001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.util;
022    
023    import java.lang.reflect.Array;
024    import java.lang.reflect.GenericArrayType;
025    import java.lang.reflect.Type;
026    
027    /**
028     * @author Franck WOLFF
029     */
030    public class ArrayUtil {
031    
032        public static Type getComponentType(Type arrayType) {
033            if (arrayType instanceof GenericArrayType)
034                return ((GenericArrayType)arrayType).getGenericComponentType();
035            if (arrayType instanceof Class<?> && ((Class<?>)arrayType).isArray())
036                return ((Class<?>)arrayType).getComponentType();
037            return null;
038        }
039    
040        public static Object newArray(Type componentType, int length) {
041            return Array.newInstance(ClassUtil.classOfType(componentType), length);
042        }
043    }