[SNMP4J] MOTable

[Jose Ignacio]

Yes, I was using DefaultMOMutableTableModel. Now I'm extending
DefaultMOMutableTableModel.

My question is, where does DefaultMOMutableTableModel checks if a cell in a
getNext request exists? I have traced it and only 3 methods are invoked
(iterator, tailIterator and getRowCount). Do I have to rewrite iterator
method returning a Iterator with MOTableRows ?

Initially I thought I had to rewrite covers(oid) method.

PS: I'm trying to develop a facade to snmp4j that abstract the coders of
snmp4j.

On 10/11/06, Frank Fock <fock at agentpp.com> wrote:
>
> Are you sure that you are implementing your own
> MOTableModel? It seems to me (because you are
> registering real rows) that you are using the
> DefaultMOMutableTableModel.
>
> I meant to implement a class that only creates
> TableRow instances when required (thus on-the-fly).
>
> Best regards,
> Frank
>
> Jose Ignacio wrote:
> > Thanks, but I was already using MOMutableTableModel. I have:
> >
> > public class TiSnmpTableVar extends DefaultMOTable{
> >    private Object    mObject;
> >    private Method    mMethod;
> >
> >    public TiSnmpTableVar(OID oid, MOTableIndex moTableIndex, MOColumn[]
> > moColumn)
> >    {
> >        super(oid, moTableIndex, moColumn);
> >        ....
> >    }
> >
> >    public Variable getValue (OID oid, int row)
> >    {
> >        try{
> >            return (Variable) mMethod.invoke(mObject, new Object[] { new
> > Integer(oid), new Integer(row) });
> >        } ....
> >
> >        return null;
> >    }
> > }
> >
> > And I use it with:
> >
> >        MOTableSubIndex[] subIndexes = new MOTableSubIndex[] { new
> > MOTableSubIndex(SMIConstants.SYNTAX_INTEGER) };
> >        MOTableIndex indexDef = new MOTableIndex(subIndexes, false);
> >
> >        MOColumn[] columns = new MOColumn[2];
> >        int c = 0;
> >        columns[c++] = new MOColumn(c, SMIConstants.SYNTAX_OCTET_STRING,
> > MOAccessImpl.ACCESS_READ_ONLY); // ifIndex
> >        columns[c++] = new MOMutableColumn(c,
> SMIConstants.SYNTAX_INTEGER32,
> > MOAccessImpl.ACCESS_READ_WRITE, null); // ifAdminStatuls
> >
> >        DefaultMOTable myTable = new TiSnmpTableVar(new OID("
> > 1.3.6.1.4.1.4444.2.9"), indexDef, columns);
> >        MOMutableTableModel model = (MOMutableTableModel)
> myTable.getModel
> > ();
> >        Variable[] rowValues1 = new Variable[] { new
> OctetString("TiSac"),
> > new Integer32(45) };
> >        Variable[] rowValues2 = new Variable[] { new
> OctetString("TiKnows"),
> > new Integer32(2) };
> >        Variable[] rowValues3 = new Variable[] { new
> OctetString("TiFlows"),
> > new Integer32(5) };
> >        model.addRow(new DefaultMOMutableRow2PC(new OID("1"),
> rowValues1));
> >        model.addRow(new DefaultMOMutableRow2PC(new OID("2"),
> rowValues2));
> >        model.addRow(new DefaultMOMutableRow2PC(new OID("3"),
> rowValues3));
> >
> > // (DefaultMOServer) mServer
> > mServer.register(myTable , null);
> >
> >
> > Then, I need to register all the rows in the table, but I can't do that
> > because I don't know any value. What I need is that when the server
> > receives
> > a 1.3.6.1.4.1.4444.2.9.*.* GET request the server asks the value to the
> > TiSnmpTable object.
> >
> >
> >
> > On 10/10/06, Frank Fock <fock at agentpp.com> wrote:
> >>
> >> Hello Jose,
> >>
> >> For virtual table instrumentation implement the MOTableModel and
> >> use a DefaultMOTable instance with that model. This is by far
> >> better and a lot easier than implementing your own command processor
> >> (even better than doing that, would be implementing a sub-class
> >> of ManagedObject).
> >>
> >> Best regards,
> >> Frank
> >>
> >> Jose Ignacio wrote:
> >> > Hello, now I have a more interesting problem.I think it's better to
> >> explain
> >> > with an example:
> >> >
> >> > I need to send 'user id' with 'users last loggin'. I do it with
> >> MyMOTable
> >> > (that extends DefaultTable). getValue method calls getCell(row,col)
> >> method
> >> > from class Users and that one returns the Variable result.
> >> >
> >> > The problem is that the number of users is unknown so I can't
> register
> >> all
> >> > rows on the table (I can't use a listener because now the values are
> in
> >> a
> >> > table, but later they can be in memory, ...). I have thought to write
> a
> >> > commandProcessor wich sends all requests that begins with the table
> OID
> >> to
> >> > class Users.
> >> >
> >> > For exameple: If we have oid 1.2.3 for the table, then all request
> for
> >> > 1.2.3.* are sent to Users class.
> >> >
> >> >
> >> > Thanks
> >> > --
> >> > Jose Ignacio
> >> > _______________________________________________
> >> > SNMP4J mailing list
> >> > SNMP4J at agentpp.org
> >> > http://lists.agentpp.org/mailman/listinfo/snmp4j
> >>
> >> --
> >> AGENT++
> >> http://www.agentpp.com
> >> http://www.mibexplorer.com
> >> http://www.mibdesigner.com
> >>
> >>
> > _______________________________________________
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> > SNMP4J at agentpp.org
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>
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