Archive for the ‘Pipes’ Category

TinkerPop 2.4.0 Released (Gremlin Without a Cause)

Friday, August 9th, 2013

TinkerPop 2.4.0 Released (Gremlin Without a Cause) by Marko A. Rodriguez.

From the post:

TinkerPop 2.4.0 has been released under the name “Gremlin without a Cause” (see attached logo). The last release was back in March of 2013, so there are lots of new features/bugfixes/optimizations in the latest 2.4.0 release. Here is the best-of-the-best of each project along with the full release notes.

NOTE: 2.4.0 jars have been deployed to Apache Central Repo and ready for inclusion.

Another offering for your summer holiday enjoyment!

TinkerPop 2.3.0 has been unleashed

Thursday, March 21st, 2013

TinkerPop 2.3.0 has been unleashed by Marko A. Rodriguez.

Release notes for:

Blueprints

Pipes

Gremlin

Frames

Rexster

Enjoy!

TinkerPop2 Release

Thursday, May 24th, 2012

A message from Marko Rodriguez announced the release of TinkerPop2 with notes on the major features of each:

Blueprints: https://github.com/tinkerpop/blueprints/wiki/Release-Notes
– Massive changes to blueprints-core API
Pipes: https://github.com/tinkerpop/pipes/wiki/Release-Notes
– TreePipe added for exposing the spanning tree of a traversal
Gremlin: https://github.com/tinkerpop/gremlin/wiki/Release-Notes
– Automatic path and query optimizations
https://github.com/tinkerpop/gremlin/downloads (download)
Frames: https://github.com/tinkerpop/frames/wiki/Release-Notes
– FramedGraph is simply a wrapper graph in the Blueprints sense
Rexster: https://github.com/tinkerpop/rexster/wiki/Release-Notes
– Synchronicity with the Blueprints API
https://github.com/tinkerpop/rexster/downloads (download)

BTW, Marko says:

As you may know, there are big changes to the API: package renaming, new core API method names, etc. While this may be shocking, it is all worth it. In 2 weeks, there is going to be a release of something very big for which TinkerPop2 will be a central piece of the puzzle. Stay tuned and get ready for a summer of insane, crazy graph madness.

So, something to look forward to!

Jogger: almost like named_scopes

Sunday, March 4th, 2012

Jogger: almost like named_scopes

From the post:

We talked about graph databases in this and this blog post. As you might have read we’re big fans of a graph database called neo4j, and we’re using it together with JRuby. In this post we’ll share a little piece of code we created to make expressing graph traversals super easy and fun.

Jogger – almost like named_scopes

Jogger is a JRuby gem that enables lazy people to do very expressive graph traversals with the great pacer gem. If you don’t know what the pacer gem is, you should probably check pacer out first. (And don’t miss the pacer section at the end of the post.)

Remember the named_scopes from back in the days when you were using rails? Jogger gives you named traversals and is a little bit like named scopes. Jogger groups multiple pacer traversals together and give them a name. Pacer traversals are are like pipes. What are pipes? Pipes are great!!

The most important conceptual difference is, that the order in which named traversals are called matter, while it usually doesn’t matter in which order you call named scopes.

A nice way to make common traversals accessible by name.

Does the “order of calling” scopes in topic maps matter? At least for the current TMDM I think not because scopes are additive. That is the value covered by a set of scopes must be valid in each scope individually.

A TinkerPop Story

Wednesday, December 14th, 2011

A TinkerPop Story

From the post:

In a time long, long right now and a place far, far within, there exists a little green gremlin named…well, Gremlin. Gremlin lives in a place known as TinkerPop. For those who think of a “place” as some terrestrial surface coating a sphere that is circling one of the many massive fiery nuclear reactors in the known universe, TinkerPop is that, yet at the same time, a wholly different type of place indeed.

In a day of obscure (are there any other kind?) errors and annoyances, this is an absolute delight!

Highly recommended!

TinkerPop 2011 Winter release!

Friday, December 9th, 2011

TinkerPop 2011 Winter release!

Which includes:

New homepage design: http://tinkerpop.com

Blueprints 1.1 (Blueberry):
https://github.com/tinkerpop/blueprints/wiki/Release-Notes

Frames 0.6 (Truss):
https://github.com/tinkerpop/frames/wiki/Release-Notes

Gremlin 1.4 (Ain’t No Thing But a Chicken Wing):
https://github.com/tinkerpop/gremlin/wiki/Release-Notes

Pipes 0.9 (Sink):
https://github.com/tinkerpop/pipes/wiki/Release-Notes

Rexster 0.7 (Brian)
https://github.com/tinkerpop/rexster/wiki/Release-Notes

Rexster-Kibbles 0.7
http://rexster-kibbles.tinkerpop.com

You didn’t really want to spend all weekend holiday shopping and hanging out with relatives did you? 😉

Dataflow Programming:…

Monday, October 10th, 2011

Dataflow Programming: Handling Huge Data Loads Without Adding Complexity by Jim Falgout.

From the post:

Because the dataflow operators in a graph work in parallel, the model allows overlapping I/O operations with computation. This is a “whole application” approach to parallelization as opposed to many thread-oriented performance frameworks that focus on hot sections of code such as for loops. This addresses a key problem in processing “big data” for today’s many-core processors: feeding data fast enough to the processors.

While dataflow does this, it scales down easily as well. This distinguishes it from technologies, such as Hadoop and to a lesser extent, Map Reduce, which don’t scale downward well due to their innate complexity.

We’ve discussed how a dataflow architecture exploits multicore. These same principles can be applied to multi-node clusters by extending dataflow queues over networks with a dataflow graph executed on multiple systems in parallel. The compositional model of building dataflow graphs allows for replication of pieces of the graph across multiple nodes. Scaling out extends the reach of dataflow to solve large data problems.

Read the first comment. By J.P. Morrison, author of Flow Based Programming, the inspiration for Pipes. (Shamelessly repeated from a post by Marko Rodriguez on the gremlin-users list, Achim first noticed the article.)

Be aware that Amazon lists the Kindle edition for \$29.00 and a hardback edition for \$69.00. Sadly one reader reports the book has no index?

An Introduction to Tinkerpop

Saturday, October 8th, 2011

An Introduction to Tinkerpop by Takahiro Inoue.

Excellent introduction to the Tinkerpop stack.

Furnace — A Property Graph Algorithms Package

Sunday, September 25th, 2011

Furnace — A Property Graph Algorithms Package

Marko Rodriguez posted the following note to the Grelim-users mailing list today:

Hello,

For many months, the TinkerPop community has been trying to realize the best way to go about providing a graph analysis package to the TinkerPop stack ( http://bit.ly/qCMlcP ). With the increased flexibility and power of Pipes and the partitioning of Gremlin into multiple JVM languages, we feel that the stack is organized correctly now to support Furnace — A Property Graph Algorithms Package.

http://furnace.tinkerpop.com
( https://github.com/tinkerpop/furnace/wiki if the domain hasn’t propagated to your DNS yet )

The project is currently just stubbed, but overtime you can expect the ability to evaluate standard (and non-standard) graph analysis algorithms over Blueprints-enabled graphs in a way that respects explicit and implicit associations in the graph. In short, it will implement the ideas articulated in:

http://markorodriguez.com/2011/02/08/property-graph-algorithms/
http://arxiv.org/abs/0806.2274

This will be possible due to Pipes and the ability to represent abstract relationships using Pipes, Gremlin_groovy (and the upcoming Gremlin_scala). Moreover, while more thought is needed, there will be a way to talk at the Frames-levels (http://frames.tinkerpop.com) and thus, calculate graph algorithms according to one’s domain model. Ultimately, in time, as Furnace develops, we will see a Rexster-Kibble that supports the evaluation of algorithms via Rexster.

While the project is still developing, please feel free to contribute ideas and/or participate in the development process. To conclude, we hope people are excited about the promises that Furnace will bring by raising the processing abstraction level above the imperative representations of Pipes/Gremlin.

Thank you,
Marko.

http://markorodriguez.com

You have been waiting for the opportunity to contribute to the Tinkerpop stack, particularly on graph analysis, so here is your chance! Seriously, you need to forward this to every graph person, graph project and graduate student taking graph theory.

We can use simple graphs and hope (pray?) the world is a simple place. Or use more complex graphs to model the world. Do you feel lucky? Do you?

On the Nature of Pipes

Sunday, August 7th, 2011

On the Nature of Pipes by Marko Rodriguez.

From the post:

Pipes is a data flow framework developed by TinkerPop. The graph traversal language Gremlin is a Groovy-based domain-specific language for processing Blueprints-enabled graph databases with Pipes. Since the release of Pipes 0.7 on August 1, 2011, much of the functionality in Gremlin has been generalized and made available through Pipes. This has opened up the door for other JVM languages (e.g. JRuby, Jython, Clojure, etc.) to serve as host languages for graph traversal DSLs. In order to promote this direction, this post will explain Pipes from the vantage point of Gremlin.

You may not be a graph database enthusiast after reading Marko’s post but you will increase your understanding of them.

That you are not then a graph database enthusiast will be your own fault. 😉

TinkerPop – New Releases

Monday, August 1st, 2011

Good news from Marko Rodriguez:

TinkerPop just released a new round of stable releases.

Blueprints 0.9 (Mavin) – https://github.com/tinkerpop/blueprints/wiki/Release-Notes

Pipes 0.7 (PVC) – https://github.com/tinkerpop/pipes/wiki/Release-Notes

Frames 0.4 (Studs) – https://github.com/tinkerpop/frames/wiki/Release-Notes

Gremlin 1.2 (New Sheriff in Town) – https://github.com/tinkerpop/gremlin/wiki/Release-Notes

Rexster 0.5 (Dog Star) – https://github.com/tinkerpop/rexster/wiki/Release-Notes

Here is the main points with each release:

  • Blueprints:
    • Vertex API changed so now you have Vertex.getInEdges(String… labels) and Vertex.getOutEdges(String… labels)
    • Heavy development on GraphSail which turns any IndexableGraph into Sail RDF store
  • Pipes:
    • Introduced PipeClosure pattern which allows for closure-based pipes in native Java
    • Migrated all “Gremlin-specific pipes” (closure-based) to Pipes
    • Opening up the stage for data flow traversal languages for any JVM language
  • Frames:
    • Added helper interfaces VertexFrame and EdgeFrame
  • Gremlin:
    • Support the easy definition of new steps with
      Gremlin.defineStep()
    • Mass migration of all “Gremlin-specific pipes” to Pipes
    • Support for processing closures in aggregate, groupCount, and paths
  • Rexster:
    • Added RexPro (the future foundation for the Rexster’s multi-protocol infrastructure).
    • Added rexster-console.sh (RexsterConsole) to allow remote “mysql>”-style interactions via any JSR 223-based JVM language
    • JSON serialization inherited from Blueprints (consistent throughout TinkerPop stack)

OrientDB 1.0rc3 – Graph(Ed)

Friday, July 15th, 2011

OrientDB 1.0rc3 – Graph(Ed)

From the webpage:

This is a special edition of OrientDB with these TinkerPop technologies in bundle:

  • Blueprints provides a collection of interfaces and implementations to common, complex data structures. In short, Blueprints provides a one stop shop for implemented interfaces to help developers create software without being tied to particular underlying data management systems.
  • Gremlin is a Turing-complete, graph-based programming language designed for key/value-pair multi-relational graphs. Gremlin makes use of an XPath-like syntax to support complex graph traversals. This language has application in the areas of graph query, analysis, and manipulation.
  • Pipes is a graph-based data flow framework for Java 1.6+. A process graph is composed of a set of process vertices connected to one another by a set of communication edges. Pipes supports the splitting, merging, and transformation of data from input to output.

The graph community just keeps getting stronger.

Cloning Tinkerpop Repositories

Friday, July 1st, 2011

Instructions on creating a local copy of the Gremlin wiki (posted to the gremlin-users@googlegroups.com mailing list by Pierre De Wilde).

The instructions (with minor formatting changes) from his post:

For those who want a local copy of Gremlin wiki:

cd gremlin
git clone https://github.com/tinkerpop/gremlin.wiki.git
  doc/wiki
cd doc/wiki
gollum

Open your browser at http://localhost:4567 and ta-da…

Moreover, the wiki is searchable and (unlike the github version) it’s printer-fiendly.

Gollum is a simple wiki system built on top of Git that powers GitHub Wikis.

https://github.com/github/gollum

To install Gollum, use RubyGems (http://rubygems.org/):

[sudo] gem install gollumcd cd

Of course, the same procedure may be applied for other Tinkerpop repositories (blueprints, pipes, frames, rexster, rexster-kibbles).

Unfortunately, gollum cannot access multiple repositories at once, so you will need to launch several versions with a different port (gollum -port xxxx)

Thanks Pierre!

TinkerPop Releases – Gremlin 1.0/Rexster 0.3

Monday, May 9th, 2011

Marko Rodriguez announced the release of Gremlin 1.0 and Rexster 0.3 (graph server) along with other releases:

Blueprints 0.7 (Patrick):
https://github.com/tinkerpop/blueprints/wiki/Release-Notes
A property graph interface.

Frames 0.2 (Huff and Puff):
https://github.com/tinkerpop/frames/wiki/Release-Notes
An object to graph framework.

Gremlin 1.0 (Gremlin):
https://github.com/tinkerpop/gremlin/wiki/Release-Notes
A graph traversal language.

Pipes 0.5 (Drain):
https://github.com/tinkerpop/pipes/wiki/Release-Notes
A data flow framework using process graphs.

Rexster 0.3 (Dog Eat Dog):
https://github.com/tinkerpop/rexster/wiki/Release-Notes
A RESTful graph shell.

The Path-o-Logical Gremlin

Saturday, April 16th, 2011

The Path-o-Logical Gremlin

Slides from Marko Rodriguez presented at: The 2nd International Workshop on Graph Data Management (GDM’11) Hannover, Germany April 16, 2011.

State of Gremlin 0.9.

Very good introduction to Gremlin.

Tinkerpop – New Releases

Monday, April 4th, 2011

Tinkerpop – New Releases

From the release notes:

Blueprints 0.6 Oscar: https://github.com/tinkerpop/blueprints/wiki/Release-Notes
Pipes 0.4 Spigot: https://github.com/tinkerpop/pipes/wiki/Release-Notes
Frames 0.1 Brick-by-Brick: https://github.com/tinkerpop/frames/wiki/Release-Notes
Gremlin 0.9 Gremlin the Grouch: https://github.com/tinkerpop/gremlin/wiki/Release-Notes

TinkerPop Updates

Thursday, March 3rd, 2011

From the update announcement on 1 March 2011.

Today we bring you a new round of releases. TinkerPop is pleased to announce:

Blueprints 0.5 (Scooby) – https://github.com/tinkerpop/blueprints/wiki/Release-Notes
Pipes 0.3.1 (Mario) – https://github.com/tinkerpop/pipes/wiki/Release-Notes
Gremlin 0.8 (Grem Stefani) – https://github.com/tinkerpop/gremlin/wiki/Release-Notes
Rexster 0.2 (Dog House) – https://github.com/tinkerpop/rexster/wiki/Release-Notes

The graph database work and associated materials is looking more and more attractive.

Look for something specific about applying them to topic maps in the near term.