Dynamic number of panelBoxes in panelDashboard

Hi,
I got a scenario where I need to display a set of images in a particular order as like a chain.When the chain length is more than 5 it can display them in next rows but only in the chain order, and also the number of images is decided at runtime.
So I thought using of using the panelDashboard with panelBoxes inside it, Which can be arranged at run time using the panelDashboard's columns:5 . But I am not able to use the af:forEach inside the panelDashboard. This stops me from doing dynamic creation of the panelBoxes.
So anyone please provide me a way to do it.... or an better way to meet the requirements

Hi,
Have you tried running the page ignoring the error? Just tried with
                <af:panelDashboard id="pd1">
                <af:forEach begin="1" end="5" step="1" var="v">
                    <af:panelBox text="PanelBox1">
                        <f:facet name="toolbar"/>
                    </af:panelBox>
                    </af:forEach>
                </af:panelDashboard>And able to see 5 panelBoxes inside panelDashboard.
-Arun

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Can I create a dynamic number of inputs during runtime?

Can I create a dynamic number of inputs during runtime?
Oracle 11g
Application Express 4.0.2.00.06
Here is my problem:
We have a table that holds metadata about files (hardcopy or softcopy files).
We expect we may need more columns in the table at some point and don't want to modify the table or the application.
So in order to do this I would like to create:
A table called TBL_FILE with the columns:
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TBL_FILE_NAME          VARCHAR2(1000) (This will be the name of the file)
A second table will be called TBL_FILE_META with the columns:
TBL_META_ID               NUMBER               (This will be the primary key)
TBL_FILE_ID               NUMBER                (This will be the forign key to the file table)
TBL_META_COLUMN     VARCHAR2(30)     (This is what the column name would be if it existed in TBL_FILE)
TBL_META_VALUE          VARCHAR2(1000) (This is the value that record and the 'would be' column)
So a person can have as much meta data on the file with out having to add columns to the table.
The problem is how can I allow users to add as much data as they like with out having to re develop the page.
Other things to note is that we would like this to be on a single page.
I know how to add we can create multi-row inserts by using a SQL Query (updateable report),
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Any idea's how I could accomplish this? Is there a better way of doing this?
Also is there a term or a name for what I am doing by creating these 'virtual' columns in another table?
I found this method when looking at Oracles Workflow tables.

Welcome to the Oracle Forums !
>
Can I create a dynamic number of inputs during runtime?
Oracle 11g
Application Express 4.0.2.00.06
Here is my problem:
We have a table that holds metadata about files (hardcopy or softcopy files).
We expect we may need more columns in the table at some point and don't want to modify the table or the application.
So in order to do this I would like to create:
A table called TBL_FILE with the columns:
TBL_FILE_ID NUMBER (This will be the primary key)
TBL_FILE_NAME VARCHAR2(1000) (This will be the name of the file)
A second table will be called TBL_FILE_META with the columns:
TBL_META_ID NUMBER (This will be the primary key)
TBL_FILE_ID NUMBER (This will be the forign key to the file table)
TBL_META_COLUMN VARCHAR2(30) (This is what the column name would be if it existed in TBL_FILE)
TBL_META_VALUE VARCHAR2(1000) (This is the value that record and the 'would be' column)
So a person can have as much meta data on the file with out having to add columns to the table.
The problem is how can I allow users to add as much data as they like with out having to re develop the page.
>
Creating Page Items dynamically is not available. You will have to create excess items and hide/show , etc. But you cannot change the Item Type. All in all, too many limitations in this approach.
>
Other things to note is that we would like this to be on a single page.
>
The 100 item limit will hit you if you go with extra item on page. With Tabular Form that should not be a limitation, unless you are exceeding the 50 item limit of APEX_APPLICATION.G_Fnn items, and the 60 column limitation of Report region with "Use Generic Column Names (parse query at runtime only)" of Dynamic region.
>
I know how to add we can create multi-row inserts by using a SQL Query (updateable report),
however the TBL_META_VALUE column in the TBL_FILE_META will sometimes be a select list and other times a text box or number field.
>
If the type if item is variable it only means you need a way to store the item type. Meta Data of the Meta Data.
>
So I don't see now a SQL Query (updateable report) would work for this and I can't create an array of page items at run time can I?
>
Yes, you can do it. Updatable report/ Tabular Form query can be constructed from the Meta Data using PL/SQL Function Returning SQL Query . It will be a bit of coding in PL/SQL where you use the Meta Data and the Meta Data of the Meta Data to piece together your SELECT with the right APEX_ITEMs. It might have a performance penalty associated with it, but will not be a serious degradation.
>
Any idea's how I could accomplish this? Is there a better way of doing this?
Also is there a term or a name for what I am doing by creating these 'virtual' columns in another table?
I found this method when looking at Oracles Workflow tables.
>
I guess that is just a good TNF. It is the Master-Detail Design Pattern, that sound more modern ? ;)
Regards,

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The following works on 10R2
create or replace type NColPipe as object
l_parm varchar2(10),   -- The parameter given to the table function
rows_requested number, -- The parameter given to the table function
ret_type anytype,      -- The return type of the table function
rows_returned number, -- The number of rows currently returned by the table function
static function ODCITableDescribe( rtype out anytype, p_parm in varchar2, p_rows_req in number := 2 )
return number,
static function ODCITablePrepare( sctx out NColPipe, ti in sys.ODCITabFuncInfo, p_parm in varchar2, p_rows_req in number := 2 )
return number,
static function ODCITableStart( sctx in out NColPipe, p_parm in varchar2, p_rows_req in number := 2 )
return number,
member function ODCITableFetch( self in out NColPipe, nrows in number, outset out anydataset )
return number,
member function ODCITableClose( self in NColPipe )
return number,
static function show( p_parm in varchar2, p_rows_req in number := 2 )
return anydataset pipelined using NColPipe
create or replace type body NColPipe as
static function ODCITableDescribe( rtype out anytype, p_parm in varchar2, p_rows_req in number := 2 )
return number
is
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begin
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                  , null
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                  , 10
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                  , null
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                  , 10
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exception
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end;
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return number
is
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    len pls_integer;
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    csfrm pls_integer;
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begin
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end;
static function ODCITableStart( sctx in out NColPipe, p_parm in varchar2, p_rows_req in number := 2 )
return number
is
begin
    return odciconst.success;
end;
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return number
is
begin
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      else
        outset.setvarchar2( 'row: ' || to_char( i ) );
        outset.setvarchar2( 'row: ' || to_char( i ) );
        outset.setnumber( i );
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      self.rows_returned := self.rows_returned + 1;
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    outset.endcreate;
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end;
member function ODCITableClose( self in NColPipe )
return number
is
begin
    return odciconst.success;
end;
end;
/And to use it
SQL> select * from table( NColPipe.show( 'test', 3 ) );
test1      test2           test3
row: 1     row: 1              1
row: 2     row: 2              2
row: 3     row: 3              3
SQL> select * from table( NColPipe.show( 'two', 5 ) );
one        two
1          row: 1
2          row: 2
3          row: 3
4          row: 4
5          row: 5
SQL> select * from table( NColPipe.show( 'one' ) );
one
1
2
SQL> Anton

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TABLES
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EXCEPTIONS
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ASSIGN <fs_1> TO <fs_2>.
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regards,
amit m.

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