Storing Expression Value in PLSQL and Java

Every Expression return True or False. So we can easily store their value in Boolean expression

Using this Method we can easily check conditions instead of testing these scenarios in IF-ELSE condition .

---Example of Storing Expression Value in PLSQL

---Example of Storing Expression Value in PLSQL

--By mFaisal

declare

lExpressionValue boolean;

begin

  --- Expression Value

  lExpressionValue:=1=2 or 2=2;

 

  -- Is True Then

  ---1

  ---else

  --2

 

if  lExpressionValue Then

    --1

  DBMS_OUTPUT.put_line('Expression is  True..');

  else

    --- 2

  DBMS_OUTPUT.put_line('Expression is not True..');

  end if;

end;

Example of JAVA Code

public class Server {

    public static void main(String[] args) {

        Server.isTrue((1==2));

    //isTrue((1=1)));

    }

   

    public static void isTrue(boolean expression) {

    if (expression) {

       System.out.println("Expression is true.");

    }

    else

    {

        System.out.println("Expression is not true.");

    }

    }

   

   

}

OOP Concepts in PLSQL with Record type

 CREATE OR REPLACE TYPE HTML_OBJ_Record is object  (Body_String Clob)

CREATE OR REPLACE TYPE HTML_OBJ AS OBJECT (

   HTML_Record  HTML_OBJ_Record,

   MEMBER PROCEDURE init( SELF IN OUT NOCOPY HTML_OBJ)

  )

CREATE OR REPLACE TYPE BODY HTML_OBJ AS

  

  MEMBER PROCEDURE init (SELF IN OUT NOCOPY HTML_OBJ) IS

  BEGIN

         SELF.HTML_Record:=new HTML_OBJ_Record(null);

         SELF.HTML_Record.body_string:='Hello';

  END;

END;

declare

html HTML_OBJ;

begin

    html := new HTML_OBJ(null);

    DBMS_OUTPUT.put_line('=> '||html.HTML_Record.body_string);

    html.init();

    DBMS_OUTPUT.put_line('=> '||html.HTML_Record.body_string);  

  end;

  

FND_PROFILE AND FND_GLOBAL

FND_PROFILE values: 

fnd_profile.value('PROFILEOPTION');
fnd_profile.value'MFG_ORGANIZATION_ID');
fnd_profile.value('ORG_ID');
fnd_profile.value('LOGIN_ID');
fnd_profile.value('USER_ID');
fnd_profile.value('USERNAME');
fnd_profile.value('CONCURRENT_REQUEST_ID');
fnd_profile.value('GL_SET_OF_BKS_ID');
fnd_profile.value('SO_ORGANIZATION_ID');
fnd_profile.value('APPL_SHRT_NAME');
fnd_profile.value('RESP_NAME');
fnd_profile.value('RESP_ID');

FND_GLOBAL values: 

FND_GLOBAL.USER_ID;
FND_GLOBAL.APPS_INTIALIZE;
FND_GLOBAL.LOGIN_ID;
FND_GLOBAL.CONC_LOGIN_ID;
FND_GLOBAL.PROG_APPL_ID;
FND_GLOBAL.CONC_PROGRAM_ID;
FND_GLOBAL.CONC_REQUEST_ID;

How to get next value of Sequence dynamically in Oracle

we can execute sequence and get its value using Execute Immediate.
here is the Example Code;

CREATE SEQUENCE mySEQ START WITH 1 INCREMENT BY 1 MINVALUE 1 MAXVALUE 1000000 NOCYCLE NOCACHE ORDER

declare

  SequenceValue number;

begin

    EXECUTE IMMEDIATE 'select mySEQ.nextval  from dual' INTO SequenceValue;

    ---Now you can Use SequenceValue anywhere

end;

/

drop sequence mySEQ 

/

Rownum in SQL

The Oracle/PLSQL ROWNUM function returns a number that represents the order that a row is selected by Oracle from a table or joined tables.

Example

select * from all_objects where rownum < 2

Oracle DDL with EXECUTE IMMEDIATE -- Drop Multiple Object at once

If You want to Drop Multiple Object at once use this script. Please using

This script check cursor query and take update of your database

/* Formatted on 3/31/2020 1:40:01 am (QP5 v5.139.911.3011) */

DECLARE

   CURSOR OBJECTLIST

   IS

      SELECT    'Drop '

             || OBJECT_TYPE

             || '  '

             || OWNER

             || '.'

             || OBJECT_NAME

             || ''

                DROPCOMMAND

        FROM ALL_OBJECTS

       WHERE OWNER = 'APPS' AND OBJECT_NAME LIKE 'EBA%';

BEGIN

   FOR LDX IN OBJECTLIST

   LOOP

      DBMS_OUTPUT.PUT_LINE (TO_CHAR (LDX.DROPCOMMAND));

      BEGIN

         EXECUTE IMMEDIATE LDX.DROPCOMMAND;

         DBMS_OUTPUT.PUT_LINE ('Object has been dropped.');

      EXCEPTION

         WHEN OTHERS

         THEN

            DBMS_OUTPUT.

            PUT_LINE (

                  SQLERRM

               || ' While performing this Command,'

               || TO_CHAR (LDX.DROPCOMMAND));

      END;

   END LOOP;

END;

select 'Drop '||OBJECT_TYPE||'  '||OWNER||'.'||OBJECT_NAME||';'

from all_objects

where owner='APPS'

AND OBJECT_NAME LIKE 'EBA%'

Java File.deleteOnExit() method

1. import java.io.File;  
2. import java.io.IOException;  
3. public class DeleteOnExitExample  
4. {  
5. public static void main(String[] args)  
6. {  
7. File temp;  
8. try  
9. {  
10. temp = File.createTempFile("abc", ".temp");     //creating a .temp file  
11. System.out.println("Temp file created at location: " + temp.getAbsolutePath());      
12. temp.deleteOnExit();                     //delete file on runtime exit  
13. System.out.println("Temp file exists : " + temp.exists());  
14. }   
15. catch (IOException e)  
16. {  
17. e.printStackTrace();  
18. }  
19. }  
20. }  

How to access APEX application from other Computer

If you want to access/operate Apex application from other computer then Case 1 applicable Otherwise if you want locally then Case 2 applicable.

Case 1. URL : http://ComputerName:Port/apex
or http://IPaddress:Port/apex

Case 2. URL : http://localhost:/apex

For Case 1 if you are not able to access the application then have to enable network access true.
To do so, you have to log on as SYS with SYSDBA privilege and execute the following command.

execute dbms_xdb.setListenerLocalAccess(l_access => FALSE);

Just copy the above command and paste into your SQL Editor and execute. After scuccessfull execution of the above command, if the remote computer name is ABC and apex access port 8080 then your url will be as bellow-

http://abc:8080/apex

If the remote computer IP is 119.18.144.201 and apex access port 8080 then your url will be as bellow-

http://119.18.144.201:8080/apex

index Table Type in PLSQL

DECLARE

  TYPE TABLENAMETYPE IS TABLE OF VARCHAR2(30) INDEX BY BINARY_INTEGER;

  L_TABLENAMETYPE TABLENAMETYPE;

BEGIN

  --YOU CAN USE THIS L_TABLENAMETYPE TYPE HERE

  L_TABLENAMETYPE(1) := 'AB';

  L_TABLENAMETYPE(2) := 'ABC';

  L_TABLENAMETYPE(3) := 'ABD';

  L_TABLENAMETYPE(4) := 'ABE';

  FOR LDX IN 1 .. L_TABLENAMETYPE.COUNT

 

   LOOP

 

    DBMS_OUTPUT.PUT_LINE(L_TABLENAMETYPE(LDX));

 

  END LOOP;

  ---DELETE ALL VALUES

  L_TABLENAMETYPE.DELETE;

END;

--RESULT

AB

ABC

ABD

ABE

---USE TABLE TYPE WITH BULK COLLECT INTO

DECLARE

CURSOR C IS

  SELECT * FROM EMP;

TYPE ANY_TABLE_TYPE IS TABLE OF EMP%ROWTYPE INDEX BY BINARY_INTEGER;

EMP_REC ANY_TABLE_TYPE;

BEGIN

  OPEN C;

  FETCH C BULK COLLECT

 

    INTO EMP_REC;

  CLOSE C;

  FORALL I IN EMP_REC.FIRST .. EMP_REC.LAST

 

    UPDATE EMP

   

       SET COMM = EMP_REC(I).SAL * 10 / 100

   

     WHERE EMPNO = EMP_REC(I).EMPNO;

  COMMIT;

END;

Perform Dynamic DLL in Oracle

EXECUTE IMMEDIATE statement can be used to execute dynamic SQL statements.

Syntax: EXECUTE IMMEDIATE 'User_Code';

--

-- Create/Drop Table using this PLSQL Script or Procedure

-- DLL Script

-- by mfaisal 02-Jan-2020

Declare

---Create

begin

  execute immediate 'CREATE TABLE X_DDL_ON_APPS (APPS_ID NUMBER)';

end;

Declare

--Drop with Oracle EBS Package

begin

  system.ad_apps_private.do_apps_ddl(schema_name => 'APPS',

                                     ddl_text => 'DROP TABLE X_DDL_ON_APPS ');

end;