Multimap<Integer, Integer> customRuleIdsByTemplateRuleId = HashMultimap.create();
for (Rule customRule : customRules) {
customRuleIdsByTemplateRuleId.put(customRule.getTemplateId(), customRule.getId());
}
List<RuleParameter> customRuleParams = mapper.selectAllCustomRuleParameters();
Multimap<Integer, RuleParameter> customRuleParamsByRuleId = ArrayListMultimap.create();
for (RuleParameter customRuleParam : customRuleParams) {
customRuleParamsByRuleId.put(customRuleParam.getRuleId(), customRuleParam);
}