Custom Tags starting with $: lots of problems

I'm building an extension for MovableType template tags.
Those tags can be delimited in several ways: <MTNameOfTheTag>
or <$MTNameOfTheTag> or even <$MTNameOfTheTag$>. Since
the dollar sign is not allowed as tag name, i put a
prefix="<$" in tag definition, but now i have some problems:
1. even if in tag chooser i can see the dollar-prefixed tags,
i cannot see them in code hints (I mean "automatic" code hints,
those floating menus automatically made for every tag/every
attribute/every enumerated attriboption in library).
2. I tried to manually code tags in codehints.xml file with
the "<$ pattern (so i can change the icon associated to my
custom tags, too. That's will be very elegant) but I loose "child"
codehints menus: the first codehints menu (the one i manually made)
comes up, but those for attributes and attributes values don't.
3. With the solution in point 2 not only i loose "automatic"
codehints, but i have to write THREE files for every tag
(taglibrary, codehins, third party tags file). Lot of time :/
4. Dollar signs, in both start and end, are NOT part of the
name, but part of the tag, like a prefix or a suffix. With an
attribute i should have:
<$MTBlogName donald="goofie"$>
and not:
<$NTBlogName$ donald="goofie">
as actually i have
so, as i said...a lot of problems! i hope someone can help
me...its really an hard sunday, today! :/
tnx in advance

I think you might be moving into creating your own server
model.
Just a thought.

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Custom tag lib with output parameter

Hi,
I need a tag libray that gives me a specific element of a Vector.
Here there is the line I have in my jsp.
<ct:partizione tronco="${contenitoreCentralineTronco}" indice="index" partizione="tmpPartizione"/>
...-contenitoreCentralineTronco is an Object that contains a Vector of other specif objects.
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This is part of my tld file:
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jsp.error.beans.property.conversion
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It seems It trys to set the attribute "partizione" with the value "tmpPartizione", but partizioni should be an output attribut non input. The varible tmpPartizione doesn't exist... the tag should create it.
I realized I didn't get how I should create a tag with output parameters.
Anyone can explane me it?
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One suggestion: Take a closer look at the EL (expression language)
It has an excellent syntax for accessing collections/maps
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Cheers,
evnafets

Custom Tag Error with Weblogic SP9

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Are XML Tags starting with '_' underscore valid with XML DB?

Dear Experts,
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<_PARENT>
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How to use the JRun Custom tag library with Weblogic 5.1?

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[1]
http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=xover&group=weblogic.developer.interest.jsp
Joe Kamenar wrote:
>
I have a question. I need to do a sort on news articles in our database, sorting
by the date they were posted. I then want to take only the top 6 articles. We
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sortby = "creationDate DESC, headlineDate DESC" max="6" id="contentList" />
I need to get ALL the articles for the sort, then just take the most recent 6.
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counterId="i">
<% myStr=content.getIdentifier(); %>
<% if (i<6) {
%>
<div class="marginText">
<cm:printproperty id="content" name="title" encode="html" />
<a href="<%=new String(news_display.jsp?id="+myStr)%">">more</a>
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<% } %>
</es:foreachinarray>
However, when I run this, no results show up. What is the correct way to do this?
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Problem with custom tag

I have written a custom tag that I am having problems with. It works on some machines, but not on others. I have a page that uses many 'standard' tags. I have correctly set the URI etc, because all of my other tags work. However, on some machines, my custom tag gives me an error:
attribute does not support request time values
I'm assuming that I have the correct versions of standard.jar etc because all of the regular jstl 1.1 tags work. It is just my custom tag that throws an error.
here is the .tld for my tag:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
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about what tags need to be rendered on the page.</description>
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Any thoughts/help greatly appreciated...

I encountered the same problem in our environment. I did the same thing as
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          Also, with the nested tags you use you may also need to implement cloneable
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          instances.
          For instance if the outer tag kept a vector of references to the inner tag,
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          vector.
          "James Lynn" <[email protected]> wrote in message
          news:3af05d29$[email protected]..
          > > But
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          >
          >
          > --
          > James Lynn - Lead Software Architect
          > Oakscape - Java Powered eBusiness Solutions <http://www.oakscape.com/>
          >
          >

For your reference: A real life AppleScript script regarding custom tags

I'm working through a collection of photographs from iPhoto. One problem I have is that I have more than one set of the photographs and trying to eradicate duplicates and identify the true original images is rather difficult.
One thing that can help is referring to the complete EXIF data from the image file. Unfortunately, Aperture doesn't give us the complete EXIF set, only a subset. In addition, Aperture doesn't allow us to see the File date/time; only the Image date/time.
So I wrote this script. Before running the script, I batch renamed all of the images in my subject project using '<counter 4>—<Master Name>' to be sure that every image had a unique name. I then exported the masters from the subject project using '<Version Name>', the reason being that Aperture doesn't allow access to the file name via AppleScript. GraphicConverter will read the EXIF data from this exported set and the script will write most of the EXIF data back to the image in Aperture via custom tags.
One caveat: Aperture is *slow*. It requires almost 4 seconds to write each custom tag. With 6000+ images in my subject project, this script will take a while to complete.
The script:
tell application "Aperture"
activate
tell project "untitled Project" of folder ""
-- set theImages to every image version
-- move through the images one by one, deleting and creating the appropriate
-- custom tags from exif text obtained from exported versions via GraphicConverter.
repeat with i from 1 to theImages's length
tell theImages's item i
-- tell image version id "++s5iIgRT1uKC8lrxd5bMg" -- test image
delete (every custom tag whose name begins with "GC–")
set exifdata to getEXIF(name) of me
repeat with i from 1 to exifdata's length
copy ("GC– " & exifdata's item i's first item) to tName
copy (exifdata's item i's second item) to tValue
make new custom tag with properties {name:tName, value:tValue}
end repeat
end tell
end repeat
end tell
end tell
return
property exportedImagesFolder : alias "Bulbul:- exported from Aperture -:Canon IXUS 2:"
property exifTagsToIgnore : {"Make", ¬
"Model", ¬
"Resolution unit", ¬
"Y and C positioning", ¬
"Exposure time", ¬
"F number", ¬
"Exif version", ¬
"Meaning of each component", ¬
"Shutter speed", ¬
"Aperture", ¬
"Exposure bias", ¬
"Maximum lens aperture", ¬
"Metering mode", ¬
"Flash", ¬
"Lens focal length", ¬
"Unknown tag (1)", ¬
"Owner Name", ¬
"Color Space", ¬
"Interoperability Index", ¬
"Focal plane resolution unit", ¬
"White balance", ¬
"Resolution unit", ¬
"Offset to JPEG SOI", ¬
"Bytes of JPEG data"}
to getEXIF(vName)
copy alias ((exportedImagesFolder as string) & vName & ".jpg") to vFile
tell application "GraphicConverter"
copy (get file exif of vFile) to theEXIF
end tell
set AppleScript's text item delimiters to ","
repeat with i from 1 to theEXIF's length
set theEXIF's item i to ¬
{text item 3 of theEXIF's item i, text from text item 4 to -1 of theEXIF's item i}
end repeat
set AppleScript's text item delimiters to ""
set newEXIF to {}
set fileDate to ""
set imageDate to ""
repeat with i from 1 to theEXIF's length
copy theEXIF's item i's first item to tName
if tName is not in exifTagsToIgnore and ¬
tName does not start with "Unknown" then
set end of newEXIF to theEXIF's item i
if tName begins with "File date and time" then
set fileDate to date (theEXIF's item i's second item)
else if tName begins with "Date and time of original" then
set imageDate to date (theEXIF's item i's second item)
end if
end if
end repeat
if fileDate is not "" and imageDate is not "" then
if fileDate is less than (imageDate + 24 * 60 * 60) then
set end of newEXIF to {"File & Image Same Date", "True"}
else
set end of newEXIF to {"File & Image Same Date", "False"}
end if
end if
return newEXIF
end getEXIF

Correction 1:
please uncomment the line near the top of the script that reads:
-- set theImages to every image version
Correction 2:
writing the custom tags via AppleScript gets faster after Aperture's done it a few times.

Custom Tag doubt

I am trying to use custom tags in my JSP. I have illustrated the simplified version of my problem below. Can anyone tell me how to go about doing it?
Problem definition:
I have a JSP in which I retrieve a hashtable from request object using request.getAttribute() method. I need to display the commodity details present in the Hashtable using custom tags.
Input Hashtable contents(given in Key: Value format)
"Commodity.length": "2"
"Commodity[0].Weight": "34"
"Commodity[1].Weight": "43"
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Required JSP format
<gan:array name = "Commodity">
<table>
<tr>
<input type='text'
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</table>
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Desired HTML output:
<table>
<tr>
<input type='text'
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<input type='text'
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         value='43' />
</tr>
</table>
My question:
How can I go about implementing the tags starting with "gan:"?
Please note that there can be nested gan:array tags.

Check out the following few resources for a quick reference which you may find useful:
1)http://developer.java.sun.com/developer/technicalArticles/xml/WebAppDev3/
2)http://java.sun.com/webservices/docs/ea1/tutorial/doc/JSPTags6.html#66793
3)http://www-106.ibm.com/developerworks/library/j-taglib/
Rommel Sharma.

All custom tags fail in JBoss3.2.3/Tomcat 5.0.16 (works in Tomcat 4.x)

All pages that contain a custom tag fail with the following exception: HTTP Status 500 -
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exception
java.lang.NullPointerException
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     javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455)
     org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
     org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
note The full stack trace of the root cause is available in the Tomcat logs.Even a simple <struts-html: hidden ... /> tag causes this exception. As long as the page has no custom tags, it is served fine. The same web-app works as expected in JBoss3.2.3/Tomcat4.x.
It almost looks as if Tomcat is looking in a object pool for a custom tag object reference and when it fails to find one, throws a null-pointer instead of instantiating a new one to work with. (This is pure speculation on my part).
Did the TLD's req's change, or the setup for Tomcat? It's not my tags, even Struts tags fail. Any ideas why my tags aren't "resolving"?

Has anyone had any luck getting this to run or run into this problem? It fails even with a fresh JBoss install using tomcat 5.0.16.

Confusing execution sequence in Custom tag

I have a custom tag file with the name make_red.cfm that
makes a text passed to it to the color red.
The calling code looks like this:
Main page<br>
<cf_make_red result="myVar">
Dont mess with the Zohan!!!
</cf_make_red>
back to the main page<br>
The code in make_red.cfm looks something like this:
<cfoutput>
<hr>
ThisTag.ExecutionMode is #ThisTag.ExecutionMode#<br>
ThisTag.GeneratedContent is
#ThisTag.GeneratedContent#<br>
<hr>
<cfif ThisTag.ExecutionMode IS "Start">
Tag start<br>
<cfif structkeyexists(attributes,"result")>
<cfset evaluate("caller.#attributes.result# =
""CUSTOM_TAG_COMPLETED""")>
</cfif>
Tag processing<br>
<cfelseif ThisTag.ExecutionMode IS "End">
Tag processed<br>
<cfset ThisTag.GeneratedContent = "<font
color=""red"">"&ThisTag.GeneratedContent&"</font><br>">
The tag ends here<br>
</cfif>
</cfoutput>
The output looks like this:
Main page
ThisTag.ExecutionMode is start
ThisTag.GeneratedContent is
Tag start
Tag processing
Dont mess with the Zohan!!!
ThisTag.ExecutionMode is end
ThisTag.GeneratedContent is Dont mess with the Zohan!!!
Tag processed
The tag ends here
back to main page
My question is this:
As per the sequence of the statements in the custom tag code,
the text that appears in the beginning of tag file will be printed
after which the processing for the end tag happens in the
<cfif>. The text passed between the <cf_make_red> and
</cf_make_red> i.e. "Dont mess with the Zohan!!!" appears to
be printing before the end tag executes.
Shouldnt the text passed between the <cf_make_red> and
</cf_make_red> come after the end tag is processed? Because
thats where i am making the text red.
Could someone please explain this?

Doing a little more experimentation, I discovered that pageContext is null in the constructor, but not null in the otherDoStartTagOperations() method (called by the doStartTag() method of the tag's class... it's something Forte forces you to do).
Is this normal? I was under the impression that pageContext is supposed to be defined EVERYWHERE in any class that extends BodyTagSupport... including the class' own constructor.
On a related topic, is there documentation somewhere as to what, exactly, Forte is doing behind the scenes when it's managing a taglib (how it keeps track of them, where it puts config files, how the entries it makes in them are different or extended from the normal layout, etc.)? At the moment, I suspect that half of the grief I'm having with writing taglibs is caused by Forte itself forcing me to do things in a roundabout way that bears little resemblance to the ways shown in different books on the topic (and in fact all but ensures that nearly every published example will fail and require major rewriting because of the way it forces tag classes to be structured), but I don't see any easy way to let Forte handle compiling the classes and testing them with its embedded Tomcat, but do the config file housekeeping myself I can be in control of it.

Applescript for custom tags

hi there,
has anyone had any experience with applescript and custom tags? i've gotten so far as to display the name of custom tags i've added, but i want to find a way to batch erase some i've added on several thousand pictures. any hints?
j
here's a snippet of the code i'm trying out. there must be some way to delete the tag, but i'm not fluent in applescript. the logic of the script has been copied off another one i've found somewhere on the net. the author is Steven Banick (http://banick.com)
repeat with countOfPhotos from 1 to the count of selectedPhotos
-- Get the photo's properties for the operation
set currentPhoto to item countOfPhotos of selectedPhotos
tell currentPhoto
-- Reset the variables in the loop
set the photoCustomTags to ""
-- Retrieve the Photo Metadata
set the photoCustomTags to the name of custom tags
-- Scan the individual custom Tags from the assigned Custom tags
repeat with currentcustomTag from 1 to count of photoCustomTags
set currentcustomTag to item currentcustomTag of photoCustomTags
-- ver quais são as custom tags e tentar apagá-las
if currentcustomTag = CustomTagName1 then
-- display dialog currentcustomTag
delete the item currentcustomTag

I'm not sure if you can delete tags, but you can certainly empty them:
tell application "Aperture"
set selectedImages to the selection
repeat with i from 1 to number of items in selectedImages
set this_item to item i of selectedImages
try
set value of custom tag "Image ID" of this_item to ""
end try
end repeat
end tell
Just change "Image ID" to the name of your custom tag, and make sure that you only use it on the correct images...
Ian

Problem with custom tag attribute types

Hi,
I try to figure out how to pass an attribute to a custom tag that is of a type other than "String"?
In my case, I should pass an attribute with a type of "java.util.ResourceBundle".
My tag looks like this:
<tt:cs sel="ab" ce="<%= java.util.ResourceBundle.getBundle("de", Application.getApp().getLocale())%>" />
I always get the message that the attribute ce is empty.
Isn't it possible to have attirbutes that are of an other type than string? How could I solve this problem?
Thanks a lot!
Regards Patrick

In JSP 1.2, in the Tag Library Descriptor, you can specify a tagt attribute as
<attribute>
   <name>attr1</name>
   <required>true|false|yes|no</required>
   <rtexprvalue>true|false|yes|no</rtexprvalue>
   <type>fully-qualified_type</type>
</attribute> Notice the XML element <type>fully-qualified_type</type>
Not sure if you can do this in JSP 1.1

Custom Tags starting with $: lots of problems

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