mirror of
https://github.com/2003scape/deep-c-rsc.git
synced 2024-03-22 05:49:51 -04:00
307 lines
7.9 KiB
Java
307 lines
7.9 KiB
Java
/* Reference.java --
|
|
Copyright (C) 2000, 2001, 2005, 2006 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 javax.naming;
|
|
|
|
import java.io.Serializable;
|
|
import java.util.Enumeration;
|
|
import java.util.Vector;
|
|
|
|
/**
|
|
* This class represents a reference to an object that is located outside of the
|
|
* naming/directory system.
|
|
*
|
|
* @see Referenceable
|
|
*
|
|
* @author Tom Tromey (tromey@redhat.com)
|
|
*/
|
|
public class Reference implements Cloneable, Serializable
|
|
{
|
|
private static final long serialVersionUID = - 1673475790065791735L;
|
|
|
|
/**
|
|
* The list of addresses, stored in this reference. The object may be
|
|
* have by several different addresses.
|
|
*/
|
|
protected Vector addrs;
|
|
|
|
/**
|
|
* The name of the class factory to create an instance of the object,
|
|
* referenced by this reference.
|
|
*/
|
|
protected String classFactory;
|
|
|
|
/**
|
|
* The location, from where the class factory should be loaded.
|
|
*/
|
|
protected String classFactoryLocation;
|
|
|
|
/**
|
|
* The name of the class of the object, to that this reference refers.
|
|
*/
|
|
protected String className;
|
|
|
|
/**
|
|
* Create a new reference that is referencting to the object of the
|
|
* specified class.
|
|
*/
|
|
public Reference (String className)
|
|
{
|
|
this.className = className;
|
|
addrs = new Vector ();
|
|
}
|
|
|
|
/**
|
|
* Create a new reference that is referencing to the object of the
|
|
* specified class with the given address.
|
|
*/
|
|
public Reference (String className, RefAddr addr)
|
|
{
|
|
this.className = className;
|
|
addrs = new Vector ();
|
|
addrs.add (addr);
|
|
}
|
|
|
|
/**
|
|
* Create a new reference that is referencing to the object of the
|
|
* specified class, specifying the class and location of the factory that
|
|
* produces these objects.
|
|
*
|
|
* @param className the object class name
|
|
* @param factoryClassName the object factory class name
|
|
* @param factoryLocation the object factory location
|
|
*/
|
|
public Reference (String className, String factoryClassName,
|
|
String factoryLocation)
|
|
{
|
|
this.className = className;
|
|
this.classFactory = factoryClassName;
|
|
this.classFactoryLocation = factoryLocation;
|
|
addrs = new Vector ();
|
|
}
|
|
|
|
/**
|
|
* Create a new reference that is referencing to the object of the
|
|
* specified class, specifying the class and location of the factory that
|
|
* produces these objects and also the address of this object.
|
|
*
|
|
* @param className the object class name
|
|
* @param addr the address of the object
|
|
* @param factoryClassName the object factory class name
|
|
* @param factoryLocation the object factory location
|
|
*/
|
|
public Reference (String className, RefAddr addr,
|
|
String factoryClassName, String factoryLocation)
|
|
{
|
|
this.className = className;
|
|
this.classFactory = factoryClassName;
|
|
this.classFactoryLocation = factoryLocation;
|
|
addrs = new Vector ();
|
|
addrs.add (addr);
|
|
}
|
|
|
|
/**
|
|
* Add the new address for this object at the given position of the
|
|
* address list.
|
|
*/
|
|
public void add (int posn, RefAddr addr)
|
|
{
|
|
addrs.add (posn, addr);
|
|
}
|
|
|
|
/**
|
|
* Appends the new object address to the end of the address list.
|
|
*/
|
|
public void add (RefAddr addr)
|
|
{
|
|
addrs.add (addr);
|
|
}
|
|
|
|
/**
|
|
* Removes all defined addresses of the object.
|
|
*/
|
|
public void clear ()
|
|
{
|
|
addrs.clear ();
|
|
}
|
|
|
|
public Object clone ()
|
|
{
|
|
Reference r = new Reference (className, classFactory,
|
|
classFactoryLocation);
|
|
r.addrs = (Vector) addrs.clone ();
|
|
return r;
|
|
}
|
|
|
|
// Convenience function.
|
|
private boolean equals (String a, String b)
|
|
{
|
|
return (a == null) ? (b == null) : a.equals (b);
|
|
}
|
|
|
|
/**
|
|
* Compares two addresses for equality, by value.
|
|
*/
|
|
public boolean equals (Object obj)
|
|
{
|
|
if (! (obj instanceof Reference))
|
|
return false;
|
|
Reference r = (Reference) obj;
|
|
return (equals (classFactory, r.classFactory)
|
|
&& equals (classFactoryLocation, r.classFactoryLocation)
|
|
&& equals (className, r.className)
|
|
&& addrs.equals (r.addrs));
|
|
}
|
|
|
|
/**
|
|
* Get the address of this object at the given position.
|
|
*/
|
|
public RefAddr get (int posn)
|
|
{
|
|
return (RefAddr) addrs.get (posn);
|
|
}
|
|
|
|
/**
|
|
* Get the given type of address for this object.
|
|
*
|
|
* @param addrType the needed type of address
|
|
*
|
|
* @return the address of this object, having the specified type. If there
|
|
* is no address of such type, null is returned.
|
|
*/
|
|
public RefAddr get (String addrType)
|
|
{
|
|
for (int i = 0; i < addrs.size (); ++i)
|
|
{
|
|
RefAddr r = (RefAddr) addrs.get (i);
|
|
if (addrType.equals (r.getType ()))
|
|
return r;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Get the enumeration over all defined addresses of the object.
|
|
*/
|
|
public Enumeration getAll ()
|
|
{
|
|
return addrs.elements ();
|
|
}
|
|
|
|
/**
|
|
* Get the name of the class of the referenced object.
|
|
*
|
|
* @see #className
|
|
*/
|
|
public String getClassName ()
|
|
{
|
|
return className;
|
|
}
|
|
|
|
/**
|
|
* Get the location of the factory class of the referenced object.
|
|
*
|
|
* @see #classFactoryLocation
|
|
*/
|
|
public String getFactoryClassLocation ()
|
|
{
|
|
return classFactoryLocation;
|
|
}
|
|
|
|
/**
|
|
* Get the name of the factory class of the referenced object
|
|
*
|
|
* @see #classFactory
|
|
*/
|
|
public String getFactoryClassName ()
|
|
{
|
|
return classFactory;
|
|
}
|
|
|
|
/**
|
|
* Get the hashcode of this reference.
|
|
*
|
|
* @return the sum of the hash codes of the addresses.
|
|
*/
|
|
public int hashCode ()
|
|
{
|
|
// The spec says the hash code is the sum of the hash codes of the
|
|
// addresses. It does not mention the other fields.
|
|
int h = 0;
|
|
for (int i = 0; i < addrs.size (); ++i)
|
|
h += addrs.get (i).hashCode ();
|
|
return h;
|
|
}
|
|
|
|
/**
|
|
* Remove the address at the given position.
|
|
*
|
|
* @param posn the position of the address to remove
|
|
*
|
|
* @return the removed address
|
|
*/
|
|
public Object remove (int posn)
|
|
{
|
|
return addrs.remove (posn);
|
|
}
|
|
|
|
/**
|
|
* Return the number of the defined addresses.
|
|
*/
|
|
public int size ()
|
|
{
|
|
return addrs.size ();
|
|
}
|
|
|
|
/**
|
|
* Return the string representation.
|
|
*/
|
|
public String toString ()
|
|
{
|
|
String x = getClass ().toString () + "[";
|
|
for (int i = 0; i < addrs.size (); ++i)
|
|
{
|
|
if (i > 0)
|
|
x += ",";
|
|
x += addrs.get (i).toString ();
|
|
}
|
|
return x + "]";
|
|
}
|
|
|
|
}
|