I have found some answers to my questions so I will share them here.
- I have found some documentation relating to Result Sets from SQL queries. There are three scrolling options for them. Forward only allows scrolling forward through the rows (records). Scroll Insensitive allows scrolling forwards and backwards but not sensitive to changes made by others. Scroll Sensitive allows scrolling forwards and backwards and is sensitive to changes made by others.
The scroll type is set by an attribute in
oQuery = oConnexion.createStatement(SCROLL ATTRIBUTE)
The scroll attributes are
If no attribute is entered it defaults to the Forward only.
oQuery = oConnexion.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE)
should set the Result Set to allow scrolling forwards and backwards but not sensitive to changes made by others. This does not work in LO. I found in the OpenOffice Forums how to do this in LO.
oQuery = oConnexion.createStatement()
oQuery.ResultSetType = com.sun.star.sdbc.ResultSetType.SCROLL_INSENSITIVE
Adding the ResultSetType setting.
The values for the ResultSetType are long 1003, 1004, and 1005 for the three scroll Types. You can use the shorter statement
oQuery.ResultSetType = 1004
You can find the ResultSetType
r (long) = oResult.ResultSetType
It appears that ResultSetType 1005 is not implemented in LO as if set to 1005 it returns type 1004 without any error. If set to an invalid number it gives invalid argument error.
With the scroll Type set to Scroll Insensitive you can scroll to any record using
absolute(n) where n is a record number.
- I have not found a direct method for the equivalent of oResult.columns for rows but you can find the number of records in the result Set using
size = oResult.getRow()
which gets the Row number of the last Row, which is the number of Rows, providing ResultSetType is set to Scroll Insensitive.
- There is documentation at http://www.openoffice.org/api/ but I find it is difficult to understand.