Re: Long type column names in reverse order

2012-04-21 Thread Tamar Fraenkel
Maybe I don't get what you are trying to do, but using Cassandra and Hector, what I do is: I have the following column family definition CREATE COLUMN FAMILY CF_NAME with comparator = 'CompositeType(LongType(reversed=true),UUIDType)' and default_validation_class = 'UTF8Type' and key_val

Re: Long type column names in reverse order

2012-04-20 Thread Tarun Gupta
Thanks, This post helped a lot, I discovered that the built-in comparators have a static instance called *reverseComparator.* My exact requirement was to create an API that allows creating a Column family with the required parameters, one such parameter was a flag that indicates the column order. I

Re: Long type column names in reverse order

2012-04-20 Thread Edward Capriolo
I think you can drop the compiler since that feature already exists. http://thelastpickle.com/2011/10/03/Reverse-Comparators/ On Fri, Apr 20, 2012 at 12:57 PM, Tarun Gupta wrote: > Hi, > > My requirements is to get retrieve column values, sorted by column names in > reverse order (column names

Re: long type

2010-05-22 Thread huajun qi
Thanks!

RE: long type

2010-05-22 Thread Dop Sun
://code.google.com/p/jassandra/source/browse/trunk/org.softao.jassandra/ src/org/softao/jassandra/ByteArray.java This ByteArray can give you something about converting. From: huajun qi [mailto:qih...@gmail.com] Sent: Sunday, May 23, 2010 10:11 AM To: user@cassandra.apache.org Subject: Re: long type

Re: long type

2010-05-22 Thread huajun qi
Then what kink of column name should I use? 2010/5/23 Dop Sun > CompareWith defines type for column name/ super column name, and at the > moment, key should be always String. > > > > *From:* huajun qi [mailto:qih...@gmail.com] > *Sent:* Saturday, May 22, 2010 10:19 PM > *To:* user@cassandra.apa

RE: long type

2010-05-22 Thread Dop Sun
CompareWith defines type for column name/ super column name, and at the moment, key should be always String. From: huajun qi [mailto:qih...@gmail.com] Sent: Saturday, May 22, 2010 10:19 PM To: user@cassandra.apache.org Subject: long type I set the "CompareWith" property to "longtype", but