Webmaster Forum / ColdFusion / Advanced Techniques / November 2007

We recently went with an upgrade from Version: 7,0,0,91690 to Version:
8,0,0,176276 on our dev box!

ColdFusion 8 release notes says that if we get this error in the CodeAnalyzer,
we can ignore it. However, we are getting this error even while running the
application live.

ColdFusion Code dynamically builds the attributes necessary for the CFX called
CFX_SayHello, using a structure and finally calls the custam tag using the
following code:

<cfx_SayHello attributeCollection="#atts#" />

  We get the below error. Can I get some help from anybody who has any idea of
what might be causing this or a workaround?

The error reads as follows:

[b]The attributeCollection attribute cannot be used in combination with other
attributes in the cfx tag.[/b]

 The above tag call works if all attributes are sent separately in the below
fashion.

  <cfx_SayHello att1="abc" att2="bcd" />

  However, we need to use dynamic attributes for accomplishing our business
requirements. Also, it is a good methodology as the attributes vary in each
scenario when the tag is called. All our apps work fine except this. If we are
not able to fix this, we are planning to rollback our upgrade back to CF 7.

  Any workaround for this? I tried looping over the attribute collection
structure and generating a string that contains the tag call with all
attributes listed separately; thereby, using evaluate() function to evaluate
the string with tag call dynamically. However, this is failing. Is there any
other way or is Adobe working on a fix for CF 8? I can provide any other
details if needed.

The stack trace contains the follows:

coldfusion.compiler.validation.ArgumentsAttributeException: The
attributeCollection attribute cannot be used in combination with other
attributes in the cfx tag.
at coldfusion.compiler.TagNode.validateArgsAttr(TagNode.java:423)
at coldfusion.compiler.SemanticAnalyzer.cftag(SemanticAnalyzer.java:476)
at coldfusion.compiler.SemanticAnalyzer.transform(SemanticAnalyzer.java:104)
at coldfusion.compiler.Treewalker.postorder(Treewalker.java:86).. (truncated)

Thanks,
Arun

<title>Test Case</title>

    <p>This code demonstrates the inability of Coldfusion to send<br/>
    dynamic attributes (using attributeCollection) to a CFX tag.</p>
   
    <!--- <cfx_SayHello att1="abc" att2="bcd" />
        The CFX call above works. The below mentioned call fails.
    --->
   
    <cfset atts = structNew() />
    <cfset atts.att1 = "abc" />
    <cfset atts.att2 = "bcd" />
   
    <cfx_SayHello attributeCollection="#atts#" />

CFX Java Code:

import com.allaire.cfx.*;

/**
 *
 * @author    Arun Nallan (arun.nallan@gmail.com)
 */
public class SayHello_00 implements CustomTag
{
    boolean debug = false;
    Request request;
    Response response;
   
   
  public  void processRequest( Request request, Response response)
  {
     
      this.request = request;
      this.response = response;
     
    String dataIssueMsg = "", requestString = "";
   
    if(request.debug())
        debug = true;
   
    try
    {

      // Get all the parameter names
      String attribs[] = request.getAttributeList();
      String attrib = null;
     
      //Iterate over the names, getting the parameters
      for (int thisAttrib=0;thisAttrib<attribs.length;thisAttrib++)
      {
        attrib = attribs[thisAttrib];
       
        requestString += attrib.replaceAll("_", ".") + " = " +
request.getAttribute(attrib) + "<br/>";
      }
     
      response.write(requestString + "<br>");
     
    }

    // better to catch exceptions than to throw

    catch (Exception ex)
    {
      if(debug)
      {
          StackTraceElement stElements[] = ex.getStackTrace();
          response.writeDebug("<br><br>Exception during CFX
execution:<pre>"+ex.getMessage() + "\n");
          for(int stElementInd=0; stElementInd<stElements.length; stElementInd++)
              response.writeDebug(stElements[stElementInd].toString() + "<br>");
          response.writeDebug("</pre><br>");
      }
      else
          response.write("<br/><font color=\"red\">Error occured during CFX
execution. Please try to enable debug option for any debugging
information.</font><br/>");
     
      ex.printStackTrace();
      // out.flush();
      // out.close();
    }
    finally
    {
      if(debug)
     {
        response.writeDebug("<b>CFX Debugging Information</b>:<br>" +
getCFXInfo() + "<br><br>\n");
        // Get all the parameter names
        String parameters[] = request.getAttributeList();
        String param = null;
        //Iterate over the names, getting the parameters
        response.writeDebug("<table border=\"2\" bordercolor=\"blue\"
bgcolor=\"aliceblue\">");
        for (int thisParam=0;thisParam<parameters.length;thisParam++)
        {
          param = parameters[thisParam];
          response.writeDebug("<tr><td><b>" + param + "</b> :</td><td>" +
request.getAttribute(param).replaceAll("/^[ ]*$/","&nbsp;") + "</td></tr>");
        }
        response.writeDebug("</table>");
        }
    }
  }

  public String getCFXInfo()
  {
    return "Trial implementation of CFX for ColdFusion MX Bug support by Arun
Nallan";
  }   

}