Enum DefaultCursorType 

#[repr(i32)]
pub enum DefaultCursorType {
    Default = 0,
    Odbc = 1,
    ServerSide = 2,
}

Controls what type of cursor driver is used on the connection (ODBCDirect only) created by the Data control.

Reference

Variants

Default = 0

Let the ODBC driver determine which type of cursor to use.

This is the default value.

Odbc = 1

Use the ODBC cursor library. This option gives better performance for small result sets, but degrades quickly for larger result sets.

ServerSide = 2

Use server side cursors. For most large operations this gives better performance, but might cause more network traffic.

Trait Implementations

impl Clone for DefaultCursorType

fn clone(&self) -> DefaultCursorType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DefaultCursorType

impl Debug for DefaultCursorType

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

Formats the value using the given formatter.

impl Default for DefaultCursorType

fn default() -> DefaultCursorType

Returns the “default value” for a type.

impl Display for DefaultCursorType

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

Formats the value using the given formatter.

impl Eq for DefaultCursorType

impl FromStr for DefaultCursorType

type Err = ErrorKind

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for DefaultCursorType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DefaultCursorType

fn cmp(&self, other: &DefaultCursorType) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for DefaultCursorType

fn eq(&self, other: &DefaultCursorType) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for DefaultCursorType

fn partial_cmp(&self, other: &DefaultCursorType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for DefaultCursorType

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DefaultCursorType

impl TryFrom<&str> for DefaultCursorType

type Error = ErrorKind

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i32> for DefaultCursorType

type Error = TryFromPrimitiveError<DefaultCursorType>

The type returned in the event of a conversion error.

fn try_from(number: i32) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for DefaultCursorType

const NAME: &'static str = "DefaultCursorType"

type Primitive = i32

type Error = TryFromPrimitiveError<DefaultCursorType>

fn try_from_primitive( number: Self::Primitive, ) -> Result<Self, TryFromPrimitiveError<Self>>