Struct MigrationPolicy 

pub struct MigrationPolicy {
    pub allow_destructive: bool,
}

Caller-supplied policy that gates destructive migration ops.

Fields

allow_destructive: bool

When false, the planner refuses to emit DropTable or DropColumn ops and aborts with MigrationError::DestructiveOpDenied.

Trait Implementations

impl Clone for MigrationPolicy

fn clone(&self) -> MigrationPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationPolicy

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

Formats the value using the given formatter.

impl Default for MigrationPolicy

fn default() -> MigrationPolicy

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MigrationPolicy

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MigrationPolicy

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

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 MigrationPolicy

impl Eq for MigrationPolicy

impl StructuralPartialEq for MigrationPolicy