code: public static Map<String, Object> onComparisonExpression(Expression expression, EntityMetadata m,
              KunderaMetadata kunderaMetadata, KunderaQuery kunderaQuery)
      {
          ComparisonExpression compExp = (ComparisonExpression) expression;
  
          String condition = compExp.getIdentifier();
          Expression sfpExp = compExp.getLeftExpression();
          Map<String, Object> map = KunderaQueryUtils.setFieldClazzAndColumnFamily(sfpExp, m, kunderaMetadata);
          Object value = KunderaQueryUtils.getValue(compExp.getRightExpression(), (Class) map.get(Constants.FIELD_CLAZZ),
                  kunderaQuery);
          kunderaQuery.addFilterClause(
                (String) map.get(Constants.COL_NAME), condition, value,
                (String) map.get(Constants.FIELD_NAME), (Boolean) map.get(Constants.IGNORE_CASE));
          return map;
  
      }
docs: On comparison expression.
  
  @param expression
  the expression
  @param m
  the m
  @param idColumn
  the id column
  @param isIdColumn
  the is id column
  @return
  @return the filter