How to call userdefined function in JSP

Iam writing my own method in JSP ,how to call that method.
thanks in advance
thanks
-RR-

<%!
static void sayHello(ServletOutputStream out){
out.print("Hello");
}%>
<%
sayHello(response.getOutputStream());%>
You method can either be static or not, but in both case avoid instance/static variables as you will get concurrency issues
if you use tomcat, take a look in tomcat/work/catalina/_localhost/org/apache/jsp
open the .java file generated by the container and you will quickly understand how this works

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How to call userdefined function in JPA?

Hi,
Please share some sample code on how to call an User defined oracle function in JPA.
I tried in this way:
Query q = em.createNativeQuery("CALL Datbaseschemaname.GetEstimateID(?)");
          q.setParameter(1, "NEW");
          String result = (String)q.getSingleResult();
GetEstimateID is my function name.
I got the below exception:
6:22:44,246 INFO [STDOUT] Hibernate: CALL Datbaseschemaname.GetEstimateID(?)
16:22:44,266 WARN [JDBCExceptionReporter] SQL Error: 6576, SQLState: 65000
16:22:44,266 ERROR [JDBCExceptionReporter] ORA-06576: not a valid function or procedure name
16:22:44,266 ERROR [STDERR] javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Thanks.
Edited by: Java_sunny on Jun 1, 2008 4:58 PM

Hi ,
can you some one help me please..below is snippet:-
String sql = "SELECT oracleFunctionName(?1,?2) FROM DUAL";
Query res = (Query)entitymanager.createNativeQuery(sql)
                    .setParameter(1, new String("xxx"))
                    .setParameter(2, new String("yy"));
I dont want to use Select and Dual key words in my sql because I am not able to modified the record inside the db

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i'm trying to call an oracle query-function from ejb3.
The oracle function:
create or replace FUNCTION getSecThreadCount(secId in NUMBER,avai in NUMBER)
RETURN SYS_REFCURSOR is cur SYS_REFCURSOR;
m_sql VARCHAR2(250);
BEGIN
m_sql:='select count(thrId) from thread where secId='|| secid||'
and thrAvai='|| avai;
open cur for m_sql;
return cur;
END;
I'v tried several ways to call it,but all failed:
1. the calling code:
public Object getSectionThreadCount(int secId,int avai){
          Query query=manager.createNativeQuery("{call getSecThreadCount(?,?) }");
          query.setParameter(1, secId);
          query.setParameter(2, avai);
          return query.getSingleResult();
but i got the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: ORA-06550: row 1, col 7:
PLS-00221: 'GETSECTHREADCOUNT' not procedure or not defined
ORA-06550: row 1, col 7:
PL/SQL: Statement ignored
2. the calling code:
@SqlResultSetMapping(name = "getSecThreadCount_Mapping")
@NamedNativeQuery(name = "getSecThreadCount",
query = "{?=call getSecThreadCount(:secId,:avai)}",
resultSetMapping = "getSecThreadCount_Mapping",
hints = {@QueryHint(name = "org.hibernate.callable", value = "true"),
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public Object getSectionThreadCount(int secId,int avai){
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          query.setParameter("secId", secId);
          query.setParameter("avai", avai);
          return query.getSingleResult();
but i run into the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: lost in index IN or OUT parameter:: 3
By the way, i have successfully called the function from hibernate. And i use oracle 11g, JBoss5 RC1.
Could anyone tell me how to call the function from EJB3?
Thanks.

Here's a working model:
package.procedure: (created in example schema scott)
CREATE OR REPLACE package body data_pkg as
type c_refcursor is ref cursor;
-- function that return all emps of a certain dept
function getEmployees ( p_deptId in number
return c_refcursor
is
    l_refcursor c_refcursor;
begin
     open l_refcursor
    for
          select e.empno as emp_id
          ,        e.ename as emp_name
          ,        e.job   as emp_job
          ,        e.hiredate as emp_hiredate
          from   emp e
          where e.DEPTNO = p_deptId;
    return l_refcursor;
end getEmployees;
end data_pkg;
/entity class:
package net.app.entity;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedNativeQuery;
import javax.persistence.QueryHint;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
@SuppressWarnings("serial")
@Entity
@Table (name="emp")
@SequenceGenerator(name = "EmployeeSequence", sequenceName = "emp_seq")
@NamedNativeQuery( name = "getEmpsByDeptId"
               , query = "{ ? = call data_pkg.getEmployees(?)}"
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               , hints = { @QueryHint(name = "org.hibernate.callable", value = "true")
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public class Employee implements Serializable
    @Id
    @Column(name="emp_id")
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "EmployeeSequence")
    private int id;
    @Column(name="emp_name")
    private String name;
    @Column(name="emp_job")
    private String job;
    @Column(name="emp_hiredate")
    private Date hiredate;
    // constructor
    public Employee (){}
    // getters and setters
    public int getId()
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etc...session bean:
package net.app.entity;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
@Stateless
public class ScottAdminImpl implements ScottAdmin
    @PersistenceContext
    private EntityManager entityManager;
    @SuppressWarnings("unchecked")
    public List<Employee> getEmployeesByDeptId(int deptId)
     ArrayList<Employee> empList;
     try
         Query query = entityManager.createNamedQuery("getEmpsByDeptId");
         query.setParameter(1, deptId);
         empList = (ArrayList<Employee>) query.getResultList();
         return empList;
     catch (Exception e)
         e.printStackTrace(System.out);
         return null;
}client:
package net.app.client;
import java.util.List;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
public class ScottClient
    public static void main(String[] args)
     try
         // create local interface
         InitialContext ctx = new InitialContext();
         ScottAdmin adminInterface = (ScottAdmin) ctx.lookup("ScottAdminImpl/remote");
         // select employees by deptno
         int deptno = 20;
         List<Employee> empList = adminInterface.getEmployeesByDeptId(deptno);
         // output
         System.out.println("Listing employees:");
         for (Employee emp : empList)
          System.out.println(emp.getId() + ": " + emp.getName() + ", " + emp.getJob() + ", " + emp.getHiredate());
     catch (NamingException e)
         e.printStackTrace(System.out);
}Basically you just ignore the refcursor outbound parameter.
This is a stored function, have yet to try outbound refcursor parameters in stored procedures...
Edited by: _Locutus on Apr 2, 2009 2:37 PM

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Syntax
CALL FUNCTION func DESTINATION dest [EXPORTING p1 = a1 p2 = a2 ...]
[IMPORTING p1 = a1 p2 = a2 ...]
[CHANGING p1 = a1 p2 = a2 ...]
[TABLES t1 = itab1 t2 = itab2 ...]
[EXCEPTIONS [exc1 = n1 exc2 = n2 ...]
[system_failure = ns [MESSAGE smess]]
[communication_failure = nc [MESSAGE cmess]]
[OTHERS = n_others]].
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Can anyone tell me solution that:
How to call java function in javascript?
Thanks,
VIDs

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Hi,
I've the following function returning OBJECT type.
Pease advice me how to call this function
CREATE OR REPLACE TYPE GET_EMP_OBJ is object
   ( emp_name varchar2(50) ,
     mgr_id   number,
     dept_id number
CREATE OR REPLACE FUNCTION get_emp(P_emp_no NUMBER )
RETURN GET_EMP_OBJ IS
t_emp_info GET_EMP_OBJ ;
v_ename EMP.ename%TYPE;
v_mgr    EMP.mgr%TYPE ;
v_deptno EMP.deptno%TYPE;
v_ename1 EMP.ename%TYPE;
v_mgr1    EMP.mgr%TYPE ;
v_deptno1 EMP.deptno%TYPE;
BEGIN
FOR rec IN ( SELECT ename , mgr , deptno
                 FROM emp )
LOOP
     v_ename := rec.ename ;
     v_ename1 := v_ename1||'|'||v_ename ;
     v_mgr   := rec.mgr   ;
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     v_deptno:= rec.deptno;
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END LOOP ;
t_emp_info := GET_EMP_OBJ (v_ename,v_mgr,v_deptno ) ;
RETURN t_emp_info ;
EXCEPTION WHEN OTHERS THEN
DBMS_OUTPUT.put_line ('Error'||SQLCODE||','||SQLERRM ) ;
END;The above function got created successfully.
And i'm confused how to call this functions. I tried like below but didn't work
DECLARE
t_emp_info_1 GET_EMP_OBJ ;
BEGIN
   t_emp_info_1 := get_emp(7566) ;
   for i in 1..t_emp_info_1.COUNT
      LOOP
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     END LOOP;
END;

SQL> CREATE OR REPLACE TYPE GET_EMP_OBJ is object
2     ( emp_name varchar2(50) ,
3       mgr_id   number,
4       dept_id number
5     );
6 /
Type created.
SQL> ed
Wrote file afiedt.buf
1 CREATE OR REPLACE FUNCTION get_emp(empno NUMBER )
2    RETURN GET_EMP_OBJ IS
3    t_emp_info GET_EMP_OBJ ;
4 BEGIN
5    begin
6      select get_emp_obj(ename, mgr, deptno) into t_emp_info
7      from emp
8      where empno = get_emp.empno;
9    exception
10      when no_data_found then
11        t_emp_info := new get_emp_obj(null,null,null);
12    end;
13    return t_emp_info;
14* END;
SQL> /
Function created.
SQL> set serverout on
SQL>
SQL> declare
2    t_emp_info GET_EMP_OBJ ;
3 BEGIN
4     t_emp_info := get_emp(7566);
5     DBMS_OUTPUT.put_line ('Values are: '||t_emp_info.emp_name||', '||t_emp_info.mgr_id||', '||t_emp_info.dept_id);
6 END;
7 /
Values are: JONES, 7839, 20
PL/SQL procedure successfully completed.
SQL>

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Regards

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if err.description <> "" then
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set rs = nothing
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