Processing Dynamic Variable in JSTL

I have problem getting the result of a JSTL variable dynamically. Here is the scenario.
I have defined messages for some status values as follows in the page.
<c:set var="messagestatus1a" value="Less than 30 days with ME" /> <c:set var="messagestatus1b" value="30 days or more with ME" /> <c:set var="messagestatus2a" value="Less than 30 days with JPM"/> <c:set var="messagestatus2b" value="30 days or more with JPM" />
I get a status value from the database (such as status1a, status1b, status2a, status2b) and I am concatenating with 'message' so that I can frame the appropriate variable name.
<c:forEach var="suggestionsLoop" items="${suggestionQuery.rows}">
<c:set var="msgDesc" value="message${suggestionsLoop.status}" />

</c:forEach>
Thanks,
vmrao

In this case you can use the squarebracket notation combined with the implicit map to all EL variables in scope.
<c:out value="${pageScope[msgDesc]}"/>Cheers,
evnafets

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Open your bpel and look for and icon that looks like this... (x)
http://docs.oracle.com/cd/E23943_01/dev.1111/e10224/bp_gsbpel.htm#CIADACJJ

How to generate report with dynamic variable number of columns?

How to generate report with dynamic variable number of columns?
I need to generate a report with varying column names (state names) as follows:
SELECT AK, AL, AR,... FROM States ;
I get these column names from the result of another query.
In order to clarify my question, Please consider following table:
CREATE TABLE TIME_PERIODS (
PERIOD     VARCHAR2 (50) PRIMARY KEY
CREATE TABLE STATE_INCOME (
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     PERIOD     VARCHAR2 (50)     REFERENCES TIME_PERIODS (PERIOD) ,
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I like to generate a report as follows:
AK CA DE FL ...
PERIOD1 1222.23 2423.20 232.33 345.21
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PERIOD3
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The TIME_PERIODS.Period and State.Name could change dynamically.
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SQL> -- test tables and test data:
SQL> CREATE TABLE states
2    (state VARCHAR2 (2))
3 /
Table created.
SQL> INSERT INTO states
2 VALUES ('AK')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('AL')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('AR')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('CA')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('DE')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('FL')
3 /
1 row created.
SQL> CREATE TABLE TIME_PERIODS
2    (PERIOD VARCHAR2 (50) PRIMARY KEY)
3 /
Table created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD1')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD2')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD3')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD4')
3 /
1 row created.
SQL> CREATE TABLE STATE_INCOME
2    (NAME   VARCHAR2 (2),
3      PERIOD VARCHAR2 (50) REFERENCES TIME_PERIODS (PERIOD),
4      INCOME NUMBER (12, 2))
5 /
Table created.
SQL> INSERT INTO state_income
2 VALUES ('AK', 'PERIOD1', 1222.23)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('CA', 'PERIOD1', 2423.20)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('DE', 'PERIOD1', 232.33)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('FL', 'PERIOD1', 345.21)
3 /
1 row created.
SQL> -- the basic query:
SQL> SELECT   SUBSTR (time_periods.period, 1, 10) period,
2            SUM (DECODE (name, 'AK', income)) "AK",
3            SUM (DECODE (name, 'CA', income)) "CA",
4            SUM (DECODE (name, 'DE', income)) "DE",
5            SUM (DECODE (name, 'FL', income)) "FL"
6 FROM     state_income, time_periods
7 WHERE    time_periods.period = state_income.period (+)
8 AND      time_periods.period IN ('PERIOD1','PERIOD2','PERIOD3')
9 GROUP BY ROLLUP (time_periods.period)
10 /
PERIOD             AK         CA         DE         FL
PERIOD1       1222.23     2423.2     232.33     345.21
PERIOD2
PERIOD3
              1222.23     2423.2     232.33     345.21
SQL> -- package that dynamically executes the query
SQL> -- given variable numbers and values
SQL> -- of states and periods:
SQL> CREATE OR REPLACE PACKAGE package_name
2 AS
3    TYPE cursor_type IS REF CURSOR;
4    PROCEDURE procedure_name
5       (p_periods   IN     VARCHAR2,
6        p_states    IN     VARCHAR2,
7        cursor_name IN OUT cursor_type);
8 END package_name;
9 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY package_name
2 AS
3    PROCEDURE procedure_name
4       (p_periods   IN     VARCHAR2,
5        p_states    IN     VARCHAR2,
6        cursor_name IN OUT cursor_type)
7    IS
8       v_periods          VARCHAR2 (1000);
9       v_sql               VARCHAR2 (4000);
10       v_states          VARCHAR2 (1000) := p_states;
11    BEGIN
12       v_periods := REPLACE (p_periods, ',', ''',''');
13       v_sql := 'SELECT SUBSTR(time_periods.period,1,10) period';
14       WHILE LENGTH (v_states) > 1
15       LOOP
16         v_sql := v_sql
17         || ',SUM(DECODE(name,'''
18         || SUBSTR (v_states,1,2) || ''',income)) "' || SUBSTR (v_states,1,2)
19         || '"';
20         v_states := LTRIM (SUBSTR (v_states, 3), ',');
21       END LOOP;
22       v_sql := v_sql
23       || 'FROM     state_income, time_periods
24           WHERE    time_periods.period = state_income.period (+)
25           AND      time_periods.period IN (''' || v_periods || ''')
26           GROUP BY ROLLUP (time_periods.period)';
27       OPEN cursor_name FOR v_sql;
28    END procedure_name;
29 END package_name;
30 /
Package body created.
SQL> -- sample executions from SQL:
SQL> VARIABLE g_ref REFCURSOR
SQL> EXEC package_name.procedure_name ('PERIOD1,PERIOD2,PERIOD3','AK,CA,DE,FL', :g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         CA         DE         FL
PERIOD1       1222.23     2423.2     232.33     345.21
PERIOD2
PERIOD3
              1222.23     2423.2     232.33     345.21
SQL> EXEC package_name.procedure_name ('PERIOD1,PERIOD2','AK,AL,AR', :g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         AL         AR
PERIOD1       1222.23
PERIOD2
              1222.23
SQL> -- sample execution from PL/SQL block
SQL> -- using parameters derived from processing
SQL> -- cursors containing results of other queries:
SQL> DECLARE
2    CURSOR c_period
3    IS
4    SELECT period
5    FROM   time_periods;
6    v_periods   VARCHAR2 (1000);
7    v_delimiter VARCHAR2 (1) := NULL;
8    CURSOR c_states
9    IS
10    SELECT state
11    FROM   states;
12    v_states    VARCHAR2 (1000);
13 BEGIN
14    FOR r_period IN c_period
15    LOOP
16       v_periods := v_periods || v_delimiter || r_period.period;
17       v_delimiter := ',';
18    END LOOP;
19    v_delimiter := NULL;
20    FOR r_states IN c_states
21    LOOP
22       v_states := v_states || v_delimiter || r_states.state;
23       v_delimiter := ',';
24    END LOOP;
25    package_name.procedure_name (v_periods, v_states, :g_ref);
26 END;
27 /
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         AL         AR         CA         DE         FL
PERIOD1       1222.23                           2423.2     232.33     345.21
PERIOD2
PERIOD3
PERIOD4
              1222.23                           2423.2     232.33     345.21

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Murray --- ICQ 71997575
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Edited by: user5893566 on Nov 29, 2008 6:24 AM

Ok, I tested it using the latest enterprise edition (11g) and there it works as expected.
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Message was edited by: scottmorgan

Scott,
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Hello,
I am trying to sort my query based on a dynamic variable p_sorton in the cursor as follows:
function getMarketView2(
p_event_id in ex_event.event_id%type,
p_fromrow in integer,
p_torow in integer,
p_appTZ in char,
p_calcTZ in char,
p_sorton in varchar2) return varchar2 as
type t_ticket_trade is ref cursor return ex_ticket_trade%rowtype;
v_return varchar2(32767);
v_return_integer integer;
v_String varchar2(32767);
v_ex_ticket_trade_obj ex_ticket_trade_obj;
v_rowcount integer:=0;
v_rowtotal integer:=0;
v_done boolean:=false;
v_sysdate date:=NEW_TIME(SYSDATE,trim(p_appTZ),trim(p_calcTZ));
cursor cur_ticket_trade_event_open (p_event_id in ex_event.event_id%type, v_sysdate in date) is
select "TICKET_TRADE_ID","SELLER_ACCESS_ID","CREATE_DATETIME","MODIFY_DATETIME","LASTMODIFY_BY",
"BUYER_ACCESS_ID","OPEN_TRADE_DATE","CLOSE_TRADE_DATE","TICKET_SUITE_CODE","TICKET_DATETIME",
"TICKET_TIMEZONE","TICKET_EVENT_ID","TICKET_TYPE","TICKET_SEAT_TYPE","TICKET_OPPONENT",
"TICKET_TOTAL_SEAT","TICKET_PRICE","TICKET_PRICE_EXT","START_BID_DATE","OPEN_BID_PRICE",
"CURRENT_BID_COUNT","CURRENT_HIGH_BID","CURRENT_LAST_BID_DATETIME","CURRENT_BID_INCREMENT_BY","TICKET_TRANSACTION_DATE",
"TICKET_TRADE_STATUS" from ex_ticket_trade
where ex_ticket_trade.TICKET_EVENT_ID = p_event_id
and (ex_ticket_trade.ticket_datetime > v_sysdate)
and (ex_ticket_trade.ticket_trade_status in ('F','A','AB'))
and (ex_ticket_trade.ticket_suite_code='N' OR ex_ticket_trade.ticket_suite_code='Y')
order by p_sorton desc;
--ex_ticket_trade.ticket_datetime desc;
........then comes the rest of the code........
This code compiles fine but does not use the value passed in the param p_sorton in the order by clause.
the same code works fine when hardcoded to "ex_ticket_trade.ticket_datetime"
No idea where I may be going wrong?
Also can I do anything like ORDER BY v1 v2
where v1 specifies columns to sort on and v2 asc/desc, coz that's what I really need to do?
Pls help ...
Thanks,
Karuna

Hi,
Thanks for the reply ... I tried the same but due to my basic knowledge of pl-sql, I'm running into some other problem.
================================================
CREATE OR REPLACE FUNCTION testMarketView(p_event_id in ex_event.event_id%type,
p_fromrow in integer,p_torow in integer,
p_appTZ in char, p_calcTZ in char, p_sorton in varchar2
               ) return varchar2 as
type t_ticket_trade is ref cursor return ex_ticket_trade%rowtype;
     v_return varchar2(32767);
     v_return_integer integer;
     v_String varchar2(32767);
     v_ex_ticket_trade_obj ex_ticket_trade_obj;
     v_rowcount integer:=0;
     v_rowtotal integer:=0;
     v_done boolean:=false;
     v_sysdate date:=NEW_TIME(SYSDATE,trim(p_appTZ),trim(p_calcTZ));
     TYPE t_ticket_trade_event IS REF CURSOR;
     cur_ticket_trade_event t_ticket_trade_event;
     v_dynQuery VARCHAR2(1000);
     cursor cur_event_seat_section_row (p_ticket_trade in ex_event_seat_inv.ticket_trade_id%type) is
     select distinct event_seat_section, event_seat_row
     from ex_event_seat_inv
     where ticket_trade_id = p_ticket_trade;
     type t_event_seat_section_row is ref cursor return cur_event_seat_section_row%rowtype;
/*v_section varchar2(32767);
     v_section_row varchar2(32767);
     the 26 variables that belong to table ex_ticket_trade-----------
     v_ticket_transaction_date date;
     v_ticket_trade_status varchar2(10);*/
begin
v_dynQuery := 'select
"TICKET_TRADE_ID","SELLER_ACCESS_ID","CREATE_DATETIME","MODIFY_DATETIME","LASTMODIFY_BY",
"BUYER_ACCESS_ID","OPEN_TRADE_DATE","CLOSE_TRADE_DATE","TICKET_SUITE_CODE","TICKET_DATETIME",
"TICKET_TIMEZONE","TICKET_EVENT_ID","TICKET_TYPE","TICKET_SEAT_TYPE","TICKET_OPPONENT",
"TICKET_TOTAL_SEAT","TICKET_PRICE","TICKET_PRICE_EXT","START_BID_DATE",
"OPEN_BID_PRICE","CURRENT_BID_COUNT","CURRENT_HIGH_BID",
"CURRENT_LAST_BID_DATETIME","CURRENT_BID_INCREMENT_BY",
"TICKET_TRANSACTION_DATE","TICKET_TRADE_STATUS"
from ex_ticket_trade where
ex_ticket_trade.TICKET_EVENT_ID = ' || p_event_id || ' and (ex_ticket_trade.ticket_datetime > '|| v_sysdate||')
and (ex_ticket_trade.ticket_trade_status in ('||'''F'''||','||'''A'''||','||'''AB'''||'))
and (ex_ticket_trade.ticket_suite_code='||'''N'''||' OR ex_ticket_trade.ticket_suite_code='||'''Y'''||')
order by '|| p_sorton ||'desc ' ;
select count(*) into v_rowtotal
from ex_ticket_trade
where
ex_ticket_trade.TICKET_EVENT_ID = p_event_id
and (ex_ticket_trade.ticket_datetime > v_sysdate)
and (ex_ticket_trade.ticket_trade_status in ('F','A','AB'))
and (ex_ticket_trade.ticket_suite_code='N' OR ex_ticket_trade.ticket_suite_code='Y')
order by ex_ticket_trade.ticket_datetime asc;
v_ex_ticket_trade_obj:=ex_ticket_trade_tabobj.initialize;
v_rowcount:=1;
OPEN cur_ticket_trade_event FOR v_dynQuery;
     LOOP
     FETCH cur_ticket_trade_event INTO t_ticket_trade;
/*     -- THIS IS WHAT I HAVE TO DEAL WITH IF I CAN"T
     --PUT THE RESULTS OF THE CURSOR in t_ticket_trade
     v_ticket_trade_id , v_seller_access_id , v_create_datetime, v_modify_datetime , v_lastmodify_by ,
     v_buyer_access_id, v_open_trade_date, v_close_trade_date, v_ticket_suite_code, v_ticket_datetime,
     v_ticket_timezone, v_ticket_event_id , v_ticket_type, v_ticket_seat_type,     v_ticket_opponent,
     v_ticket_total_seat, v_ticket_price ,     v_ticket_price_ext , v_start_bid_date, v_open_bid_price ,
     v_current_bid_count , v_current_high_bid , v_current_last_bid_datetime , v_current_bid_increment_by ,
     v_ticket_transaction_date , v_ticket_trade_status ;
if (t_ticket_trade.TICKET_SEAT_TYPE is null) then
for t_event_seat_section_row in cur_event_seat_section_row(t_ticket_trade.ticket_trade_id) loop
if (t_event_seat_section_row.event_seat_section is not null) then
v_section := t_event_seat_section_row.event_seat_section;
BEGIN
select alt_txt into v_parking_desc from ex_alt_txt
where event_id = p_event_id
and alt_txt_type = 'PARKING_DESC'
and original_txt = v_section;
t_ticket_trade.TICKET_SEAT_TYPE := v_parking_desc;
EXCEPTION
WHEN no_data_found THEN
v_section_row := 'Sec. ' || v_section;
if (t_event_seat_section_row.event_seat_row is not null) then
v_section_row := v_section_row || ', Row ' || t_event_seat_section_row.event_seat_row;
end if;
v_section_row := substr(v_section_row, 1, 30);
t_ticket_trade.TICKET_SEAT_TYPE := v_section_row;
END;
exit;
end if;
end loop;
end if;
if ((v_rowcount >= p_fromrow) and (v_rowcount <= p_torow)) then
-- p_ex_ticket_trade => t_ticket_trade
     -- THIS IS WHAT I CAN'T DO in the next line IF I get the results of the cursor in seperate variables
     v_ex_ticket_trade_obj:=ex_ticket_trade_tabobj.maprowtoobj(p_ex_ticket_trade => t_ticket_trade);
v_string:=v_string||v_ex_ticket_trade_obj.todatastring;
end if;
if (v_rowcount>=p_torow) then
exit;
end if;
v_section := null;
v_section_row := null;
v_parking_desc := null;
v_rowcount:=v_rowcount+1;
end loop;
v_prefix:='1' || v_delimiter || v_rowtotal || v_terminator;
v_return:= v_prefix || v_ex_ticket_trade_obj.tometadata||v_string;
return v_return;
end;
===========================================
I keep running into one error:
PLS-00403: expression 'T_TICKET_TRADE' cannot be used as an INTO-target of a SELECT/FETCH statement
How can I get each row of the cursor either as an object or as 'T_TICKET_TRADE' ?
Thanks,
Karuna

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would be able to hold a different bitmap
thanks in advanced

Creating dynamic variable names

I know there has got to a way to do this but I am not finding anything on google. I want to create a dynamic variable name like name + i so when your in a loop the names come out name1, name2 and so on till however many you want. I have tried
int name + i = 3;
int name[i] = 3; // which obviously won't but I had to try
int name{i} = 3;and I am out of ideas. Thanks for all your help.

I'd suggest using variables named j or x when posting code which uses them as array indexes.
[i] - is for italics formatting
[u] - is for underlined formatting
[code] is for class Example { ... } code formatting
etc.

Processing Dynamic Variable in JSTL

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