Java中的结构和数组出错

Question

使用Structs和Arrays处理对象列表时出错。

java.lang.ClassCastException: oracle.sql.StructDescriptor cannot be cast to oracle.sql.ArrayDescriptor

以下是代码：

List<Commission> commissions = (List<Commission>) parameter;

Struct[] structs = new Struct[commissiones.size()];
for (int index = 0; index < comisions.size(); index++) {
    Object[] params = new Object[9];

    Commission commission = commissions.get(index);

    /* Setting parameters */

    Struct struct = ps.getConnection().createStruct("T_COMMISSION", params);
    structs[index] = struct;
}

Array array = ((OracleConnection)ps.getConnection()).createOracleArray("C_COMMISSION", structs);

ps.setArray(i, array);  

编辑，添加T_COMMISSION：

CREATE OR REPLACE TYPE GESFIN.T_COMMISSION AS OBJECT (COM_MZN VARCHAR2(3),
                                                      COM_PVP VARCHAR2(8),
                                                      -- ..More params)
/

CREATE TYPE C_COMMISSION AS TABLE OF T_COMMISSION
/