[SNMP4J] Fwd: Table Model

[Aiman Farhat]

Hi All,

The problem I am facing with snmp4j is as follow, I am building a
*dynamic*table model, where every time a request comes I clear the old
data and then
recreate it. The Issue I am facing is when I am sending subsequent requests
the data model is not returning the correct rows. Just to give you an
example:

As a test the data I am sending back to the request either:



Set A:

Component1

Component2

Component3

Component4

Component5

Component6


OR


Set B:

Component11

Component22

Component33

Component44

Component55

Component66



Now the problem as follow:

I see the following results in the Mib browser returned:

Component1

Component22

Component3

Component44

Component55

Component6


As you can see the values in the table model is not what I have expected.
As when I am building the table model I am clearing the old data then re
populated with either set A or Set B

of dummy values.



Just to elaborate more from code prospective :



T*his is building the table section:*



DefaultMOTable table = new DefaultMOTable(tableRootOid, indexDef,

                                                columns.toArray(new
MOColumn[0]));

MOMutableTableModel model = (MOMutableTableModel) table.getModel();



int i = 1;



for (Variable[] variables : tableRows) {

    model.addRow(new DefaultMOMutableRow2PC(new OID(String.valueOf(i)),
variables));

    i++;

}

table.setVolatile(true);

return table;



This section details the registration of the managed Table Object


server.register(table, null);

server.addLookupListener(new DeployedComponentListener(table), table);




And this is my Listener class implementation



@Override

*public* *void* queryEvent(MOServerLookupEvent event) {



*DefaultMOTable* table = (*DefaultMOTable*) event.getLookupResult();

                           MOMutableTableModel<DefaultMOMutableRow2PC>
model = *(MOMutableTableModel<DefaultMOMutableRow2PC>) table.getModel()*;



                           *synchronized* (model) {



                                  model.clear();

                                  Random r = *new* Random();



                                  *int* rand = r.nextInt(2);



                                  *if* (rand == 0) {



                                         Variable[] var1 = *new* Variable[]
{ *new* Integer32(1),

                                                       *new* OctetString(
"Component1"),

                                                       *new*
OctetString("Component1
version"),

                                                       *new*
OctetString("Component1
revision"),

                                                       *new*
OctetString("Component1
insenace id"),

                                                       *new* OctetString("")
};



                                         more var…..




model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("1"), var1));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("2"), var2));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("3"), var3));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("4"), var4));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("5"), var5));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("6"), var6));



                                  } *else* {



                                         Variable[] var1 = *new* Variable[]
{ *new* Integer32(1),

                                                       *new* OctetString(
"Component11"),

                                                       *new* OctetString(""
),

                                                       *new* OctetString(""
),

                                                       *new* OctetString(""
),

                                                       *new* OctetString("")
};



                                          more  var




model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("1"), var1));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("2"), var2));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("3"), var3));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("4"), var4));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("5"), var5));


model.addRow(*new*DefaultMOMutableRow2PC(
*new* OID("6"), var6));

                                  }

                           }


I am following the AgentPro instrumentation guide this the only guide I
could find on how to build the table model.

Thanks

AF