ArrayPersistenceDelegate.java 文件源码

protected Expression instantiate(Object oldInstance, Encoder out)
{
  Class type = oldInstance.getClass().getComponentType();

  // oldInstance is expected to be an array, then
  // getClass().getComponentType() should lead
  // to its component type.
  assert (type != null);

  // Not handling primitive types in a special way here
  // causes that Class.forName("int") is built as an Expression
  // later which would cause an exception if executed. A special
  // handling to avoid the execution for primitive types can be
  // java.beans.Encoder.writeExpression() .
  return new Expression(
                        oldInstance,
                        Array.class,
                        "newInstance",
                        new Object[] {
                          type,
                          new Integer(Array.getLength(oldInstance)) });
}