HP Nonstop SQLMX (SPJ) Stored Procedure in Javas Getting Started

Stored Procedure in Java (SPJ)

HP Nonstop SQLMX, we can code Java program and regist it as a DB Stored Procedure, and then calling it. SPJ is a stored procedure whose body is a static Java method. The body is known as an SPJ method.

 

1. install JDK JDBC ....... onto oss evn;

2. create a class, the fuction must be "static", becuase we can access the method in the class without instantiate.

1. publicclassHelloWorld{
2.     publicstaticvoid testFunc(int a,int b,String[] tst,int[] bigger){
3.  
4.         if(a > b)
5.            bigger[0]= a;
6.         else
7.            bigger[0]= b;
8.  
9.         tst[0]="The bigger one is: ";
10.     }
11. }

 

3. FTP the .java file onto oss;

4. compile it with javac command;

5. Regist, To register SPJs into MX,
    You must be either the schema owner or the super ID. Run below script in mxci to reigist the stored procedure.

1. >>?SECTION "CREATE ENDER SPJs"
2. >>CREATE PROCEDURE sos.ecui.testFunc(IN param_a INT, IN param_b INT, OUT tst VARCHAR(20), OUT bigger INT)
3. +>EXTERNAL NAME 'HelloWorld.testFunc'
4. +>EXTERNAL PATH '/home/ecui/java/test'
5. +>LANGUAGE JAVA
6. +>PARAMETER STYLE JAVA
7. +>MODIFIES SQL DATA;
8.  
9. --- SQL operation complete.
10.  
11. >> SHOWDDL SOS.ECUI.TESTFUNC;
12.  
13. CREATE PROCEDURE SOS.ECUI.TESTFUNC
14.   (
15.     IN PARAM_A INTEGER
16.   , IN PARAM_B INTEGER
17.   , OUT TST VARCHAR(20) CHARACTER SET ISO88591
18.   , OUT BIGGER INTEGER
19.   )
20.   EXTERNAL NAME 'HelloWorld.testFunc (int,int,java.lang.String[],int[])'
21.   EXTERNAL PATH '/home/ecui/java/test'
22.   LOCATION P3DEV.$DATA01.ZSDZSGJ5.MKN46G00
23.   LANGUAGE JAVA
24.   PARAMETER STYLE JAVA
25.   MODIFIES SQL DATA
26.   DYNAMIC RESULT SETS 0
27.   NOT DETERMINISTIC
28.   ISOLATE
29.   ;
30.  
31. --- SQL operation complete.

 

6. Grant privileges for invoking the SPJs to other users.

7. Call (or invoke) the SPJs in SQL/MX.

 

1. >>CALL sos.ecui.testFunc(2,4,?,?);
2.  
3. TST                   BIGGER
4. --------------------  -----------
5.  
6. The bigger one is:              4
7.  
8. --- SQL operation complete.
9. >>CALL sos.ecui.testFunc(20,4,?,?);
10.  
11. TST                   BIGGER
12. --------------------  -----------
13.  
14. The bigger one is:             20
15.  
16. --- SQL operation complete.

 

8. delete this SPJ,

1. >>DROP procedure SOS.ECUI.TESTFUNC;
2.  
3. --- SQL operation complete.

 

 

来自为知笔记(Wiz)