Struct Capabilities 

pub struct Capabilities {

    pub protocol_version: u16,
    pub protocol_options: u16,
    pub charset_id: u16,
    pub ncharset_id: u16,
    pub compile_caps: Vec<u8>,
    pub runtime_caps: Vec<u8>,
    pub ttc_field_version: u8,
    pub sdu: u32,
    pub max_string_size: u32,
    pub supports_fast_auth: bool,
    pub supports_oob: bool,
    pub supports_end_of_response: bool,
    pub supports_pipelining: bool,
    pub supports_request_boundaries: bool,
    pub combo_key: Option<Vec<u8>>,
}

Capabilities negotiated between client and server

Fields

protocol_version: u16

Negotiated protocol version

protocol_options: u16

Protocol options from server

charset_id: u16

Character set ID for database communication

ncharset_id: u16

National character set ID

compile_caps: Vec<u8>

Compile-time capabilities array (CCAP)

runtime_caps: Vec<u8>

Runtime capabilities array (RCAP)

ttc_field_version: u8

TTC field version

sdu: u32

Negotiated SDU size

max_string_size: u32

Maximum string size (4000 or 32767)

supports_fast_auth: bool

Whether fast authentication is supported

supports_oob: bool

Whether OOB (out of band) is supported

supports_end_of_response: bool

Whether end-of-response markers are supported

supports_pipelining: bool

Whether pipelining is supported

supports_request_boundaries: bool

Whether request boundaries are supported

combo_key: Option<Vec<u8>>

Combo key derived during authentication (for encryption)

Implementations

impl Capabilities

pub fn new() -> Self

Create new capabilities with default client values

pub fn adjust_for_protocol( &mut self, protocol_version: u16, protocol_options: u16, flags2: u32, )

Adjust capabilities based on ACCEPT packet response

pub fn adjust_for_server_compile_caps(&mut self, server_caps: &[u8])

Adjust capabilities based on server’s compile-time capabilities

pub fn adjust_for_server_runtime_caps(&mut self, server_caps: &[u8])

Adjust capabilities based on server’s runtime capabilities

pub fn check_ncharset_id(&self) -> Result<()>

Check if the national character set is supported

pub fn supports_bool(&self) -> bool

Check if we support boolean type (Oracle 23.1+)

pub fn supports_large_oson_fname(&self) -> bool

Check if we support large OSON field names (Oracle 23.1+)

Trait Implementations

impl Clone for Capabilities

fn clone(&self) -> Capabilities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Capabilities

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Capabilities

fn default() -> Self

Returns the “default value” for a type.