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Pipes: A Data Flow Framework using Process Graphs
http://pipes.tinkerpop.com

```xml

tinkerpop-repository
TinkerPop Maven2 Repository
http://tinkerpop.com/maven2

```

Version 0.6 (NOT OFFICIALLY RELEASED YET)

```xml

com.tinkerpop
pipes
0.6-SNAPSHOT

```

Version 0.5 (Drain — May 8, 2011)

```xml

com.tinkerpop
pipes
0.5

```

  • Added OutPipe, InPipe, and BothPipe to allow for vertex-vertex hoping
  • Removed VertexEdgeLabelFilterPipe as it is now covered by more efficient pipes
  • Added the MetaPipe interface to allow pipes to acknowledge pipe wrapping
  • Added CopySplitPipe, ExhaustMergePipe, and FairMergePipe
  • Optimized PropertyPipe and UniquePathFilterPipe
  • Added support for Pipe.reset() and thus, pipe reuse

Version 0.4 (Spigot — April 4, 2011)

```xml

com.tinkerpop
pipes
0.4

```

  • Added StartPipe to aid in creating an Object-to-Pipe converter
  • Removed VertexEdge and EdgeVertex pipes for more low-level/faster pipes.
  • Supports new Blueprints packaging scheme.

Version 0.3.1 (Mario — March 2, 2011)

```xml

com.tinkerpop
pipes
0.3.1

```

  • Added VertexEdgeLabelFilterPipe to reflect Blueprints Vertex API update
  • Added UniquePathFilterPipe to filter paths that have visited the same object twice

Version 0.3 (Mario — January 22, 2011)

```xml

com.tinkerpop
pipes
0.3

```

  • Added a general toString() model to articulate pipe construction
  • Redesigned path-model to where enablePaths() no longer required
    • Added HistoryIterator to replace the enablePath() model
  • Renamed CountCombine to GroupCount
  • Added ExpandableIterator to support pipe looping
  • Removed many unused pipes for the sake of clarity and simplicity
  • Added GatherPipe as a composite of SideEffectCapPipe and AggregatorPipe
  • Removed EndSupportPipe as that is what ScatterPipe now accomplishes

Version 0.2 (Clogged — December 14, 2010)

```xml

com.tinkerpop
pipes
0.2

```

  • Added path functionality to get the path pipe traversed
    • Added PathSequence path utility
    • Added PathPipe to support using paths in a computation
  • Numerous test cases added

Version 0.1.1 (Leaky — October 28, 2010)

```xml

com.tinkerpop
pipes
0.1.1

```

  • Fixed ‘reset pipe’ issue in FutureFilterPipe

Version 0.1 (Leaky — September 22, 2010)

```xml

com.tinkerpop
pipes
0.1

```

  • Initial release as the core engine for Gremlin 0.5