Please Help me on BI Java SDK using BI JDBC Connector

Question

Hi, I'm new to sap BI Java SDK. I'm not getting how to get the primarykey columns, using BI JDBC Connector (for relational data sources). If anybody knows, please let me know. its very very urgent task to be done in my project. In the below following code.... I have written a code to connect to the database through resource bundle, reading table names, once user select table name, i need to show the primary key columns of that table to the user. here i'm not getting how to get the primary key columns . Please send me the code if there is any method to find out the primarykey columns or a logic to get them. I will be greatful to you.... if you can do this favour. Please check out the following code ........
ManagedConnectionFactory mcf;
IConnectionFactory cf;
IConnectionSpec cs;
mcf = new JdbcManagedConnectionFactory();
cf = (IConnectionFactory) mcf.createConnectionFactory();
cs = cf.getConnectionSpec();
ResourceBundle rbLocal = ResourceBundle.getBundle( "xxxx");
Enumeration propnames = rbLocal.getKeys();
while (propnames.hasMoreElements())
String key = (String) propnames.nextElement(); //out.print(key); //out.println("="rbLocal.getString(key)"");
cs.setPropertyValue(key, rbLocal.getString(key));
// Establishing the connection. // The IBIRelational interface provides an entrypoint to access // metadata and execute queries.
IBIConnection connection = (IBIConnection) cf.getConnectionEx(cs);
IBIRelational rel = connection.getRelational();
IBIQuery query = rel.createQuery();
String sqlStatement = "SELECT * FROM " + "BICQPERSON where type='pk'"; ResultSet rs = IBIDataSet dataset = query.execute();
Thanks SreeKanth

Answer 1

Well, I added two lines in OC4J.cmd
set ORACLE_HOME=C:\OC4J\oc4j_extended_101350
set JAVA_HOME=C:\JAVA\JDK7u7
before
set J2EE_HOME=%ORACLE_HOME%\j2ee\home
and I restarted the windows. It looks try to run OC4J but failed, as I open services window, it shows OC4J is "stopping". When I try to run it manually, I got the same problem again. is there anything I missed? What is your OC4J, JDK and javaservice version?
Sam