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https://issues.apache.org/jira/browse/CASSANDRA-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13405128#comment-13405128
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Pavel Yaskevich commented on CASSANDRA-3647:
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Here is my comments/questions after code review:
# *AbstractType* Wouldn't it be a good idea to add a "boolean
isCollectionType()" method which by default would return "false"? That would
allow to avoid "instanceof" checks which are done all over the place. It's
probably time to do the same for CompositeType as we get more and more
instanceof checks for it as well.
# *TypeParser* method "stringifyCollectionsParameters" - The following is not
DRY as the same actions repeated in all clauses, when to append(',') could be
distinguished with a condition instead of code duplication.
# *Value* I think we should add a way to distinguish between different types of
values without using "instanceof" all them. In combination with common
iteration method (asList() from the last patch) for all of them that would
allow to remove "instanceof" checks and "cast" everywhere.
# *UpdateStatement* starting from line _199_ - only difference between
"instanceof" cases is pre-validation which could be added to the separate
method in Value for example and "addMutation" call with different types this
also proves previous point about Value.
# *UpdateStatement* "mutationForKey" method - do we need to enforce using
"group" as a last parameter all the time, even when we set it to "null" ?
# *UpdateStatement* line _407_ "definition" should be "definitions"
# *CollectionType* line _89_ *ListType* line _147_ "argument" should be
"arguments"
> Support set and map value types in CQL
> --------------------------------------
>
> Key: CASSANDRA-3647
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3647
> Project: Cassandra
> Issue Type: New Feature
> Components: API, Core
> Reporter: Jonathan Ellis
> Assignee: Sylvain Lebresne
> Labels: cql
> Fix For: 1.2
>
>
> Composite columns introduce the ability to have arbitrarily nested data in a
> Cassandra row. We should expose this through CQL.
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