Passing an entire sql query as a parameter into a mapper in MyBatis

Question

I'm starting to use MyBatis with annotations and I tried to pass an entire query in a mapper like this:

public interface Mapper {   

    @Select("#{sql}")
    public HashMap<String,String> getResult(String sql);    

}

This is how I call the method:

String sql = "select * from table";
List<Object> list = session.selectList("getResult",sql);

When I executed the program I got this exception:

 org.apache.ibatis.exceptions.PersistenceException:
Error querying database.  Cause: org.apache.ibatis.type.TypeException: Error setting null for parameter #1 with JdbcType OTHER . Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. Cause: java.sql.SQLException: Invalid column type: 1111 

Answer 1

You can't, because the sql string isn't a "sql parameter"! Instead, you can use this solution: How to run arbitrary sql with mybatis?