HistoryEraser.txt

public void onStart() throws Exception
{

}

public void onExecute() throws Exception
{if(getCancellaStorico() == true && getSeiSicuro() == true){
        String nameHistory = getNameHistory();
        BHistoryService historyService = (BHistoryService)Sys.getService(BHistoryService.TYPE);
        if (historyService == null)
            throw new IllegalStateException("History Service not available.");
        BHistoryDatabase historyDb = historyService.getDatabase();
        if (historyDb == null)
            throw new IllegalStateException("History database not available.");
        StringBuffer bql = new StringBuffer();
        List<BHistoryConfig> lista = new ArrayList<>(); 
        bql.append("history:|bql:select id");
        bql.append(" where id like '%"+nameHistory+"%'");
        BOrd ord = BOrd.make(bql.toString());
        BITable historyConfigs = (BITable)ord.get(historyService);
        try(TableCursor<BIObject> cursor = historyConfigs.cursor()){
          try (HistorySpaceConnection conn = historyDb.getConnection(null)){
            while(cursor.next()){
              lista.add((BHistoryConfig)cursor.get());                         
              }
              setTotal(lista.size());
              for (BHistoryConfig i : lista){
              BHistoryId id = i.getId();
              BIHistory history = conn.getHistory(id);
              conn.deleteHistory(id);
              }
              conn.close();
            }
         }
}
setCancellaStorico(false);
setSeiSicuro(false);
setNameHistory("Inserisci Il nome o parte dello storico da cancellare");
}
public void onStop() throws Exception
{
  // shutdown code here
}