/// <summary>
/// 缓存计数
/// </summary>
/// <param name="cache"></param>
/// <param name="group">数据分组</param>
/// <param name="getKey">缓存关键字获取器</param>
/// <param name="getByKey"></param>
/// <param name="getValue"></param>
/// <param name="member"></param>
protected Member(Whole.Event.Cache <valueType, modelType, memberCacheType> cache, int group, Func <modelType, keyType> getKey
, Func <keyType, targetType> getByKey, Func <valueType, targetType> getValue, Expression <Func <targetType, KeyValue <valueType, int> > > member)
: base(cache.SqlTable, group)
{
if (getKey == null)
{
throw new ArgumentNullException("getKey is null");
}
if (getByKey == null)
{
throw new ArgumentNullException("getByKey is null");
}
if (getValue == null)
{
throw new ArgumentNullException("getValue is null");
}
if (member == null)
{
throw new ArgumentNullException("member is null");
}
MemberExpression <targetType, KeyValue <valueType, int> > expression = new MemberExpression <targetType, KeyValue <valueType, int> >(member);
if (expression.Field == null)
{
throw new InvalidCastException("member is not MemberExpression");
}
GetKey = getKey;
GetByKey = getByKey;
GetValue = getValue;
GetMember = expression.GetMember;
setMember = expression.SetMember;
SqlTable.OnUpdated += onUpdated;
cache.OnDeleted += onDeleted;
}
/// <summary>
/// 自增id标识缓存计数器
/// </summary>
/// <param name="cache"></param>
/// <param name="getByKey"></param>
/// <param name="getValue"></param>
/// <param name="member"></param>
/// <param name="group">数据分组</param>
public MemberIdentity(Whole.Event.Cache <valueType, modelType, memberCacheType> cache
, Func <int, targetType> getByKey, Func <valueType, targetType> getValue, Expression <Func <targetType, KeyValue <valueType, int> > > member, int group = 1)
: base(cache, group, DataModel.Model <modelType> .GetIdentity32, getByKey, getValue, member)
{
}
