457 views

I have an application that uses function in a cfc file. One function creates a jpeg from a byte array. This works fine. However, if I"m updating the image I need Flash to wait for the image to be created before it trys to reload it. How do I modify my code to wait and not do the return until the cffile action is complete?

<!-- save jpeg -->
<cffunction name="createJpeg" access="remote" output="false" returntype="boolean">
  <cfargument name="send_image_data" type="string" required="yes">
  <cfargument name="send_image_path" type="string" required="yes">

    <cfset bindecode = BinaryDecode(send_image_data, "Base64")>
    <cfset pathtowrite='#send_image_path#'>
<cffile action="write" file="#pathtowrite#" output="#bindecode#" nameconflict="overwrite" />

<cfreturn "1">
</cffunction>

Thanks!

    This topic has been closed for replies.

    2 replies

    josh_adams1
    josh_adams1
    Participating Frequently
    September 21, 2010

    Try using FileOpen(), FileWrite(), and then FileClose() instead of cffile.  Let me know how that goes for you!

    A
    Anonymous
    September 17, 2010

    I'm thinking you can probably use a <cfloop> tag to check for the file.  Maybe you can try to read it in a loop?  You'll want to have a timeout so that if there's a problem the whole thing doesn't hang.  My coldfusion is a bit iffy but In pseudo code something like this....

    set start = Now()

    loop

        if read file exit loop

        if Now()-start GT 180 exit loop

        sleep(1000)

    endloop

    Othewise, maybe using sleep() to wait for long enough to process the image way also work, though less efficient.

    Hope this helps

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