Casting in forEach ?

Hi guys,
I have a UsersCatalog bean being set in a servlet, and this catalog contains lots of User objects.
Servlet:
Collection userslist = new ArrayList();
User user1 = new User("John");
User user2 = new User("Peter");
userslist.add(user1);
userslist.add(user2);
UsersCatalog catalog = new UsersCatalog();
catalog.usersitems = userslist;
request.setAttribute("mycatalog",catalog)
in the jsp I've got a bean called "catalog" like this:
<jsp:usebean id="catalog" class="beans.UsersCatalog" scope="request">
now I want to iterate those "users" (up there):
(here the problem)
<c:forEach var="user" items="${catalog.usersitems}">
${user.firstname}
</c:forEach>
I don't know how I can iterate those users. Given that the usersitems is a collection (which is ok for iteration purposes), how can I have acess to the User object and thus access its variables?
I've tried various different ways of iterate them but can't see the result on the screen, but surprinsingly, when I use scriptlets and a java Iterator they show up (!?)
Should I create one bean for each of those catalog users? if I have 100 users, would I have 100 beans ?
I'm stuck on this for 2 days and since i have no internet at home (just moved in), I'm going crazy....
I would really appreciate if someone could give me a hand with this...
Thanks in advance guys
catalog.add(
Message was edited by:
bbrendler

Hi bckrispi, thanks for the reply.
I'm gonna try this when I get home today and since I have no internet there I let you know tomorrow about the result of that.
Thanks a lot.
Bruno
Message was edited by:
bbrendler

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c:forEach tag

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But it is a Exchange Management Shell script an we would like to execute it like a .php file.
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I would like to thank you in advance.
Kind regards,
Jordi Martin Lago

That's not a Exchange Management Shell script its just a normal powershell script that uses the EWS Managed API
http://msdn.microsoft.com/en-us/library/dd633710(v=exchg.80).aspx . So you can run it from any workstation or server where you have powershell and the Managed API library installed.
You will need to update the line
Add-Type -Path
"C:\Program Files\Microsoft\Exchange\Web Services\1.2\Microsoft.Exchange.WebServices.dll"
To
Add-Type -Path
"C:\Program Files\Microsoft\Exchange\Web Services\2.0\Microsoft.Exchange.WebServices.dll"
   To cater for the latest version of the Managed API.
  You can scheduled powershell scripts to run using the Task Scheduler eg
http://community.spiceworks.com/how_to/show/17736-run-powershell-scripts-from-task-scheduler
Cheers
Glen

Cannot cast from SOMETHING to SOMETHING (Error in 1.4) (Works in 1.6)

Our company have developed an accounting program, and it is already near completion.
We developed it with JavaBean and Eclipse in Windows Environment with JRE 1.6.0_05
When we tried to compile and run the program in our linux environment (Server) that runs on 1.4 , the casting error occured..
we have written a program to generate all casting errors that occurred in our project.
import java.math.*;
import java.util.*;
public class testnow {
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}the following is what happened when i run javac testnow.java
1. ERROR in testnow.java
(at line 6)
Integer TestINT = 150;
^^^^^^^
Type mismatch: cannot convert from int to Integer
2. ERROR in testnow.java
(at line 7)
Boolean TestBOOL = (Boolean)true;
^^^^^^^^^^^^^
Cannot cast from boolean to Boolean
3. ERROR in testnow.java
(at line 11)
Object TestINTObj = (Object)150;
^^^^^^^^^^^
Cannot cast from int to Object
4. ERROR in testnow.java
(at line 14)
Object TestBOOLObj = true;
^^^^^^^^^^^
Type mismatch: cannot convert from boolean to Object
4 problems (4 errors)
in our windows development JRE 1.6 , it run well and gives the following output :
TEST Integer PASSED
TEST String PASSED
TEST Decimal PASSED
TEST Boolean PASSED
TEST Date PASSED
how do we solve this? i mean we have been using this "convenience" casting all over our code . :(
please help
thanks a lot.
Cheers and God Bless,
Chowi

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Also, if you don't have a good reason to make that first argument an ArrayList, you should declare it as a List instead. That leaves the calling code the option of using a different List implementation should they need to.
Next, you assign a primitive value to an Object reference: Object ReturnedObject = 0; That requires autoboxing, as others have pointed out, which didn't exist in JDK 1.4. Even if you could use autoboxing though, that assignment would be a bad idea; a variable of type Object should be assigned a default value of {color:000080}null{color}, not a number. However, you may not need to declare that variable at all, as I explain later.
Next you use a "foreach" loop, another feature that was added in JDK 1.5; you'll have to switch to the old-style loop if you want this code to work under JDK 1.4. While you're at it, you should declare your "SingleRow" variable inside the loop, since it's not used anywhere else: for (Iterator it = TargetTable.iterator(); it.hasNext(); ) {
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Specified cast is not valid

Hello, I have the following code:
if (dataTable.Columns.Count > 1)
strXML = ChartFileNameandPath(chartType) + @"?dataXML=<graph caption='Report ; Summary' subcaption='" + ReportName(reportType) + "' xAxisName='Line Number' yAxisName='Pounds made' rotatelabels='1' slantlabels='1' showNames='1' showvalues='0' numberPrefix='$' exportenabled='1' exportAtClient='1' exportHandler='fcExporter1' exportFormats='PNG=Save as PNG' >";
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foreach (var grp in query) {
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I get a error "Specified cast is not valid"
Part of my store procedure where I'm grabbing it from is:
SELECT ClientName,
Mem_Name,
Mem_Address,
Mem_city,
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(Sum(mv.AmountSpent)/ (CAST(s.TotalBusinessSales as decimal)) * 100) as PercentAmountSpent
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Thanks,
N

ALTER PROCEDURE usp_Clienttransaction (@FromDate Varchar (30), @ToDate Varchar (30), @Active int)
AS
SELECT ClientName,
Mem_Name,
Mem_Address,
Mem_city,
Mem_state,
Sum(mv.AmountSpent) as TotalAmountSpent,
(Sum(mv.AmountSpent)/ (CAST(s.TotalBusinessSales as decimal)) * 100) as PercentAmountSpent
FROM UnitedDiningClub.dbo.UDC_Member
JOIN UnitedDiningClub.dbo.UDC_MemberVisits mv
ON UDC_Member.Mem_ID = mv.MemberId
JOIN UnitedDiningClub.dbo.UDClub_Client c
ON c.ClientId = mv.RestaurantId
INNER JOIN
( SELECT RestaurantId, sum(AmountSpent) as TotalBusinessSales
FROM UnitedDiningClub.dbo.UDC_MemberVisits
GROUP BY RestaurantId) s
ON s.RestaurantId = c.ClientId
GROUP by ClientName, Mem_Name, Mem_Address , Mem_city , Mem_state, s.TotalBusinessSales
ORDER BY ClientName
Thats the full procedure.
Its coming from a sub query. Would an alias effect the results in c#?

Casting DataTable to Control

I'd like to write a general method to dispose of SQL objects using a passed Form object. I'm running Visual Studio Express 2013 for Windows Desktop. The cast is the problem; see the lines with '**'. What type of cast should I use? Thanks!
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if (control.GetType() == typeof(DataAdapter))
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I don't know what you are trying to do here.You can't make any cast on anything here in what you are trying to do.
https://msdn.microsoft.com/en-us/library/system.data.common.dataadapter%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396
https://msdn.microsoft.com/en-us/library/system.data.datatable%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396
https://msdn.microsoft.com/en-us/library/system.windows.forms.control(v=vs.110).aspx
Java and .NET have the same principles when it come to OO.
https://alfredjava.wordpress.com/2008/07/08/class-vs-object-vs-instance/
A class defines an object
A class can be instanciated into a object instance.
**DataTabletable
= (DataAdapter)control;
That statement is saying car I am telling you that you are going to be a house. And once you are a house, I am going to make you a rocket. It's never going to happen. .NET is going to start looking at the defining classe for the objects and say car you can't
be cast to be a house, and house you can't be cast to be a rocket.
It's car cast to a car. It's house cast to a house. It's rocket cast to a rocket.
Lets say Textbox1 is cast to Object. That can happen becuase System.Object is the base object for everything in .NET. So you pass Object around in code. Object is really a Textbox object. So you get to a point in code where Object needs to be a Textbox object
again.
Textbox thetextbox = (TextBox)Object. That's valid and I hope you understand way it is valid.

Error in cast a variable

these are few lines from my long STORED PROCEDURE actually i am new to oracle 11g please
declare
v_s nvarchar2(10);
p_RN nvarchar2(10);
begin
v_s := v_s || cast(p_RN as nvarchar2(10)); - ERROR IS COMING IN THIS LINE
end;
error
ORA-06550: line 5, column 39:
PLS-00103: Encountered the symbol "(" when expecting one of the following:
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action:
please somebody help me

Just a little explanation about the error message.
ORA-06550: line 5, column 39:
PLS-00103: Encountered the symbol "(" when expecting one of the following:
Line 5 column 39 is the starting parenthesis of the "(10)". For using cast you can't add a lenght to the datatype.
If you change that, then you get a different error message:
declare
v_s nvarchar2(10);
p_RN varchar2(10);
begin
v_s := v_s || cast(p_RN as nvarchar2); -- ERROR IS COMING IN THIS LINE
end;
Fehler beim Start in Zeile 13 in Befehl:
declare
v_s nvarchar2(10);
p_RN varchar2(10);
begin
v_s := v_s || cast(p_RN as nvarchar2); -- ERROR IS COMING IN THIS LINE
end;
Fehlerbericht:
ORA-06550: line 5, column 22:
PLS-00382: expression is of wrong type
ORA-06550: line 5, column 3:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action:ORA-06550: line 5, column 22:
PLS-00382: expression is of wrong type
This shows that you can't convert/cast a nvarchzar type into another nvarchar type.
It would work if you cast a number into a varchar2 type for example
declare
v_s nvarchar2(10);
p_RN number(10);
begin
v_s := v_s || cast(p_RN as nvarchar2); -- ERROR IS COMING IN THIS LINE
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anonymer Block abgeschlossen.

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I know I've REALLY struggled with this before. I just don't understand why this has to be soooooo difficult.
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Put the Data Flow Task within the Foreach Loop Container
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I change the Excel Connection and its Expression to be ExcelFilePath ==> @[User::FilePath]
I then try and change the Excel Source and its Data Access Mode to Table Name or view name variable and provide the Variable Name User::FilePath
And that's when I run into trouble...
Exception from HRESULT: 0xC02020E8
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I don't understand by adding a Foreach Loop Container to try and make this as efficient as possible has caused such an error unless I'm overlooking something. I have even tried delaying my validations and that doesn't seem to help.
I have looked hard in Google and even YouTube to try and find a solution for this but for the life of me I cannot seem to find anything on pumping a .xlsX file into SQL Server using a Foreach Loop Container.
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Thanks for your review and am hoping and praying for a reply and solution.

Hi ITBobbyP,
If I understand correctly, you want to load data from multiple sheets in an .xlsx file into a SQL Server table.
If in this scenario, please refer to the following tips:
The Foreach Loop container should be configured as shown below:
Enumerator: Foreach ADO.NET Schema Rowset Enumerator
Connection String: The OLE DB Connection String for the excel file.
Schema: Tables.
In the Variable Mapping, map the variable to Sheet_Name, and change the Index from 0 to 2.
The connection string for Excel Connection Manager is the original one, we needn’t make any change.
Change Table Name or View name to the variable Sheet_Name.
If you want to load data from multiple sheets in multiple .xlsx files into a SQL Server table, please refer to following thread:
http://stackoverflow.com/questions/7411741/how-to-loop-through-excel-files-and-load-them-into-a-database-using-ssis-package
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

Error in cast multiset in collections

DECLARE
TYPE emp_dept_rec IS RECORD (
v_sal emp.sal%TYPE,
v_name emp.ename%TYPE,
v_deptname dept.DEPTNAME%type
TYPE emp_dept_tab_type IS TABLE OF emp_dept_rec;
l_emp_dept_tab emp_dept_tab_type;
type emp_tab is table of emp%rowtype;
type l_emp_tab is table of emp%rowtype;
type dept_tab is table of dept%rowtype;
type l_dept_tab is table of dept%rowtype;
cursor e1 is
select * from emp;
cursor d1 is select * from dept;
begin
OPEN e1;
FETCH e1
BULK COLLECT INTO l_emp_tab;
open d1;
FETCH d1
BULK COLLECT INTO l_dept_tab;
select cast(multiset (select em.sal,em,ename ,dep.DEPTNAME
from table(l_emp_tab) em,table(l_dept_tab) dep
where em.deptno=dep.deptno)
as emp_dept_tab_type)
into l_emp_dept_tab ;
end;
it is giving error as
ORA-06550: line 43, column 25:
PL/SQL: ORA-00923: FROM keyword not found where expected
ORA-06550: line 39, column 5:
PL/SQL: SQL Statement ignored

Here is an example.
SQL> CREATE OR REPLACE TYPE emp_rec IS OBJECT (
2                      v_sal    NUMBER(7,2),
3                      v_name   VARCHAR2(35),
4                      v_empno NUMBER(4),
5                      v_deptno NUMBER(2)
6                      )
7 ;
8 /
Type created.
SQL> CREATE OR REPLACE TYPE emp_tab IS TABLE OF emp_rec;
2 /
Type created.
SQL> CREATE OR REPLACE TYPE dept_rec IS OBJECT (
2                      v_deptno NUMBER,
3                      v_dname VARCHAR2(50)
4                      )
5 ;
6 /
Type created.
SQL> CREATE OR REPLACE TYPE dept_tab IS TABLE OF dept_rec;
2 /
Type created.
SQL> CREATE OR REPLACE TYPE emp_dept_rec IS
2                     OBJECT (
3                      v_sal     NUMBER,
4                      v_name     VARCHAR2(35),
5                      v_deptname VARCHAR2(30)
6                      );
7 /
Type created.
SQL> CREATE OR REPLACE TYPE emp_dept_tab_type IS TABLE OF emp_dept_rec;
2 /
Type created.
SQL> set serverout on
SQL> DECLARE
2    l_emp_dept_tab emp_dept_tab_type; --emp_dept_tab_type declared in database
3    l_emp_tab      emp_tab; --emp_tab declared in database
4    l_dept_tab     dept_tab; --dept_tab declared in database
5
6    CURSOR e1 IS
7      SELECT emp_rec(sal, ename, empno, deptno) FROM emp; --Note the type casting here
8
9    CURSOR d1 IS
10      SELECT dept_rec(deptno, dname) FROM dept; --Note the type casting here
11 BEGIN
12    OPEN e1;
13
14    FETCH e1 BULK COLLECT
15      INTO l_emp_tab;
16
17    OPEN d1;
18
19    FETCH d1 BULK COLLECT
20      INTO l_dept_tab;
21
22    SELECT CAST(MULTISET (SELECT em.v_sal, em.v_name, dep.v_dname
23                   FROM TABLE(l_emp_tab) em, TABLE(l_dept_tab) dep
24                  WHERE em.v_deptno = dep.v_deptno) AS emp_dept_tab_type)
25      INTO l_emp_dept_tab
26      FROM DUAL;
27    FOR i IN 1 .. l_emp_dept_tab.COUNT LOOP
28      dbms_output.put_line(l_emp_dept_tab(i)
29                           .v_sal || '--' || l_emp_dept_tab(i)
30                           .v_name || '--' || l_emp_dept_tab(i).v_deptname);
31    END LOOP;
32
33 END;
34 /
1300--MILLER--ACCOUNTING
5000--KING--ACCOUNTING
2450--CLARK--ACCOUNTING
3000--FORD--RESEARCH
1100--ADAMS--RESEARCH
3000--SCOTT--RESEARCH
2975--JONES--RESEARCH
800--SMITH--RESEARCH
950--JAMES--SALES
1500--TURNER--SALES
2850--BLAKE--SALES
1250--MARTIN--SALES
1250--WARD--SALES
1600--ALLEN--SALES
PL/SQL procedure successfully completed.It is just for educational purpose, because the thing you have achieved by so much programming can be done easily by simple join in the table itself.
user10447332 Newbie
Handle: user10447332
Status Level: Newbie
Registered: Oct 20, 2008
Total Posts: 227
Total Questions: 153 (152 unresolved) >
What a record! and most of the time you don't care to follow/revisit the thread also!.

Error in cast to MULTIPART

Hi, I test the follow Jguru tutorial code for getting atacchements
Multipart multipart = (Multipart)message.getContent();
for (int i=0, n=multipart.getCount(); i<n; i++) {
Part part = multipart.getBodyPart(i));
String disposition = part.getDisposition();
if ((disposition != null) &&
((disposition.equals(Part.ATTACHMENT) ||
(disposition.equals(Part.INLINE))) {
saveFile(part.getFileName(), part.getInputStream());
But i have a problem of cast in this line
Multipart mp = (Multipart)message.getContent();
the error of CastClass is:
java.lang.String cannot be cast to javax.mail.Multipart
why????? Please help me
Thanks

Most likely you don't have a multipart message. See the msgshow.java
demo program that comes with JavaMail.

Could not type cast in java embedding

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
org.xml.sax.InputSource in = (org.xml.sax.InputSource) getVariableData("Invoke_1_getRoutingAndFrameJumpers_OutputVariable","getRoutingAndFrameJumpersResponse");
Document doc = db.parse(in);
In the above code I am trying to type cast the variable getRoutingAndFrameJumpersResponse into org.xml.sax.InputSource so that i can parse.
I am not getting any error during compilation
but I am unable to type cast some run time error is coming in the line were I am type casting but I am not able to see the runtime error.
How can I see the runtime error in java embedding, how to type cast a variable into xml so that I can parse it.

Hi Arun,
Could you try using the bpelx:rename extension in an assign activity enables a BPEL process to rename an element through use of XSD type casting.
<bpel:assign>
<bpelx:rename elementTo="QName1"? typeCastTo="QName2"?>
<bpelx:target variable="ncname" part="ncname"? query="xpath_str" />
</bpelx:rename>
</bpel:assign>
Cheers
A

Derive found flag in SQL with where clause using TABLE(CAST function

Dear All,
Stored procedure listEmployees
==========================
CREATE OR REPLACE TYPE STRING_ARRAY AS VARRAY(8000) OF VARCHAR2(15);
empIdList STRING_ARRAY
countriesList STRING_ARRAY
SELECT EMP_ID, EMP_COUNTRY, EMP_NAME, FOUND_FLAG_
FROM EMPLOYEE WHERE
EMP_ID IN
(SELECT * FROM TABLE(CAST(empIdList AS STRING_ARRAY))
AND EMP_COUNTRY IN
(SELECT * FROM TABLE(CAST(countriesList AS STRING_ARRAY))
=================
I have a stored procedure which lists the employees using above simple query.
Here I am using table CAST function to find the list of employees in one go
instead of looping through each and every employee
Everything fine until requirements forced me to get the FOUND_FLAG as well.
Now I wanted derive the FOUND_FLAG by using rownum, rowid, decode functions
but I was not successful
Can you please suggest if there is any intelligent way to say weather the
row is found for given parameters in the where clause?
If not I may have to loop through each set of empIdList, countriesList
and find the values individually just to set a flag. In this approach I can’t use
the TABLE CAST function which is efficient I suppose.
Note that query STRING_ARRAY is an VARRAY. It is very big in size and this procedure
suppose to handle large sets of data.
Thanks In advance
Regards
Charan
Edited by: kmcharan on 03-Dec-2009 09:55
Edited by: kmcharan on 03-Dec-2009 09:55

If your query returns results, you have found them... so your "FOUND" flag might be a constant,...

Casting in ABAP Objects

Why the cast error generates only in Widening cast?

Hi Shyam,
WELCOME TO SDN!!!
Please check this link
http://abapprogramming.blogspot.com/2007/10/oops-abap-8.html
The widening cast in this case does not cause an error because the reference airplane actually points to an instance in the subclass lcl_cargo_airplane. The dynamic type is therefore u2018REF TO lcl_cargo_airplaneu2019.
Here the widening cast produces the MOVE_CAST_ERROR runtime error that can be caught with u201CCATCH ... ENDCATCHu201D, because the airplane reference does not point to an instance in the subclass lcl_cargo_airplane, but to a u201Cgeneral airplane objectu201D. Its dynamic type is therefore u2018REF TO lcl_airplaneu2019 and does not correspond to the reference type cargo_airplane.
The widening cast logically represents the opposite of the narrowing cast. The widening cast cannot be checked statically, only at runtime. The Cast Operator u201C?=u201D (or the equivalent u201CMOVE ... ?TO u2026u201D) must be used to make this visible.
With this kind of cast, a check is carried out at runtime to ensure that the current content of the source variable corresponds to the type requirements of the target variables. In this case therefore, it checks that the dynamic type of the source reference airplane is compatible with the static type of the target reference cargo_airplane. If it is, the assignment is carried out. Otherwise the catchable runtime error u201CMOVE_CAST_ERRORu201D occurs, and the original value of the target variable remains the same.
Best regards,
raam

Can not cast from object to int

Hi All,
I have the following bunch of code
Session session;
          session = getSessionFactory().openSession();
          Query query;
          int MaxPageId = 0;
          List list;
          try{
               query = session.createQuery("select max(emp.id) from EmpBean emp");
               list = query.list();
               MaxPageId = (int) list.get(0);
               return MaxPageId;
          catch(Exception e){
               System.out.println(e.getMessage());
          return MaxPageId;
The query executed successfully but when i get the max id in a integer variable by the following statement
MaxPageId = (int) list.get(0);
I get the following error "can not cast from object to int"
Please suggest for the same.
-Thanks

Cast to an Integer, not an int, and let autoboxing turn the Integer into an int.
int maxPageId;
maxPageId = (Integer) list.get(0);You can't cast objects into primitives.
Autoboxing isn't casting.
And use Java naming conventions. Local variables start with a lower-case letter.

How to cast a column of a derived column in a view to NULL

I have a derived column in my view and this column by default is picked up as not null.
I want to cast it to null how can i do it ?
Actual column
column1 varchar(3) not null
Expected column
column1 varchar(3) null
Mudassar

Shridar I havent defined it but the derived column has been picked up as not null which is strange
CREATE VIEW test
AS
SELECT
CASE
WHEN COMPANY_SIZE IS NULL then 'a'
ELSE 'b'
END AS
column1 ----- added derived column identifier
,[Company_Size] AS [CompanySize]
FROM xyz
Mudassar

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