net.sf.cglib.core
public abstract class KeyFactory extends Object
equals
and hashCode
methods follow the
the rules laid out in Effective Java by Joshua Bloch.
To generate a KeyFactory
, you need to supply an interface which
describes the structure of the key. The interface should have a
single method named newInstance
, which returns an
Object
. The arguments array can be
anything--Objects, primitive values, or single or
multi-dimension arrays of either. For example:
private interface IntStringKey { public Object newInstance(int i, String s); }
Once you have made a KeyFactory
, you generate a new key by calling
the newInstance
method defined by your interface.
IntStringKey factory = (IntStringKey)KeyFactory.create(IntStringKey.class); Object key1 = factory.newInstance(4, "Hello"); Object key2 = factory.newInstance(4, "World");
Note:
hashCode
equality between two keys key1
and key2
is only guaranteed if
key1.equals(key2)
and the keys were produced by the same factory.
Version: $Id: KeyFactory.java,v 1.24 2004/09/18 21:22:22 herbyderby Exp $
Nested Class Summary | |
---|---|
static class | KeyFactory.Generator |
Field Summary | |
---|---|
static Customizer | CLASS_BY_NAME |
static Customizer | OBJECT_BY_CLASS |
Method Summary | |
---|---|
static KeyFactory | create(Class keyInterface) |
static KeyFactory | create(Class keyInterface, Customizer customizer) |
static KeyFactory | create(ClassLoader loader, Class keyInterface, Customizer customizer) |