Empty lines at the end of the payload generated in FTP server

Question

Hi All,
I am facing an issue in one of the use cases that I am trying to implement.
I am getting a purchase order from one of the trading partners through Oracle B2B.
B2B forwards this B2BM (B2B message ) to AIAB2BInterface. From AIAB2BInterface my BPEL process gets invoked, which in turn invokes the AdapterComposite which has a FTP adapter that writes the purchase order to a FTP server. PFB the end to end flow.
PurchaseOrder from ABC trading pertner--> Oracle B2B --> AIAB2BInterface --> TestInputProvABCS --> TestInputAdapter -> Host trading partner picks up the file from FTP location
In the ProvABCS I retrieve the actual payload from the B2BM and convert it into a string using ora:getContentasString. I am then invoking the adapter composite and sending the string as the input to FTP adapter. At the adapter composite I use a simple native schema (for validation of the input string) which has only one element PO_Info of the type string. But when the file gets generated in the FTP server there are empty lines and junk characters at the end of the file.
Need some advice on this. Why are the empty lines coming in the end of the file? Please help!
Thanks

Answer 1

OK, I cannot figure out a way to modify the JTable (in an extended class) directly.
So, what I did was to add a wrapper around the TreeTableModel which shows an empty row at the end.
For those of you who are in a similar situation, the methods that I had to modify are
public boolean isCellEditable(Object node, int column);
public int getIndexOfChild(Object parent, Object child);
public int getChildCount(Object node);
public Object getChild(Object node, int i);
These other methods are required if you are using a TreeTable instead of just a table (see http://java.sun.com/products/jfc/tsc/articles/treetable2/index.html)
public Object getValueAt(Object node, int row, int column);
public Object getValueAt(Object node, int row, String columnName);
public void setValueAt(Object node, int row, int column, Object newValue);
public void setValueAt(Object node, int row, String columnName, Object newValue);
The signature of above methods is slightly different than the ones at: http://java.sun.com/products/jfc/tsc/articles/treetable2/src/TreeTableModel.java
This is due to the fact that, if you want to display the serial no. (as in row number), then getValue() can just return the row number. IndexedTreeTableModel is another wrapper around the TreeTableModel which can add an extra column to display the serial number.