Calling method validator from EO to another EO

Hi, I am usning JDEV 11.1.16.0
I have two EOs Person and PersonJob
there is an association created PersonEOTOPersonJob
In my PersonJobEO I have a method validator which calls a method in my PersonJobEOImpl.java where i am doing some validation.
Now the problem is that when I am trying to modify one attribute in my PersonEO and not modifying anything in PersonJobEO, I need the call the same method validator from PersonJObEO.
I don't want to make my PersonJobEO row dirty just to call the method validator in PersonJobEO.
Is there a way to call the PersonJobEo method validator whenever my PersonEo becomes dirty or a particular attribute, say person status is update
I have tried below code which did not help me
public void validatePersonJobEntity(){
RowIterator relationsRows = getPersonJobEO();
EntityImpl relEntityRow;
while(relationsRows.hasNext()){
relEntityRow = (EntityImpl)relationsRows.next();
relEntityRow.validateEntity();
}

Hi ,
Let me try to explain more clearly with an example
In PersonEO I have an attribute called status, which is an LOV and accepts values "active" and "inactive"
In PersonJObEO I have a method validator named ValidateDuplicateRowbyDate(), which checks for duplicate jobs based on start, end date for "active" persons.
I have given the definition for ValidateDuplicateRowbyDate in my PersonJobEOImpl.java
eg
class PersonJobEOImpl{
//other code
public void ValidateDuplicateRowbyDate(Arraylist ctx){
//Logic to check for duplicate jobs based on start and end date for active Person
As per the above logic duplicates are allowed for inactive user.
Now when someone updates the inactive status to active for a person without touching the PersonJob data. I need to fire same validation.
The PersonJobEo validation is not fired as it is not dirty. I need to call the PersonJobEO validation whenever personStatus is updated
eg.
Scenario 1
PersonEO
Person_id person_name status
1001 John active
PersonJobEO
JobId person_id Job_name start_date end_date
2001 1001 Sales 5/4/2010 5/10/2011
2002 1002 Service 5/4/2010 5/10/2011(This is invalid two rows with same start and end date is not allowed)
Scenario 2
PersonEO
Person_id person_name status
1002 SAM inactive
PersonJobEO
JobId person_id Job_name start_date end_date
2003 1001 Sales 5/4/2010 5/10/2011
2004 1002 Service 5/4/2010 5/10/2011(allowed as person status is in active)
Scenario 3
When status for person_id 1002(SAM) is updated to active from inactive i need to perform the validation on PersonJobEO and i should not allow the status to be updated
here i want to trigger validation ValidateDuplicateRowbyDate in PersonJobEO

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Unable to call a procedure from inside a another procedure

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I am trying to call a procedure from inside an another procedure.Both the procedures are present within the same package.I am trying to call the second procedure just before the end of the first procedure.Both the procedures are compiling fine but the tables are not getting populated inside the second procedure.Also the DBMS_OUTPUT statements present in second procedures are not getting displayed.(I feel the second procedured is not getting called).
The package specification is as follows:
CREATE OR REPLACE package ANVESH.conv_api_pkg
is
    PROCEDURE PROC_CONVERSION_API(FILE_PATH IN VARCHAR2,FILE_NAME IN VARCHAR2) ;
    TYPE cts_order_details IS TABLE OF XXCTS_ORDER_DETAILS_STG%ROWTYPE;
    PROCEDURE proc_conversion_api2(p_orderdetails IN cts_order_details) ;
end conv_api_pkg;The package body is as follows:
CREATE OR REPLACE package body ANVESH.conv_api_pkg
is
PROCEDURE PROC_CONVERSION_API(FILE_PATH IN VARCHAR2,FILE_NAME IN VARCHAR2)
IS
    v_file_type utl_file.file_type;
    v_buffer VARCHAR2(1000);
    V_CUSTOMER_NAME VARCHAR2(100);
    V_MANUFACTURER VARCHAR2(100);
    V_PRODUCT_NAME VARCHAR2(100);
    V_QUANTITY NUMBER;
    V_REQ_SHIP_DATE DATE;
    V_REQ_PRICE NUMBER;
    V_LOG_FILE utl_file.file_type;
    V_COUNT_CUST NUMBER;
    V_COUNT_PROD NUMBER;
   L_ORDER_LINES CONV_API_PKG.cts_order_details:=CONV_API_PKG.cts_order_details();
BEGIN
    DBMS_OUTPUT.PUT_LINE('Inside begin 1');
    v_file_type := UTL_FILE.fopen(FILE_PATH, FILE_NAME, 'r',null);
        DBMS_OUTPUT.PUT_LINE('Inside begin 1.1');
    LOOP
        BEGIN
                    DBMS_OUTPUT.PUT_LINE('Inside begin 2');
                     UTL_FILE.GET_LINE (v_file_type,v_buffer);
                    DBMS_OUTPUT.PUT_LINE('Inside begin 2.1');
                    DBMS_OUTPUT.PUT_LINE('the buffer is '||v_buffer);
                    DBMS_OUTPUT.PUT_LINE('the length of buffer is '||length(v_buffer));
                     V_CUSTOMER_NAME := trim(substr(v_buffer, 1, 30));
                     DBMS_OUTPUT.PUT_LINE('Customer Name is '||V_CUSTOMER_NAME);
                     V_MANUFACTURER := trim(substr(v_buffer, 31, 40));
                     DBMS_OUTPUT.PUT_LINE('Manufacturer is '||V_MANUFACTURER);
                     V_PRODUCT_NAME := trim(substr(v_buffer, 71, 20));
                     DBMS_OUTPUT.PUT_LINE('Product Name is '||V_PRODUCT_NAME);
                     V_QUANTITY      := to_number(trim(substr(v_buffer, 91, 5)));
                     DBMS_OUTPUT.PUT_LINE('Quantity is '||V_QUANTITY);
                     V_REQ_SHIP_DATE     := to_date(trim(substr(v_buffer, 96, 20)), 'DD-MON-YYYY');
                     DBMS_OUTPUT.PUT_LINE('Requested Ship Date is '|| V_REQ_SHIP_DATE);
                    V_REQ_PRICE        :=nvl(substr( trim(v_buffer), 116, length(v_buffer)-116),0);
                    --DBMS_OUTPUT.PUT_LINE('Requested Price is1 '||substr(v_buffer, 116, 5));
                    DBMS_OUTPUT.PUT_LINE('The requested price is '||V_REQ_PRICE);
            V_LOG_FILE := UTL_FILE.FOPEN(FILE_PATH, 'LOG_FILE.dat', 'A');
                IF (V_QUANTITY > 0)
                 THEN
                 DBMS_OUTPUT.PUT_LINE('The quantity is '||V_QUANTITY);
                   SELECT COUNT (*)
                   INTO V_COUNT_CUST
                   FROM CONVERSION_CUSTOMERS
                   WHERE CUSTOMER_NAME = V_CUSTOMER_NAME;
                   DBMS_OUTPUT.PUT_LINE('The Customer count is '||V_COUNT_CUST);
                   IF(V_COUNT_CUST > 0)
                   THEN
                       SELECT COUNT(*)
                       INTO V_COUNT_PROD
                       FROM conversion_products
                       WHERE PRODUCT_NAME = V_PRODUCT_NAME;
                       DBMS_OUTPUT.PUT_LINE('The Product count is '||V_COUNT_PROD);
                      IF(V_COUNT_PROD >0)
                       THEN
                            INSERT INTO XXCTS_ORDER_DETAILS_STG VALUES (V_CUSTOMER_NAME, V_PRODUCT_NAME, V_MANUFACTURER, V_QUANTITY, V_REQ_SHIP_DATE, V_REQ_PRICE, 'ACTIVE', 'ORDER TAKEN');
                       ELSE
                            DBMS_OUTPUT.PUT_LINE('PRODUCT SHOULD BE VALID');
                            UTL_FILE.PUT_LINE(V_LOG_FILE, 'PRODUCT SHOULD BE VALID');
                       END IF;
                   ELSE
                      DBMS_OUTPUT.PUT_LINE('CUSTOMER SHOULD BE VALID');
                      UTL_FILE.PUT_LINE(V_LOG_FILE, 'CUSTOMER SHOULD BE VALID');
                   END IF;
                ELSE
                    DBMS_OUTPUT.PUT_LINE('QUANTITY SHOULD BE VALID');
                    UTL_FILE.PUT_LINE(V_LOG_FILE, 'QUANTITY SHOULD BE VALID');
                END IF;
                EXCEPTION
                WHEN NO_DATA_FOUND THEN
                    EXIT;
                END;
    END LOOP;
SELECT CUSTOMER_NAME, PRODUCT_NAME, MANUFACTURER, QUANTITY, REQUESTED_SHIP_DATE, REQUESTED_PRICE, STATUS,MESSAGE
BULK COLLECT
INTO L_ORDER_LINES
FROM XXCTS_ORDER_DETAILS_STG;
DBMS_OUTPUT.PUT_LINE('values inserted');
proc_conversion_api2(p_orderdetails=>L_ORDER_LINES);
END;
PROCEDURE proc_conversion_api2(p_orderdetails IN cts_order_details)
IS
V_AVL_QUANTITY CONVERSION_PRODUCTS.AVL_QUANTITY%TYPE;
V_REQ_SHIP_DATE DATE;
V_LIST_PRICE CONVERSION_PRODUCTS.LIST_PRICE%TYPE;
V_NET_PRICE CONVERSION_PRODUCTS.LIST_PRICE%TYPE;
V_NET CONVERSION_PRODUCTS.LIST_PRICE%TYPE;
V_EXTN_PRICE CONVERSION_PRODUCTS.LIST_PRICE%TYPE;
V_CUST_DISC CONVERSION_CUSTOMERS.DISCOUNT%TYPE;
V_CERT_DISC CONVERSION_CERTIFICATION.DISCOUNT%TYPE;
V_CUST_ID XXCTS_ORDER_DETAILS.CUSTOMER_ID%TYPE;
V_PROD_ID XXCTS_ORDER_DETAILS.PRODUCT_ID%TYPE;
V_DISC_PRICE CONVERSION_PRODUCTS.LIST_PRICE%TYPE;
V_DISC_NAME CONVERSION_CERTIFICATION.CERTIFICATION%TYPE;
V_TOTAL_DISC_AMT NUMBER;
V_TOTAL_DISC NUMBER;
V_LIMIT NUMBER;
BEGIN
    DBMS_OUTPUT.PUT_LINE('INSIDE API_2 BEGIN 1');
        FOR i IN p_orderdetails.FIRST..p_orderdetails.LAST
        LOOP
             BEGIN
            DBMS_OUTPUT.PUT_LINE('INSIDE API_2 BEGIN 2');
            SELECT PRODUCT_ID,AVL_QUANTITY,LIST_PRICE
            INTO V_PROD_ID,V_AVL_QUANTITY,V_LIST_PRICE
            FROM CONVERSION_PRODUCTS
            WHERE PRODUCT_NAME=p_orderdetails(i).PRODUCT_NAME;
            DBMS_OUTPUT.PUT_LINE('PRODUCT QUANTITY is '||V_PROD_ID);
            DBMS_OUTPUT.PUT_LINE('AVAILABLE QUANTITY is '||V_AVL_QUANTITY);
            DBMS_OUTPUT.PUT_LINE('LIST PRICE is '||V_LIST_PRICE);
            SELECT CUSTOMER_ID,NVL(DISCOUNT,0)
            INTO V_CUST_ID,V_CUST_DISC
            FROM CONVERSION_CUSTOMERS
            WHERE CUSTOMER_NAME=p_orderdetails(i).CUSTOMER_NAME;
            DBMS_OUTPUT.PUT_LINE('CUSTOMER ID is '||V_CUST_ID);
            DBMS_OUTPUT.PUT_LINE('CUSTOMER DISCOUNT IS '||V_CUST_DISC);
            SELECT A.DISCOUNT,A.CERTIFICATION
            INTO V_CERT_DISC,V_DISC_NAME
            FROM CONVERSION_CERTIFICATION A,CONVERSION_CUSTOMERS B
            WHERE A.CERTIFICATION=B.CERTIFICATION(+)
            AND B.CUSTOMER_NAME=p_orderdetails(i).CUSTOMER_NAME;
            DBMS_OUTPUT.PUT_LINE('CERTIFICATION DISCOUNT IS '||V_CERT_DISC);
            V_NET:=((V_LIST_PRICE)-(V_LIST_PRICE)*(V_CERT_DISC)/100);
            DBMS_OUTPUT.PUT_LINE('NET PRICE AFTER CERTIFICATION DISCOUNT IS '||V_NET);
            V_NET_PRICE:=((V_NET)-(V_NET)*(V_CUST_DISC)/100);
            DBMS_OUTPUT.PUT_LINE('NET PRICE AFTER COMPLETE DISCOUNT IS '||V_NET_PRICE);
            V_EXTN_PRICE:=(V_NET_PRICE)*(p_orderdetails(i).QUANTITY);
            DBMS_OUTPUT.PUT_LINE('EXTENDED PRICE IS '||V_EXTN_PRICE);
            V_TOTAL_DISC:=((V_CERT_DISC)/100+(V_CUST_DISC)/100);
            DBMS_OUTPUT.PUT_LINE('TOTAL DISCOUNT IS '|| V_TOTAL_DISC);
            V_TOTAL_DISC_AMT:=(V_LIST_PRICE)-(V_NET_PRICE);
            DBMS_OUTPUT.PUT_LINE('TOTAL DISCOUNT PRICE IS '|| V_TOTAL_DISC_AMT);
            SELECT MAX(A.LIMIT)
            INTO V_LIMIT
            FROM CONVERSION_CERTIFICATION A,CONVERSION_CUSTOMERS B
            WHERE A.CERTIFICATION=B.CERTIFICATION(+)
            AND B.CUSTOMER_NAME=p_orderdetails(i).CUSTOMER_NAME;
            IF p_orderdetails(i).QUANTITY<V_AVL_QUANTITY THEN
            INSERT INTO XXCTS_ORDER_DETAILS VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,V_CUST_ID,V_PROD_ID,p_orderdetails(i).QUANTITY,p_orderdetails(i).REQUESTED_SHIP_DATE,p_orderdetails(i).REQUESTED_PRICE,V_LIST_PRICE,V_TOTAL_DISC,V_NET_PRICE,V_EXTN_PRICE,'QTY HOLD','REQ QNTY LESS THAN AVL QTY',SYSDATE);
            INSERT INTO xxcts_order_discounts VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,SEQ_DISCOUNT_ID.NEXTVAL,V_DISC_NAME,V_TOTAL_DISC_AMT);
            END IF;
            IF p_orderdetails(i).REQUESTED_SHIP_DATE<SYSDATE THEN
            INSERT INTO XXCTS_ORDER_DETAILS VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,V_CUST_ID,V_PROD_ID,p_orderdetails(i).QUANTITY,p_orderdetails(i).REQUESTED_SHIP_DATE,p_orderdetails(i).REQUESTED_PRICE,V_LIST_PRICE,V_TOTAL_DISC,V_NET_PRICE,V_EXTN_PRICE,'DATE HOLD','SHIPDATE CANNOT BE LESS THAN CURR DATE',SYSDATE);
            INSERT INTO xxcts_order_discounts VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,SEQ_DISCOUNT_ID.NEXTVAL,V_DISC_NAME,V_TOTAL_DISC_AMT);
            END IF;
            IF V_NET_PRICE>p_orderdetails(i).REQUESTED_PRICE THEN
            INSERT INTO XXCTS_ORDER_DETAILS VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,V_CUST_ID,V_PROD_ID,p_orderdetails(i).QUANTITY,p_orderdetails(i).REQUESTED_SHIP_DATE,p_orderdetails(i).REQUESTED_PRICE,V_LIST_PRICE,V_TOTAL_DISC,V_NET_PRICE,V_EXTN_PRICE,'PRICE HOLD','NET PRICE CANNOT BE MORE THAN REQ PRICE',SYSDATE);
            INSERT INTO xxcts_order_discounts VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,SEQ_DISCOUNT_ID.NEXTVAL,V_DISC_NAME,V_TOTAL_DISC_AMT);
            END IF;
           /* IF V_LIMIT<p_orderdetails(i).REQUESTED_PRICE THEN
            INSERT INTO XXCTS_ORDER_DETAILS VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,V_CUST_ID,V_PROD_ID,p_orderdetails(i).QUANTITY,p_orderdetails(i).REQUESTED_SHIP_DATE,p_orderdetails(i).REQUESTED_PRICE,V_LIST_PRICE,V_TOTAL_DISC,V_NET_PRICE,V_EXTN_PRICE,'ORDER LIMIT HOLD','PRICE CANNOT EXCEED ORDER LIMIT',SYSDATE);
            INSERT INTO xxcts_order_discounts VALUES(SEQ_HEADER_ID.NEXTVAL,SEQ_LINE_ID.NEXTVAL,SEQ_DISCOUNT_ID.NEXTVAL,V_DISC_NAME,V_TOTAL_DISC_AMT);
            END IF;*/
            EXCEPTION
            WHEN NO_DATA_FOUND THEN
            DBMS_OUTPUT.PUT_LINE(' INSIDE EXCEPTION BLOCK');
            END;
        END LOOP;
END;
end conv_api_pkg;
/the pl/sql block to invoke the the procedure :
declare
begin
PROC_CONVERSION_API('/usr/tmp' ,'Walmart_Orders_062908.dat');
end;please let me know what is wrong in the program.
Thanks
Anvesh

Hi Walter
Yes 'Inside begin 1' and 'Inside begin 2' were printed.Please find the the DBMS_OUTPUT statements that were printed.
Inside begin 1
Inside begin 1.1
Inside begin 2
Inside begin 2.1
the buffer is BESTBUY                       SONY ERICSSON                           W580i               25   1-AUG-2008          50
the length of buffer is 118
Customer Name is BESTBUY
Manufacturer is SONY ERICSSON
Product Name is W580i
Quantity is 25
Requested Ship Date is 01-AUG-08
The requested price is 50
The quantity is 25
The Customer count is 1
The Product count is 0
PRODUCT SHOULD BE VALID
Inside begin 2
Inside begin 2.1
the buffer is BESTBUY                       SAMSUNG                                 BLACKJACK           50   15-JUL-2008         150
the length of buffer is 119
Customer Name is BESTBUY
Manufacturer is SAMSUNG
Product Name is BLACKJACK
Quantity is 50
Requested Ship Date is 15-JUL-08
The requested price is 150
The quantity is 50
The Customer count is 1
The Product count is 1
Inside begin 2
Inside begin 2.1
the buffer is BESTBUY                       APPLE                                   IPHONE 4GB          50   15-JUL-2008
the length of buffer is 116
Customer Name is BESTBUY
Manufacturer is APPLE
Product Name is IPHONE 4GB
Quantity is 50
Requested Ship Date is 15-JUL-08
The requested price is 0
The quantity is 50
The Customer count is 1
The Product count is 1
Inside begin 2
Inside begin 2.1
the buffer is BESTBUY                       ATT                                     TILT                100 15-JUN-2008
the length of buffer is 116
Customer Name is BESTBUY
Manufacturer is ATT
Product Name is TILT
Quantity is 100
Requested Ship Date is 15-JUN-08
The requested price is 0
The quantity is 100
The Customer count is 1
The Product count is 1
Inside begin 2
Inside begin 2.1
the buffer is BESTBUY                       NOKIA                                   N73                 50   15-JUL-2008         200
the length of buffer is 118
Customer Name is BESTBUY
Manufacturer is NOKIA
Product Name is N73
Quantity is 50
Requested Ship Date is 15-JUL-08
The requested price is 20
The quantity is 50
The Customer count is 1
The Product count is 0
PRODUCT SHOULD BE VALID
Inside begin 2In the first procedure I am trying to read the data from a flat file and store it in a table.Here is the sample data from the flat file.
BESTBUY                       SONY ERICSSON                           W580i               25   1-AUG-2008          50
BESTBUY                       SAMSUNG                                 BLACKJACK           50   15-JUL-2008         150
BESTBUY                       APPLE                                   IPHONE 4GB          50   15-JUL-2008
BESTBUY                       ATT                                     TILT                100 15-JUN-2008
BESTBUY                       NOKIA                                   N73                 50   15-JUL-2008         200When tried to execute the second procedure independently using the PL/SQL block,the tables in second procedure were populated and the DBMS_Output statements were also displayed.I have made use of the same query in that case
Thanks
Anvesh
Edited by: Anvesh Reddy on Dec 23, 2008 12:40 PM

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     {"Alan", "Chung", "Green", new Integer(838), new Boolean(false)},
     {"Jeff", "Dinkins", "Turquois", new Integer(8), new Boolean(true)},
     {"Amy", "Fowler", "Yellow", new Integer(3), new Boolean(false)},
     {"Brian", "Gerhold", "Green", new Integer(0), new Boolean(false)},
     {"James", "Gosling", "Pink", new Integer(21), new Boolean(false)},
     {"David", "Karlton", "Red", new Integer(1), new Boolean(false)},
     {"Dave", "Kloba", "Yellow", new Integer(14), new Boolean(false)},
     {"Peter", "Korn", "Purple", new Integer(12), new Boolean(false)},
     {"Phil", "Milne", "Purple", new Integer(3), new Boolean(false)},
     {"Dave", "Moore", "Green", new Integer(88), new Boolean(false)},
     {"Hans", "Muller", "Maroon", new Integer(5), new Boolean(false)},
     {"Rick", "Levenson", "Blue", new Integer(2), new Boolean(false)},
     {"Tim", "Prinzing", "Blue", new Integer(22), new Boolean(false)},
     {"Chester", "Rose", "Black", new Integer(0), new Boolean(false)},
     {"Ray", "Ryan", "Gray", new Integer(77), new Boolean(false)},
     {"Georges", "Saab", "Red", new Integer(4), new Boolean(false)},
     {"Willie", "Walker", "Phthalo Blue", new Integer(4), new Boolean(false)},
     {"Kathy", "Walrath", "Blue", new Integer(8), new Boolean(false)},
     {"Arnaud", "Weber", "Green", new Integer(44), new Boolean(false)}
// Create a model of the data.
TableModel dataModel = new AbstractTableModel() {
// These methods always need to be implemented.
public int getColumnCount() { return names.length; }
public int getRowCount() { return data.length;}
public Object getValueAt(int row, int col) {return data[row][col];}
// The default implementations of these methods in
// AbstractTableModel would work, but we can refine them.
public String getColumnName(int column) {return names[column];}
public Class getColumnClass(int col) {return getValueAt(0,col).getClass();}
public boolean isCellEditable(int row, int col) {return (col==4);}
public void setValueAt(Object aValue, int row, int column) {
data[row][column] = aValue;
};

Calling a controller from the method "Do_request" of another controller

Dear Friends.
How are you? I am trying to call processForm.do controller from another controller's do_request method.. i dont want to use or assign view. i m not using view. more-over i need to pass certain values to another controller... will it possible for me to do that.. please reply me... your any help will be appreciated..
Thanking you
Regards
Naeem

Hi Naeem,
We are using the standard class cl_hrrcf_application_ctrl to retrieve the parameters. We have to pass the parameters which are need to pass from one controller to other controller. In the do_initattributes of receiving controller have to write the following code.
DATA lo_appl_ctrl TYPE REF TO cl_hrrcf_application_ctrl.
lo_appl_ctrl = get_application_ctrl( ).
      CALL METHOD lo_appl_ctrl->global_context->get_params
        IMPORTING
          p_hrobject      = ls_hrobject
          p_req_hrobject = ls_req_hrobject
          p_cdcy_hrobject = ls_cdcy_hrobject
          p_act_guid      = l_act_guid.
I think this can be use for erec applications. Like this we can create a class & get the parameters.
Hope this wil Helpful.
Thanks & Regards,
Anita Vizhi Arasi B

Is there any way to call methods of one view from another

Hi experts,
I am new to webdynpro.I am having some requirement in which I need to call methods of one view from some other view of same component .So is there any way to do this.

Dear Pradeep,
This will solve your problem......( plz 1st read everything ..)
There are 2 views :
i) Mandatory Attributes ' view(V1)
ii) Button' s View..(V2)
1. Create a method in Component Controller.( M1).
2. Goto V2 . In the Action Handler method of Button , call method M1 of component controller.
3. Write your Code in M1 instead of V2 method.
4. Create an EVENT ( E1 ) in component controller.
5. Fire this event from M1 before executing Action Code.
6. Now Add the event handler method of E1 in V1 ( i.e. Mandatory attributes view. ) ..........clear????? .. set "METHOD TYPE" = Event Handler. instead of Method.
7. In this event handler method in V1 , write the "check_mandatory_attribute_view" method.
8. use necessary flags..
Regards ,
Aditya.

How to call a servlet from another servlet

hi everybody,
i have a problem, i have to call one servlet from another one.
Everything works on my pc, but when i install the application on the customer's server i got an error about an Uknown URL followed by the name of the machine.
Wjat i do is the folloqing :
String urlString = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+"/"+servletName;
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
the variable servletName is the name of the servlet i have to call.
Is there another way to call the servlet ?
All the servlet are installed in the same server.
Any suggestion ?
Cheers.
Stefano

Sweep is correct about requestDispatcher being another approach for inter-servlet delegation; the only issue that i recall with this approach is that it defaults the method of the destination servlet to the one it was called from...for example, calling servlet2 from within servlet1.post() resulted in the dispatcher attempting to utilize servlet2.post() - i believe that i searched for a parameterize solution to no avail :( (ended up handling the request by placing a "fake" doPost() in servlet2 that simply called servlet2.doGet())
however, if your application is functioning correctly on your pc/webserver then the problem may be external to servlet communication (e.g. client webserver's ports not configured or blocked, missing runtime classes, etc.)
my suggestion would be to set aside the programmatic concerns for the moment - what is the response if you open a browser on a client's machine and access the URL in question (i.e. http://clientserver:port/stefanoServlet)? If it will not respond to access in this manner then it certainly won't when your application calls for it.
It's possible that there is a coding error but, given the info supplied, i'd start examining the environment, first. Let us know if you have any luck with the test i recommended or not (please provide abundant detail). Or, if you've found the solution then you may want to post back with a quick blub so the next person knows how to escape the trap.
D

Calling a method within a class form another class(ViewController)

I am creating an SQL project in XCODE. I have one view. My main view controller is loading the database to a table/array. I want to add another class (with no NIB) just to handle the display of the table in a UITableView. So, I added a skeleton cocoa touch class file to my classes folder to handle this function when parameters change.
So, in my app delegate, the "applicationdidFinishLaunchingWithOptions" method loads my mainViewController and NIB. On the "viewDidLoad" method in my mainViewController, I read a URL into an SQLite database and close the database. Herein lies the problem: I want to call my new class (TableViewHandler) and pass it the array created in the mainViewController and use the array to populate the UITable.
How do I call a class from within another class (which has no NIB) to populate the table? Especially if my TableViewHandler has no "viewDidLoad", "viewDidAppear", etc.
Regads,
-Kevin

This is what my exact problem.
i've created a bean (DataBean) to access the database. i'm having a servlet program (ShopBook). now to check some details over there in the database from the servlet i'm in need to use a method in the DataBean.
both ShopBook.java and DataBean.java lies in the package shoppack.
in ShopBook i tried to instantiate the object to DataBean as
DataBean db = new DataBean();
it shows the compiler error, unable to resolve symbol DataBean.
note:
first i compiled DataBean.java, it got compiled perfectly and the class file resides inside the shoppack.
when i'm trying to compile the ShopBook its telling this error.
hope i'm clear in explaining my problem. can u please help me?
thank u in advance.
regards,
Fazli

Calling a function from another class - help!

I realize that this is probably a basic thing for people who have been working with JavaFX for a while, but it is eluding me, and I have been working on it for over a week.
I need to call a function that is in another class. Here's the deal. In EntryDisplayController.java, there are 2 possible passwords that can be accepted - one will give full access to the car, the second will limit functions on the car. So when a password is entered and verified as to which one it is, I need to call a function in MainDisplayController.java to set a variable that will let the system know which password is being used - full or restricted.
So in MainDisplayController.java I have this snippet to see
public class MainDisplayController implements Initializable, ControlledScreen {
    ScreensController myController;
    public static char restrict;
     * Initializes the controller class.
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO
    public void setRestriction(){
        restrict = 0;
        restrictLabel.setText("RESTRICTED");
    public void clearRestriction(){
        restrict = 1;
        restrictLabel.setText("");
And in EntryScreenDisplay.java I have this snippet:
public class EntryDisplayController implements Initializable, ControlledScreen {
     @FXML
    private Label passwordLabel ;
    static String password = new String();
    static String pwd = new String("");
     ScreensController myController;
     private MainDisplayController controller2;
     * Initializes the controller class.
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        setPW(pwd);    // TODO
     @FXML
    private void goToMainDisplay(ActionEvent event){
        if(password.equals ("123456")){
          controller2.clearRestriction();
           myController.setScreen(ScreensFramework.MainDisplayID);
           pwd = "";
           password = "";
           setPW(pwd);
        else if(password.equals ("123457")){
           controller2.setRestriction();
            myController.setScreen(ScreensFramework.MainDisplayID);
           pwd = "";
           password = "";
           setPW(pwd);
        else{
            password = "";
            pwd = "";
            setPW(pwd);
When I enter the restricted (or full) password, I get a long list of errors, ending with
Caused by: java.lang.NullPointerException
at velocesdisplay.EntryDisplayController.goToMainDisplay(EntryDisplayController.java:60)
Line 60 is where "controller2.setRestriction(); is.
As always, thanks for any help.
Kind regards,
David

You never set the controller2 variable to anything, which is why you get a null pointer exception when you try to reference it.
public static variables (and even singletons) are rarely a good idea as they introduce global state (sometimes they can be, but usually not).
If a static recorder like this can only have a binary value, use a boolean, if it can have multiple values, use an enum.
Some of the data sharing solutions in dependency injection - Passing Parameters JavaFX FXML - Stack Overflow might be more appropriate.
I also created a small framework for roll based solutions in JavaFX which perhaps might be useful:
http://stackoverflow.com/questions/19666982/is-there-a-way-to-implement-a-property-like-rendered-on-javafx
https://gist.github.com/jewelsea/7229260
It was just something I hacked together, so it's not a fully polished solution and you probably don't need something quite so complex.
What you need is a model class shared between the components of your application. Dependency injection frameworks such as afterburner.fx can help achieve this in a fairly simple to use way.
If you don't want to go with a dependency injection framework, then you could use either a static singleton model class for your settings or pass the model class using the mechanism in defined in the passing parameters link I provided. For a model class example, see the ClickCounter class from this example.   That example doesn't use FXML, but to put it together with the passing parameters solution, for your restriction model, you would have something like the following:
   private class Restricted {
     private final ReadOnlyBooleanWrapper restricted;
     public Restricted(boolen isRestricted) {
       restricted = new ReadOnlyBooleanWrapper(isRestricted);
     public boolean isRestricted() {
       return restricted.get();
     public ReadOnlyBooleanProperty restrictedProperty() {
       return restricted.getReadOnlyProperty();
Then in your EntryDisplayController you have:
@FXML
public void goToMainDisplay(ActionEvent event) {
     // determine the restriction model as per your original code...
     RestictionModel restrictionModel = new RestrictionModel(<appropriate value>);
FXMLLoader loader = new FXMLLoader(
getClass().getResource(
   "mainDisplay.fxml"
Stage stage = new Stage(StageStyle.DECORATED);
stage.setScene(
   new Scene(
     (Pane) loader.load()
MainDisplayController controller =
    loader.<MainDisplayController>getController();
controller.initRestrictionModel(restrictionModel);
stage.show();
class MainDisplayController() {
@FXML private RestrictionModel restrictionModel;
@FXML private RestrictLabel restrictLabel;
public void initialize() {}
// naming convention (if the restriction model should only be set once per controller, call the method init, otherwise call it set).
public void initRestrictionModel(RestrictionModel restrictionModel) {
    this.restrictionModel = restrictionModel;
     // take some action based on the new restriction model, for example
    restrictLabel.textProperty.bind(
      restrictionModel.restrictedProperty().asString()
If you have a centralized controller for your navigation and instantiation of your FXML (like in this small FXML navigation framework), then you can handle the setting of restrictions on new screens centrally within the framework at the point where it loads up FXML or navigates to a screen (it seems like you might already have something like this with your ScreensController class).
If you do this kind of stuff a lot, then you would probably benefit from a move to a framework like afterburner. If it is just a few times within your application, then perhaps something like the above outline will give you enough guidance to implement a custom solution.

Calling DB connection from another class

Hi I am trying to create a method in another class to call another method that checks for userid in DB? What is the best way to set this up? I.e. calling method?
//calling method below line
private boolean setuserExist(String username) {
     else return false;
public String getserExist() {
          return userexist;
// Method being called below this line
public boolean userExist(String username){
          boolean exist = false;
          System.out.println("in LoginDBAccess: username is " + username);
          try{
Connection conn = dbc.getConnection();
Statement statement = conn.createStatement();
String query =      "SELECT User.UserID " +
                    "FROM User " +
                    "WHERE User.UserID = '" + username + "'";
ResultSet resultSet = statement.executeQuery(query);
System.out.println("1.1");
ArrayList result = new ArrayList();
while(resultSet.next()){
     //System.out.println("In While:");
ArrayList item = new ArrayList();
item.add(resultSet.getString("UserID"));
result.add(item);
System.out.println("LoginDBAccess Count: " + result.size());
conn.close();
if (result.size() == 1){
     exist = true;
          }catch(Exception e){
     e.printStackTrace();
          return exist;
     }

Cross-post
http://forum.java.sun.com/thread.jspa?threadID=603496

Calling infobus form from another.

Hi
Here is a brief description of the problem.
A simple data form is created using JDeveloper2.0's wizard. It is an Infobus based dataframe,which has a simple gridcontrol fetching data from the dept table. This form is in the pacakge,
package1.
Another form is made with a master detail relationship between dept and employee table, in the package, package2.
Now a button control is added on the first form( which is in package1) and the following code is added to the actionperformed event.
void buttonControl1_actionPerformed(ActionEvent e) {
Frame f = new package2.Frame1();
f.show();
Essentially, it calls the form in package2 when the button is pressed. Once this action is performed, the login dialog box of the form in package2 appears. After which it throws the following error and shows a blank form.
DAC-405: SessionInfo: Application module creation failed; className: ConnectionTrade
JBO-00200: A Generic exception occurred during loading Customizations.
null
If I add a button in the second form, (ie. the one in pacage2 having a master detail relationship) and call dept form (in package1) from here, it works.
We are stuck with this problem, and unable to proceed with deploying the application. As each form need to be called and invoked from a menu.
Thanks in advance.
Ravi

Hi,
You can do like this :
mainApplication(Menu)
+------------ Frame1
|
+------------ Frame2
In MainApp you call your frame, and remove from code the
windowListener of the frame. Replace the dispose(); in frame
methods fileExit(ActionEvent e) & processWindowEvent(WindowEvent
e), by try { finalize(); } catch (java.lang.Throwable ex) {
ex.getMessage(); }
It works great.
Bart
Gopal (guest) wrote:
: Hi,
: I am calling an infobus form from another one. Once I close the
: called form, I want the control to go back to the calling one.
: I tried dispose in the called form. It doesnot work. (Gives a
: null pointer exception and crashes everything). Both the frames
: are extended from infoframe. What is the right way to do this?
: Thanx,
: --Gopal
null

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