Enum ExportMode

pub enum ExportMode {
    Copy,
    TryReference,
}

The import mode describes how files will be imported.

This is a hint to the import trait method. For some implementations, this does not make any sense. E.g. an in memory implementation will always have to copy the file into memory. Also, a disk based implementation might choose to copy small files even if the mode is Reference.

Variants

Copy

This mode will copy the file to the target directory.

This is the safe default because the file can not be accidentally modified after it has been exported.

TryReference

This mode will try to move the file to the target directory and then reference it from the database.

This has a large performance and storage benefit, but it is less safe since the file might be modified in the target directory after it has been exported.

Stores are allowed to ignore this mode and always copy the file, e.g. if the file is very small or if the store does not support referencing files.

Trait Implementations

impl Clone for ExportMode

fn clone(&self) -> ExportMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExportMode

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

Formats the value using the given formatter.

impl Default for ExportMode

fn default() -> ExportMode

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ExportMode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ExportMode

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ExportMode

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ExportMode

impl Eq for ExportMode

impl StructuralPartialEq for ExportMode