Tag Libraries : multiple classes for same tag

Hi ,
I have a tag library like this
<tag>
<name>process</name>
<tagclass>packagea.page1</tagclass>
<attribute>
<name>name</name>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
</tag>
I have 15 tags like this with the same 'process' name but ofcourse different tagclass files (corresponding to 15 different PAGES)
Now, while the container encounters the tag on any PAGE (all the tags on all the PAGES will have the same prefix 'process'), how will the container know which class file to pick from out of the 15 different class files ???
does this happen sequentially or is there some mechanism of caching within the container ... ??

probably it takes the first, if it's not throwing an exception about it. You should have 1 tag library and multiple tags which should have separate names, not separate tag libs with 1 tag each.

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I am trying to create multiple profiles, using unified profile types, to
store multiple values for same properties. Here my intention of using
'unified profile types' is to create multiple profiles (to store multiple
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maintained by Personalization server. Also, I am trying to use the same
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http://e-docs.bea.com/wlcs/p13n/users.htm#1068901 )
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rules to select content for the user or conditionally execute logic (
http://e-docs.bea.com/wlcs/p13n/rules.htm )
Ture Hoefner
BEA Systems, Inc.
1655 Walnut Street; suite 200
Boulder, CO 80302
www.beasys.com

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I have recently written a custom tag but I have been unable to implement it in a JSP because the server is unable to load the .class file. Below I have supplied the files that contribute to make up the custom tag, aswell as the JSP file used to implement it.
genericDBConnect.java
stored in C:\jakarta-tomcat-3.2.3\webapps\exper\WEB-INF\classes\jsp\tags\dbase
package jsp.tags.dbase;
import java.io.*;
import java.sql.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
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private String odbcDriver;
private String dataSource;
public void setOdbcDriver(String driver)
odbcDriver = driver;
public void setDataSource(String source)
dataSource = source;
public int doStartTag() throws JspException
return EVAL_BODY_INCLUDE;
public int doEndTag() throws JspException
try{
pageContext.getOut().print("This is the value of odbcDriver = " + odbcDriver + "and dataSource = " + dataSource);
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WEB.XML
Stored in: C:\jakarta-tomcat-3.2.3\webapps\exper\WEB-INF
<!DOCTYPE web-app PUBLIC
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<web-app>
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genericdbconnecttags.tld
C:\jakarta-tomcat-3.2.3\webapps\exper\WEB-INF
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
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<taglib>
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</attribute>
<attribute>
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</taglib>
DBTester.jsp
Stored in:C:\jakarta-tomcat-3.2.3\webapps\exper
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
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</head>
<body>
<%@ taglib uri="/genericdbconnecttags.tld" prefix="database" %>
<database:dbconnect odbcDriver="sun.my.tag.lib" dataSource="hello">
this is the the begining of the end of life as we know it
</database:dbconnect>
</body>
</html>
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Error: 500
Location: /exper/DBtester.jsp
Internal Servlet Error:
org.apache.jasper.compiler.CompileException: C:\jakarta-tomcat-3.2.3\webapps\exper\DBtester.jsp(8,0) Unable to load class null
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     at org.apache.jasper.compiler.JspParseEventListener.addGenerator(JspParseEventListener.java:138)
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     at org.apache.jasper.compiler.Parser$Tag.accept(Parser.java:825)
     at org.apache.jasper.compiler.Parser.parse(Parser.java:1077)
     at org.apache.jasper.compiler.Parser.parse(Parser.java:1042)
     at org.apache.jasper.compiler.Parser.parse(Parser.java:1038)
     at org.apache.jasper.compiler.Compiler.compile(Compiler.java:209)
     at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:612)
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     at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:258)
     at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:268)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
     at org.apache.tomcat.core.Handler.service(Handler.java:287)
     at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
     at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
     at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
     at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
     at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
     at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
     at java.lang.Thread.run(Thread.java:484)
Please if you can help I will be very grateful

I was searching about this problem and I found here.
I'm using WSAD 4.0.3 and I'm making my first custom tag.
Here is my files:
======================= CLASS ======================
package sas.ric.tags.teste;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import java.io.IOException;
public class ClTagHello extends TagSupport {
public int doStartTag() {
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return (SKIP_BODY);
================= TLD ==========================
<?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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</taglib>
======================== JSP =====================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<META name="GENERATOR" content="IBM WebSphere Studio">
<META http-equiv="Content-Style-Type" content="text/css">
</HEAD>
<%@ taglib uri="WEB-INF/app-tlds/tag-hello.tld" prefix="ric" %>
<BODY>
<ric:hello />
</BODY>
</HTML>
==========================================================
Please, help me.
Occur this error "JSPG0058E: Unable to load class null"
Thank's

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package com.db.multi;
import java.io.*;
import com.db.ui.*;
import java.util.*;
* @author DBriscoe
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Dustin
User Queue Empty, Adding User: com.db.multi.User@1a5af9f
User Dustin destroyed. 0
User Dustin destroyed. 0
User Dustin destroyed. 0
User Dustin destroyed. 0
User Dustin destroyed. 0
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INSIDE METHOD: false
AFTER METHOD: false
User Dustin destroyed. 1
User Dustin destroyed. 1
User Dustin destroyed. 1
User Dustin destroyed. 1
USER QUEUE: false
INSIDE METHOD: false
AFTER METHOD: false
User Dustin destroyed. 2
User Dustin destroyed. 2
User Dustin destroyed. 2
User Dustin destroyed. 2
User Dustin destroyed. 2
User Dustin destroyed. 2
User Dustin destroyed. 2
User Dustin destroyed. 2
USER QUEUE: false
INSIDE METHOD: false
AFTER METHOD: false
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
User Dustin destroyed. 3
USER QUEUE: false
INSIDE METHOD: false
AFTER METHOD: false
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
User Dustin destroyed. 4
USER QUEUE: false
INSIDE METHOD: false
AFTER METHOD: false
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
User Dustin destroyed. 5
USER QUEUE: false
INSIDE METHOD: false
AFTER METHOD: false
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
User Dustin destroyed. 6
Joe
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User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
User Dustin destroyed. 7
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INSIDE METHOD: false
INSIDE METHOD: false
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User Joe destroyed. 9
User Dustin destroyed. 9
User Dustin destroyed. 9
User Dustin destroyed. 9
User Dustin destroyed. 9
INSIDE METHOD: true
INSIDE METHOD: false
USER QUEUE: true
INSIDE METHOD: false
INSIDE METHOD: false
INSIDE METHOD: true
INSIDE METHOD: false
USER QUEUE: true
INSIDE METHOD: false
INSIDE METHOD: false
It really does seem to me like finalize is being called multiple times for the same object.
That number should incremement for every instantiated User, and finalize can only be called once for each User object.
I thought this was impossible?
Any help is appreciated!

Thanks...
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Yes, LaunchServices. These are only cache files but can get corrupted. Launch /Utilities/Terminal and copy & paste this at the command line to rebuild LaunchServices: (be sure to copy the entire line it's a scroll)
Code:
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user
Then press return. Wait until terminal returns to the command line. Quit Terminal. After that, log out and back in or restart. Let us know

ME01 LSMW multiple record for same material issue.

Hi Experts,
I have an issue with multiple record for the same material and plant when I upload the data from the file. Lets I have the records.
Material        Plant              Start date      Enddate        Vendor          Porg.
1     0010     20060101     99991231     2     0010
1     0010     20060101     99991231     3     0010
When I upload the above data there are 2 IDOCs created when I am using the method LSMW-IDOC method, but only last record is getting updated and the first one is not getting updated in ME01 souce list. But I am getting the success message for both IDOC in LSMW. So I am not sure how to fix this why only last record is updated and not other records??

why do you have 2 idocs?
wouldn't be 1 idoc with 2 items be more logical?
1 record in structure E1EORDH
and 2 records in structure E1EORDM
I believe your 2 IDOCs get posted, but I think your 2nd Idoc overwrites the values entered from the first IDOC.

Skip lot across multiple batches for same material

Hi,
I am looking for a way to control skip lots across multiple batches for the same material.
We need to do a quality check in production after a certain quantity produced (on a machine, for a material). My idea was to do skip lots (for GR) until we reach a threshold (say 10.000 pcs) and then do an inspection for the next GR for that material.
Any ideas how to set that up?
Thanks for any hint
Andreas

Hi mergler,
Ref to your query pls check this link Stock Posting for Skip Lots
Thanks in advance

Multiple entries for same title in ADE title list

I have 6 entries for the same title in the ADE title list. All have the same date and time added. All but one are blank in the "Last Read" column. On my computer I have only 1 epub file for this title. Why do I have multiple entries for the same title? If I delete all entries except for the one that has a date and time in the Last Read column will that be okay -- will I still be able to access the book?

Hi
This is the normal effect of SAP DBSL SQL code translation.
You can find a lot of post on SCN that will help you to understand this behavior...
Regards
About rsdb/prefer_join and rsdb_prefer_union_all
634263 - Selects with FOR ALL ENTRIES

How to use multiple classes for each form

Hi,
I have created two forms using screen painter and now i want to use different classes for these two forms .
I have declared the Sbo Connection in main class i.e. Set Application ,Connection Context() but while connecting to other classes
for executing the code for that form SAP is not connected to that class.How to use multiple classes functionality i don't able to
do that.Please provide some sample codes for that as it will be more helpful for me to understand.
Thanks & Regards,
Amit

Hi Amit,
In fact, its more advisable to use separate classes for every form that you use. Have one common class, say, for eg., clsMain.cs which has all the connection and connectivity to other classes, wherein, the menu event and item event of this main class, will just be calling the menu / item event of other classes.
The individual functionality of the child classes will be called from the item / menu event of the respective classes.
Item event in clsMain.cs will be as below.
private void oApplication_ItemEvent(string FormUID, ref SAPbouiCOM.ItemEvent pVal, out bool BubbleEvent)
            SAPbouiCOM.Form oForm;
            BubbleEvent = true;
            try
                if ((pVal.FormTypeEx == "My_Form1Type") && (pVal.EventType != SAPbouiCOM.BoEventTypes.et_FORM_UNLOAD))
                    oForm = oApplication.Forms.GetForm("My_FormType", pVal.FormTypeCount);
                    NameSpace.Repots.ClsForm1.ClsForm1_ItemEvent(oApplication, oCompany, oForm, ref pVal, ref BubbleEvent);
                if ((pVal.FormTypeEx == "My_Form2Type") && (pVal.EventType != SAPbouiCOM.BoEventTypes.et_FORM_UNLOAD))
                    oForm = oApplication.Forms.GetForm("My_FormType", pVal.FormTypeCount);
                    NameSpace.Repots.ClsForm1.ClsForm2_ItemEvent(oApplication, oCompany, oForm, ref pVal, ref BubbleEvent);
Now, in the individual classes, you can have their respective item events, which will be called from the main class, and the respective functionalities will occur.
Hope this helps.
Regards,
Satish.

Tag Libraries : multiple classes for same tag

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