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Thread: check a list based on the cell if there is a value

  1. #1
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    Default check a list based on the cell if there is a value

    A question.
    Since in excel I always have a list of string values.
    If in the list there exists id and plaque fammi update, if there is no id and plaque, give me the insert. Do you think it's okay what I did? what needs to be fixed?

    for (i = 0; i < 280; i++) {
    					// Se il valore NON E' NULL: ID E TARGA FACCIO L'UPDATE
    					if ((listaIdVeicolo.get(i) != null || listaIdVeicolo.get(i).isEmpty() == true)
    							&& (lista_targa.get(i) != null || lista_targa.get(i).isEmpty()) == true) {
    						System.out.print("UPDATE veicolo" + " set" + " veicolo.data_fine_validita = " + "'"
    								+ lista_data_fine_validita.get(i) + "'" + "," + " veicolo.data_inizo_validita = " + "'"
    								+ lista_data_inizio_validita.get(i) + "'" + "," + " veicolo.classe_euro = " + "'"
    								+ lista_classe_euro.get(i) + "'" + "," + " veicolo.tipo_di_possesso= " + "'"
    								+ lista_tipo_di_possesso.get(i) + "'" + " where veicolo.id = " + "'"
    								+ listaIdVeicolo.get(i) + "'" + " and" + " veicolo.targa = " + "'" + lista_targa.get(i)
    								+ "'" + ";\n");
     
    						fw.write("UPDATE veicolo" + " set" + " veicolo.data_fine_validita = " + "'"
    								+ lista_data_fine_validita.get(i) + "'" + "," + " veicolo.data_inizo_validita = " + "'"
    								+ lista_data_inizio_validita.get(i) + "'" + "," + " veicolo.classe_euro = " + "'"
    								+ lista_classe_euro.get(i) + "'" + "," + " veicolo.tipo_di_possesso= " + "'"
    								+ lista_tipo_di_possesso.get(i) + "'" + " where veicolo.id = " + "'"
    								+ listaIdVeicolo.get(i) + "'" + " and" + " veicolo.targa = " + "'" + lista_targa.get(i)
    								+ "'" + ";\n");
    					}
    					else {
    						System.out.print(
    								"insert into veicolo (create_date,modified_date,uuid, classe_euro, codice_cliente_originario,contratto,data_fine_validita,data_inizio_validita, disponibilita,nazione,targa,tipo_di_possesso, id_anagrafica) "
    										+ "VALUES (" + "'" + timestamp + "'" + "," + "'" + timestamp + "'" + "," + "'"
    										+ listaveicoloUuid.get(i) + "'" + "," + "'" + lista_classe_euro.get(i) + "'"
    										+ "," + "'" + listaCodiceClienteOriginario.get(i) + "'" + "," + "'"
    										+ listaContratto.get(i) + "'" + "," + "'"
    										+ lista_data_fine_validita.get(i).toString() + "'" + "," + "'"
    										+ lista_data_inizio_validita.get(i).toString() + "'" + "," + "'"
    										+ listadisponibilita.get(i) + "'" + "," + "'" + listaNazione.get(i) + "'" + ","
    										+ "'" + lista_targa.get(i) + "'" + "," + "'" + lista_tipo_di_possesso.get(i)
    										+ "'" + "," + "'" + listaAnagrafica.get(i) + "'" + ")" + ";\n");
     
    						fw.write(
    								"insert into veicolo (create_date,modified_date,uuid, classe_euro, codice_cliente_originario,contratto,data_fine_validita,data_inizio_validita, disponibilita,nazione,targa,tipo_di_possesso, id_anagrafica) "
    										+ "VALUES (" + "'" + timestamp + "'" + "," + "'" + timestamp + "'" + "," + "'"
    										+ listaveicoloUuid.get(i) + "'" + "," + "'" + lista_classe_euro.get(i) + "'"
    										+ "," + "'" + listaCodiceClienteOriginario.get(i) + "'" + "," + "'"
    										+ listaContratto.get(i) + "'" + "," + "'"
    										+ lista_data_fine_validita.get(i).toString() + "'" + "," + "'"
    										+ lista_data_inizio_validita.get(i).toString() + "'" + "," + "'"
    										+ listadisponibilita.get(i) + "'" + "," + "'" + listaNazione.get(i) + "'" + ","
    										+ "'" + lista_targa.get(i) + "'" + "," + "'" + lista_tipo_di_possesso.get(i)
    										+ "'" + "," + "'" + listaAnagrafica.get(i) + "'" + ")" + ";\n");
     
    					}
     
    				}

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: check a list based on the cell if there is a value

    Do you think it's okay what I did?
    Is there a problem with the code?
    Does it do what you want?
    If there are errors or the results are not what you want please explain.


    what needs to be fixed?
    for (i = 0; i < 280; i++)
    The 280 should be replaced with a variable or a method that gets the length of the list being processed.

    If the String being sent to the print method and the write method is identical, then it should not be coded two times. Create a String with the data to print and pass that String to the print and write methods.
      String toPrint = "the stuff to print";   // build String here
      System.out.print(toPrint);
      fw.write(toPrint);
    If you don't understand my answer, don't ignore it, ask a question.

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