Difference between riakc_obj and riak_object
Hi All, I am using the erlang protocol buffers client which uses riakc_obj to handle riak objects. As I understand riak uses riak_object internally. Looking at the functions the modules look almost identical. Why is it done that way? Thanks, Florian smime.p7s Description: S/MIME cryptographic signature ___ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
Re: Maven Artifact for Java protocol Buffers
Hello Abhishek, Sorry for the delay here. On Tue, Feb 1, 2011 at 2:34 AM, Abhishek Kona wrote: > Hi > > Is there a maven artifact available for the Java protocol buffers > (riak-java-pb-client) . > The latest release of the Java client (0.14) has protocol buffer support and is available in the Sonatype Maven Repo. https://oss.sonatype.org/index.html#nexus-search;quick~riak Mark ___ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
Removing link from children to parent object
Hi all, I have a link between Parent object and Child objects e.g: Parent -- Child1 -- Child2 -- Child3 Now when I delete Parent, I want the links from Child to Parent to be removed as well. I can traverse/loop through all the Children that Parent have and remove the link one by one, but I was thinking if there is a more elegant way to do it in Riak that I don't know. I am using the Ruby Riak/Ripple library. Thanks for your help. Kind regards, Joshua. -- http://twitter.com/jpartogi ___ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
Re: Removing link from children to parent object
Riak links are unidirectional and non-reciprocal. If you did not explixitly set a link on the child to the parent then it does not exist. If you did set links on the children then a traversal/loop will work but remember to include the body (value) in the rewrite. Write links + body or you lose the body. -alexander On 2011-02-06, Joshua Partogi wrote: > Hi all, > > I have a link between Parent object and Child objects > e.g: > > Parent > -- Child1 > -- Child2 > -- Child3 > > Now when I delete Parent, I want the links from Child to Parent to be > removed as well. > > I can traverse/loop through all the Children that Parent have and remove the > link one by one, but I was thinking if there is a more elegant way to do it > in Riak that I don't know. > > I am using the Ruby Riak/Ripple library. > > Thanks for your help. > > Kind regards, > Joshua. > > -- > http://twitter.com/jpartogi > -- Sent from my mobile device ___ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
Re: Removing link from children to parent object
Thanks Alexander, Is there any facility in riak that enables me to do something like this: UPDATE obj set link=nil where link='Blah'; Kind regards, Joshua On Sun, Feb 6, 2011 at 5:51 PM, Alexander Sicular wrote: > Riak links are unidirectional and non-reciprocal. If you did not > explixitly set a link on the child to the parent then it does not > exist. If you did set links on the children then a traversal/loop will > work but remember to include the body (value) in the rewrite. Write > links + body or you lose the body. > > -alexander > > On 2011-02-06, Joshua Partogi wrote: > > Hi all, > > > > I have a link between Parent object and Child objects > > e.g: > > > > Parent > > -- Child1 > > -- Child2 > > -- Child3 > > > > Now when I delete Parent, I want the links from Child to Parent to be > > removed as well. > > > > I can traverse/loop through all the Children that Parent have and remove > the > > link one by one, but I was thinking if there is a more elegant way to do > it > > in Riak that I don't know. > > > > I am using the Ruby Riak/Ripple library. > > > > Thanks for your help. > > > > Kind regards, > > Joshua. > > > > -- > > http://twitter.com/jpartogi > > > > -- > Sent from my mobile device > -- http://twitter.com/jpartogi ___ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
Re: Removing link from children to parent object
Oh hell no. But in practice that all depends on the client (you could theoretically have a client that understood some SQL dialect and translated it to riak speak). You would have to do an m/r to get a list of all keys that have that link (which hopefully you have already been maintaining) and then update each key individually. But what you should really do is update your application to accommodate dead links. They will return 404 via http and you can update your m/r's to also skip non existent keys. Key management, which link management really boils down to is a bit of a beast in riak. Best left to other devices. I've said it before and I'll say it again: do key management in redis and periodically dump keys to riak. Mark and sweep is a good protocol for doing this stuff via a right proper queue stack... or redis. -Alexander @siculars on twitter http://siculars.posterous.com Sent from my iPhone On Feb 6, 2011, at 2:01, Joshua Partogi wrote: Thanks Alexander, Is there any facility in riak that enables me to do something like this: UPDATE obj set link=nil where link='Blah'; Kind regards, Joshua On Sun, Feb 6, 2011 at 5:51 PM, Alexander Sicular wrote: Riak links are unidirectional and non-reciprocal. If you did not explixitly set a link on the child to the parent then it does not exist. If you did set links on the children then a traversal/loop will work but remember to include the body (value) in the rewrite. Write links + body or you lose the body. -alexander On 2011-02-06, Joshua Partogi wrote: > Hi all, > > I have a link between Parent object and Child objects > e.g: > > Parent > -- Child1 > -- Child2 > -- Child3 > > Now when I delete Parent, I want the links from Child to Parent to be > removed as well. > > I can traverse/loop through all the Children that Parent have and remove the > link one by one, but I was thinking if there is a more elegant way to do it > in Riak that I don't know. > > I am using the Ruby Riak/Ripple library. > > Thanks for your help. > > Kind regards, > Joshua. > > -- > http://twitter.com/jpartogi > -- Sent from my mobile device -- http://twitter.com/jpartogi ___ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
