[Jzjkit-user] Size of the resultset & present.

[<bma...@ca...>]

Hi,

 Thank you for your last help. Now I'm conecting to Ibermarc servers 
without problems.

 But there is another problem that I don't know how to resolve.

 I want to retrieve a number of records form the resultset, for example, 
1000 records.
 
 They are not all present in my Searchable instance, and I want to make 
it present. I put it present, with the fetchRecords metod, but when I'm 
going to retrieve information, there is a moment that the value of 
PresentResponse_type.presentStatus is 5, and I can't obtain the records 
that I want to retrieve.

I have tried to put the default_present_chunk_size to this number 
(Ex:1000), but I have obtained the same result :  there is no possible 
to obtain this records, and a PresentResponse_type.presentStatus of 5. 
But if try to retrieve little resultsets, with 50 or 100 records, I have 
no problems.

Now I'm using this code :

 In a future I want to use the PresentResponse_type class to the control 
of the records to make present, but now I don't do it, I use a variable.
 The part that I think maybe wrong are this two lines:

                presentRecord = 
s.fetchRecords(st.getTaskIdentifier(),inicial,servidor.getNumeroResultadosMaximo(),150000);
                frag = 
st.getFragment(inicial,servidor.getNumeroResultadosMaximo());

But this is  the source------------------->

    Z3950Origin s = new Z3950Origin();    //the searchable object.
    p.put("charset", "ISO-8859-1");            //filling the properties 
and initializing
    p.put("service_short_name","busqueda");
    p.put("service_long_name","busqueda");
    p.put("default_element_set_name","F");
    p.put("default_present_chunk_size","1000");
       
    s.init(p);
       
    IRQuery e = new IRQuery();  
       
    e.hints = new Hashtable();
       
   e.hints.put("record_syntax", servidor.getFormato()); //servidor is a 
class that I use with values of the servers. Formato is the format of 
the record_syntax.
        e.collections = new Vector();
       
        for (int i = 0; i < servidor.getBbdd().length ; i++){
            e.collections.add(servidor.getBbdd(i)); //here I add the 
different databases to connect.
        }
        e.query = new 
PrefixString(crearQueryBusqueda(datosBusqueda));//now I construct the 
RPN query
       
        Z3950SearchTask st = (Z3950SearchTask) s.createTask(e, null, 
all_observers );
        st.evaluate(100000);
       
        System.err.println("Private task status: 
"+st.lookupPrivateStatusCode(st.getPrivateTaskStatusCode()));
       
        InformationFragment frag[] = new InformationFragment[]{};
        PresentResponse_type presentRecord = null;
        boolean tareaAcabada = false;
        boolean hayResultado = true;
        int inicial=1;
        int contador=0;
        Vector vResultado = new Vector();
       
        while (!tareaAcabada){ //here I fetch the records and retrieve it.
            if (st.getFragmentCount() > 
(servidor.getNumeroResultadosMaximo()*(contador+1))) {
                presentRecord = 
s.fetchRecords(st.getTaskIdentifier(),inicial,servidor.getNumeroResultadosMaximo(),150000);
                frag = 
st.getFragment(inicial,servidor.getNumeroResultadosMaximo());
                inicial = inicial + servidor.getNumeroResultadosMaximo();
                contador++;
            } else if (st.getFragmentCount() > 0){ //here I fetch the 
records and retrieve it.
              presentRecord = 
s.fetchRecords(st.getTaskIdentifier(),inicial,(st.getFragmentCount() - 
contador*servidor.getNumeroResultadosMaximo()),150000);
               frag = st.getFragment(inicial,st.getFragmentCount() - 
contador*servidor.getNumeroResultadosMaximo());
                tareaAcabada=true;
            }else { //No results!!!
                System.out.println("No hay resultados para esta query");
                tareaAcabada=true;
                hayResultado = false;
            }
           
            if ((presentRecord.presentStatus.intValue() == 0)&& 
(hayResultado)) {
                for (int i = 0; i < frag.length ; i++){
                    vResultado.add(frag[i]);
                }
            }else{
                System.out.println("No se ha podido recuperar este 
bloque: " + presentRecord.presentStatus.intValue());
            }


Is possible that using the chunk_size I will have the 1000 records 
present and that I doesn't need to do all this?

Thanks in advance,
Bartolomé Martínez.