Java中调用参数是数组的存储过程

Java中调用参数是数组的存储过程

1. 存储过程以及类型定义如下：
--The array in oracle
CREATE OR REPLACE TYPE idArray AS TABLE OF VARCHAR2(20);

--package header
CREATE OR REPLACE PACKAGE Lib_Package AS

PROCEDURE Book_Check_Procedure(ids IN idArray, exist OUT NUMBER);

END Lib_Package;

--package body
CREATE OR REPLACE PACKAGE BODY Lib_Package AS

PROCEDURE Book_Check_Procedure(
ids IN idArray,
exist OUT NUMBER) AS
v_Index BINARY_INTEGER;
BEGIN
v_Index:= ids.FIRST;
LOOP
SELECT COUNT(*) INTO exist FROM Lib_Duplicate WHERE status='Lent'
AND book_id=ids(v_Index);
EXIT WHEN v_Index=ids.LAST OR exist>0;
v_Index:= ids.NEXT(v_Index);
END LOOP;
END Book_Check_Procedure;

END Lib_Package;

2.在Java中调用上面的存储过程

(1) 在Oracle中定义数组类型idArray
(2) 在java构造数组并转换成Oracle中定义的数组类型，调用存储过程

/**
* 当要删除图书时，检查是否仍然有图书复本处于借出状态
*/
public boolean checkBookStatus(String[] bookIds) throws DataAccessException {
boolean flag = false;
Connection conn = null;
OracleCallableStatement cstmt = null;
ArrayDescriptor desc = null;
ARRAY bookIdArray = null;
int count = 0;
String sql = "{call LIB_PACKAGE.Book_Check_Procedure(?,?)}";
DbDriverManager dbManager = DbDriverManager.getInstance();
conn = dbManager.getConnection(Constants.DATABASE);
try {
cstmt = (OracleCallableStatement) conn.prepareCall(sql);
//定义oracle中的数组类型
desc = ArrayDescriptor.createDescriptor("IDARRAY", conn);
bookIdArray = new ARRAY(desc, conn, bookIds);
cstmt.setObject(1, bookIdArray, oracle.jdbc.OracleTypes.ARRAY);
cstmt.registerOutParameter(2, Types.INTEGER);
cstmt.execute();
count = cstmt.getInt(2);
log.info(this.getClass() + ".checkBookStatus: count = " + count);
DbOperHelp.closeStatement(this.getClass(), cstmt);
DbOperHelp.closeConnection(this.getClass(), conn);
} catch (SQLException e) {
log.error(this.getClass() + ".checkBookStatus-->SQLException: "
+ e.getMessage());
DbOperHelp.closeStatement(this.getClass(), cstmt);
DbOperHelp.closeConnection(this.getClass(), conn);
throw new DataAccessException(
"When check the books, there is a SQLException: "
+ e.getMessage(), e.getCause());
}
if (count > 0) {
flag = true;
}
return flag;
}

3.注意的情况

问题：
存储过程的参数中含有VARRAY、TABLE类型，目的是为了传入一批数据，前端用java，但是java怎么设置这两种类型参数呢？？？
解决方法：
在Oracle安装目录发现例子，安装目录下/ora92/jdbc/demo/demo/samples/jdbcoci下的PLSQLIndexTab。可能遇到的问题：连接为oci连接，thin连接不行，增加nls_charset12.jar包，不然会出现java.sql.SQLException: Non supported character set: oracle-character-set-852异常。