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https://issues.apache.org/jira/browse/TINKERPOP-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18031246#comment-18031246
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ASF GitHub Bot commented on TINKERPOP-3186:
-------------------------------------------
andreachild commented on code in PR #3242:
URL: https://github.com/apache/tinkerpop/pull/3242#discussion_r2445967707
##########
docs/src/upgrade/release-3.8.x.asciidoc:
##########
@@ -301,16 +301,87 @@ g.inject("Hello").split("")
See: link:https://issues.apache.org/jira/browse/TINKERPOP-3083[TINKERPOP-3083]
==== asString() No Longer Allow Nulls
-The `asString()` step will no longer allow `null` input. An
`IllegalArgumentException` will be thrown for consistency with all other
parsing steps (i.e. `asDate()`, `asBool()`, `asNumber()`).
+
+The `asString()` step will no longer allow `null` input. An
`IllegalArgumentException` will be thrown for consistency
+with all other parsing steps (i.e. `asDate()`, `asBool()`, `asNumber()`).
See:
link:https://lists.apache.org/thread/q76pgrvhprosb4lty63bnsnbw2ljyl7m[DISCUSS]
thread
-==== Javascript Set Deserialization
+==== Serialization Changes
+
+*Properties on Element Serialization in Python & Javascript*
+
+Element properties handling has been inconsistent across GLVs.
Previously,`gremlin-python` deserialized empty properties
Review Comment:
Can you mention what the other GLVs do so that it's clear that this change
is making javascript and python consistent with the other GLVs.
I asked Q to scan the other GLVs and it found that .NET and Go can currently
return null properties and should be made consistent as well.
.NET:
```
protected Element(object? id, string label, dynamic[]? properties = null)
{
Id = id;
Label = label;
Properties = properties;
}
```
Go:
```
type Element struct {
Id interface{}
Label string
Properties interface{}
}
```
> Inconsistency of properties data type on Element
> ------------------------------------------------
>
> Key: TINKERPOP-3186
> URL: https://issues.apache.org/jira/browse/TINKERPOP-3186
> Project: TinkerPop
> Issue Type: Improvement
> Components: javascript
> Affects Versions: 3.7.4
> Reporter: Stephen Mallette
> Assignee: Stephen Mallette
> Priority: Blocker
> Labels: breaking
>
> The {{properties}} property on {{Element}} in javascript has datatypes
> inconsistent with Java and other GLVs where it can be a {{Map}}, {{List}} or
> {{undefined}} depending on serializer or other factors (and we go through
> great lengths to assert all of this in tests for some reason). The type
> should be {{List}}. Use an empty list if {{null}} or {{undefined}}.
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