Call from Java Plsql Procedure with VArray as Out Parameter

Question

Hi,
I have a Java web application(Tomcat server) that call a plsql procedure with Varray as OUT parameter.
The Plsql code is perfectly compiled.
When i run the application, I get the following error msg in my Tomcat window:
java.sql.SQLException: ORA-06530: Reference to uninitialized composite
ORA-06512: at "SEMS1.PACK_SEMSADMIN_OFFEREDJOBS", line 102
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:573)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1891)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:109
3)
at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2047)
at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1940)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2709)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStat
{color:#0000ff}
Doubt: Do I need to declare ArrayDescriptors to retrieve the VArray from the Plsql procedure.
I think the below statement is enough; we need ArrayDescriptors only when we we wish to send a Plsql Object or Varray from Java code to the procedure. Plz correct me if not so.
dbCallableStatement.execute();
ARRAY SimpleOUTArray = (ARRAY) ((OracleCallableStatement) dbCallableStatement).
getObject(Integer.parseInt(arlParameterOutIndex.get(i).toString()));{color}
I am unable to realize where the mistake is?
{color:#800000}
{color}{color:#800000}
VARRAY AND PROC DETAILS:
TYPE STRUCT_JOB_DETAILS AS OBJECT
APPL_NO NUMBER (10),
S_FNAME VARCHAR2 (32 Byte),
S_MI VARCHAR2 (32 Byte),
S_LNAME VARCHAR2 (32 Byte),
APPL_DATE DATE,
DESCRIPTION VARCHAR2 (100 Byte),
S_UCID VARCHAR2 (8 Byte)
TYPE VARRAY_JOB_DETAILS IS VARRAY(100) OF STRUCT_JOB_DETAILS;{color}
{color:#800000}PROCEDURE:{color}
{color:#800000}CREATE OR REPLACE PACKAGE PACK_SEMSADMIN_OFFEREDJOBS
AS
TYPE Generic_Cursor_Type IS REF CURSOR;
--TYPE varray_job_detail is VARRAY(100) OF STRUCT_JOB_DETAILS;
--va_varray_job_detail varray_job_detail := varray_job_detail();
va_varray_job_detail VARRAY_JOB_DETAILS := VARRAY_JOB_DETAILS();
PROCEDURE Admin_Jobs_Offered_Rtr
ic_status IN VARCHAR2,
or_offered_jobs OUT Generic_Cursor_Type,
va_varray_job_detail OUT VARRAY_JOB_DETAILS
CREATE OR REPLACE PACKAGE BODY PACK_SEMSADMIN_OFFEREDJOBS
AS
PROCEDURE Admin_Jobs_Offered_Rtr
ic_status IN VARCHAR2,
or_offered_jobs OUT Generic_Cursor_Type,
va_varray_job_detail OUT VARRAY_JOB_DETAILS
AS
vc_query VARCHAR2(15000) := '';
vc_query_1 VARCHAR2(15000) := '';
counter NUMBER := 1;
vc_no NUMBER := 0;
or_applicants_list Generic_Cursor_Type;
TYPE type_appln_list IS RECORD
job_no NUMBER(10),
job_title VARCHAR2(50 BYTE),
account_no VARCHAR2(10 BYTE),
head_fname VARCHAR2(32 BYTE),
head_minitial VARCHAR2(10 BYTE),
head_lname VARCHAR2(32 BYTE),
num NUMBER
vn_appln_list type_appln_list;
TYPE type_job_offered IS RECORD
APPL_NO NUMBER (10),
S_FNAME VARCHAR2 (32),
S_MI VARCHAR2 (32),
S_LNAME VARCHAR2 (32),
APPL_DATE DATE,
DESCRIPTION VARCHAR2 (100),
S_UCID VARCHAR2 (8)
vn_job_offered type_job_offered;
BEGIN
vc_query := vc_query || ' SELECT jobs.job_no,job_title, account_no, head_fname, head_minitial, head_lname, num';
vc_query := vc_query || ' FROM jobs, ( ' ;
vc_query := vc_query || ' SELECT jobs.job_no,count(*) as num' ;
vc_query := vc_query || ' FROM student_apps ,jobs ' ;
vc_query := vc_query || ' WHERE jobs.job_no = student_apps.job_no' ;
vc_query := vc_query || ' AND (student_apps.status in (''o'',''t'')) '; --|| ic_status || ')' ;
vc_query := vc_query || ' AND jobs.status not in (''z'', ''Z'')' ;
vc_query := vc_query || ' GROUP BY jobs.job_no' ;
vc_query := vc_query || ' ) no_apps_off' ;
vc_query := vc_query || ' WHERE jobs.job_no = no_apps_off.job_no' ;
dbms_output.put_line('Executed Query_1');
va_varray_job_detail := VARRAY_JOB_DETAILS();
va_varray_job_detail.extend(100);
OPEN or_offered_jobs FOR vc_query;
LOOP
FETCH or_offered_jobs INTO vn_appln_list;
EXIT WHEN or_offered_jobs%NOTFOUND;
vc_query_1 := '';
vc_query_1 := vc_query_1 || ' SELECT stud_apps.appl_no APPL_NO, stud_apps.s_fname S_FNAME, ';
vc_query_1 := vc_query_1 || ' stud_apps.s_mi S_MI, stud_apps.s_lname S_LNAME, ';
vc_query_1 := vc_query_1 || ' stud_apps.appl_date APPL_DATE, look_up.description DESCRIPTION, ' ;
vc_query_1 := vc_query_1 || ' stud_apps.s_ucid S_UCID ' ;
vc_query_1 := vc_query_1 || ' FROM student_apps stud_apps,jobs jbs,lookup look_up' ;
vc_query_1 := vc_query_1 || ' WHERE stud_apps.status in (''o'',''t'') '; --(' || ic_status || ') ' ;
vc_query_1 := vc_query_1 || ' AND jbs.job_no = stud_apps.job_no' ;
vc_query_1 := vc_query_1 || ' AND jbs.status not in (''z '', ''Z'')' ;
vc_query_1 := vc_query_1 || ' AND stud_apps.status = look_up.code ' ;
vc_query_1 := vc_query_1 || ' AND look_up.type = ''st''' ;
vc_query_1 := vc_query_1 || ' AND stud_apps.job_no = ''' || vn_appln_list.job_no || ''' ' ;
vc_query_1 := vc_query_1 || ' ORDER BY appl_date' ;
dbms_output.put_line('Executed Query_2');
OPEN or_applicants_list FOR vc_query_1;
LOOP
FETCH or_applicants_list INTO vn_job_offered;
EXIT WHEN or_applicants_list%NOTFOUND;
va_varray_job_detail(counter).APPL_NO := vn_job_offered.APPL_NO;
va_varray_job_detail(counter).S_FNAME := vn_job_offered.S_FNAME;
va_varray_job_detail(counter).S_MI := vn_job_offered.S_MI;
va_varray_job_detail(counter).S_LNAME := vn_job_offered.S_LNAME;
va_varray_job_detail(counter).APPL_DATE := vn_job_offered.APPL_DATE;
va_varray_job_detail(counter).DESCRIPTION := vn_job_offered.DESCRIPTION;
va_varray_job_detail(counter).S_UCID := vn_job_offered.S_UCID;
counter := counter + 1;
END LOOP; --end of FOR
CLOSE or_applicants_list;
END LOOP; -- end of FETCH
END Admin_Jobs_Offered_Rtr;
END PACK_SEMSADMIN_OFFEREDJOBS;
/{color}
Reqire help plzzzz !!!
Thanks.

Answer 1

Originally posted by JDBC Development Team:
It's very similar to other datatype except that it uses OracleTypes.ARRAY typecode and the value is mapped to a oracle.sql.ARRAY instance. The code looks as follows --
cstmt.registerOutParameter (idx, OracleTypes.ARRAY, "VARRAY_TYPE_NAME_HERE");
cstmt.execute ();
ARRAY array = (ARRAY) cstmt.getObject (idx);
Thanks for your reply.
I have to use:-
OracleCallableStatement cs1 = (OracleCallableStatement )conn.prepareCall
( "{call proj_array(?)}" ) ;
for retrieving a collection as an OUT parameter.
This gives me the errors:-
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Blob getBlob(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Array getArray(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Clob getClob(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
C:\jdbc\VarraySQL.java:0: The method oracle.jdbc2.Ref getRef(int) declared in class oracle.jdbc.driver.OracleCallableStatement cannot override the method of the same signature declared in interface java.sql.CallableStatement. They must have the same return type.
import java.sql.*;
^
How do I get rid of these errors?
null