Java tutorial
//package com.java2s; /* * JBoss, Home of Professional Open Source. * Copyright 2011, Red Hat Middleware LLC, and individual contributors * as indicated by the @author tags. See the copyright.txt file in the * distribution for a full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import java.util.ArrayList; import java.util.List; public class Main { public static String[] toSelectionArgs(Object... args) { if (args == null) return null; List<String> results = new ArrayList<String>(); for (Object arg : args) { if (arg instanceof Iterable) { for (Object it : (Iterable) arg) results.add(toSelectionArg(it)); } else { results.add(toSelectionArg(arg)); } } return results.toArray(new String[results.size()]); } private static String toSelectionArg(Object arg) { if (Boolean.class.isInstance(arg)) { arg = (Boolean.TRUE.equals(arg)) ? 1 : 0; } else if (Enum.class.isInstance(arg)) { arg = ((Enum) arg).ordinal(); } return (arg == null) ? null : String.valueOf(arg); } }