MyBatis issue: Unrecognized jdbcType - mybatis

Question

While trying to convert my app from using MyBatis [it was iBatis before], I've been getting the following error, in spite of trying to make so many different kinds of changes to the code: What am I doing wrong? Any help would be really really really great!!!
Error message:
`Caused by: org.springframework.jdbc.UncategorizedSQLException: ### Error querying database. Cause: com.ibm.db2.jcc.am.SqlException: [jcc][10271][10296][3.58.82] Unrecognized JDBC type: -10. ERRORCODE=-4228, SQLSTATE=null
`
`### The error may exist in Path-to-XML-File.XML`
`### The error may involve namespace.resultMap-name`
`### The error occurred while executing a query`
`### SQL: {call name-of-stored-proc(?)}`
`### Cause: com.ibm.db2.jcc.am.SqlException: [jcc][10271][10296][3.58.82] Unrecognized JDBC type: -10. ERRORCODE=-4228, SQLSTATE=null`
`; uncategorized SQLException for SQL []; SQL state [null]; error code [-4228]; [jcc][10271][10296][3.58.82] Unrecognized JDBC type: -10. ERRORCODE=-4228, SQLSTATE=null; nested exception is com.ibm.db2.jcc.am.SqlException: [jcc][10271][10296][3.58.82] Unrecognized JDBC type: -10. ERRORCODE=-4228, SQLSTATE=null`
XML File: `
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="Namespace-name">
<resultMap id="retrieveReports-results" type="Folder-structure-to-Java-file" autoMapping="true">
<result property="name" column="REPORT_NAME"/>
<result property="location" column="REPORT_DIRECTORY"/>
<result property="key" column="REPORT_KEY"/>
<result property="executable" column="EXECUTABLE"/>
<result property="commandLine" column="COMMAND_LINE"/>
<result property="commandLineFormat" column="COMMAND_LINE_FORMAT"/>
</resultMap>
<select id="retrieveReports" resultType="java.util.Map" statementType="CALLABLE">
{call prc_sel_reports(#{reports,jdbcType=CURSOR,javaType=java.sql.ResultSet,mode=OUT,resultMap=retrieveReports-results})}
</select>
</mapper>`
Java code:
try {
List < Report > reports = super.getSqlSession().selectList("retrieveReports");
if(log.isDebugEnabled()){
log.debug("Retrieved " + reports.size() + " reports, in method: retrieveReports()");
}
return reports;
// Attempt to catch different kinds of exceptions.
} catch (Exception e) {
throw new RuntimeException("Exception caught while trying to retrieve reports", e);
}

Answer 1

You have to specify a parameterType in the select statement, either map or custom class. An instance has to be passed on statement invocation.
resultType is not used, then irrelevant.
Procedure actually writes in a field of the "input" parameter passed to mybatis statement, and the statement does not return anything.
Mapper interface would be: void retrieveReports(Map<String, Object> params);
And your call:
Map<String, Object> params = new HashMap<String, Object>();
session.selectList("retrieveReports", params);
List<Report> reports = (List<Report>)params.get("reports");
Param may also be a custom type with property private List<Report> reports;.