Class: Neo4j::Driver::Bolt::Protocol::V6

Inherits:
V58 show all
Defined in:
lib/neo4j/driver/bolt/protocol/v6.rb

Overview

Bolt 6.0. HELLO / LOGON / TELEMETRY shapes are unchanged vs 5.8; the major bump exists to (a) gate the manifest as the only supported negotiation path and (b) introduce two new server-pushed struct types in result records:

- VECTOR     0x56 — packed numeric array; 2 fields
                  (element-type byte, raw bytes).
- UNSUPPORTED 0x3F — forward-compat marker; 4 fields
                  (name, min_major, min_minor, extra-map whose
                  optional `message` key carries a server note).

UNSUPPORTED hydrates to Types::UnsupportedType (Feature:API:Type. UnsupportedType). VECTOR stays a plain hash — Feature:API:Type.Vector is unimplemented, so the goal there is still just "don't crash at hydration" until there's a public API to wire it to.

Direct Known Subclasses

V61

Constant Summary collapse

VECTOR_SIGNATURE = 
0x56
UNSUPPORTED_SIGNATURE = 
0x3F

Instance Attribute Summary

Attributes inherited from Base

#connection, #version

Instance Method Summary collapse

Methods inherited from V54

#supports_telemetry?

Methods inherited from V53

#hello_extra

Methods inherited from V52

#notification_config_extra, #supports_notification_filtering?

Methods inherited from V51

#build_logon_message, #hello_extra, #supports_re_auth?

Methods inherited from V5

#configure_packer, #patch_bolt_extra

Methods inherited from V44

#build_route, #supports_impersonation?

Methods inherited from V43

#hello_extra, #patch_bolt_extra

Methods inherited from V4

#build_route, #supports_multiple_databases?

Methods inherited from Base

#build_begin, #build_discard, #build_hello_message, #build_logon_message, #build_pull, #build_run, #build_telemetry, #configure_packer, #enforce_impersonation_support!, #hello_extra, #initialize, #notification_config_extra, #pack_uuid, #supports_impersonation?, #supports_multiple_databases?, #supports_notification_filtering?, #supports_re_auth?, #supports_telemetry?, #unpack_uuid

Constructor Details

This class inherits a constructor from Neo4j::Driver::Bolt::Protocol::Base

Instance Method Details

#customize_hydration(unpacker) ⇒ Object 



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# File 'lib/neo4j/driver/bolt/protocol/v6.rb', line 25

def customize_hydration(unpacker)
  super
  unpacker.register_hydration_handler(VECTOR_SIGNATURE) do |fields|
    { element_type: fields[0], bytes: fields[1] }
  end
  unpacker.register_hydration_handler(UNSUPPORTED_SIGNATURE) do |fields|
    # fields[3] is an extra map (symbol keys) whose :message is the
    # optional server note. Guard the type so a malformed/absent
    # 4th field can't crash hydration — the whole point of a
    # forward-compat marker is to survive the unexpected.
    extra = fields[3].is_a?(Hash) ? fields[3] : {}
    Types::UnsupportedType.new(fields[0], fields[1], fields[2], extra[:message])
  end
end