| 1 | /* |
| 2 | * JTiger Unit Testing Framework for J2SE 1.5 |
| 3 | * Copyright (C) 2005 Tony Morris |
| 4 | * |
| 5 | * This software is licenced under the |
| 6 | * Common Public Licence version 1.0 |
| 7 | * http://www.opensource.org/licenses/cpl1.0.php |
| 8 | * |
| 9 | * You received a copy of this licence with this software. |
| 10 | */ |
| 11 | package org.jtiger.framework; |
| 12 | |
| 13 | import java.lang.reflect.Constructor; |
| 14 | import java.lang.reflect.InvocationTargetException; |
| 15 | |
| 16 | final class ClassConstructionFactory |
| 17 | { |
| 18 | private ClassConstructionFactory() |
| 19 | { |
| 20 | |
| 21 | } |
| 22 | |
| 23 | static <T> ClassConstruction newClassConstruction() |
| 24 | { |
| 25 | return new ClassConstructionImpl<T>(); |
| 26 | } |
| 27 | |
| 28 | private static final class ClassConstructionImpl<T> implements ClassConstruction |
| 29 | { |
| 30 | ClassConstructionImpl() |
| 31 | { |
| 32 | |
| 33 | } |
| 34 | |
| 35 | public <T> T construct(final Class<? extends T> c) |
| 36 | throws InstantiationException, IllegalAccessException, InvocationTargetException |
| 37 | { |
| 38 | if(c == null) |
| 39 | { |
| 40 | return null; |
| 41 | } |
| 42 | |
| 43 | try |
| 44 | { |
| 45 | final Constructor<? extends T> strCtor = c.getDeclaredConstructor(String.class); |
| 46 | |
| 47 | if(!strCtor.isAccessible()) |
| 48 | { |
| 49 | strCtor.setAccessible(true); |
| 50 | } |
| 51 | |
| 52 | return strCtor.newInstance(c.getCanonicalName()); |
| 53 | } |
| 54 | catch(NoSuchMethodException e1) |
| 55 | { |
| 56 | try |
| 57 | { |
| 58 | final Constructor<? extends T> noArgsCtor = c.getDeclaredConstructor(); |
| 59 | |
| 60 | if(!noArgsCtor.isAccessible()) |
| 61 | { |
| 62 | noArgsCtor.setAccessible(true); |
| 63 | } |
| 64 | |
| 65 | return noArgsCtor.newInstance(); |
| 66 | } |
| 67 | catch(NoSuchMethodException e2) |
| 68 | { |
| 69 | return null; |
| 70 | } |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | } |