Hi Friends,

I have a question on the implementation of a specific use case which
is as follows:

1) I have a data provider of ArrayCollection of some custom class
called StockVO which is bound to a datagrid. Say the values initially
received from the server are 1,2,3,4,5 on a column StockValue from the
respective  classes.

2) At regular interval by polling I have an updated ArrayCollection
coming in from the server. With the new set of dataprovider, I require
to compare with the old values against the same specific beans and
change the color of the cell in the datagrid,

 ie Say the 0th element of StockVO class in the array collection had
value 5 the first time.

The new Array Collection has the same Object updated to say 6, I need
to change the cell color to green.


Questions I have for the implementation of such a use case of Stock
Application is:

1) How do I compare the previous values to new values? Do I use UUID
in each of the bean?

2) How do I retain the old Arraycollection and compare this with the
new value?

3) If I had to use Item Renderer for this operation to selectively
change color how do I pass the data knowledge on the previous and
current value at the same time?

Thanks in advance for the help folks.

Cheers,
Naveen

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