neo4j - Neo4jClient Transaction Error -

when try update existing node in neo4jclient without using transaction, has unique constraint on id , name property, receive exception:

cypherexecutionexception: node 6 exists label user , property "name"=[mike]

but when try update node in transaction, receive exception:

received unexpected http status when executing request.

the response status was: 404 not found

the response neo4j (which might include useful detail!) was: {"results":[],"errors":[{"code":"neo.clienterror.transaction.unknownid","message":"unrecognized transaction id. transaction may have timed out , been rolled back."}]}

my code this:

using (var transaction = client.begintransaction()) {     client.cypher         .merge("(user:user { id: {id}})")         .oncreate().set("user = {user}")         .onmatch().set("user = {user}")         .withparams(new { id = user.id, user = user })         .executewithoutresults();      transaction.commit(); } 

my question is: there way actual error when using transaction, 1 when don't use transaction?

thanks

edit 1:

it looks null id in not being handled correctly. after drilling down, managed pull actual error. first exception in is:

errors = {[   {     "code": "neo.clienterror.statement.invalidsemantics",     "message": "cannot merge node using null property value id"   } ]} 

the stack trace exception is:

at neo4jclient.serialization.cypherjsondeserializer1.getrootresultintransaction(jobject root) in [path_hiiden]\neo4jclient\serialization\cypherjsondeserializer.cs:line 316 @ neo4jclient.serialization.cypherjsondeserializer1.checkforerrorsintransactionresponse(string content) in [path_hiiden]\neo4jclient\serialization\cypherjsondeserializer.cs:line 291 @ neo4jclient.graphclient.<>c__displayclass84_01.<preparecypherrequest>b__0(task1 responsetask) in [path_hiiden]\neo4jclient\graphclient.cs:line 933 @ system.threading.tasks.continuationresulttaskfromresulttask`2.innerinvoke() @ system.threading.tasks.task.execute()

and after there exception 404 not found error. stack trace is:

at neo4jclient.execution.httpresponsemessageextensions.ensureexpectedstatuscode(httpresponsemessage response, string commanddescription, httpstatuscode[] expectedstatuscodes) in [path_hiiden]\neo4jclient\execution\httpresponsemessageextensions.cs:line 41 @ neo4jclient.execution.httpresponsemessageextensions.ensureexpectedstatuscode(httpresponsemessage response, httpstatuscode[] expectedstatuscodes) in [path_hiiden]\neo4jclient\execution\httpresponsemessageextensions.cs:line 14 @ neo4jclient.execution.responsebuilder.<>c__displayclass21_0.b__0(task1 requesttask) in [path_hiiden]\neo4jclient\execution\responsebuilder.cs:line 127 @ system.threading.tasks.continuationresulttaskfromresulttask2.innerinvoke() @ system.threading.tasks.task.execute()

can error fixed in next release please?

edit 2

using (var transaction = client.begintransaction()) {     manifest.users = client.cypher         .merge("(n:user { id: '8be0b8fd-c433-44d3-a7e2-3f0d1a03fefa'}) " +             "on create " +             "set n = { " +                 "id: '8be0b8fd-c433-44d3-a7e2-3f0d1a03fefa', " +                 "username: 'test.user', " +                 "name: 'test user', " +                 "active: true " +             "} " +             "on match " +             "set n = { " +                 "id: '8be0b8fd-c433-44d3-a7e2-3f0d1a03fefa', " +                 "username: 'test.user', " +                 "name: 'test user', " +                 "active: true " +              "}")         .return(n => n.as<user>())         .results         .tolist();     transaction.commit(); } 

meaning fluent api causing error.

so problem in neo4j 2.2.6 change introduced whereby clienterror (constraint violation etc) resulted in automatic rollback of transaction on server.

neo4jclient did auto-rollback on error, , continued so. 2.2.6 resulted in 404 error transaction no longer there (previous versions fine).

so, i've made fix , published updated nuget package, version 1.1.0.12 of neo4jclient give correct response.