How to initialized a variable in java file by taking the value from web.xml

suppose i declare parameter in web.xml file
i want to access if from a java file .
how can i do this . plz help me its urgent...............

In your Servlet class you can use the getInitParameter("configfile") method.

Similar Messages

How to populate a filter field in one page with the value from other page

Take the classic report with form application.
on page 1 (report) I have a filter (dbname) for the records that will appear in the report. Say that, I enter "ap02" in the filter and all records where dbname starts with "ap02" will display. It works ok.
Then I click on "create" button and page 2 appears. I enter all fields except the dbname. This field is generated, at "pre-insert trigger on the table".
What I want is when I press the button "create" on page 2 to pass the value of the generated dbname field into the filter in page 1 so when that page refreshes I will have only one record on the report page (1). I understand that the dbname at the page 2 level still empty because it is generated by the trigger. How do I have access to that info to populate the filter.
Thanks for your assistance

Joe - Work backwards from the value generated during the execution of the trigger. You have the value there so you could save it into a package variable right then (create a package with a variable and assign the value to the variable). Then create a process on the page (after the DML process) to assign the value of your package variable to a page item. Then in the branch back to page 1, pass the item. (Or without messing with the branch, the process could simply assign the package variable directly the the page 1 item -- :P1_ITEM := my_package.my_var; ).
An alternative would be to use the "returning into" feature of DML to capture the PK of the created record into an item. Then the next page process could use the PK to fetch the new row and get the dbname value for passing to page 1.
Another option would be to update session state directly in the trigger.
Scott

How to get the value from a JavaScript and send the same to Java file?

Hi.
How to get the value from a JavaScript (this JS is called when an action invoked) and send the value from the JS to a Java file?
Thanks and regards,
Leslie V

Yes, I am trying with web application.
In the below code, a variable 'message' carries the needed info. I would like to send this 'message' variable with the 'request'.
How to send this 'message' with and to the 'request'?
Thanks for the help :-)
The actual JS code is:
function productdeselection()
var i=0;
var j=0;
var deselectedproduct = new Array(5);
var message = "Are you sure to delete Product ";
mvi=document.forms[0].MVI;
mei=document.forms[0].MEI;
lpi=document.forms[0].LPI;
if(null != mvi)
++i;
if(null != mei )
++i;
if(null != lpi)
++i;
if(null != mvi && mvi.checked)
deselectedproduct[++j]="MVI?";
if(null != mei && mei.checked)
deselectedproduct[++j]="GAP?";
if(null != lpi && lpi.checked)
deselectedproduct[++j]="LPI?";
if( 0!=j)
if(i!=j)
for (x=0; x<deselectedproduct.length; x++)
if(null != deselectedproduct[x])
message =message+ "-" +deselectedproduct[x];
alert(message);
else
//alert(" You cannot remove all products!");
return false;
return true;
}

Oracle EBS R12 - how to compile jsp and keep .java file

Hello.
When I compile the jsp file, it will create the _pagename.class file into $COMMON_TOP/_pages directory. Some of the time it also keep _pagename.java file in there.
How can force the compiler to keep the java file always. I am using following command which creates _pagename.class file.
perl $FND_TOP/patch/115/bin/ojspCompile.pl --compile -s 'ptcResponse.jsp' --flush
It keeps the _pagename.java file some of the times and not other, example if the compilation fails then java files stored there otherwise only class.
There has to be some way/location to see/keep the _pagename.java file, we need them for troubleshooting runtime error.

It keeps the _pagename.java file some of the times and not other, example if the compilation fails then java files stored there otherwise only class.
This is an expected behaviour.
There has to be some way/location to see/keep the _pagename.java file, we need them for troubleshooting runtime error.
The "perl ojspCompile.pl" command doesn't offer this -- Issue "perl ojspCompile.pl" and you will see what options are available.
Your option is to keep/save the java files in a different directory.
Thanks,
Hussein

How to compile and run a .java file from another java program

hello,
can any one tell me how to compile and run a *.java* file from another java program which is not in same directory?

Well a smarter way of implementing this is by using a solution provided by Java Itself.
If you are using J2SE 6.0+ there is an in built solution provided along with JDK itself and inorder to go ahead with solution the below are set of API which you;d be using it for compiling Java Programs (Files)
http://java.sun.com/javase/6/docs/api/javax/tools/package-summary.html
How do i do that ??
Check out the below articles which would help you of how to do that
http://www.ibm.com/developerworks/java/library/j-jcomp/index.html
http://www.javabeat.net/javabeat/java6/articles/java_6_0_compiler_api_1.php
http://books.google.com/books?id=WVbpv8SQpkEC&pg=PA155&lpg=PA155&dq=%22javax+tools%22+compiling+java+file&source=web&ots=XOt0siYe-f&sig=HH27ovuwvJgklIf8omTykUmy-eM
Now once we are done with compilation.In order to run a Specific class all you ought to do is create an object and its specific methods of a specified class included in the CLASSPATH which you can manage it easily by usage little bit reflections.
Hope that might help :)
REGARDS,
RaHuL

How does Java keep the value from temporary variable?

Hello all:
I have a Question for Java Assignment operator.
Object v1;
Object v2;
v1 = v2; // Java assignment by reference if I understand correctly
///// for example:
import java.io.*;
import java.util.*;
public class TestOne {
Vector v1;
public void changeV() {
Vector v2 = new Vector();
v2.addElement(new Integer(10));
v2.addElement(new Integer(11));
v2.addElement(new Integer(12));
v1 = v2;
public TestOne() {
changeV();
System.out.println(v1.size());
System.out.println("0: " + v1.elementAt(0));
System.out.println("1: " + v1.elementAt(1));
System.out.println("2: " + v1.elementAt(2));
public static void main(String[] args) {
new TestOne();
// Output from Screen
bash-3.00$ java TestOne
3
0: 10
1: 11
2: 12
If I understand correctly, " v1 = v2; " is assigned by reference.
So the question is when function 'changeV' return, why v1 still holds the
values from v2 which has been destroyed?
Thank you
-daniel

firstly, the assignment is by-value, not by-reference.
the value the variables hold is a thingy called "reference." (In other languages such as C or C++ it might be called "pointer.") So "v1 = v2" always copies the value of v2 to v1.
secondly, the vector object that is created in the changeV method, is created on the heap, that is, in dynamic memory. The variable v2 holds only a reference to it. So when the method returns, only the reference is destroyed, not the actual object.
The object is automatically destroyed when there are no more reachable references to it (it is "garbage collected").

How can I get the variable with the value from Thread Run method?

We want to access a variable from the run method of a Thread externally in a class or in a method. Even though I make the variable as public /public static, I could get the value till the end of the run method only. After that scope of the variable gets lost resulting to null value in the called method/class..
How can I get the variable with the value?
This is sample code:
public class SampleSynchronisation
     public static void main(String df[])
sampleThread sathr= new sampleThread();
sathr.start();
System.out.println("This is the value from the run method "+sathr.x);
// I should get Inside the run method::: But I get only Inside
class sampleThread extends Thread
     public String x="Inside";
     public void run()
          x+="the run method";
NB: if i write the variable in to a file I am able to read it from external method. This I dont want to do

We want to access a variable from the run method of a
Thread externally in a class or in a method. I presume you mean a member variable of the thread class and not a local variable inside the run() method.
Even
though I make the variable as public /public static, I
could get the value till the end of the run method
only. After that scope of the variable gets lost
resulting to null value in the called method/class..
I find it easier to implement the Runnable interface rather than extending a thread. This allows your class to extend another class (ie if you extend thread you can't extend something else, but if you implement Runnable you have the ability to inherit from something). Here's how I would write it:
public class SampleSynchronisation
public static void main(String[] args)
    SampleSynchronisation app = new SampleSynchronisation();
public SampleSynchronisation()
    MyRunnable runner = new MyRunnable();
    new Thread(runner).start();
    // yield this thread so other thread gets a chance to start
    Thread.yield();
    System.out.println("runner's X = " + runner.getX());
class MyRunnable implements Runnable
    String X = null;
    // this method called from the controlling thread
    public synchronized String getX()
      return X;
    public void run()
      System.out.println("Inside MyRunnable");
      X = "MyRunnable's data";
} // end class MyRunnable
} // end class SampleSynchronisation>
public class SampleSynchronisation
public static void main(String df[])
sampleThread sathr= new sampleThread();
sathr.start();
System.out.println("This is the value from the run
method "+sathr.x);
// I should get Inside the run method::: But I get
only Inside
class sampleThread extends Thread
public String x="Inside";
public void run()
x+="the run method";
NB: if i write the variable in to a file I am able to
read it from external method. This I dont want to do

How can I get the variable with the value from Thread's run method

We want to access a variable from the run method of a Thread externally in a class or in a method. Even though I make the variable as public /public static, I could get the value till the end of the run method only. After that scope of the variable gets lost resulting to null value in the called method/class..
How can I get the variable with the value?
This is sample code:
public class SampleSynchronisation
     public static void main(String df[])
sampleThread sathr= new sampleThread();
sathr.start();
System.out.println("This is the value from the run method "+sathr.x);
/* I should get:
Inside the run method
But I get only:
Inside*/
class sampleThread extends Thread
     public String x="Inside";
     public void run()
          x+="the run method";
NB: if i write the variable in to a file I am able to read it from external method. This I dont want to do

Your main thread continues to run after the sathr thread is completed, consequently the output is done before the sathr thread has modified the string. You need to make the main thread pause, this will allow sathr time to run to the point where it will modify the string and then you can print it out. Another way would be to lock the object using a synchronized block to stop the main thread accessing the string until the sathr has finished with it.

Need Sorter java file   for sorting the records in webdynpro java

Hi Gurus
   I had urgent requirement please give your inputs
   In my webdynpro java i need to sort entire records in table
   I now we need One sorter java class please provide that java file
   please suggest the all the steps how to do
Thanks
renu.

1. Implement class comparator wich will compare records according your sort preferencies,
like this:
     public class record_Comparator implements Comparator{
          public int compare(Object emp1, Object emp2){
      // here is your code for return -1if 'before' or 0 if equal or 1if 'after'
               int stepId_1 = ((record)emp1).get_someValue();
               int stepId_2 = ((record)emp2).get_someValue();
               if(stepId_1 > stepId_2)
                    return 1;
               else if(stepId_1 < stepId_2)
                    return -1;
               else
                    return 0;
than call method sort() with your collection of records,
like this:
Collections.sort(record_collection, new record_Comparator());

HT2493 How to change preview image of a file and NOT the icon ?

Hello dear Mac users
How to change preview image of a file and NOT the icon ?
I know how to change the icon of a file, but I wish to know how to change the preview of any file.
For example: my file is "mysong.aif", I changed the icon to be "mylogo.png" using cmd+i, cmd+v on the icon. But the preview of the file still remain the same.
I know it can be changed using iTunes, but I don't want to import all my files in iTune, and iTune cannot import all type of files.
I hope someone will understand my needs...
Thanks!

Thanks BeerbarX
You can't change the preview image for anything
hoo
QuickLook plugin
what are the plugin ?
In the case of a music file, it will be that generic black box with a note on it
That is exactly what I'm asking about !
MP3 which has a special tagging standard that can include artwork
How can I "tag" my MP3 without going thru iTunes ? Is it possible to do it dirrectly in the Finder ? Is there other type of files that can include such tags ?
Thank you for answering my question , wich I have to admit may seem useless, but I wish I could put something like a signature logo on each of the different file I produce (as AIF for music and MP4 for video clip) instead of that generic black box with a note on it, and by the meantime keeping a different icon for all of them in order to illustrate theire content.

How do I get rid of "unreadable files" when I am importing from my camera?

How do I get rid of "unreadable files" when I am importing from my camera?

Are all images unreadable? What is the exact error message you are getting?
If only a few images are unreadable, try to import not all photos at once, but in smaller batches, until you know, which photo it is that cannot be read. Import all photos that can be read and reformat your card in the camera to remove the unreadable files.
But if all photos are unreadable, try, if Image Capture can read your card.
Is it a new camera? Have you been able to import from that camera before?

Need help with java File IO ( Removing the first line from a file )

Hi guys ,
I am currently doing a project in which I need to extract out the values from the second line of a file to the end. The question is how do I ignore the first line ??
I thought of two possible answers myself. One is to use randomaccessfile to read and rewrite. But the file may be HUGE so storing the whole file in memory is not a very good idea.
Second is to jump to second line before doing while ((str = in.readLine()) != EOL) ... or just delete the first line from the file. Can anyone suggest a better solution or show me some sample codes ? Thanks.
regards
billyam

Just skip the first line (bufferedReader.readLine()), add a comment, and then handle the rest of your file

Variable type Hierarchy, how to get the value from another similar variable

Hi.
We have created a variable, type hierarchy (using ORGEH hierarchy in HR based on 0ORGUNIT). Let's call this VAR1. We want to fill this with an User Exit, beacuse we want VAR1 to have the value from another variable, VAR2, which is also type hierarchy (and based on the same characteristic).
However, when we program this user exit and use the VAR1 afterwards, it just behaves as if we have a single characteristic value and not a node value. As a result, we just get posts which do have the 'parent itself' as characteristic value, and none of the subnodes... Any hints as to what we can do in our User exit to get the value passed over from VAR2 to VAR1 as a node value? Is there any spesific syntax to be used here that we are missing? ( The VAR1 and VAR2 are both defined as hierarchy variables, we have double checked...).

Hi,
are you on BI7.0? There you can create variables type replacement path and get the value out from a different variable without any coding.
regards
Cornelia

NullPointerException - Cannot get the value from variable f_cashGiven

In SubCheckout.java (a POS), what I want is when Payment button (f_cashPayment) is pressed, the action "Cash" is performed, get the value from Cash Given (f_cashGiven), do the subtraction and post the value as Cash Return (f_cashReturn). The code is filled in actionPerformed. But I cannot get the value by using f_cashGiven.getValue() from VNumber class. It returns NULL. This should be quite straight forward, but I do not know what is wrong. Please help!
Enclosed please find the source code of SubCheckout.java and VNumber.java
This is the code of SubCheckout.java :
* The contents of this file are subject to the   Compiere License Version 1.1
* ("License"); You may not use this file except in compliance with the License
* You may obtain a copy of the License at http://www.compiere.org/license.html
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
* The Original Code is Compiere ERP & CRM Smart Business Solution. The Initial
* Developer of the Original Code is Jorg Janke. Portions created by Jorg Janke
* are Copyright (C) 1999-2005 Jorg Janke.
* All parts are Copyright (C) 1999-2005 ComPiere, Inc. All Rights Reserved.
* Contributor(s): ______________________________________.
package org.compiere.pos;
import java.awt.*;
import java.awt.event.*;
import java.math.BigDecimal;
import javax.swing.border.*;
import org.compiere.grid.ed.*;
import org.compiere.swing.*;
import org.compiere.util.*;
*     POS Checkout Sub Panel
* @author Jorg Janke
* @version $Id: SubCheckout.java,v 1.3 2005/03/11 20:28:22 jjanke Exp $
public class SubCheckout extends PosSubPanel implements ActionListener
      *      Constructor
      *     @param posPanel POS Panel
     public SubCheckout (PosPanel posPanel)
          super (posPanel);
     }     //     PosSubCheckout
     private CButton f_register = null;
     private CButton f_summary = null;
     private CButton f_process = null;
     private CButton f_print = null;
     private CLabel f_lcreditCardNumber = null;
     private CTextField f_creditCardNumber = null;
     private CLabel f_lcreditCardExp = null;
     private CTextField f_creditCardExp = null;
     private CLabel f_lcreditCardVV = null;
     private CTextField f_creditCardVV = null;
     private CButton f_cashPayment = null;
     private CLabel f_lcashGiven = null;
     private VNumber f_cashGiven = null;
     private CLabel f_lcashReturn = null;
     private VNumber f_cashReturn = null;
     private CButton f_creditPayment = null;
     /**     Logger               */
     private static CLogger log = CLogger.getCLogger(SubCheckout.class);
      *      Initialize
     public void init()
          //     Title
          TitledBorder border = new TitledBorder(Msg.getMsg(Env.getCtx(), "Checkout"));
          setBorder(border);
          //     Content
          setLayout(new GridBagLayout());
          GridBagConstraints gbc = new GridBagConstraints();
          gbc.insets = INSETS2;
          //     --     0
          gbc.gridx = 0;
          f_register = createButtonAction("Register", null);
          gbc.gridy = 0;
          add (f_register, gbc);
          f_summary = createButtonAction("Summary", null);
          gbc.gridy = 1;
          add (f_summary, gbc);
          f_process = createButtonAction("Process", null);
          gbc.gridy = 2;
          add (f_process, gbc);
          f_print = createButtonAction("Print", null);
          gbc.gridy = 3;
          add (f_print, gbc);
          //     --     1 -- Cash
          gbc.gridx = 1;
          gbc.gridheight = 2;
          gbc.fill = GridBagConstraints.BOTH;
          gbc.weightx = .1;
          CPanel cash = new CPanel(new GridBagLayout());
          cash.setBorder(new TitledBorder(Msg.getMsg(Env.getCtx(), "Cash")));
          gbc.gridy = 0;
          add (cash, gbc);
          GridBagConstraints gbc0 = new GridBagConstraints();
          gbc0.insets = INSETS2;
          gbc0.anchor = GridBagConstraints.WEST;
          f_lcashGiven = new CLabel(Msg.getMsg(Env.getCtx(),"CashGiven"));
          cash.add (f_lcashGiven, gbc0);
          f_cashGiven = new VNumber("CashGiven", false, false, true, DisplayType.Amount,
               Msg.translate(Env.getCtx(), "CashGiven"));
          f_cashGiven.addActionListener(this);
          f_cashGiven.setColumns(10, 25);
          cash.add (f_cashGiven, gbc0);
          f_cashGiven.setValue(Env.ZERO);
          f_lcashReturn = new CLabel(Msg.getMsg(Env.getCtx(),"CashReturn"));
          cash.add (f_lcashReturn, gbc0);
          f_cashReturn = new VNumber("CashReturn", false, true, false, DisplayType.Amount,
               "CashReturn");
          f_cashReturn.setColumns(10, 25);
          cash.add (f_cashReturn, gbc0);
          f_cashReturn.setValue(Env.ZERO);
          f_cashPayment = createButtonAction("Payment", null);
          f_cashPayment.setActionCommand("Cash");
          gbc0.anchor = GridBagConstraints.EAST;
          gbc0.weightx = 0.1;
          cash.add (f_cashPayment, gbc0);
          //     --     1 -- Creditcard
          CPanel creditcard = new CPanel(new GridBagLayout());
          creditcard.setBorder(new TitledBorder(Msg.translate(Env.getCtx(), "CreditCardType")));
          gbc.gridy = 2;
          add (creditcard, gbc);
          GridBagConstraints gbc1 = new GridBagConstraints();
          gbc1.insets = INSETS2;
          gbc1.anchor = GridBagConstraints.WEST;
          gbc1.gridx = 0;
          gbc1.gridy = 0;
          f_lcreditCardNumber = new CLabel(Msg.translate(Env.getCtx(), "CreditCardNumber"));
          creditcard.add (f_lcreditCardNumber, gbc1);
          gbc1.gridy = 1;
          f_creditCardNumber = new CTextField(18);
          creditcard.add (f_creditCardNumber, gbc1);
          gbc1.gridx = 1;
          gbc1.gridy = 0;
          f_lcreditCardExp = new CLabel(Msg.translate(Env.getCtx(),"CreditCardExp"));
          creditcard.add (f_lcreditCardExp, gbc1);
          gbc1.gridy = 1;
          f_creditCardExp = new CTextField(5);
          creditcard.add (f_creditCardExp, gbc1);
          gbc1.gridx = 2;
          gbc1.gridy = 0;
          f_lcreditCardVV = new CLabel(Msg.translate(Env.getCtx(), "CreditCardVV"));
          creditcard.add (f_lcreditCardVV, gbc1);
          gbc1.gridy = 1;
          f_creditCardVV = new CTextField(5);
          creditcard.add (f_creditCardVV, gbc1);
          gbc1.gridx = 3;
          gbc1.gridy = 0;
          gbc1.gridheight = 2;
          f_creditPayment = createButtonAction("Payment", null);
          f_creditPayment.setActionCommand("CreditCard");
          gbc1.anchor = GridBagConstraints.EAST;
          gbc1.weightx = 0.1;
          creditcard.add (f_creditPayment, gbc1);
     }     //     init
      *      Get Panel Position
     public GridBagConstraints getGridBagConstraints()
          GridBagConstraints gbc = super.getGridBagConstraints();
          gbc.gridx = 0;
          gbc.gridy = 3;
          return gbc;
     }     //     getGridBagConstraints
      *      Dispose - Free Resources
     public void dispose()
          super.dispose();
     }     //     dispose
      *      Action Listener
      *     @param e event
     public void actionPerformed (ActionEvent e)
          String action = e.getActionCommand();
          if (action == null || action.length() == 0)
               return;
          log.info( "PosSubCheckout - actionPerformed: " + action);
          if (e.getSource() == f_cashGiven) {
               f_cashGiven.setValue(f_cashGiven.getValue());
               System.out.println("f_cashGiven"+f_cashGiven.getDisplay());
          //     Register
          //     Summary
          //     Print
          if (action.equals("Cash")) {
               BigDecimal CashGiven, GrandTotal, CashReturn;
               System.out.println("Cash given is "+f_cashGiven.getDisplay());
               CashGiven = (BigDecimal)f_cashGiven.getValue();
               GrandTotal = (BigDecimal)p_posPanel.f_curLine.getOrder().getGrandTotal();
               CashReturn = CashGiven.subtract(GrandTotal);
               f_cashReturn.setValue(CashReturn);
          //     Cash (Payment)
          //     CreditCard (Payment)
     }     //     actionPerformed
}     //     PosSubCheckoutThis is the code of VNumber.java :
* The contents of this file are subject to the   Compiere License Version 1.1
* ("License"); You may not use this file except in compliance with the License
* You may obtain a copy of the License at http://www.compiere.org/license.html
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
* The Original Code is Compiere ERP & CRM Smart Business Solution. The Initial
* Developer of the Original Code is Jorg Janke. Portions created by Jorg Janke
* are Copyright (C) 1999-2005 Jorg Janke.
* All parts are Copyright (C) 1999-2005 ComPiere, Inc. All Rights Reserved.
* Contributor(s): ______________________________________.
package org.compiere.grid.ed;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.math.*;
import java.text.*;
import java.util.logging.*;
import javax.swing.*;
import javax.swing.text.*;
import org.compiere.apps.*;
import org.compiere.model.*;
import org.compiere.swing.*;
import org.compiere.util.*;
*     Number Control
*      @author      Jorg Janke
*      @version      $Id: VNumber.java,v 1.41 2005/09/03 01:57:16 jjanke Exp $
public final class VNumber extends JComponent
     implements VEditor, ActionListener, KeyListener, FocusListener
     /**     Number of Columns (12)          */
     public final static int SIZE = 12;
      * IDE Bean Constructor
     public VNumber()
          this("Number", false, false, true, DisplayType.Number, "Number");
     }   // VNumber
      *     Create right aligned Number field.
      *     no popup, if WindowNo == 0 (for IDs)
      * @param columnName column name
      * @param mandatory mandatory
      * @param isReadOnly read only
      * @param isUpdateable updateable
      * @param displayType display type
      * @param title title
     public VNumber(String columnName, boolean mandatory, boolean isReadOnly, boolean isUpdateable,
          int displayType, String title)
          super();
          super.setName(columnName);
          m_columnName = columnName;
          m_title = title;
          setDisplayType(displayType);
          LookAndFeel.installBorder(this, "TextField.border");
          this.setLayout(new BorderLayout());
//          this.setPreferredSize(m_text.getPreferredSize());          //     causes r/o to be the same length
//          int height = m_text.getPreferredSize().height;
//          setMinimumSize(new Dimension (30,height));
          //     ***     Text     ***
          m_text.setBorder(null);
          m_text.setHorizontalAlignment(JTextField.TRAILING);
          m_text.addKeyListener(this);
          m_text.addFocusListener(this);
          //     Background
          setMandatory(mandatory);
          this.add(m_text, BorderLayout.CENTER);
          //     ***     Button     ***
          m_button.setIcon(Env.getImageIcon("Calculator10.gif"));
          m_button.setMargin(new Insets(0, 0, 0, 0));
          m_button.setFocusable(false);
          m_button.addActionListener(this);
          this.add (m_button, BorderLayout.EAST);
          //     Prefereed Size
          this.setPreferredSize(this.getPreferredSize());          //     causes r/o to be the same length
          // Size
          setColumns(SIZE, CComboBox.FIELD_HIGHT-4);
          //     ReadWrite
          if (isReadOnly || !isUpdateable)
               setReadWrite(false);
          else
               setReadWrite(true);
     }     //     VNumber
      * Dispose
     public void dispose()
          m_text = null;
          m_button = null;
          m_mField = null;
     }   // dispose
      *     Set Document
      * @param doc document
     protected void setDocument(Document doc)
          m_text.setDocument(doc);
     }     //     getDocument
     private String               m_columnName;
     protected int               m_displayType;     // Currency / UoM via Context
     private DecimalFormat     m_format;
     private String               m_title;
     private boolean               m_setting;
     private String               m_oldText;
     private String               m_initialText;
     private boolean               m_rangeSet = false;
     private Double               m_minValue;
     private Double               m_maxValue;
     private boolean               m_modified = false;
     /** The Field                  */
     private CTextField          m_text = new CTextField(SIZE);     //     Standard
     /** The Button                  */
     private CButton              m_button = new CButton();
     private MField          m_mField = null;
     /**     Logger               */
     private static CLogger log = CLogger.getCLogger(VNumber.class);
      *      Set no of Columns
      *     @param columns columns
     public void setColumns (int columns, int height)
          m_text.setPreferredSize(null);
          m_text.setColumns(columns);
          Dimension size = m_text.getPreferredSize();
          if (height > size.height)               //     default 16
               size.height = height;
          if (CComboBox.FIELD_HIGHT-4 > size.height)
               size.height = VLookup.FIELD_HIGHT-4;
          this.setPreferredSize(size);          //     causes r/o to be the same length
          this.setMinimumSize(new Dimension (columns*10, size.height));
          m_button.setPreferredSize(new Dimension(size.height, size.height));
     }     //     setColumns
      *     Set Range with min & max
      * @param minValue min value
      * @param maxValue max value
      *     @return true, if accepted
     public boolean setRange(Double minValue, Double maxValue)
          m_rangeSet = true;
          m_minValue = minValue;
          m_maxValue = maxValue;
          return m_rangeSet;
     }     //     setRange
      *     Set Range with min & max = parse US style number w/o Gouping
      * @param minValue min value
      * @param maxValue max value
      * @return true if accepted
     public boolean setRange(String minValue, String maxValue)
          if (minValue == null || maxValue == null)
               return false;
          try
               m_minValue = Double.valueOf(minValue);
               m_maxValue = Double.valueOf(maxValue);
          catch (NumberFormatException nfe)
               return false;
          m_rangeSet = true;
          return m_rangeSet;
     }     //     setRange
      * Set and check DisplayType
      * @param displayType display type
     public void setDisplayType (int displayType)
          m_displayType = displayType;
          if (!DisplayType.isNumeric(displayType))
               m_displayType = DisplayType.Number;
          m_format = DisplayType.getNumberFormat(displayType);
          m_text.setDocument (new MDocNumber(displayType, m_format, m_text, m_title));
     }   // setDisplayType
      *     Set ReadWrite
      * @param value value
     public void setReadWrite (boolean value)
          if (m_text.isReadWrite() != value)
               m_text.setReadWrite(value);
          if (m_button.isReadWrite() != value)
               m_button.setReadWrite(value);
          //     Don't show button if not ReadWrite
          if (m_button.isVisible() != value)
               m_button.setVisible(value);
     }     //     setReadWrite
      *     IsReadWrite
      * @return true if rw
     public boolean isReadWrite()
          return m_text.isReadWrite();
     }     //     isReadWrite
      *     Set Mandatory (and back bolor)
      * @param mandatory mandatory
     public void setMandatory (boolean mandatory)
          m_text.setMandatory(mandatory);
     }     //     setMandatory
      *     Is it mandatory
      * @return true if mandatory
     public boolean isMandatory()
          return m_text.isMandatory();
     }     //     isMandatory
      *     Set Background
      * @param color color
     public void setBackground(Color color)
          m_text.setBackground(color);
     }     //     setBackground
      *     Set Background
      * @param error error
     public void setBackground (boolean error)
          m_text.setBackground(error);
     }     //     setBackground
      * Set Foreground
      * @param fg foreground
     public void setForeground(Color fg)
          m_text.setForeground(fg);
     }   // setForeground
      *     Set Editor to value
      * @param value value
     public void setValue(Object value)
          log.finest("Value=" + value);
          if (value == null)
               m_oldText = "";
          else
               m_oldText = m_format.format(value);
          //     only set when not updated here
          if (m_setting)
               return;
          m_text.setText (m_oldText);
          m_initialText = m_oldText;
          m_modified = false;
     }     //     setValue
      * Property Change Listener
      * @param evt event
     public void propertyChange (PropertyChangeEvent evt)
          if (evt.getPropertyName().equals(org.compiere.model.MField.PROPERTY))
               setValue(evt.getNewValue());
     }   // propertyChange
      *     Return Editor value
      * @return value value (big decimal or integer)
     public Object getValue()
          if (m_text == null || m_text.getText() == null || m_text.getText().length() == 0)
               return null;
          String value = m_text.getText();
          //     return 0 if text deleted
          if (value == null || value.length() == 0)
               if (!m_modified)
                    return null;
               if (m_displayType == DisplayType.Integer)
                    return new Integer(0);
               return Env.ZERO;
          if (value.equals(".") || value.equals(",") || value.equals("-"))
               value = "0";
          try
               Number number = m_format.parse(value);
               value = number.toString();      //     converts it to US w/o thousands
               BigDecimal bd = new BigDecimal(value);
               if (m_displayType == DisplayType.Integer)
                    return new Integer(bd.intValue());
               if (bd.signum() == 0)
                    return bd;
               return bd.setScale(m_format.getMaximumFractionDigits(), BigDecimal.ROUND_HALF_UP);
          catch (Exception e)
               log.log(Level.SEVERE, "Value=" + value, e);
          if (m_displayType == DisplayType.Integer)
               return new Integer(0);
          return Env.ZERO;
     }     //     getValue
      * Return Display Value
      * @return value
     public String getDisplay()
          return m_text.getText();
     }   // getDisplay
      *      Get Title
      *     @return title
     public String getTitle()
          return m_title;
     }     //     getTitle
      *      Plus - add one.
      *      Also sets Value
      *     @return new value
     public Object plus()
          Object value = getValue();
          if (value == null)
               if (m_displayType == DisplayType.Integer)
                    value = new Integer(0);
               else
                    value = Env.ZERO;
          //     Add
          if (value instanceof BigDecimal)
               value = ((BigDecimal)value).add(Env.ONE);
          else
               value = new Integer(((Integer)value).intValue() + 1);
          setValue(value);
          return value;
     }     //     plus
      *      Minus - subtract one, but not below minimum.
      *      Also sets Value
      *     @param minimum minimum
      *     @return new value
     public Object minus (int minimum)
          Object value = getValue();
          if (value == null)
               if (m_displayType == DisplayType.Integer)
                    value = new Integer(minimum);
               else
                    value = new BigDecimal(minimum);
               setValue(value);
               return value;
          //     Subtract
          if (value instanceof BigDecimal)
               BigDecimal bd = ((BigDecimal)value).subtract(Env.ONE);
               BigDecimal min = new BigDecimal(minimum);
               if (bd.compareTo(min) < 0)
                    value = min;
               else
                    value = bd;
          else
               int i = ((Integer)value).intValue();
               i--;
               if (i < minimum)
                    i = minimum;
               value = new Integer(i);
          setValue(value);
          return value;
     }     //     minus
      *     Action Listener
      * @param e event
     public void actionPerformed (ActionEvent e)
          log.config(e.getActionCommand());
          if (ValuePreference.NAME.equals(e.getActionCommand()))
               if (MRole.getDefault().isShowPreference())
                    ValuePreference.start (m_mField, getValue());
               return;
          if (e.getSource() == m_button)
               m_button.setEnabled(false);
               String str = startCalculator(this, m_text.getText(), m_format, m_displayType, m_title);
               m_text.setText(str);
               m_button.setEnabled(true);
               try
                    fireVetoableChange (m_columnName, m_oldText, getValue());
               catch (PropertyVetoException pve)     {}
               m_text.requestFocus();
     }     //     actionPerformed
      *     Key Listener Interface
      * @param e event
     public void keyTyped(KeyEvent e)    {}
     public void keyPressed(KeyEvent e) {}
      *     Key Listener.
      *          - Escape           - Restore old Text
      *          - firstChange     - signal change
      * @param e event
     public void keyReleased(KeyEvent e)
          log.finest("Key=" + e.getKeyCode() + " - " + e.getKeyChar()
                       + " -> " + m_text.getText());
          // ESC
          if (e.getKeyCode() == KeyEvent.VK_ESCAPE)
               m_text.setText(m_initialText);
          m_modified = true;
          m_setting = true;
          try
               if (e.getKeyCode() == KeyEvent.VK_ENTER)     //     10
                    fireVetoableChange (m_columnName, m_oldText, getValue());
                    fireActionPerformed();
               else     //     indicate change
                    fireVetoableChange (m_columnName, m_oldText, null);
          catch (PropertyVetoException pve)     {}
          m_setting = false;
     }     //     keyReleased
      *     Focus Gained
      * @param e event
     public void focusGained (FocusEvent e)
          if (m_text != null)
               m_text.selectAll();
     }     //     focusGained
      *     Data Binding to MTable (via GridController.vetoableChange).
      * @param e event
     public void focusLost (FocusEvent e)
     //          log.finest(e.toString());
          //     APanel - Escape
          if (e.getOppositeComponent() instanceof AGlassPane)
               m_text.setText(m_initialText);
               return;
          try
               fireVetoableChange (m_columnName, m_initialText, getValue());
               fireActionPerformed();
          catch (PropertyVetoException pve)     {}
     }   // focusLost
      *     Invalid Entry - Start Calculator
      * @param jc parent
      * @param value value
      * @param format format
      * @param displayType display type
      * @param title title
      * @return value
     public static String startCalculator(Container jc, String value,
          DecimalFormat format, int displayType, String title)
          log.config("Value=" + value);
          BigDecimal startValue = new BigDecimal(0.0);
          try
               if (value != null && value.length() > 0)
                    Number number = format.parse(value);
                    startValue = new BigDecimal (number.toString());
          catch (ParseException pe)
               log.info("InvalidEntry - " + pe.getMessage());
          //     Find frame
          Frame frame = Env.getFrame(jc);
          //     Actual Call
          Calculator calc = new Calculator(frame, title,
               displayType, format, startValue);
          AEnv.showCenterWindow(frame, calc);
          BigDecimal result = calc.getNumber();
          log.config( "Result=" + result);
          calc = null;
          if (result != null)
               return format.format(result);
          else
               return value;          //     original value
     }     //     startCalculator
      * Set Field/WindowNo for ValuePreference
      * @param mField field
     public void setField (MField mField)
          m_mField = mField;
          if (m_mField != null
               && MRole.getDefault().isShowPreference())
               ValuePreference.addMenu (this, popupMenu);
     }   // setField
      *      Remove Action Listner
      *      @param l Action Listener
     public void removeActionListener(ActionListener l)
          listenerList.remove(ActionListener.class, l);
     }     //     removeActionListener
      *      Add Action Listner
      *      @param l Action Listener
     public void addActionListener(ActionListener l)
          listenerList.add(ActionListener.class, l);
     }     //     addActionListener
      *      Fire Action Event to listeners
     protected void fireActionPerformed()
          int modifiers = 0;
          AWTEvent currentEvent = EventQueue.getCurrentEvent();
          if (currentEvent instanceof InputEvent)
               modifiers = ((InputEvent)currentEvent).getModifiers();
          else if (currentEvent instanceof ActionEvent)
               modifiers = ((ActionEvent)currentEvent).getModifiers();
          ActionEvent ae = new ActionEvent (this, ActionEvent.ACTION_PERFORMED,
               "VNumber", EventQueue.getMostRecentEventTime(), modifiers);
          // Guaranteed to return a non-null array
          Object[] listeners = listenerList.getListenerList();
          // Process the listeners last to first, notifying those that are interested in this event
          for (int i = listeners.length-2; i>=0; i-=2)
               if (listeners==ActionListener.class)
                    ((ActionListener)listeners[i+1]).actionPerformed(ae);
     }     //     fireActionPerformed
}     //     VNumber

If getValue() returns null, you need to trace the execution of the code and figure out which sequence of code is leading to the return of null. This method looks complex - a lot of if statements. If you do not have a debugger, put System.out.println statements inside the method to figure out what's going on.

Bind Variable in SELECT statement and get the value in PL/SQL block

Hi All,
I would like pass bind variable in SELECT statement and get the value of the column in Dynamic SQL
Please seee below
I want to get the below value
Expected result:
select distinct empno ,pr.dept   from emp pr, dept ps where   ps.dept like '%IT' and pr.empno =100
100, HR
select distinct ename ,pr.dept   from emp pr, dept ps where   ps.dept like '%IT' and pr.empno =100
TEST, HR
select distinct loc ,pr.dept   from emp pr, dept ps where   ps.dept like '%IT' and pr.empno =100
NYC, HR
Using the below block I am getting column names only not the value of the column. I need to pass that value(TEST,NYC..) into l_col_val variable
Please suggest
----- TABLE LIST
CREATE TABLE EMP(
EMPNO NUMBER,
ENAME VARCHAR2(255),
DEPT VARCHAR2(255),
LOC    VARCHAR2(255)
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (100,'TEST','HR','NYC');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (200,'TEST1','IT','NYC');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (300,'TEST2','MR','NYC');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (400,'TEST3','HR','DTR');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (500,'TEST4','HR','DAL');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (600,'TEST5','IT','ATL');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (700,'TEST6','IT','BOS');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (800,'TEST7','HR','NYC');
COMMIT;
CREATE TABLE COLUMNAMES(
COLUMNAME VARCHAR2(255)
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('EMPNO');
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('ENAME');
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('DEPT');
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('LOC');
COMMIT;
CREATE TABLE DEPT(
DEPT VARCHAR2(255),
DNAME VARCHAR2(255)
INSERT INTO DEPT(DEPT,DNAME) VALUES ('IT','INFORMATION TECH');
INSERT INTO DEPT(DEPT,DNAME) VALUES ('HR','HUMAN RESOURCE');
INSERT INTO DEPT(DEPT,DNAME) VALUES ('MR','MARKETING');
INSERT INTO DEPT(DEPT,DNAME) VALUES ('IT','INFORMATION TECH');
COMMIT;
PL/SQL BLOCK
DECLARE
TYPE EMPCurTyp IS REF CURSOR;
v_EMP_cursor    EMPCurTyp;
l_col_val           EMP.ENAME%type;
l_ENAME_val       EMP.ENAME%type;
l_col_ddl varchar2(4000);
l_col_name varchar2(60);
l_tab_name varchar2(60);
l_empno number ;
b_l_col_name VARCHAR2(255);
b_l_empno NUMBER;
begin
for rec00 in (
select EMPNO aa from EMP
loop
l_empno := rec00.aa;
for rec in (select COLUMNAME as column_name from columnames
loop
l_col_name := rec.column_name;
begin
l_col_val :=null;
   l_col_ddl := 'select distinct :b_l_col_name ,pr.dept ' ||' from emp pr, dept ps where   ps.dept like ''%IT'' '||' and pr.empno =:b_l_empno';
   dbms_output.put_line('DDL ...'||l_col_ddl);
   OPEN v_EMP_cursor FOR l_col_ddl USING l_col_name, l_empno;
LOOP
    l_col_val :=null;
    FETCH v_EMP_cursor INTO l_col_val,l_ename_val;
    EXIT WHEN v_EMP_cursor%NOTFOUND;
      dbms_output.put_line('l_col_name='||l_col_name ||' empno ='||l_empno);
   END LOOP;
CLOSE v_EMP_cursor;
END;
END LOOP;
END LOOP;
END;

user1758353 wrote:
Thanks Billy, Would you be able to suggest any other faster method to load the data into table. Thanks,
As Mark responded - it all depends on the actual data to load, structure and source/origin. On my busiest database, I am loading on average 30,000 rows every second from data in external files.
However, the data structures are just that - structured. Logical.
Having a data structure with 100's of fields (columns in a SQL table), raise all kinds of questions about how sane that structure is, and what impact it will have on a physical data model implementation.
There is a gross misunderstanding by many when it comes to performance and scalability. The prime factor that determines performance is not how well you code, what tools/language you use, the h/w your c ode runs on, or anything like that. The prime factor that determines perform is the design of the data model - as it determines the complexity/ease to use the data model, and the amount of I/O (the slowest of all db operations) needed to effectively use the data model.

How to initialized a variable in java file by taking the value from web.xml

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