Returning Resultset from different DB

Hi folks,
I am working on a developing a Database Framework. The user gives information about the stored proc to execute,parameters required by the stored prc, the connection url ,credentials and database provider(which can be Oracle,SQL Server or DB2). I have to execute the query and return back the resultset to the user.
What I am interested in knowing is does each and every DB provider handles or create the ResultSet in different way?
For Example:
In oracle the Stored proc call looks like setting a registerOutParameter and then getting the ResultSet:
String query = "{call ? := myStoredProc(?)}";
CallableStatement stmt = conn.prepareCall(query);
// register the type of the out param - an Oracle specific type
stmt.registerOutParameter(1, OracleTypes.CURSOR);
// set the in param
stmt.setFloat(2, price);
// execute and retrieve the result set
stmt.execute();
ResultSet rs = (ResultSet)stmt.getObject(1);And in SQL Server I can directly get the ResultSet by doing
ResultSet rs = stmt.executeQuery();Also the query string will be different i.e.
String query = "{call myStoredProc(?)}"DB2 will be same as Oracle I guess.
So my question is , is there any generic way to get the ResultSet???
Sorry if it sounds a dumb question.I am new to this arena..
Thanks in advance
Pankaj

DB2 will be same as Oracle I guess.No. Getting the resultset in DB2 looks the same as that for SQL Server. Oracle is the only one that has a slightly different code.

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2 return sys_refcursor as
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7782 CLARK      MANAGER     2450
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7934 MILLER     CLERK       1300
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9 /
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PL/SQL procedure successfully completed.
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7654 MARTIN     SALESMAN    1250
7698 BLAKE      MANAGER     2850
7844 TURNER     SALESMAN    1500
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Hi,
First thing U can't do this way in java. If U are executing this sort of database query, after retriving all the values, put inside Haahtable or HashMap as the application required and return it.
Otherwise execute this query at the same place where u r printing values in jsp page insted of writing it inside seperate method..It will work.
If still it's not workimg, please let me know.
Rajeh Pal

How to return ResultSet from one function to another?

Hi friends,
Greetings.
How do we pass the query Results from one function to another function?
Actually i have a database in the server and i am the client.
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I have written it approximately only because the problem is not with the query :(
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Regards

Crossposted over all places:
[http://forums.sun.com/thread.jspa?threadID=5336533]
[http://forums.sun.com/thread.jspa?threadID=5336534]
[http://forums.sun.com/thread.jspa?threadID=5336532]
[http://forums.sun.com/thread.jspa?threadID=5336519]
[http://forums.sun.com/thread.jspa?threadID=5336510]
Stop crossposting. It's very rude.

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Hello,
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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Jonathan Roberts ([email protected]):
Hi.
Does anyone know what the syntax is for using java stored procedures or functions for returning a rowset.
This includes the java in the java-sql and the java-procedure definition.
Cheers
Jonathan<HR></BLOCKQUOTE>
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thanks for the reply,
The result set would be returned to the client .....which would do further processing.The client does not even know that the data is organized in two tables..Therefore given an id, client would expect to have all the information...i.e the info from table 1 and info from table 2 where the relation ship between id and other ids are stored.
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Hello, this is the sample from the SQL Developer help to create proc:
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ktrock wrote:
Hello, this is the sample from the SQL Developer help to create proc:A very poor example..
You have to write a cursor just to display results from a query. To me this is whacked but I'll go with it. All SQL you send to Oracle for parsing and execution winds up as SQL cursors in the server's SQL shared pool. You, the client, then get a handle as reference to this cursor that was created for your SQL statement. Using this handle you can now fetch the output of the cursor and consume it on the client side.
So there is no such thing as not using a cursor - you always use cursors. Many times it will be implicitly as you won't see the cursor workings as the client hides that from you.
As for DBMS_OUTPUT and PL/SQL... PL/SQL cannot "write output". And time and again (stupid?) people will use DBMS_OUTPUT thinking that is "writing to the client's display device".
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So how on earth does it make sense to take SQL data on the server (that is structured data and can vary significantly in volume), and write that as plain text into a PL/SQL variable?
It does not make sense. At all. Bluntly put - it is just plain bloody stupid.
So how do you return data using PL/SQL? The same way as you return data using SQL.
PL/SQL allows the complexity of the SQL language, database model and so on to be moved from the client application into PL/SQL itself. The client thus no longer need to know table names, what to join where and when, how to write effective SQL and so on. It calls a PL/SQL procedure with optional parameters. This procedure has the logic to create the required SQL (based on the parameters too if applicable) and return the cursor handle for that SQL.
The client thus calls PL/SQL, PL/SQL serves as the SQL abstraction layer and does the complex SQL bit, and PL/SQL then returns the SQL cursor handle to the client.
In the PL/SQL language, there are different data types for dealing with the same SQL cursor handle - depending on what you want to do with that SQL cursor.
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Also keep in mind that a SQL cursor is NOT a result set. It is not a data set that is instantiated or created on the server that contains the data (or references to the data) for your SQL.
If this was the case - just how many such cursor result sets could the server create before running out of memory?
A cursor is an executable program. The source SQL code is compiled into a program called a cursor. This cursor contains the execution steps that the server needs to follow to find the data. The cursor then outputs this data as data is found. The execution plan of a cursor shows how this program looks like.

Returning Resultset from different DB

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