RowInconsistentException does not show for the 2nd time

Question

Hi,
I have a simple page with a few input fields and a save button.
The input fields are derived from a ViewObject based on a single Entity Object.
I open the page in two browsers. I follow the below steps:
1) make changes in first browser
2) make change in second browser
3) save changes in first browser - it is successful
4) click on save on second browser - a RowInconsistentException is thrown
5) click on save again in the second browser - the changes gets saved, I was expecting the exception to be thrown again, but it is not thrown.
I tried debugging it by printing the posted attributes (Entitiy.getPosetdAttribute()) before saving.
On step-4 the posted attributes are different then the ones in DB, so the exception is thrown, that is fine.
But on step-5 the posted attributes are same as the ones in the DB, (it looks like they are updated from the DB again on step-4) and the exception is not thrown.
But in my page I want the save in step-5 to fail so that the user has to requery the page. How can I do that?
Any Idea!!
Thanks,
Anil

Answer 1

If you want to keep getting the JBO-25014 and not refresh the values from the database:
boolean[] attributeChanges;int numberOfAttributes;
public void lock() {   
Object[] currValues = saveCurrentValues();  
try {        super.lock();    }
catch (RowInconsistentException e) {        revert();        resetCurrentValues(currValues);        throw(e);    }}
private Object[] saveCurrentValues() { 
attributeChanges = new boolean[getAttributeCount()];    numberOfAttributes = getAttributeCount();    // Save the current values of the attributes (so that we can restore them later)   
Object[] currValues = new Object[numberOfAttributes];      
for (int i=0; i<numberOfAttributes; i++) {       
currValues[i] = getAttribute(i);        attributeChanges[i] = isAttributeChanged(i);    }    return currValues;}  
private void resetCurrentValues(Object[] currValues) {   
for (int i=0; i<numberOfAttributes; i++) {         // Set the EO instance with the saved values                   System.out.println("Attr["+ i + "] :" +currValues[i]);                 
if (attributeChanges[i]) {           
populateAttributeAsChanged(i, currValues[i]);         }
else {            
populateAttribute(i, currValues[i]);         }    }}
Sorry about the formatting. The new forum mess everything up
Timo