Ensure that subclassing BasicVertex is possible by user apps
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Key: GIRAPH-36
URL: https://issues.apache.org/jira/browse/GIRAPH-36
Project: Giraph
Issue Type: Improvement
Components: graph
Affects Versions: 0.70.0
Reporter: Jake Mannix
Assignee: Jake Mannix
Priority: Blocker
Fix For: 0.70.0
Original assumptions in Giraph were that all users would subclass Vertex (which
extended MutableVertex extended BasicVertex). Classes which wish to have
application specific data structures (ie. not a TreeMap<I, Edge<I,E>>) may need
to extend either MutableVertex or BasicVertex. Unfortunately VertexRange
extends ArrayList<Vertex>, and there are other places where the assumption is
that vertex classes are either Vertex, or at least MutableVertex.
Let's make sure the internal APIs allow for BasicVertex to be the base class.
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