Marko A. Rodriguez created TINKERPOP-1290:
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Summary: Create VertexProgramInterceptor as a pattern for
GraphComputer strategies.
Key: TINKERPOP-1290
URL: https://issues.apache.org/jira/browse/TINKERPOP-1290
Project: TinkerPop
Issue Type: Improvement
Components: process
Affects Versions: 3.2.0-incubating
Reporter: Marko A. Rodriguez
This is all being done in branch TINKERPOP-1288, but want to have a ticket for
this feature for the release notes.
A {{VertexProgramInterceptor}} can be used by a {{GraphComputer}} provider to
NOT run a {{VertexProgram}} given some introspection into it. Instead, it can
solve the {{VertexProgram}}'s problem using native methods instead of the
overhead of the Gremlin OLAP {{GraphComputer}} semantics. The basic pattern is:
{code}
if(interceptor != null) {
interceptor.apply(vertexProgram, graph, memory);
} else {
while(!vertexProgram.terminate(memory)) {
vertexProgram.execute(...)
}
}
{code}
Thus far there is {{SparkStarBarrierInterceptor}} that can do Spark DSL
computations for local star graph traversals that end with a
{{ReducingBarrierStep}}.
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