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Stream of BLOB data

Caution

This description needs further verification and possibly correction.For example, it seems to mix up Buffer and Byte[].We’re also not able to match some fields to the implementation.For example, the repeated "Record length" seems to be absent, or may actually refer to the p_batch_blob_data buffer length.
Client
Int32 — p_operation

Operation code (op_batch_blob_stream)

Int32 — p_batch_statement

Statement handle

Buffer[] — p_batch_blob_data

BLOB stream

This stream is a sequence of blob records.Each blob records contains:

UInt32

Record length

The following three fields are called BLOB header

Int64

Batch temporary BLOB ID

UInt32

BLOB size

UInt32

BLOB parameters buffer size

Buffer

BLOB parameters buffer

Buffer

BLOB data (length - BLOB size bytes) (what does this mean?)

BLOB headers and records in a stream need not match, i.e. one record may contain many BLOBs and BLOB may stretch from one record to next.

Server

[wireprotocol-responses-generic]

Batch information request

Uses the [wireprotocol-requests-info] message with:

p_operation

op_info_batch — 111
p_info_object

Statement handle
p_info_items

Values of INF_ constants of IBatch (in IdlFbInterfaces.h)

Services

Attach

Attach to a service.Use message [wireprotocol-connect-attach] with op_service_attach — 82.

Note on p_atch_file:

Current Firebird versions only support one service: service_mgr.Since Firebird 3.0, this can also be an empty string (empty buffer) with the same meaning.

Detach

Send [wireprotocol-connect-detach] with op_service_detach — 83, followed by [wireprotocol-connect-disconnect].

Start

Although the message looks similar to [wireprotocol-requests-info], it has different semantics.

Client
Int32 — p_operation

Operation code (op_service_start — 85)

Int32 — p_info_object

Unused, always use 0

Int32 — p_info_incarnation

Incarnation of object (0)

TODO: Usage and meaning?

Buffer — p_info_items

Service parameter buffer

Server

[wireprotocol-responses-generic]

Query service

Although the message looks similar to [wireprotocol-requests-info], it has different semantics.

Client
Int32 — p_operation

Operation code (op_service_info — 84)

Int32 — p_info_object

Unused, always use 0

Int32 — p_info_incarnation

Incarnation of object (0)

TODO: Usage and meaning?

Buffer — p_info_items

Service parameter buffer

Buffer — p_info_recv_items

Requested information items

Int32 — p_info_buffer_length

Requested information items buffer length

Server

[wireprotocol-responses-generic] — on success, p_resp_data contains the requested information.