Updating CPS script tables

Question

Hi all,
Beginner question.
What is the syntax/appropriate method to update an entry in a self-defined CPS table? I am able to insert values, but the method/syntax for updating specific columns is not clear.
Thanks to some helpful posts I have the following already that simply checks my test table ( a table defined under the scripting section as a table with a single string column called "Description") for the existence of a value that matches the key. If this is found, an update should be triggered (this fails), if not found, then an insert is done (this works).
   Table table = jcsSession.getTableByName("TEST_TABLE");
   String searchKey = "1000";
   String key = "1000";
   boolean boolFound = false;
   if (table != null) {
     for (Iterator it = table.getTableRowByKey(searchKey); it.hasNext();) {
       TableValue tv = (TableValue)it.next();
       bFound = true;     
   if (boolFound) {
       // Updating value
       jcsOut.println("Found an entry, updating");
       TableValue tv = table.createTableValue();
       tv.setSearchKey(key);
       tv.setColumnName("DESCRIPTION");
       tv.setColumnValue("Updated description");
       jcsSession.persist();
   else {
     // Insert value
     jcsOut.println("Inserting new entry");
     TableValue tv = table.createTableValue();
     tv.setColumnName("DESCRIPTION");
     tv.setKey(key);
     tv.setColumnValue("New description");
     tv.setSearchKey(key);
     jcsSession.persist();
Error is then:
Caused by: JCS-102313: SearchKey: 1000 can not be different than: null
If using the setKey method, the failure raised relates to a duplicate key field, asn the createTableValue() seems to be intended only to insert new values into tables.
Thanks in advance.
Edited by: JoStew on Nov 28, 2011 1:45 PM

Answer 1

It`s me again. I read you coding again and I'am sure I found your problem.
You have a TableValue with key 1000
String searchKey = "1000";
String key = "1000";
   Table table = jcsSession.getTableByName("TEST_TABLE");
   String searchKey = "1000";
   String key = "1000";
   boolean boolFound = false;
   if (table != null) {
     for (Iterator it = table.getTableRowByKey(searchKey); it.hasNext();) {
       TableValue tv = (TableValue)it.next();
       bFound = true;     
And now you will create another Dataset with Key 1000
if (boolFound) {
       // Updating value
       jcsOut.println("Found an entry, updating");
       TableValue tv = table.createTableValue();
       tv.setSearchKey(key);
       tv.setColumnName("DESCRIPTION");
       tv.setColumnValue("Updated description");
       jcsSession.persist();
Try something like this:
if (table != null) {
     for (Iterator it = table.getTableRowByKey(searchKey); it.hasNext();) {
       TableValue tv = (TableValue)it.next();
       // You have found the Dataset by SearchKey and Searchkey == DatasetKey, so only one dataset will be found.
      // now    
       tv.setColumnName("DESCRIPTION");
       tv.setColumnValue("Updated description");
      boolFound = true;
      jcsSession.persist();
    if(!boolFound)
     // It`s a new Dataset
     jcsOut.println("Inserting new entry");
     TableValue tv = table.createTableValue();
     tv.setColumnName("DESCRIPTION");
     tv.setKey(key);
     tv.setColumnValue("New description");
     tv.setSearchKey(key);
     jcsSession.persist();
}else ....
I hope this will help. I will check my coding tomorrow, but it looks ok. At the moment I haven't a SAPCPS to check it out.
Kind Regards
Marc