Class Reference

protected Vector addrs

The list of addresses, stored in this reference. The object may be have by several different addresses.

protected String classFactory

The name of the class factory to create an instance of the object, referenced by this reference.

protected String classFactoryLocation

The location, from where the class factory should be loaded.

protected String className

The name of the class of the object, to that this reference refers.

public Reference(String className)

Create a new reference that is referencting to the object of the specified class.

public Reference(String className,
                 String factoryClassName,
                 String factoryLocation)

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.

Parameters:

className - the object class name

factoryClassName - the object factory class name

factoryLocation - the object factory location

public Reference(String className,
                 RefAddr addr)

Create a new reference that is referencing to the object of the specified class with the given address.

public Reference(String className,
                 RefAddr addr,
                 String factoryClassName,
                 String factoryLocation)

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.

Parameters:

className - the object class name

addr - the address of the object

factoryClassName - the object factory class name

factoryLocation - the object factory location

public void add(int posn,
                RefAddr addr)

Add the new address for this object at the given position of the address list.

public void add(RefAddr addr)

Appends the new object address to the end of the address list.

public void clear()

Removes all defined addresses of the object.

public Object clone()

This method may be called to create a new copy of the Object. The typical behavior is as follows:

• o == o.clone() is false
• o.getClass() == o.clone().getClass() is true
• o.equals(o) is true

However, these are not strict requirements, and may be violated if necessary. Of the three requirements, the last is the most commonly violated, particularly if the subclass does not override Object.equals(Object).

If the Object you call clone() on does not implement Cloneable (which is a placeholder interface), then a CloneNotSupportedException is thrown. Notice that Object does not implement Cloneable; this method exists as a convenience for subclasses that do.

Object's implementation of clone allocates space for the new Object using the correct class, without calling any constructors, and then fills in all of the new field values with the old field values. Thus, it is a shallow copy. However, subclasses are permitted to make a deep copy.

All array types implement Cloneable, and override this method as follows (it should never fail):

 public Object clone()
 {
   try
     {
       super.clone();
     }
   catch (CloneNotSupportedException e)
     {
       throw new InternalError(e.getMessage());
     }
 }
 

Overrides:

clone in interface Object

Returns:

a copy of the Object

See Also:

Cloneable

public boolean equals(Object obj)

Compares two addresses for equality, by value.

Overrides:

equals in interface Object

public RefAddr get(int posn)

Get the address of this object at the given position.

public RefAddr get(String addrType)

Get the given type of address for this object.

Parameters:

addrType - the needed type of address

Returns:

the address of this object, having the specified type. If there is no address of such type, null is returned.

public Enumeration getAll()

Get the enumeration over all defined addresses of the object.

public String getClassName()

Get the name of the class of the referenced object.

See Also:

className

public String getFactoryClassLocation()

Get the location of the factory class of the referenced object.

See Also:

classFactoryLocation

public String getFactoryClassName()

Get the name of the factory class of the referenced object

See Also:

classFactory

public int hashCode()

Get the hashcode of this reference.

Overrides:

hashCode in interface Object

Returns:

the sum of the hash codes of the addresses.

public Object remove(int posn)

Remove the address at the given position.

Parameters:

posn - the position of the address to remove

Returns:

the removed address

public int size()

Return the number of the defined addresses.

public String toString()

Return the string representation.

Overrides:

toString in interface Object