Enum StructArrayMigration

pub(crate) enum StructArrayMigration {
    AddFieldNullableAtEnd {
        name: String,
        typ: DataType,
    },
    DropField {
        name: String,
    },
    MakeNull {
        name: String,
    },
    AlterFieldNullable {
        name: String,
    },
    Recurse {
        name: String,
        migration: ArrayMigration,
    },
}

Variants

AddFieldNullableAtEnd

Fields

name: String

typ: DataType

DropField

Drop the field of the provided name.

Fields

name: String

MakeNull

Replace the field with a NullArray.

Special case for projecting away all of the columns in a StructArray.

Fields

name: String

AlterFieldNullable

Make the field of the provided name nullable.

Fields

name: String

Recurse

Fields

name: String

migration: ArrayMigration

Implementations

impl StructArrayMigration

fn contains_drop(&self) -> bool

fn migrate( &self, len: usize, fields: &mut Fields, arrays: &mut Vec<Arc<dyn Array>>, )

Trait Implementations

impl Debug for StructArrayMigration

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

Formats the value using the given formatter.

impl PartialEq for StructArrayMigration

fn eq(&self, other: &StructArrayMigration) -> 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 StructuralPartialEq for StructArrayMigration