Struct ValueRef 

pub struct ValueRef<'a> { /* private fields */ }

Available on crate features functions or value only.

A thin wrapper around a sqlite3_value reference.

ValueRef is used only to represent protected sqlite3_value objects, such as those passed to user-defined functions or those returned by sqlite3_value_dup. OpaqueValueRef is instead used to represent the unprotected values returned from sqlite3_column_* functions.

Implementations

impl<'a> ValueRef<'a>

pub const fn new(handle: *mut sqlite3_value) -> Option<Self>

Available on crate feature value only.

Wrap a sqlite3_value dynamic value object.

pub unsafe fn fetch<'r, T: Fetch<'r>>(&'r self) -> T

Available on crate feature value only.

Unpack a typed value from this Value.

Safety

Callers are responsible for managing the ffi::Value lifecycle.

pub const fn as_ptr(&self) -> *mut sqlite3_value

Available on crate feature value only.

Access the raw sqlite3_value pointer.

Trait Implementations

impl<'a> AsRef<ValueRef<'a>> for Value

Available on crate feature value only.

fn as_ref(&self) -> &ValueRef<'a>

Converts this type into a shared reference of the (usually inferred) input type.

impl<'a> Borrow<ValueRef<'a>> for Value

Available on crate feature value only.

fn borrow(&self) -> &ValueRef<'a>

Immutably borrows from an owned value.

impl Debug for ValueRef<'_>

Available on crate feature value only.

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

Formats the value using the given formatter.

impl<'a> ToOwned for ValueRef<'a>

Available on crate feature value only.

type Owned = Value

The resulting type after obtaining ownership.

fn to_owned(&self) -> Self::Owned

Creates owned data from borrowed data, usually by cloning.

fn clone_into(&self, target: &mut Self::Owned)

Uses borrowed data to replace owned data, usually by cloning.

impl<'c> Send for ValueRef<'c>

Available on crate features multi-thread or serialized only.

impl<'c> Sync for ValueRef<'c>

Available on crate feature serialized only.