gistfile1.java

private static enum DBColumnTypes {
    
    BOOL(1) {
      @Override public void process(Args arguments) {
        // do stuff here that you would otherwise do in the switch block
      }
    },

    ;
    
    private final int num;
    
    private DBColumnTypes(int type) {
      this.num = type;
    }
    
    public abstract void process(Args arguments);
   
    public static get(int idx) {
      for (DBColumnTypes t : values()) {
        if (t.num == idx) {
           return t;
        }
      }
      throw new IllegalArgumentException("message here");
    }
  }

Usage: 

DBColumnTypes.get(1).process();