python - Query with paging by cursor causes error because of limitations for "IN filter" in cursor() method... What should be the alternative?

Question

I am developing a twitter like microblogging system by using the following models:

class Member(db.Model):    
    user = db.UserProperty(required=True)
    follower_count = db.IntegerProperty(default=0) # members following you    
    following_count = db.IntegerProperty(default=0) # members you are following

class NewsItem(db.Model):    
    text = db.StringProperty(required=True)
    posted_by = db.ReferenceProperty(reference_class=Member,required=True,collection_name="posted_items")
    posted_on = db.DateTimeProperty(auto_now_add=True)
    status = db.IntegerProperty(default=1) # 0: deleted

class Follow(db.Model):    
    member = db.ReferenceProperty(reference_class=Member,required=True,collection_name="followings")    
    followed_member = db.ReferenceProperty(reference_class=Member,required=True,collection_name="followers")    
    added_on = db.DateTimeProperty(auto_now_add=True) 

In this model structure I retrieve the messages of the members that the current user follows with the following code below:

follow_log_list = Follow.gql('WHERE member = :1 ', member)
followed_member_list = []
for follow_log in follow_log_list:
    followed_member_list.append(follow_log.followed_member)

query = NewsItem.all()
query.filter('posted_by IN', followed_member_list)
query.filter('status =', 1)
query.order('-posted_on')
query.with_cursor(cursor)   
newsList = query.fetch(10)  

template_values['cursor'] = query.cursor()

When query.cursor() method is called I get the following error:

"No cursor available for a MultiQuery (queries using "IN" or "!=" operators)"

This is normal since in the documentation of cursors this limitation is stated clearly as:

http://code.google.com/appengine/docs/python/datastore/queries.html

"You cannot use cursors with queries that use the IN or != filter operators."

What is the alternative way of getting the posts of followed members?

Thank you,

EDIT: The posted messages were filtered by their status and ordered by their posted date... But the sample did not show it in here, I've changed it...

Answer 1

Waitting for answers