Struct ParquetDecryption 

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

Available on crate feature parquet only.

Determines how to decrypt Parquet files when reading.

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

Implementations

impl ParquetDecryption

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

Create properties for each file using a factory.

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

Get the properties to use for decrypting a single file.

Trait Implementations

impl Clone for ParquetDecryption

fn clone(&self) -> ParquetDecryption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParquetDecryption

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ParquetDecryption

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 ParquetDecryption

impl From<Arc<FileDecryptionProperties>> for ParquetDecryption

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

Converts to this type from the input type.

impl Hash for ParquetDecryption

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 ParquetDecryption

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 ParquetDecryption

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ParquetDecryption

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.