PercInstantiator.java revision 78c496fe0fac4c89993109340aec80d1afa3141f 
1/**
2 * Copyright 2006-2013 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package org.objenesis.instantiator.perc;
17
18import java.io.ObjectInputStream;
19import java.lang.reflect.Method;
20
21import org.objenesis.ObjenesisException;
22import org.objenesis.instantiator.ObjectInstantiator;
23
24/**
25 * Instantiates a class by making a call to internal Perc private methods. It is only supposed to
26 * work on Perc JVMs. This instantiator will not call any constructors. The code was provided by
27 * Aonix Perc support team.
28 *
29 * @author Henri Tremblay
30 * @see org.objenesis.instantiator.ObjectInstantiator
31 */
32public class PercInstantiator implements ObjectInstantiator {
33
34	private final Method newInstanceMethod;
35
36	private final Object[] typeArgs = new Object[] { null, Boolean.FALSE };
37
38	public PercInstantiator(Class type) {
39
40		typeArgs[0] = type;
41
42		try {
43			newInstanceMethod = ObjectInputStream.class.getDeclaredMethod("newInstance",
44					new Class[] { Class.class, Boolean.TYPE });
45			newInstanceMethod.setAccessible(true);
46		}
47      catch(RuntimeException e) {
48			throw new ObjenesisException(e);
49		}
50      catch(NoSuchMethodException e) {
51         throw new ObjenesisException(e);
52      }
53	}
54
55	public Object newInstance() {
56		try {
57			return newInstanceMethod.invoke(null, typeArgs);
58		} catch (Exception e) {
59			throw new ObjenesisException(e);
60		}
61	}
62
63}
64