/// <summary>
/// 取得规则组的表达式
/// </summary>
/// <param name="ruleGroupId">规则组ID</param>
/// <returns></returns>
private string GetExpressionStr(Guid ruleGroupId, string userName, string groupId)
{
// 规则信息
var ruleGroup = _context.Set <RuleGroup>().Find(ruleGroupId);
var rules = _context.Set <Rule>().AsNoTracking().Where(rule => rule.RuleGroupId == ruleGroupId);
var ruleConditions = _context.Set <RuleCondition>().AsNoTracking().Where(condition => condition.RuleGroupId == ruleGroupId);
// 生成表达式
var topRule = rules.Where(rule => rule.UpRuleId.Equals(new Guid())).FirstOrDefault();
var entityType = EntityTypeFinder.FindEntityType(ruleGroup.DbContext, ruleGroup.Entity);
var expressionGroup = new ExpressionGroup(entityType);
var keyValuePairs = new Dictionary <string, string> {
};
keyValuePairs.Add("UserName", userName);
keyValuePairs.Add("GroupId", groupId);
MakeExpressionGroup(topRule, rules, ruleConditions, entityType, keyValuePairs, ref expressionGroup);
// 生成过滤表达式
Expression lambda = expressionGroup.GetLambda();
// 表达式序列化
var serializer = new ExpressionSerializer(new JsonSerializer())
{
AutoAddKnownTypesAsListTypes = true
};
serializer.AddKnownType(typeof(Core.Expressions.ExpressionType));
return(serializer.SerializeText(lambda));
}
/// <summary>
/// 修改规则组
/// </summary>
/// <param name="rules">规则</param>
/// <param name="ruleConditions">条件</param>
/// <param name="ruleGroup">规则组</param>
public async Task <bool> AddOrUpdateRuleAsync(IEnumerable <RuleEntityResult> rules, IEnumerable <RuleConditionResult> ruleConditions, RuleGroup ruleGroup)
{
// 因为有动态参数的存在,表达式暂时不持久化到数据库,暂时删除group的lambda字段
//// 生成表达式保存到数据库
//// 获取实体类型
var topRule = rules.Where(rule => string.IsNullOrEmpty(rule.UpRuleId)).FirstOrDefault();
var entityType = EntityTypeFinder.FindEntityType(ruleGroup.DbContext, ruleGroup.Entity);
var expressionGroup = new ExpressionGroup(entityType);
var keyValuePairs = new Dictionary <string, string> {
};
keyValuePairs.Add("UserName", _httpContextAccessor.HttpContext.User.GetClaimValue(CustomClaimTypes.UserName));
keyValuePairs.Add("GroupId", _httpContextAccessor.HttpContext.User.GetClaimValue(CustomClaimTypes.Group));
MakeExpressionGroup(topRule, rules, ruleConditions, entityType, keyValuePairs, ref expressionGroup);
// 用当前用户数据检查表达式是否正确
try
{
expressionGroup.GetLambda();
}
catch
{
return(false);
}
// 开始更新数据
var group = _ruleGroupRepository.GetByWhereNoTracking(rg => rg.Id == ruleGroup.Id).FirstOrDefault();
// 已经存在时先删除再插入
if (group != null)
{
// 先删除再插入
_ruleRepository.DeleteRange(r => r.RuleGroupId == group.Id);
_ruleConditionRepository.DeleteRange(r => r.RuleGroupId == group.Id);
}
// 修改规则组Id
var groupId = group != null ? group.Id : GuidUtil.NewSquentialGuid();
ruleGroup.Id = groupId;
// 修改每项规则的Id和Upid
foreach (var rule in rules)
{
var oldId = rule.Id;
// 替换前端生成的ID
var ruleId = GuidUtil.NewSquentialGuid().ToString();
rule.Id = ruleId;
rule.RuleGroupId = groupId.ToString();
foreach (var r in rules)
{
if (r.UpRuleId == oldId)
{
r.UpRuleId = ruleId;
}
}
;
foreach (var c in ruleConditions)
{
if (c.RuleId == oldId)
{
c.RuleId = ruleId;
c.RuleGroupId = groupId.ToString();
}
}
;
}
// 生成新的Id
ruleConditions.ToList().ForEach(condition => condition.Id = GuidUtil.NewSquentialGuid().ToString());
// 保存全部数据
await _ruleRepository.InsertRangeAsync(_mapper.Map <IEnumerable <RuleEntity> >(rules));
await _ruleConditionRepository.InsertRangeAsync(_mapper.Map <IEnumerable <RuleCondition> >(ruleConditions));
// 更新或添加规则组
if (group == null)
{
await _ruleGroupRepository.InsertAsync(ruleGroup);
}
else
{
_ruleGroupRepository.Update(ruleGroup);
}
// 提交事务
await _unitOfWork.CommitAsync();
return(true);
}