Vertex reader that reads adjacency lists with no vertex and edge values
associated
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Key: GIRAPH-160
URL: https://issues.apache.org/jira/browse/GIRAPH-160
Project: Giraph
Issue Type: New Feature
Components: lib
Affects Versions: 0.1.0
Reporter: Dionysios Logothetis
Priority: Minor
A very common format of graphs is adjacency lists with no values associated to
edges or vertices. For instance a line in the input can be of the type:
1 2 3
which represents a vertex with id 1 that has edges to vertices 2 and 3 with no
values associated.
I've created a vertex reader named AdjacencyListVertexReader which is
essentially a copy of the AdjacencyListVertexReader modified to handle this
format. It's an abstract class and subclasses can override the
defaultVertexValue() and defaultEdgeValue() methods to provide default values
for vertices and edges correspondingly (otherwise values are initialized to
null).
I've also created an example subclass.
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