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https://issues.apache.org/jira/browse/CASSANDRA-2231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-2231:
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Attachment: 0001-Add-compositeType-and-DynamicCompositeType-v4.patch
v4 is rebased against current trunk and add the decompose function (which
simply returns it's argument as Ed suggested).
Not that as far as jdbc is concerned, composite type manipulate binary data for
now. I'm sure we can do better but I'll gladly leave that to further
improvements.
> Add CompositeType comparer to the comparers provided in
> org.apache.cassandra.db.marshal
> ---------------------------------------------------------------------------------------
>
> Key: CASSANDRA-2231
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2231
> Project: Cassandra
> Issue Type: New Feature
> Components: Contrib
> Reporter: Ed Anuff
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 0.8.1
>
> Attachments:
> 0001-Add-compositeType-and-DynamicCompositeType-v2.patch,
> 0001-Add-compositeType-and-DynamicCompositeType-v3.patch,
> 0001-Add-compositeType-and-DynamicCompositeType-v4.patch,
> 0001-Add-compositeType-and-DynamicCompositeType_0.7.patch,
> CompositeType-and-DynamicCompositeType.patch,
> edanuff-CassandraCompositeType-1e253c4.zip
>
>
> CompositeType is a custom comparer that makes it possible to create
> comparable composite values out of the basic types that Cassandra currently
> supports, such as Long, UUID, etc. This is very useful in both the creation
> of custom inverted indexes using columns in a skinny row, where each column
> name is a composite value, and also when using Cassandra's built-in secondary
> index support, where it can be used to encode the values in the columns that
> Cassandra indexes. One scenario for the usage of these is documented here:
> http://www.anuff.com/2010/07/secondary-indexes-in-cassandra.html. Source for
> contribution is attached and has been previously maintained on github here:
> https://github.com/edanuff/CassandraCompositeType
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