Named parameters in stored function

Hi,
I am trying to execute stored function from java in oracle . I am using Oracle 9.2.0.1.0 and the newest JDBC drivers, ie. for 10g which are compatible. I have flicked through JDBC Named Parameters example but it only addresses stored procedures.
The problem I have is that I do not know what name the return value of stored procedure has.
stored function parameter names:
1. ????
2. test1 Mode: IN
3. test2 Mode: IN
?=call test_function(?,?);
When I am trying to set values as indexes everything works perfect.
CallableStatement cs = .....
cs.registerOutParameter(1, Types.VARCHAR);
cs.setString(2, "a");
cs.setString(3, "b");
cs.execute();
String returnedValue = cs.getString(1);
However, when I am trying to use named parameters the code looks like this:
CallableStatement cs = .....
cs.registerOutParameter(1, TYPES.VARCHAR);
cs.setString("test1", "a");
cs.setString("test2", "b");
and the question is what is the name of return parameter.
I have tried to put the same name as the name of stored function but is reports error.
Instead I had to first getmetadata from oracle and in case of stored functions utilize it, unfortunatelly getting metadata has perfomance issues and I heard that oracle 10g is even slower in getting metadata.
If anyone knows the answer to my question, please answer.
Thank you in advance,
Mateusz Szczap
Java Programmer
NCDC
[email protected]
http://www.ncdc.pl

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Hi Avi,
as far as I know the return value of a PL/SQL function does not have a name, as oposed to the parameters of a PL/SQL function, which must have a name. One could argue that the return value of a function is called the same as the function itself. I have tried that option but it does not work.
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naama wrote:
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user8699561 wrote:
A developer in my company approached us with a question about performance considerations while writing stored procedures or functions that embed XML.
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when I load it to database i get wrong values in column
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CREATE OR REPLACE PACKAGE types AS
TYPE cursorType IS REF CURSOR;
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CREATE OR REPLACE FUNCTION list_recs (id IN NUMBER)
RETURN types.cursorType IS tracks_cursor types.cursorType;
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SQL> print c
COLUMN1 A1 ROW_NUMBER
rec_11 jacob 11
rec_12 jacob 11
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import java.io.*;
import oracle.jdbc.driver.*;
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C:\Jacob\Work\Java\Test\Vaultus\Oracle9i\FunctionReturnsResultset>java
list_recs
Could not call stored function
java.sql.SQLException: ORA-00600: internal error code, arguments:
[ttcgcshnd-1], [0], [], [], [], [], [], []
at
oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
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at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:543)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1405)
at oracle.jdbc.ttc7.TTC7Protocol.fetch(TTC7Protocol.java:889)
at
oracle.jdbc.driver.OracleStatement.<init>(OracleStatement.java:490)
at
oracle.jdbc.driver.OracleStatement.getCursorValue(OracleStatement.java:2661)
at
oracle.jdbc.driver.OracleStatement.getObjectValue(OracleStatement.java:4189)
at
oracle.jdbc.driver.OracleStatement.getObjectValue(OracleStatement.java:4123)
at
oracle.jdbc.driver.OracleCallableStatement.getObject(OracleCallableStatement.java:541)
at list_recs.main(list_recs.java:42)
C:\Jacob\Work\Java\Test\Vaultus\Oracle9i\FunctionReturnsResultset>
Any help is greatly appreciated,
Jacob Nikom

Thank you for your suggestion.
I tried it, but got the same result. I think the difference in the syntax is due to the Oracle versus SQL92 standard
conformance. Your statament is the Oracle version and mine is the SQL92. I think both statements are acceptable
by the Oracle.
Regards,
Jacob Nikom

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Thank you for the notes. Yes, the misplaced quotes were typos. I'm handtyping a truncated version of the function so I don't put too much info in the post. And yes, i = 1 'cuz the first rows of the table are titles. So the current frustration is that I seem to be assigning all the right data to the right parameters but nothing is saving to the database.
I declare updateData as a variable at the top of the script file
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The correctly typed.text statement is:
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(The data I'm saving is entered in text boxes inside table cells.) And the current version of the loop is:
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I am using a combination of air.Introspector.Console.log to check the results of code and I'm using Firefox's SQlite manager to handle the database. The database is currently sitting on the Desktop to facilitate testing and I have successfully updated/changed data in this table through the SQLite Manager so I don't think I'm having permission errors and, see below, I have another function successfully saving data to another table.
I currently have another function that uses ? for the parametersin the .text of a INSERT/REPLACE statement and that one works fine. But, only one line of data is being saved so there is no loop involved. I tried changing the UPDATE statement in this function to the INSERT/REPLACE just to make something save back to the database but I can't make that one work either.I've a (And, I've tried so many things now, I don't even remember what actually saved something --albeit incorrectly --to the database in one of my previous iterations with the for loops.)
I'm currently poring through Sqlite and Javascript tomes to see if I can find what's missing but if anything else jumps out at you with the corrected code, I'd appreciate some ideas.
Jeane

Oracle 8i stored functions

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How to get result of Select from stored function.

I need to get result of select from a stored function.
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Hi,
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This would possibly be due to 'restriction in the OCI layer'. Can anyone help? Is there really now way to call a valid PLSQL stored function via a named query when the return type is BOOLEAN?
thanks

I can't comment on possible issues you might have with the driver, but if it can be done in JDBC, it should be possible in TopLink.
TopLink has the StoredFunctionCall which extends the StoredProcedureCall but adds an unnamed ouput parameter in the first spot of its parameter list. You will need to get the databasefield and set its type to BOOLEAN ie:
DatabaseField returnField = (DatabaseField)yourStoredFunctionCall.getParameters().firstElement();
returnField.setName(name);
returnField.setSqlType(Type.BOOLEAN);Be sure not to use the setType() method, as I believe TopLink will try to use the Type.BIT when a boolean class is used as the classtype.
Best Regards,
Chris

Getting result of stored functions in UCM components

Hi,
I have to create UCM component that executes function stored in DB and somehow "inject" it's return value to iDoc.
How can I get return value of DB stored function?
I managed to run the function, but I can not get it's return value.
The only documentation I found is inside "documentation" folder from HowToComponents bundle, but there is no even javadoc for executeCallable that returns CallableResults.
The queries I used are:
{ ? = call package.func(?) }
or
BEGIN ? := package.func(?); END;
I added 2 parameters to these queries ( in queries html file)
In both cases the function gets executed (I see changes in DB)
after the execution I try to getInteger("param1_name") on returned CallableResults and recieve NullPointerException:
Runtime error: java.lang.NullPointerException
at oracle.jdbc.driver.OracleCallableStatement.getInt(OracleCallableStatement.java:1119)
at intradoc.jdbc.JdbcCallableResults.getData(JdbcCallableResults.java:203)
at intradoc.jdbc.JdbcCallableResults.getInteger(JdbcCallableResults.java:98)
at DatabaseProvider.DatabaseProviderHandler.executeReservation(DatabaseProviderHandler.java:224) <------ calling getInteger("param1_name")
the param1_name is not changed in iDoc.
Thanks.
Edited by: dpd on Jan 13, 2010 8:24 AM

Hi,
you can do this with just one script object.
For example the "MyTexts" script object with the string variables and a function to return the values.
var infotext1 = "Lorem ipsum dolor sit amet"
var infotext2 = "Non eram nescius Brute cum"
function getText(FieldNumber) {
return eval("infotext" + FieldNumber);
To populate a field you can call the function in the script object with an argument, which is the alias for the varaible number you want to return.
You don't need to enter the full somExpression to your script object, the name is enough.
Textfeld1.rawValue = MyTexts.getText(1);

Named parameters in stored function

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