Hello,
I need to store a list of mixed types in Cassandra. The list may contain
numbers, strings and booleans. So I would need something like list.
Is this possible in Cassandra and if not, what workaround would you suggest
for storing a list of mixed type items? I sketched a few (using a list pe
Use a ByteBuffer value type with your own serialization (we use protobuf
for complex value structures)
On Jun 24, 2014 5:30 AM, "Tuukka Mustonen"
wrote:
> Hello,
>
> I need to store a list of mixed types in Cassandra. The list may contain
> numbers, strings and booleans. So I would need something
1) You can use list of strings which are serialized JSONs, or use
ByteBuffer with your own serialization as Jeremy suggested.
2) Use Cassandra 2.1 (not officially released yet) were there is new
feature of user defined types.
Pavel
On Tue, Jun 24, 2014 at 9:18 AM, Jeremy Jongsma wrote:
> Use
What if I need to query by list items?
1. Jeremy, with blob field (ByteBuffer), I can query exact matches (just
encode the value in query), but greater/less than queries would not work.
Any sort of serialization kills "native" ways to query data
2. Even with user defined types, I would need to def
"Jeremy, with blob field (ByteBuffer), I can query exact matches (just
encode the value in query), but greater/less than queries would not work.
Any sort of serialization kills "native" ways to query data" --> Not
necessarily. You still use "normal" types (uuid, string, timestamp,...) for
clusterin
Unfortunately, I need to query per list items. That's why I'm running
Cassandra 2.1rc1 (offers secondary indexes for collections).
I'm also studying Dynamo, it seems to be somewhat more dynamic by nature
and allows mixed type lists. As I understood it, also Cassandra supports
dynamic schemas, but
On Wed, Jun 25, 2014 at 8:49 AM, Tuukka Mustonen
wrote:
> Unfortunately, I need to query per list items. That's why I'm running
> Cassandra 2.1rc1 (offers secondary indexes for collections).
>
Using a list of blobs does not in any way prevent you from doing that.
Types are constraints on what va
Sorry for confusion, I should have lined my requirements better in the
first place. Let me try to summarize:
- I can use list and query against it using secondary indexes and by
encoding my data on the client side. However, *this only allows exact
matches, not greater/lesser than *for numbers at l
Actually, come to think of it, of course I cannot run greater/less than
queries on list items anyway (would be something like "WHERE items CONTAINS
> 4"), so binary encoding should be fine. Thanks for everybody's input!
Tuukka
On Wed, Jun 25, 2014 at 1:49 PM, Tuukka Mustonen
wrote:
> Sorry for
On Tue, Jun 24, 2014 at 11:49 PM, Tuukka Mustonen wrote:
> Unfortunately, I need to query per list items. That's why I'm running
> Cassandra 2.1rc1 (offers secondary indexes for collections).
>
As a general statement, if you have to use a just added feature in a
pre-release version of the Datast
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