Add explicit transaction support to non-Java GLVs#3434
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Split executeAndStream() into sendRequest() (synchronous HTTP call) and streamResponse() (async body streaming). submit() now blocks until the server acknowledges the request (response headers received), then streams the body in the background. Non-GraphBinary HTTP errors (400/500 with text/JSON bodies) are now returned directly from submit() instead of being embedded in the ResultSet. Tests updated accordingly. Assisted-by: Kiro:claude-opus-4-6
Implement Transaction classes in gremlin-python, gremlin-go, gremlin-javascript, and gremlin-dotnet that mirror the Java HttpRemoteTransaction. Transaction wraps a Client and provides begin/commit/rollback/close lifecycle plus a submit() method for plain gremlin-lang strings. Key design decisions: - Default close behavior changed from commit to rollback (all GLVs) - Transactions are single-use (terminal state after commit/rollback) - gtx.tx() returns the same Transaction (enables gtx.tx().commit()) Assisted-by: Kiro:claude-opus-4-6
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Implement Transaction classes in gremlin-python, gremlin-go, gremlin-javascript, and gremlin-dotnet that mirror the Java HttpRemoteTransaction. Transaction wraps a Client and provides begin/commit/rollback/close lifecycle plus a submit() method for plain gremlin-lang strings.
gremlin-driver's default transaction close behavior is now rollback to match all GLVs.
Also changes how requests are submitted in gremlin-go. In particular it now waits for response headers before returning. This allows users to check if the response returns an err (pretty much any non-200 OK response), before having to check the ResultSet itself.