java.beans.XMLEncoder# setPersistenceDelegate ( ) 源码实例Demo

public static void main(String[] args) {
    XMLEncoder encoder = new XMLEncoder(System.out);
    encoder.setPersistenceDelegate(Test4646747.class, new MyPersistenceDelegate());
    // WARNING: This can eat up a lot of memory
    Object[] obs = new Object[10000];
    while (obs != null) {
        try {
            obs = new Object[obs.length + obs.length / 3];
        }
        catch (OutOfMemoryError error) {
            obs = null;
        }
    }
    PersistenceDelegate pd = encoder.getPersistenceDelegate(Test4646747.class);
    if (!(pd instanceof MyPersistenceDelegate))
        throw new Error("persistence delegate has been lost");
}
 

public static void main(String[] args) {
    XMLEncoder encoder = new XMLEncoder(System.out);
    encoder.setPersistenceDelegate(Test4646747.class, new MyPersistenceDelegate());
    // WARNING: This can eat up a lot of memory
    Object[] obs = new Object[10000];
    while (obs != null) {
        try {
            obs = new Object[obs.length + obs.length / 3];
        }
        catch (OutOfMemoryError error) {
            obs = null;
        }
    }
    PersistenceDelegate pd = encoder.getPersistenceDelegate(Test4646747.class);
    if (!(pd instanceof MyPersistenceDelegate))
        throw new Error("persistence delegate has been lost");
}
 

static void test(AbstractTest object) {
    ByteArrayOutputStream output = new ByteArrayOutputStream();

    XMLEncoder encoder = new XMLEncoder(output);
    encoder.setPersistenceDelegate(
            object.getClass(),
            new DefaultPersistenceDelegate(new String[] {"value"}));

    encoder.writeObject(object);
    encoder.close();

    System.out.print(output);

    ByteArrayInputStream input = new ByteArrayInputStream(output.toByteArray());
    XMLDecoder decoder = new XMLDecoder(input);
    AbstractTest result = (AbstractTest) decoder.readObject();
    decoder.close();

    if (object.getValue() != result.getValue())
        throw new Error("Should be " + object);
}
 

static void test(AbstractTest object) {
    ByteArrayOutputStream output = new ByteArrayOutputStream();

    XMLEncoder encoder = new XMLEncoder(output);
    encoder.setPersistenceDelegate(
            object.getClass(),
            new DefaultPersistenceDelegate(new String[] {"value"}));

    encoder.writeObject(object);
    encoder.close();

    System.out.print(output);

    ByteArrayInputStream input = new ByteArrayInputStream(output.toByteArray());
    XMLDecoder decoder = new XMLDecoder(input);
    AbstractTest result = (AbstractTest) decoder.readObject();
    decoder.close();

    if (object.getValue() != result.getValue())
        throw new Error("Should be " + object);
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(Container.class, new PersistenceDelegate() {
        protected Expression instantiate(Object oldInstance, Encoder out) {
            Container container = (Container) oldInstance;
            Component component = container.getComponent();
            return new Expression(container, component, "create", new Object[] {component});
        }
    });
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(C.class, new DefaultPersistenceDelegate() {
        protected Expression instantiate(Object oldInstance, Encoder out) {
            C c = (C) oldInstance;
            return new Expression(c, c.getX(), "createC", new Object[] {});
        }
    });
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(Container.class, new PersistenceDelegate() {
        protected Expression instantiate(Object oldInstance, Encoder out) {
            Container container = (Container) oldInstance;
            Component component = container.getComponent();
            return new Expression(container, component, "create", new Object[] {component});
        }
    });
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(C.class, new DefaultPersistenceDelegate() {
        protected Expression instantiate(Object oldInstance, Encoder out) {
            C c = (C) oldInstance;
            return new Expression(c, c.getX(), "createC", new Object[] {});
        }
    });
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    encoder.setOwner(this.owner);
    encoder.setPersistenceDelegate(A.class, new ADelegate());
    encoder.setPersistenceDelegate(B.class, new BDelegate());
    encoder.setPersistenceDelegate(C.class, new CDelegate());
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(
            OuterClass.InnerClass.class,
            new DefaultPersistenceDelegate() {
                protected Expression instantiate(Object oldInstance, Encoder out) {
                    OuterClass.InnerClass inner = (OuterClass.InnerClass) oldInstance;
                    OuterClass outer = inner.getOuter();
                    return new Expression(inner, outer, "getInner", new Object[0]);
                }
            }
    );
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(
            OuterClass.InnerClass.class,
            new DefaultPersistenceDelegate() {
                protected Expression instantiate(Object oldInstance, Encoder out) {
                    OuterClass.InnerClass inner = (OuterClass.InnerClass) oldInstance;
                    OuterClass outer = inner.getOuter();
                    return new Expression(inner, outer, "getInner", new Object[0]);
                }
            }
    );
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(Container.class, new PersistenceDelegate() {
        protected Expression instantiate(Object oldInstance, Encoder out) {
            Container container = (Container) oldInstance;
            Component component = container.getComponent();
            return new Expression(container, component, "create", new Object[] {component});
        }
    });
}
 

protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(C.class, new DefaultPersistenceDelegate() {
        protected Expression instantiate(Object oldInstance, Encoder out) {
            C c = (C) oldInstance;
            return new Expression(c, c.getX(), "createC", new Object[] {});
        }
    });
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    super.initialize(encoder);
    encoder.setPersistenceDelegate(Public.class, new PublicPersistenceDelegate());
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(B.class, new BDelegate());
    encoder.setPersistenceDelegate(C.class, new CDelegate());
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(B.class, new BDelegate());
    encoder.setPersistenceDelegate(C.class, new CDelegate());
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(B.class, new BDelegate());
    encoder.setPersistenceDelegate(C.class, new CDelegate());
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    super.initialize(encoder);
    encoder.setPersistenceDelegate(Public.class, new PublicPersistenceDelegate());
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    encoder.setPersistenceDelegate(B.class, new BDelegate());
    encoder.setPersistenceDelegate(C.class, new CDelegate());
}
 

@Override
protected void initialize(XMLEncoder encoder) {
    super.initialize(encoder);
    encoder.setPersistenceDelegate(Public.class, new PublicPersistenceDelegate());
}