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https://issues.apache.org/jira/browse/SOLR-8972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15244696#comment-15244696
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Joel Bernstein commented on SOLR-8972:
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Sample syntax for calling the GraphHandler:
http://localhost:8983/solr/collection/graph?expr=gatherNodes(...)
The expression can be an arbitrarily complex nested gatherNodes (SOLR-8925)
expression wrapped by other Streaming Expressions. The graph handler will be
hardcoded to use the graphML response writer.
> Add GraphHandler and GraphMLOutputWriter to support graph visualizations
> ------------------------------------------------------------------------
>
> Key: SOLR-8972
> URL: https://issues.apache.org/jira/browse/SOLR-8972
> Project: Solr
> Issue Type: New Feature
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Fix For: 6.1
>
> Attachments: GraphHandler.java, GraphMLResponseWriter.java
>
>
> SOLR-8925 is shaping up nicely. It would be great if Solr could support
> outputting graphs in GraphML. This will allow users to visualize their graphs
> in a number of graph visualization tools (NodeXL, Gephi, Tulip etc...). This
> ticket will create a new Graph handler which will take a Streaming Expression
> graph traversal and output GraphML. A new GraphMLOutputWriter will handle the
> GraphML formatting. In future releases we can consider supporting other graph
> formats.
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