Hello,
Here are notes to peoples comments thus far:
1. TinkerPop2 (prior to Apache) maintained all the vendor connectors.
This was very burdensome for the TinkerPop developers as we had to stay up to
date on each vendors changes. We didn't want to go down this road for
TinkerPop3 (now Apache).
2. However, we are interested in providing two "reference
implementations" of TinkerPop. One for OLTP (Neo4j) and one for OLAP (Hadoop).
We think providing Neo4j and Hadoop "out of the box" is a good thing for
TinkerPop as it provides other vendors code to look at ("ah, thats how they did
transactions for Neo4j -- okay, I will copy that pattern") and users a starting
point ("okay, lets load my data into Neo4j by following the examples in the
docs.").
3. Note that TinkerPop3 does NOT "depend" on Neo4j. neo4j-gremlin is
simply a parallel module that can be ":install"'d by the user if they want. If
the user doesn't want it, its not in their CLASSPATH, etc. Likewise for
hadoop-gremlin. However, in our docs, we like to show both Neo4j and Hadoop as
it provides more context to TinkerPop -- not just, "here is an API you can use,
good luck." So, if a user is using, lets say, titan-gremlin, there is NOTHING
"Neo4j" in their CLASSPATH, <depedency/>, etc. TinkerPop doesn't NEED Neo4j.
-- you can see how hadoop-gremlin requires an :install (not something
that is part of TinkerPop):
http://tinkerpop.incubator.apache.org/docs/3.0.0.M8-incubating/#hadoop-gremlin
4. TinkerPop is not trying to push Neo4j in order to boost Neo4j's
worth in any way. Realize that many of the TinkerPop contributors work for a
Neo4j competitor (Titan (Aurelius) -> DSE Graph (DataStax)). We are not here to
play "money games" but to make sure the graph community has graph technology.
Neo4j is an easy, stable, popular graph database with a simple <dependency/>
and you are off.
5. We planned on giving Neo4j neo4j-gremlin so they could release it as
they wish. However, this leaves a hole in our product as then we have
hadoop-gremlin as a reference implementation of OLAP, but no OLTP counterpart.
This is sorta awkward. If we gutted neo4j-gremlin, we would then want to gut
hadoop-gremlin…. However, we really don't want to do that. We think having
these two connectors available with each release makes TinkerPop easier for
users and vendors to adopt TinkerPop.
I hope this clears things up. Please ask more questions if not.
Thank you,
Marko.
http://markorodriguez.com
On Apr 30, 2015, at 3:35 AM, Bertrand Delacretaz <bdelacre...@apache.org> wrote:
> Hi,
>
> On Tue, Apr 28, 2015 at 5:33 PM, Marko Rodriguez <okramma...@gmail.com> wrote:
>> ...In short, TinkerPop would depend on an Apache2 licensed neo4j-api. Some
>> manual
>> downloads from testers/users would be required to use the tinkerpop-neo4j
>> component
>> with a Neo4j database....
>
> That sounds ok to me as long as that's an optional component of TinkerPop.
>
> -Bertrand
>
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