mirror of git://gcc.gnu.org/git/gcc.git
75 lines
3.1 KiB
Java
75 lines
3.1 KiB
Java
/* PrimitivePersistenceDelegate.java
|
|
-- A PersistenceDelegate for primitive data types.
|
|
Copyright (C) 2005 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Classpath.
|
|
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU Classpath 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
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301 USA.
|
|
|
|
Linking this library statically or dynamically with other modules is
|
|
making a combined work based on this library. Thus, the terms and
|
|
conditions of the GNU General Public License cover the whole
|
|
combination.
|
|
|
|
As a special exception, the copyright holders of this library give you
|
|
permission to link this library with independent modules to produce an
|
|
executable, regardless of the license terms of these independent
|
|
modules, and to copy and distribute the resulting executable under
|
|
terms of your choice, provided that you also meet, for each linked
|
|
independent module, the terms and conditions of the license of that
|
|
module. An independent module is a module which is not derived from
|
|
or based on this library. If you modify this library, you may extend
|
|
this exception to your version of the library, but you are not
|
|
obligated to do so. If you do not wish to do so, delete this
|
|
exception statement from your version. */
|
|
|
|
package gnu.java.beans.encoder;
|
|
|
|
import java.beans.Encoder;
|
|
import java.beans.Expression;
|
|
import java.beans.PersistenceDelegate;
|
|
|
|
/**
|
|
* A shared PersistenceDelegate implementation for all primitive types.
|
|
*
|
|
* @author Robert Schuster (robertschuster@fsfe.org)
|
|
*/
|
|
public class PrimitivePersistenceDelegate extends PersistenceDelegate
|
|
{
|
|
|
|
protected Expression instantiate(Object oldInstance, Encoder out)
|
|
{
|
|
// The implementation relies on the fact that every primitive
|
|
// wrapper class has a constructor accepting a String argument.
|
|
// By using these constructors creating a primitive instance
|
|
// depends on the String class only.
|
|
return new Expression(oldInstance, oldInstance.getClass(), "new",
|
|
new Object[] { oldInstance.toString() });
|
|
}
|
|
|
|
protected void initialize(Class type, Object oldInstance, Object newInstance, Encoder out)
|
|
{
|
|
// This is a hack to make serializing primitive arrays work correctly.
|
|
// Instead of modifying an existing primitive instance to make it equal
|
|
// with another instance (which is not possible because primitives are
|
|
// immutable) we create a new instance. This is against the specification
|
|
// of the initialize method but make things work fine.
|
|
out.writeExpression(new Expression(oldInstance, oldInstance.getClass(), "new",
|
|
new Object[] { oldInstance.toString() }));
|
|
}
|
|
|
|
}
|