Struct ParquetEncryption 

pub struct ParquetEncryption(/* private fields */);

Available on crate feature parquet only.

Determines how to encrypt Parquet files when writing.

This may hold secret keys, so can’t be serialized, and is compared and hashed by pointer.

Implementations

impl ParquetEncryption

pub fn new(factory: impl EncryptionPropertiesFactory + 'static) -> Self

Create properties for each file using a factory.

pub fn file_properties(&self) -> PolarsResult<Arc<FileEncryptionProperties>>

Get the properties to use for encrypting a single file.

pub fn encrypted_column_names(&self) -> Vec<String>

The dot-separated paths of the columns that are encrypted with their own key, or none for uniform encryption.

pub fn validate_encrypted_column_names( &self, schema: &SchemaDescriptor, ) -> PolarsResult<()>

Checks that each column that is to be encrypted with its own key is present in the schema exactly once.

Trait Implementations

impl Clone for ParquetEncryption

fn clone(&self) -> ParquetEncryption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParquetEncryption

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ParquetEncryption

Available on crate feature serde only.

fn deserialize<D>(_deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ParquetEncryption

impl From<Arc<FileEncryptionProperties>> for ParquetEncryption

fn from(properties: Arc<FileEncryptionProperties>) -> Self

Converts to this type from the input type.

impl Hash for ParquetEncryption

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl JsonSchema for ParquetEncryption

Available on crate feature dsl-schema only.

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for ParquetEncryption

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ParquetEncryption

Available on crate feature serde only.

fn serialize<S>(&self, _serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.