NullPointerException / meta data (more info)

["Luther Ananda Miller" <luther.miller@xxxxxxxxxx>]

Now I've got more info on this problem (DB2 drivers are throwing a
NullPointerException when I retrieve meta data after a getProcedureColumns()
call, works fine with the toolbox drivers). I turned on tracing and found
that it throws the exception on the very first attempt to get any info from
the first record in the resultset returned from getProcedureColumns():

as400: Connection  Not Displayed open.
as400: Connection  Not Displayed: Auto commit = "false".
as400: Connection  Not Displayed: Read only = "true".
as400: Connection  Not Displayed: Transaction isolation = "2".
getConnection returning
driver[className=com.ibm.db2.jdbc.app.DB2Driver,context=null,DB2 for OS/400
JDBC Driver]
as400: Callable statement  Not Displayed open.
as400: Callable statement  Not Displayed: Escape processing = "true".
as400: Callable statement  Not Displayed: Fetch direction = "1000".
as400: Callable statement  Not Displayed: Fetch size = "0".
as400: Callable statement  Not Displayed: Max field size = "0".
as400: Callable statement  Not Displayed: Max rows = "0".
as400: Callable statement  Not Displayed: Query timeout = "0".
as400: Callable statement  Not Displayed: Result set conncurrency = "1007".
as400: Callable statement  Not Displayed: Result set type = "1003".
SQLWarning: reason([IBM][JDBC Driver][12101] ResultSet type changed to
scroll insensitive.) SQLstate([IBM][JDBC Driver][12101] ResultSet type
changed to scroll insensitive.) vendor code(-99999)
as400: Statement  Not Displayed open.
as400: Statement  Not Displayed: Escape processing = "true".
as400: Statement  Not Displayed: Fetch direction = "1000".
as400: Statement  Not Displayed: Fetch size = "0".
as400: Statement  Not Displayed: Max field size = "0".
as400: Statement  Not Displayed: Max rows = "0".
as400: Statement  Not Displayed: Query timeout = "0".
as400: Statement  Not Displayed: Result set conncurrency = "1007".
as400: Statement  Not Displayed: Result set type = "1004".
as400: Unknown  Not Displayed: Re-using a result set object..
as400: Unknown  Not Displayed: Conncurrency = "1007".
as400: Unknown  Not Displayed: Fetch direction = "1000".
as400: Unknown  Not Displayed: Fetch size = "0".
as400: Unknown  Not Displayed: Max rows = "0".
as400: Unknown  Not Displayed: Type = "1004".
[600|14/02/2000 20:17:28] Got procedure columns meta data, examining...
[600|14/02/2000 20:17:28] About to get getInt("DATA_TYPE")
as400: Callable statement  Not Displayed closed.
[100|14/02/2000 20:17:28] encountered java.lang.NullPointerException:

java.lang.NullPointerException
      com/ibm/db2/jdbc/app/DB2ResultSet.getInt(I)I+80
(DB2ResultSet.java:2968)
      com/ibm/db2/jdbc/app/DB2RSGetProcedureColumns.getInt(I)I+112
(DB2RSGetProcedureColumns.java:319)
      com/ibm/db2/jdbc/app/DB2ResultSet.getInt(Ljava/lang/String;)I+43
(DB2ResultSet.java:5412)

com/hypere/ebiz/server/ProcedureExecuter.prepareCallableStatement(Lcom/hyper
e/ebiz/edata/DataSet; Ljava/sql/CallableStatement;+52
(ProcedureExecuter.java:191)
      ...

The code looks something like this:

  stmt = connection.prepareCall(userStatement);
  DatabaseMetaData dmd = connection.getMetaData();
  ResultSet paramInfo = dmd.getProcedureColumns(
    connection.getCatalog(), schema, procedureName, "%");

  Logger.log(Logger.DETAIL, "Got procedure columns meta data,
examining...");

  for (int idx = 1; paramInfo.next(); idx++ ) {
   Logger.log(Logger.DETAIL, "About to get getInt(\"DATA_TYPE\")");
   int dataType = paramInfo.getInt("DATA_TYPE");
   // exception thrown
   ...



Maybe it is just a configuration error in my setup for the native drivers?
The url is:

jdbc:db2://localhost/DEMO1;naming=sql;translate binary=false;access=read
call;transaction isolation=read committed;libraries=DEMO1;trace=true;do
escape processing=true;blocking enabled=true;block size=128



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