/// <summary>
/// 计算变量Id集合所占的大小
/// </summary>
/// <returns></returns>
private int CalTagIdsSize()
{
if (mTagIdMemoryCach != null)
{
mTagIdMemoryCach.Dispose();
}
var aids = ServiceLocator.Locator.Resolve <IHisEngine>().ListAllTags().Where(e => e.Id >= Id * TagCountOneFile && e.Id < (Id + 1) * TagCountOneFile).OrderBy(e => e.Id).ToArray();
mTagIdSum = 0;
mTagIdMemoryCach = new VarintCodeMemory((int)(aids.Count() * 4 * 1.2));
if (aids.Length > 0)
{
int preids = aids[0].Id;
mTagIdSum += preids;
mTagIdMemoryCach.WriteInt32(preids);
for (int i = 1; i < aids.Length; i++)
{
var id = aids[i].Id;
mTagIdMemoryCach.WriteInt32(id - preids);
mTagIdSum += id;
preids = id;
}
}
return(mTagIdMemoryCach.Position + 4);
}
