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stephen mallette closed TINKERPOP-2291. --------------------------------------- Fix Version/s: 3.4.4 3.3.9 3.5.0 Resolution: Fixed > TraversalExplanation deserialization in GraphSON > ------------------------------------------------ > > Key: TINKERPOP-2291 > URL: https://issues.apache.org/jira/browse/TINKERPOP-2291 > Project: TinkerPop > Issue Type: Bug > Components: io > Affects Versions: 3.3.8 > Reporter: stephen mallette > Assignee: stephen mallette > Priority: Major > Fix For: 3.5.0, 3.3.9, 3.4.4 > > > 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} -- This message was sent by Atlassian Jira (v8.3.2#803003)