code: public void setTypeHandler(TypeHandler typeHandler) {
          this.typeHandler = typeHandler;
          this.overrider.override(MjdbcConstants.OVERRIDE_INT_TYPE_HANDLER, typeHandler);
      }
docs: Assigns {@link TypeHandler} implementation to this {@link org.midao.jdbc.core.service.QueryRunnerService} instance
  Please be aware that input {@link TypeHandler} should be share same {@link Overrider} instance:
  <p/>
  Example: QueryRunner.setTypeHandler(new BaseTypeHandler(queryRunner.getOverrider()));
  
  @param typeHandler {@link TypeHandler} implementation