Calling a java object from a store procedure

I have written a translation object in java that takes a $en_var in and returns its path.
What I need to do is call that object from a PL/SQL store procedure. All the examples I have seen treat the store procedure as a wrapper around the java object.
But in my store procedure calling the object is only one part of the procedures role:
The store procedure code is :
CREATE OR REPLACE PROCEDURE WRITE_TO_FILE(in_file_name IN VARCHAR, in_en_var IN VARCHAR)
file_handle UTL_FILE.FILE_TYPE;
file_location VARCHAR2(50)
BEGIN
I need to be able to call the javaobject translation here
file_location = translation.translatePath(in_en_var)
file_handle := UTL_FILE.FOPEN(file_location, in_file_name, 'w');
dbms_output.put_line ('input file name opened file name' ||in_file_name ||'-->' ||in_file_location);
UTL_FILE.put_line(file_handle,'Hello Tony);
UTL_FILE.FCLOSE(file_handle);
END WRITE_TO_FILE;
I call the java class method translatePath with a string the en_var which returns the path as a string which is then passed as a parameter to UTL_FILE.FOPEN.
Thanks for any help
Tony

No Longer the problem

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Permission problem calling a java object from a store procedure

When I run my store procedure
CREATE OR REPLACE PACKAGE BODY confirms_write_to_file
AS
FUNCTION translate(in_en_var in VARCHAR2)
RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'translate.translatePath(java.lang.String) return java.lang.String';
PROCEDURE write_to_file(in_file_name IN VARCHAR, in_en_var IN VARCHAR)
IS
file_handle               UTL_FILE.FILE_TYPE;
file_location VARCHAR2(50);
BEGIN
file_location := translate(in_en_var);
dbms_output.put_line ('opened file location' ||file_location);
END write_to_file;
END confirms_write_to_file;
I get the following error:
exec confirms_write_to_file.write_to_file('zzzz','$RIMS_LOG');
SQL> exec confirms_write_to_file.write_to_file('zzzz','$RIMS_LOG');
Exception java.security.AccessControlException: the Permission
(java.io.FilePermission <<ALL FILES>> execute) has not been granted by
dbms_java.grant_permission to
SchemaProtectionDomain(RIMS|PolicyTableProxy(RIMS))
opened file locationProcess problem
PL/SQL procedure successfully completed.
When I try to to grant myself the permissions
begin
dbms_java.grant_permission('rims','java.io.FilePermission','*','execute');
dbms_java.grant_permission('rims', 'java.lang.RuntimePermission', '*','writeFileDescriptor' );
end;
I get the following Error:
oracle.aurora.vm.IdNotFoundException: rims is not a user or role
at oracle.aurora.rdbms.DbmsRealm.getId(DbmsRealm.java)
at oracle.aurora.rdbms.DbmsRealm.getId(DbmsRealm.java)
at
oracle.aurora.rdbms.security.PolicyTableManager.findAll(PolicyTableManager.java)
at oracle.aurora.rdbms.security.PolicyTableManager.find(PolicyTableManager.java)
at
oracle.aurora.rdbms.security.PolicyTableManager.activate(PolicyTableManager.java
at
oracle.aurora.rdbms.security.PolicyTableManager.grant(PolicyTableManager.java)
begin
ERROR at line 1:
ORA-29532: Java call terminated by uncaught Java exception:
oracle.aurora.vm.IdNotFoundException: rims is not a user or role
ORA-06512: at "SYS.DBMS_JAVA", line 0
ORA-06512: at line 2
My java code is as follows
import java.io.*;
import java.util.*;
class translate
     public static String translatePath(String envar)
          Runtime rt = Runtime.getRuntime();
          int bufSize = 4096;
          byte buffer[] = new byte[bufSize];
          String path = null;
          Process p = null;
          int len = 0;
          try
               p = rt.exec("echo "+envar);
               BufferedInputStream bis = new BufferedInputStream(p.getInputStream());
               while ((len = bis.read(buffer, 0, bufSize)) != -1)
                    System.out.write(buffer, 0, len);
               path = new String(buffer);
               p.waitFor();
          catch(Exception e)
               System.out.println("Exception "+e);
               return "Process problem ";
          return path;

Tony,
I answered this very same question that you posted at the JavaRanch forum.
Good Luck,
Avi.

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a sample of code
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Dear all,
I'm experimenting with calling Java from PL/SQL.
My simple attempts work, which is calling public static [java] methods through PL/SQL wrappers from SQL (and PL/SQL). (See my example code below).
However it is the limitation of the public static methods that puzzels me.
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- I need to start the engine of a scpecific car
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Somehow I need to be able to execute the following in PL/SQL:
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vMyCar_Porsche CAR;
vMyCar_Fiat CAR;
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vMyCar_Fiat = new CAR();
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END;
Thanks in advance.
Best Regards,
Ruben
My current example code is the following:
JAVA:
===
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED CODAROUL."RMG/BO/RMG_OBJECT" as package RMG.BO;
public class RMG_OBJECT {
private static RMG_OBJECT instance = new RMGOBJECT();
private String rmgObjectNaam;
private RMG_OBJECT(){
this.rmgObjectNaam = "NonDetermined";
public static String GET_RMGOBJECT_NAAM () {
String toestand = null;
if (_instance == null) {toestand = "DOES NOT EXIST";} else { toestand = "EXISTS";};
System.out.println("instance : " + toestand);
System.out.println("object name is : " + _instance.rmgObjectNaam);
return _instance.rmgObjectNaam;
public static Integer SET_RMGOBJECT_NAAM (String IN)
try
_instance.rmgObjectNaam = IN;
return 1;
catch (Exception e)//catch
System.out.println("Other Exception: " + e.toString());
e.printStackTrace();
return 5;
} //catch
PL/SQL Wrapper:
==========
CREATE OR REPLACE FUNCTION CODAROUL.SET_RMGOBJECT_NAAM(NAAM IN VARCHAR2) return NUMBER AS
LANGUAGE JAVA NAME 'RMG.BO.RMG_OBJECT.SET_RMGOBJECT_NAAM (java.lang.String) return java.lang.Integer';
Calling from SQL:
==========
CALL dbms_java.set_output(2000);
select CODAROUL.GET_RMGOBJECT_NAAM() from dual;
Edited by: RubenS_BE on Apr 6, 2012 5:35 AM
Edited by: 925945 on Apr 6, 2012 5:41 AM

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Calling a java object from a store procedure

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