[ http://issues.apache.org/jira/browse/IBATIS-53?page=comments#action_61482 ] Fabio Grassi commented on IBATIS-53: ------------------------------------
This issue is critical for the adoption of SqlMaps in my organization (Assicurazioni Generali). We access the RDBMS (Oracle) exclusively through stored procedures. Support for Oracle ref cursors both as function result and as out parameter is fundamental. Thanks in advance, Fabio. > Support for oracle cursors as resultsets > ---------------------------------------- > > Key: IBATIS-53 > URL: http://issues.apache.org/jira/browse/IBATIS-53 > Project: iBatis for Java > Type: New Feature > Components: SQL Maps > Reporter: Ken Katsma > Priority: Minor > > iBatis doesn't currently support result sets from functions in Oracle. A > modification to SQLExecutor as detailed below can add the necessary support. > However, it requires a hard-coded check for an Oracle driver. A better > option would be to supply a factory for alternate SQLExecutor's for different > dialects. This would allow for any future database specific customization as > well. > The code change is in SQLExecutor.executeQueryProcedure (see comments): > public void executeQueryProcedure(RequestScope request, Connection conn, > String sql, Object[] parameters, > int skipResults, int maxResults, > RowHandlerCallback callback) > throws SQLException { > ErrorContext errorContext = request.getErrorContext(); > errorContext.setActivity("executing query procedure"); > errorContext.setObjectId(sql); > CallableStatement cs = null; > ResultSet rs = null; > try { > errorContext.setMoreInfo("Check the SQL Statement (preparation > failed)."); > cs = conn.prepareCall(sql); > ParameterMap parameterMap = request.getParameterMap(); > ParameterMapping[] mappings = parameterMap.getParameterMappings(); > errorContext.setMoreInfo("Check the output parameters (register output > parameters failed)."); > registerOutputParameters(cs, mappings); > errorContext.setMoreInfo("Check the parameters (set parameters > failed)."); > parameterMap.setParameters(request, cs, parameters); > errorContext.setMoreInfo("Check the statement (update procedure > failed)."); > // **************************************** > // Code changes below > // **************************************** > if > (conn.getMetaData().getDatabaseProductName().equalsIgnoreCase("Oracle")) > { > // If in oracle then execute instead of executeQuery > boolean b = cs.execute(); > errorContext.setMoreInfo("In Oracle query mode."); > errorContext.setMoreInfo("Check the output parameters (retrieval of > output parameters failed)."); > // Get the output parameters first, instead of last > retrieveOutputParameters(cs, mappings, parameters); > // Then find the resultset and handle it > for (int i=0;i<parameters.length;i++) > { > if (parameters[i] instanceof ResultSet) > { > rs = (ResultSet) parameters[i]; > break; > } > } > errorContext.setMoreInfo("Check the results (failed to retrieve > results)."); > handleResults(request, rs, skipResults, maxResults, callback); > } > //**************************************** > // Non-oracle..original code > else > { > > errorContext.setMoreInfo("In non-Oracle mode."); > rs = cs.executeQuery(); > errorContext.setMoreInfo("Check the results (failed to retrieve > results)."); > handleResults(request, rs, skipResults, maxResults, callback); > errorContext.setMoreInfo("Check the output parameters (retrieval of > output parameters failed)."); > retrieveOutputParameters(cs, mappings, parameters); > } > } finally { > try { > closeResultSet(rs); > } finally { > closeStatement(cs); > } > } > An example mapping looks like: > <parameterMap id="clientParameters" class="map" > > <parameter property="result" jdbcType="ORACLECURSOR" mode="OUT"/> > <parameter property="maxRows" jdbcType="VARCHAR" > javaType="java.lang.String" mode="IN"/> > </parameterMap> > <procedure id="getClientListProc" resultMap="clientResult" > parameterMap="clientParameters"> > {?= call abc.CLIENT_VIEW_PKG.client_result_list_f(?)} > </procedure> -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - If you want more information on JIRA, or have a bug to report see: http://www.atlassian.com/software/jira
