jfinal getModel(Class) 属性超过8个就报错了！?报错

表结构如下：

create table test(
id int,
a1 varchar2(200),
a2 varchar2(200),
a3 varchar2(200),
a4 varchar2(200),
a5 varchar2(200),
a7 varchar2(200),
a8 varchar2(200),
a9 varchar2(200),
a10 varchar2(200)
)

Test test = getModel(Test.class);
		test.set("id", "seq_op.nextval");
		test.save();

Sql: insert into test(A2, A1, A4, A3, A5, A8, A7, ID, A10) values(?, ?, ?, ?, ?, ?, ?, seq_op.nextval, ?)

2014-03-11 21:00:41
[ERROR]-[Thread: qtp20698484-19]-[com.jfinal.core.ActionHandler.handle()]: /product/saveOrUpdateProduct
com.jfinal.plugin.activerecord.ActiveRecordException: java.lang.ArrayIndexOutOfBoundsException: 8
	at com.jfinal.plugin.activerecord.Model.save(Model.java:305)
	at cn.anycall.controller.ProdeuctController.saveOrUpdateProduct(ProdeuctController.java:129)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.jfinal.core.ActionInvocation.invoke(ActionInvocation.java:55)
	at com.jfinal.aop.ActionInvocationWrapper.invoke(ActionInvocationWrapper.java:45)

如果字段少于8个，可以插入！

if (DbKit.dialect.isOracle())
pst = conn.prepareStatement(sql.toString(), new String[]{tableInfo.getPrimaryKey()});
else

在这一句报错！