stephen mallette created TINKERPOP-2291:
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Summary: TraversalExplanation deserialization in GraphSON
Key: TINKERPOP-2291
URL: https://issues.apache.org/jira/browse/TINKERPOP-2291
Project: TinkerPop
Issue Type: Improvement
Components: io
Affects Versions: 3.3.8
Reporter: stephen mallette
Assignee: stephen mallette
We currently coerce {{TraversalExplanation}} to {{Map}} which works well for
GLVs but doesn't work so well for Java itself where GraphSON deserialization
requires a symmetrical derser operation.
Leads to errors like:
{code}
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not
deserialize the JSON value as required. Nested exception:
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not
deserialize the JSON value as required. Nested exception:
org.apache.tinkerpop.shaded.jackson.databind.exc.UnrecognizedPropertyException:
Unrecognized field "@type" (class
org.apache.tinkerpop.gremlin.process.traversal.util.TraversalExplanation), not
marked as ignorable (one known property: "strategyTraversals"])
at [Source:
(byte[])"{"requestId":"0bcc54dc-87a0-408b-abe0-35678333827e","status":{"message":"","code":200,"attributes":{"@type":"g:Map","@value":["host","/127.0.0.1:50299"]}},"result":{"data":{"@type":"g:List","@value":[{"@type":"g:TraversalExplanation","@value":{"@type":"g:Map","@value":["original",{"@type":"g:List","@value":["GraphStep(vertex,[])"]},"intermediate",{"@type":"g:List","@value":[{"@type":"g:Map","@value":["traversal",{"@type":"g:List","@value":["GraphStep(vertex,[])"]},"strategy","ConnectiveStrategy""[truncated
2707 bytes]; line: 1, column: 254] (through reference chain:
org.apache.tinkerpop.gremlin.process.traversal.util.TraversalExplanation["@type"])
at [Source:
(byte[])"{"requestId":"0bcc54dc-87a0-408b-abe0-35678333827e","status":{"message":"","code":200,"attributes":{"@type":"g:Map","@value":["host","/127.0.0.1:50299"]}},"result":{"data":{"@type":"g:List","@value":[{"@type":"g:TraversalExplanation","@value":{"@type":"g:Map","@value":["original",{"@type":"g:List","@value":["GraphStep(vertex,[])"]},"intermediate",{"@type":"g:List","@value":[{"@type":"g:Map","@value":["traversal",{"@type":"g:List","@value":["GraphStep(vertex,[])"]},"strategy","ConnectiveStrategy""[truncated
2707 bytes]; line: 1, column: 253]
at [Source:
(byte[])"{"requestId":"0bcc54dc-87a0-408b-abe0-35678333827e","status":{"message":"","code":200,"attributes":{"@type":"g:Map","@value":["host","/127.0.0.1:50299"]}},"result":{"data":{"@type":"g:List","@value":[{"@type":"g:TraversalExplanation","@value":{"@type":"g:Map","@value":["original",{"@type":"g:List","@value":["GraphStep(vertex,[])"]},"intermediate",{"@type":"g:List","@value":[{"@type":"g:Map","@value":["traversal",{"@type":"g:List","@value":["GraphStep(vertex,[])"]},"strategy","ConnectiveStrategy""[truncated
2707 bytes]; line: 1, column: 253] (through reference chain:
java.util.LinkedHashMap["result"]->java.util.LinkedHashMap["data"])
{code}
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