Sure, this is the full mutation, but we reproduced this with just the bnode
update.
mutation updateExpressionById(
$uri: ID!,
$primaryId:String!,
$versionTag:String!,
$catalogedOn: String!,
$createdOn: String!,
$name: String!,
$internalName: String!,
$state: ID!,
$contentModel: ID!,
$clientTag: String!,
$tagType: ID!) {
outcome: updateExpression (input:{
uri:$uri
internalName: $internalName
primaryId: $primaryId
versionTag: $versionTag
name:{
string:$name
lang:"en-US"
}
state: {
uri: $state
}
contentModel: {
uri: $contentModel
}
versionCode: {
code:$clientTag
tagType: {uri: $tagType}
}
catalogedOn: $catalogedOn
createdOn: $createdOn
}),
report{
addedCount
diff
conforms
results{
message
severity
constraintComponentName
pathLabel
focusNode{
uri
}
sourceShape {
uri
}
}
}
commit(strict: true)
}
But it's really an UPDATE mutation where you have a URI, a property, and a
BNode object. If you call it twice with 2 different values for the BNode,
the first call creates the graphlet
URI <prop> _BNode(val1)
the second call updates the property
URI <prop> _BNode(val2)
but does not delete _BNode(val1) from the graph in the process
On Tuesday, October 14, 2025 at 7:15:02 PM UTC-5 Holger Knublauch wrote:
> Hi Michael,
>
> can you share the UPDATE that you are running here? It’s difficult to
> analyze with the currently provided details.
>
> Regards,
> Holger
>
>
> On Oct 15, 2025, at 07:10, Michael Panzer <[email protected]> wrote:
>
> When updating a blank node through a GraphQL mutation, the following
> happens:
>
> <image.png>
> It seems that the blank node get deleted, the updated blank node gets
> committed, but then also the old blank node either survives or gets
> rewritten into the triple store as an orphan.
>
> Is that something that might be a bug in the GraphQL engine in TopBraid or
> do we need to add some garbage collection cleanup to manually delete these
> every time a blank node value gets updated?
>
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> <image.png>
>
>
>
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