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The following commit(s) were added to refs/heads/master by this push:
new 180ad9ff2a Update stale select() error in the-traversal 'A Note on
Maps'
180ad9ff2a is described below
commit 180ad9ff2a530697ffef8717c1580c3dee281fab
Author: Stephen Mallette <[email protected]>
AuthorDate: Fri Sep 11 23:30:42 2026 +0000
Update stale select() error in the-traversal 'A Note on Maps'
The static console example showing select() with a non-string key documented
an outdated Groovy method-resolution error. As of the current 4.0 runtime
the
same traversal fails with a ClassCastException instead, so update the
example
output and reframe the accompanying note. The constant() workaround is
unchanged.
Assisted-by: Kiro:claude-opus-4.8
---
docs/src/reference/the-traversal.asciidoc | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/docs/src/reference/the-traversal.asciidoc
b/docs/src/reference/the-traversal.asciidoc
index 6693f7089a..d3db90f302 100644
--- a/docs/src/reference/the-traversal.asciidoc
+++ b/docs/src/reference/the-traversal.asciidoc
@@ -6640,8 +6640,8 @@ a native `Map.Entry` concept that can be used. The most
universal data structure
received on the client-side. In other words, if a step was to follow
`unfold()` in the prior example, it would be
dealing with `Map.Entry` and not a `Map`, so Gremlin semantics should remain
consistent on the server side.
-The second issues to consider with steps that return a `Map` is that access
keys on a `Map` is not always as consistent
-as expected. The issue is best demonstrated in some examples:
+The second issue to consider with steps that return a `Map` is that accessing
keys on a `Map` is not always as
+consistent as expected. The issue is best demonstrated in some examples:
[source,text]
----
@@ -6654,10 +6654,10 @@ TokenTraversal support of java.util.LinkedHashMap does
not allow selection by id
Type ':help' or ':h' for help.
Display stack trace? [yN]
-// note that select() can't be used if the key is a non-string
+// note that select() can't be used to retrieve a Map value by a non-string
key - passing an
+// integer key is not rejected outright but instead produces a runtime error
gremlin> g.V().hasLabel('person').both().group().by('age').select(32)
-No signature of method:
org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.DefaultGraphTraversal.select()
is applicable for argument types: (Integer) values: [32]
-Possible solutions: reset(), collect(), sleep(long),
collect(groovy.lang.Closure), inject(groovy.lang.Closure),
split(groovy.lang.Closure)
+class java.util.HashMap cannot be cast to class
org.apache.tinkerpop.gremlin.structure.Element (java.util.HashMap is in module
java.base of loader 'bootstrap'; org.apache.tinkerpop.gremlin.structure.Element
is in unnamed module of loader 'app')
Type ':help' or ':h' for help.
Display stack trace? [yN]
----
