private Expression <Func <string, bool> > ResolveInFunc(MethodCallExpression methodCallExpression, bool @in)
{
if (methodCallExpression.IsEnumerableContains(methodCallExpression.Method.Name) && IsMethodWrapShardingKey(methodCallExpression))
{
object arrayObject = null;
if (methodCallExpression.Object != null)
{
if (methodCallExpression.Object is MemberExpression member1Expression)
{
arrayObject = Expression.Lambda(member1Expression).Compile().DynamicInvoke();
}
else if (methodCallExpression.Object is ListInitExpression member2Expression)
{
arrayObject = Expression.Lambda(member2Expression).Compile().DynamicInvoke();
}
}
else if (methodCallExpression.Arguments[0] is MemberExpression member2Expression)
{
arrayObject = Expression.Lambda(member2Expression).Compile().DynamicInvoke();
}
else if (methodCallExpression.Arguments[0] is NewArrayExpression member3Expression)
{
arrayObject = Expression.Lambda(member3Expression).Compile().DynamicInvoke();
}
if (arrayObject != null)
{
var enumerable = (IEnumerable)arrayObject;
Expression <Func <string, bool> > contains = x => false;
if (!@in)
{
contains = x => true;
}
foreach (var item in enumerable)
{
var keyValue = _shardingKeyConvert(item);
var eq = _keyToTailWithFilter(keyValue, @in ? ShardingOperatorEnum.Equal : ShardingOperatorEnum.NotEqual);
if (@in)
{
contains = contains.Or(eq);
}
else
{
contains = contains.And(eq);
}
}
return(contains);
}
}
return(x => true);
}
