Spring simplejdbc Stored procedure using resultset Extractor
<p>I am new to Spring and i'm learning it now. Meanwhile i am stuck at a particular place . i am able to execute the stored procedure but its not returning me any result back .please guide me .I'm using sybase database . The stored procedure contains two parameters one is for the input and the other is the output.</p>

<pre><code>  public String getGetNextIdQuery(String string, String region){
      String custId = ""; 
      JdbcTemplate jtempl  = jdbcTemplateMap.get(region);

  Map&lt;String, Object&gt; inParams = new HashMap&lt;String, Object&gt;();
  String nextId = "?";

           inParams.put("len", string);
           inParams.put("acct_id",nextId);

           SimpleJdbcCall simpleJdbcCall = new SimpleJdbcCall(jtempl).
            withProcedureName("pr_acct_id")
            .withReturnValue()
            .withReturnValue().withoutProcedureColumnMetaDataAccess()
            .declareParameters(new SqlOutParameter("RETURN", java.sql.Types.VARCHAR))
            .declareParameters(new SqlParameter("len", java.sql.Types.SMALLINT))
            .declareParameters(new SqlParameter("acct_id", java.sql.Types.VARCHAR))
          .declareParameters(new SqlReturnResultSet("RESULT", new ResultSetExtractor&lt;String&gt;() {

              @Override
              public String extractData(
                            ResultSet arg0)
                                          throws SQLException {
                    String custId = "";
                    int i = 0;                  
                    while(arg0.next()) {  
                       System.out.println(i++);
                       custId = arg0.getString("acct_id");
                     }

              return custId;

              }

        }));                       
           Map&lt;String, Object&gt; result = simpleJdbcCall.execute(inParams);

            System.out.println((String)result.get("RESULT"));

            custId = (String)result.get("RESULT");

         return custId;

            }
</code></pre>