Enum ColumnRule 

pub enum ColumnRule {
    Any,
    DenyAll,
    Only(BTreeSet<String>),
    Except(BTreeSet<String>),
}

Column access rule for reads, writes, or RETURNING clauses.

Variants

Any

Any column is allowed.

DenyAll

No columns are allowed.

Only(BTreeSet<String>)

Only the listed columns are allowed.

Except(BTreeSet<String>)

Any column except the listed columns is allowed.

Implementations

impl ColumnRule

pub fn only<I, S>(columns: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Create an allow-list rule.

pub fn except<I, S>(columns: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Create a deny-list rule.

pub fn is_restrictive(&self) -> bool

Returns true if this rule constrains column access.

pub fn allows(&self, column: &str) -> bool

Returns true if column is allowed by this rule.

Trait Implementations

impl Clone for ColumnRule

fn clone(&self) -> ColumnRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnRule

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

Formats the value using the given formatter.

impl Default for ColumnRule

fn default() -> ColumnRule

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ColumnRule

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ColumnRule

impl PartialEq for ColumnRule

fn eq(&self, other: &ColumnRule) -> 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 ColumnRule

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 ColumnRule