3
* JBoss, Home of Professional Open Source
4
* Copyright 2005, JBoss Inc., and individual contributors as indicated
5
* by the @authors tag. See the copyright.txt in the distribution for a
6
* full listing of individual contributors.
8
* This is free software; you can redistribute it and/or modify it
9
* under the terms of the GNU Lesser General Public License as
10
* published by the Free Software Foundation; either version 2.1 of
11
* the License, or (at your option) any later version.
13
* This software is distributed in the hope that it will be useful,
14
* but WITHOUT ANY WARRANTY; without even the implied warranty of
15
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16
* Lesser General Public License for more details.
18
* You should have received a copy of the GNU Lesser General Public
19
* License along with this software; if not, write to the Free
20
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23
package org.jboss.remoting.serialization.impl.java;
25
import java.io.IOException;
26
import java.io.ObjectOutputStream;
27
import java.io.OutputStream;
28
import java.lang.reflect.Method;
29
import java.security.AccessController;
30
import java.security.PrivilegedActionException;
31
import java.security.PrivilegedExceptionAction;
33
import org.jboss.logging.Logger;
34
import org.jboss.remoting.util.SecurityUtility;
37
* @author <a href="ron.sigal@jboss.com">Ron Sigal</a>
38
* @version $Revision: 1.1 $
40
* Copyright Aug 27, 2008
43
public class ClearableObjectOutputStream extends ObjectOutputStream
45
protected static Logger log = Logger.getLogger(ClearableObjectOutputStream.class);
46
protected static Method clearMethod;
47
protected static Object[] PARAMS = new Object[]{};
53
clearMethod = getDeclaredMethod(ObjectOutputStream.class, "clear", new Class[]{});
55
catch (SecurityException e)
57
log.error(e.getMessage(), e);
59
catch (NoSuchMethodException e)
61
log.error(e.getMessage(), e);
65
public ClearableObjectOutputStream(OutputStream out) throws IOException
74
clearMethod.invoke(this, PARAMS);
78
log.error(e.getMessage(), e);
82
static private Method getDeclaredMethod(final Class c, final String name, final Class[] parameterTypes)
83
throws NoSuchMethodException
85
if (SecurityUtility.skipAccessControl())
87
Method m = c.getDeclaredMethod(name, parameterTypes);
88
m.setAccessible(true);
94
return (Method) AccessController.doPrivileged( new PrivilegedExceptionAction()
96
public Object run() throws NoSuchMethodException
98
Method m = c.getDeclaredMethod(name, parameterTypes);
99
m.setAccessible(true);
104
catch (PrivilegedActionException e)
106
throw (NoSuchMethodException) e.getCause();