Serialization of Byte and Short types

[ghost]

I need to serialize Byte and Short types using GraphSon. Does JanusGraph have some IoRegistries for these tasks? Because I get an error while executing this script:

GraphSONMapper.
	build().
	version(GraphSONVersion.V3_0).
	addRegistry(JanusGraphIoRegistry.instance()).
	create().
	createMapper().
	writeValueAsString(g.V().valueMap().toList())

Could not find a type identifier for the class : class java.lang.Byte. Make sure the value to serialize has a type identifier registered for its class.
Type ':help' or ':h' for help.
Display stack trace? [yN]y
java.lang.IllegalArgumentException: Could not find a type identifier for the class : class java.lang.Byte. Make sure the value to serialize has a type identifier registered for its class.
	at org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeIdResolver.idFromValueAndType(GraphSONTypeIdResolver.java:82)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeSerializerV3d0.writeTypePrefix(GraphSONTypeSerializerV3d0.java:83)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.std.StdScalarSerializer.serializeWithType(StdScalarSerializer.java:44)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:2656)
	at org.apache.tinkerpop.shaded.jackson.core.base.GeneratorBase.writeObject(GeneratorBase.java:381)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$ListJacksonSerializer.serialize(JavaUtilSerializersV3d0.java:127)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$ListJacksonSerializer.serializeWithType(JavaUtilSerializersV3d0.java:135)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$ListJacksonSerializer.serializeWithType(JavaUtilSerializersV3d0.java:118)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:2656)
	at org.apache.tinkerpop.shaded.jackson.core.base.GeneratorBase.writeObject(GeneratorBase.java:381)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$MapJacksonSerializer.serialize(JavaUtilSerializersV3d0.java:59)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$MapJacksonSerializer.serializeWithType(JavaUtilSerializersV3d0.java:67)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$MapJacksonSerializer.serializeWithType(JavaUtilSerializersV3d0.java:49)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:2656)
	at org.apache.tinkerpop.shaded.jackson.core.base.GeneratorBase.writeObject(GeneratorBase.java:381)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$ListJacksonSerializer.serialize(JavaUtilSerializersV3d0.java:127)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$ListJacksonSerializer.serializeWithType(JavaUtilSerializersV3d0.java:135)
	at org.apache.tinkerpop.gremlin.structure.io.graphson.JavaUtilSerializersV3d0$ListJacksonSerializer.serializeWithType(JavaUtilSerializersV3d0.java:118)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	at org.apache.tinkerpop.shaded.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3906)
	at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3220)
	at org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper$writeValueAsString.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:127)
	at Script18.run(Script18.groovy:7)
	at org.apache.tinkerpop.gremlin.groovy.jsr223.GremlinGroovyScriptEngine.eval(GremlinGroovyScriptEngine.java:674)
	at org.apache.tinkerpop.gremlin.groovy.jsr223.GremlinGroovyScriptEngine.eval(GremlinGroovyScriptEngine.java:376)
	at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:233)
	at org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor.lambda$eval$0(GremlinExecutor.java:267)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

[vtslab]

Did some reading in the TinkerPop re docs. Can you try and add the graphson extensions like:
https://tinkerpop.apache.org/docs/3.4.11/dev/io/#_extended_2

Best wishes, Marc

[ghost]

Thank you very much, it helped