Struct ComposeSourceOptions 

pub struct ComposeSourceOptions {
    pub version: Option<String>,
    pub if_match: Option<String>,
    pub if_not_changed: Option<Metadata>,
}

Options for one complete source object in a composition.

These options select or constrain the source object. They do not apply to the destination object.

Fields

version: Option<String>

Compose this version of the source object.

This selects which stored version the composition reads; it is not a condition on the destination object.

Check crate::Capability::compose_with_source_version before using this option.

if_match: Option<String>

Compose only when the selected source has this exact ETag.

The operation returns crate::ErrorKind::Unsupported when the service does not advertise crate::Capability::compose_with_source_if_match.

if_not_changed: Option<Metadata>

Compose only when the selected source retains this metadata identity.

OpenDAL selects the metadata version when the service supports source versions. Otherwise it requires the ETag when possible. The operation returns crate::ErrorKind::Unsupported when the service does not support the derived source option, and crate::ErrorKind::ConfigInvalid when the metadata contains neither identity.

Trait Implementations

impl Clone for ComposeSourceOptions

fn clone(&self) -> ComposeSourceOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComposeSourceOptions

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

Formats the value using the given formatter.

impl Default for ComposeSourceOptions

fn default() -> ComposeSourceOptions

Returns the “default value” for a type.

impl Eq for ComposeSourceOptions

impl PartialEq for ComposeSourceOptions

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ComposeSourceOptions