Struct TupleEncodingV1 

pub struct TupleEncodingV1<T>(pub T);

👎Deprecated: This type preserves a version of tuple encoding for backwards compatibility. It it is known to have improper key ordering. See https://github.com/khonsulabs/bonsaidb/issues/240.

This type enables wrapping a tuple to preserve the behavior of the initial implementation of tuple key encoding. This type should not be used in new code and should only be used to preserve backwards compatibility. See https://github.com/khonsulabs/bonsaidb/issues/240 for more information about why this implementation should be avoided.

Tuple Fields

0: T

👎Deprecated: This type preserves a version of tuple encoding for backwards compatibility. It it is known to have improper key ordering. See https://github.com/khonsulabs/bonsaidb/issues/240.

Trait Implementations

impl<T: Clone> Clone for TupleEncodingV1<T>

fn clone(&self) -> TupleEncodingV1<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for TupleEncodingV1<T>

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

Formats the value using the given formatter.

impl<'k, T1> Key<'k> for TupleEncodingV1<(T1,)>

where T1: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2> Key<'k> for TupleEncodingV1<(T1, T2)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2, T3> Key<'k> for TupleEncodingV1<(T1, T2, T3)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>, T3: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2, T3, T4> Key<'k> for TupleEncodingV1<(T1, T2, T3, T4)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>, T3: for<'ke> Key<'ke>, T4: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2, T3, T4, T5> Key<'k> for TupleEncodingV1<(T1, T2, T3, T4, T5)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>, T3: for<'ke> Key<'ke>, T4: for<'ke> Key<'ke>, T5: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2, T3, T4, T5, T6> Key<'k> for TupleEncodingV1<(T1, T2, T3, T4, T5, T6)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>, T3: for<'ke> Key<'ke>, T4: for<'ke> Key<'ke>, T5: for<'ke> Key<'ke>, T6: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2, T3, T4, T5, T6, T7> Key<'k> for TupleEncodingV1<(T1, T2, T3, T4, T5, T6, T7)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>, T3: for<'ke> Key<'ke>, T4: for<'ke> Key<'ke>, T5: for<'ke> Key<'ke>, T6: for<'ke> Key<'ke>, T7: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<'k, T1, T2, T3, T4, T5, T6, T7, T8> Key<'k> for TupleEncodingV1<(T1, T2, T3, T4, T5, T6, T7, T8)>

where T1: for<'ke> Key<'ke>, T2: for<'ke> Key<'ke>, T3: for<'ke> Key<'ke>, T4: for<'ke> Key<'ke>, T5: for<'ke> Key<'ke>, T6: for<'ke> Key<'ke>, T7: for<'ke> Key<'ke>, T8: for<'ke> Key<'ke>,

const CAN_OWN_BYTES: bool = false

If true, this type can benefit from an owned Vec<u8>. This flag is used as a hint of whether to attempt to do memcpy operations in some decoding operations to avoid extra allocations.

fn from_ord_bytes<'e>(bytes: ByteSource<'k, 'e>) -> Result<Self, Self::Error>

Deserialize a sequence of bytes previously encoded with KeyEncoding::as_ord_bytes.

fn first_value() -> Result<Self, NextValueError>

Return the first value in sequence for this type. Not all types implement this.

fn next_value(&self) -> Result<Self, NextValueError>

Return the next value in sequence for this type. Not all types implement this. Instead of wrapping/overflowing, None should be returned.

impl<T1> KeyEncoding for TupleEncodingV1<(T1,)>

where T1: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2> KeyEncoding for TupleEncodingV1<(T1, T2)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2, T3> KeyEncoding for TupleEncodingV1<(T1, T2, T3)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>, T3: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2, T3, T4> KeyEncoding for TupleEncodingV1<(T1, T2, T3, T4)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>, T3: for<'k> Key<'k>, T4: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2, T3, T4, T5> KeyEncoding for TupleEncodingV1<(T1, T2, T3, T4, T5)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>, T3: for<'k> Key<'k>, T4: for<'k> Key<'k>, T5: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2, T3, T4, T5, T6> KeyEncoding for TupleEncodingV1<(T1, T2, T3, T4, T5, T6)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>, T3: for<'k> Key<'k>, T4: for<'k> Key<'k>, T5: for<'k> Key<'k>, T6: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2, T3, T4, T5, T6, T7> KeyEncoding for TupleEncodingV1<(T1, T2, T3, T4, T5, T6, T7)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>, T3: for<'k> Key<'k>, T4: for<'k> Key<'k>, T5: for<'k> Key<'k>, T6: for<'k> Key<'k>, T7: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.

impl<T1, T2, T3, T4, T5, T6, T7, T8> KeyEncoding for TupleEncodingV1<(T1, T2, T3, T4, T5, T6, T7, T8)>

where T1: for<'k> Key<'k>, T2: for<'k> Key<'k>, T3: for<'k> Key<'k>, T4: for<'k> Key<'k>, T5: for<'k> Key<'k>, T6: for<'k> Key<'k>, T7: for<'k> Key<'k>, T8: for<'k> Key<'k>,

const LENGTH: Option<usize>

The size of the key, if constant. If this type doesn’t produce the same number of bytes for each value, this should be None.

type Error = CompositeKeyError

The error type that can be produced by either serialization or deserialization.

fn describe<Visitor>(visitor: &mut Visitor)

where Visitor: KeyVisitor,

Describes this type by invoking functions on visitor describing the key being encoded.

fn as_ord_bytes(&self) -> Result<Cow<'_, [u8]>, Self::Error>

Convert self into a Cow<'_, [u8]> containing bytes that are able to be compared via memcmp in a way that is comptaible with its own Ord implementation.