在ibatis中传递和返回自定义数组对象，在java中传递和返回oracle [英] Pass and return custom array object in ibatis and oracle in java

问题描述

我环顾四周寻找一个很好的例子，但我还没有遇到过。我想使用IBATIS框架将自定义字符串数组从java传递到oracle并返回。有没有人有一个很好的链接到一个例子？我正在从IBATIS调用存储过程。

I've looked around for a good example of this, but I haven't run into one yet. I want to pass a custom string array from java to oracle and back, using the IBATIS framework. Does anyone have a good link to an example? I'm calling stored procs from IBATIS.

谢谢

推荐答案

bsanders给了我一个很好的起点 - 这就是我必须做的才能让它在RAD环境中工作（websphere 6.2）。

bsanders gave me a good starting point - here's what I had to do to make it work within the RAD environment (websphere 6.2).

public Object getResult(CallableStatement statement, int i) throws SQLException {
    return statement.getArray(i).getArray(); //getting null pointer exception here
}

public void setParameter(PreparedStatement ps, int i, Object param, String jdbcType) throws SQLException {
    if (param == null) {
        ps.setNull(i, Types.ARRAY);

    } else {
        String[] a = (String[]) param;
        //ARRAY aOracle = ARRAY.toARRAY(a, (OracleConnection)ps.getConnection());

        //com.ibm.ws.rsadapter.jdbc.WSJdbcConnection
        w = (com.ibm.ws.rsadapter.jdbc.WSJdbcConnection)ps.getConnection());

        //com.ibm.ws.rsadapter.jdbc.WSJdbcObject x;
        Connection nativeConnection = Connection)WSJdbcUtil.getNativeConnection((WSJdbcConnection)ps.getConnection());

        ArrayDescriptor descriptor = ArrayDescriptor.createDescriptor("F2_LIST", nativeConnection);
        ARRAY dataArray = new ARRAY(descriptor, nativeConnection, a);
        ps.setArray(i, dataArray);
    }
}

注意我必须得到的nativeConnection，描述符I不得不做，等等。但是，虽然我可以将数据作为一个字符串数组传递到数据库中，但我还是无法弄清楚为什么我没有得到任何回报。我的OUT参数（getResult（CallableStatement statment，int i）抛出空指针异常，即使我在数据库中的plsql中设置out参数。

Notice the nativeConnection I had to get, the descriptor I had to make, and so on. However, while I can pass things into the database as an array of Strings, I haven't been able to figure out why I'm not getting anything back. My OUT parameter (the getResult(CallableStatement statment, int i) is throwing a null pointer exception, even though I'm setting the out parameter in the plsql in the database.

--stored procedure to take a | delimited ids
   PROCEDURE array_test (argument IN f2_list, result OUT f2_list) 
   AS
      l_procname_v   VARCHAR2 (50)                 := 'array_test';
      l_param_list   VARCHAR2 (2000)
                   := l_procname_v || ' param_values: p_string: ';

      p_status_n     NUMBER;
      p_message_v    VARCHAR2 (2000);
      ret_list f2_list := new f2_list();
      l_count_v varchar2(200);
   BEGIN

      l_count_v := argument.COUNT;
      for x in 1..argument.count
      LOOP
          pkg_az_common_util.az_debug (package_nm,
                                   l_procname_v,
                                   pkg_az_data_type_def.debug_num,
                                   argument(x)
                                  );
      end loop;

      pkg_az_common_util.az_debug (package_nm,
                                   l_procname_v,
                                   pkg_az_data_type_def.debug_num,
                                   l_count_v
                                  );
      ret_list.extend();
      ret_list(1) := 'W';
      ret_list.extend();
      ret_list(2) := 'X';
      ret_list.extend();
      ret_list(3) := 'Y';
      ret_list.extend();
      ret_list(4) := 'Z';

      result := ret_list;


   EXCEPTION
      WHEN OTHERS
      THEN
         p_status_n := pkg_az_common_util.get_error_code;
         p_message_v :=
               TO_CHAR (p_status_n)
            || '|'
            || 'Oracle Internal Exception('
            || l_procname_v
            || ')'
            || '|'
            || TO_CHAR (SQLCODE)
            || '|'
            || SQLERRM
            || l_param_list;
         standard_pkg.log_error (package_nm,
                                 l_procname_v,
                                 SQLCODE,
                                 p_message_v
                                );

         IF p_status_n = 1
         THEN
            RAISE;
         END IF;
   END array_test;

以下是我访问它的方式：

Here is how I'm accessing it:

Map queryParamsTest = new HashMap();

        String[] testArray = {"A", "B", "C"};

        queryParamsTest.put("argument", testArray);



        DaoUtils.executeQuery(super.getSqlMapClientTemplate(),
                "arrayTest", queryParamsTest, queryParamsTest
                .toString());  //just executes query


        String[] resultArray = (String[])queryParamsTest.get("result");

        for(int x = 0; x< resultArray.length; x++)
        {
            System.out.println("Result: " + resultArray[x]);
        }



<parameterMap id="storedprocParams" class="map">        
        <parameter property="argument" mode="IN" jdbcType="ARRAY" typeHandler="ArrayTypeHandler"/>    
        <parameter property="result" mode="OUT" jdbcType="ARRAY" typeHandler="ArrayTypeHandler"/>        
    </parameterMap>    
    <procedure id="arrayTest" parameterMap="storedprocParams">        
        {call pkg_az_basic_dev.array_test(?, ? )}    
    </procedure>

任何想法？

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