我有一个Entitycollection,我将其转换为List,如下所示:
var List = Lines.Entities.Where(p =>
p.GetAttributeValue<OptionSetValue>("new_time").Value == 100000003).Select(e =>
new {
group = e.GetAttributeValue<OptionSetValue>("new_group"),
desc = e.GetAttributeValue<string>("new_desc"),
numbers = new Dictionary<string, int>()
{
{"monday", e.GetAttributeValue<int>("new_mondayunits") },
{"tuesday", e.GetAttributeValue<int>("new_tuesdayunits") },
{"wednesday", e.GetAttributeValue<int>("new_wednesdayunits")},
{"thursday", e.GetAttributeValue<int>("new_thursdayunits") },
{"friday", e.GetAttributeValue<int>("new_fridayunits") }
}
}).ToList();
我会像这样在当天检索值:
var value = List.Where(e => e.group == group && e.desc == desc).Select(e => e.numbers["monday"]);
我的意图是以最快的方式从EntityCollection中检索值,因为这些值是从for循环中调用的。我不确定将entitycollection转换为列表是否有帮助。这是实体集合:
string fetchContractLines = @"
<fetch version='1.0' output-format='xml-platform' mapping='logical'>
<entity name='new_contractline'>
<attribute name='new_group' />
<attribute name='new_desc' />
<attribute name='new_time' />
<attribute name='new_mondayunits' />
<attribute name='new_tuesdayunits' />
<attribute name='new_wednesdayunits' />
<attribute name='new_thursdayunits' />
<attribute name='new_fridayunits' />
<filter type='and'>
<condition attribute='statecode' operator='eq' value='0' />
<condition attribute='new_contractid' operator='eq' value='{" + contractId.ToString() + @"}' />
<condition attribute='new_group' operator='not-null' />
<condition attribute='new_time' operator='not-null' />
<condition attribute='new_desc' operator='not-null' />
</filter>
</entity>
</fetch>";
EntityCollection Lines = service.RetrieveMultiple(new FetchExpression(fetchContractLines));
我需要速度的原因是我达到了插件执行的2分钟限制,并认为我可以通过减少查找时间来减少花费的时间。
答案 0 :(得分:0)
我改用了字典,但仍不确定是否有更快的方法从集合中检索值:
var Lookup = Lines.Entities.Where(e => e.GetAttributeValue<OptionSetValue>("new_time").Value == 100000001).Select(r => new
{
group = r.GetAttributeValue<OptionSetValue>("new_group").Value,
desc = r.GetAttributeValue<string>("new_desc"),
numbers = new Dictionary<string, int>()
{
{"monday", r.GetAttributeValue<int>("new_mondayunits") },
{"tuesday", r.GetAttributeValue<int>("new_tuesdayunits") },
{"wednesday", r.GetAttributeValue<int>("new_wednesdayunits") },
{"thursday", r.GetAttributeValue<int>("new_thursdayunits") },
{"friday", r.GetAttributeValue<int>("new_fridayunits") }
}
}).ToDictionary(t => t.group.ToString() + t.desc, t => t.numbers);
var quan = Lookup.ContainsKey(key) ? amLookup[key][currentday] : 0;