KeyComparator

risingwave_hummock_sdk

Struct KeyComparator 

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pub struct KeyComparator;
Expand description

A comparator for comparing crate::key::FullKey and crate::key::UserKey with possibly different table key types.

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impl KeyComparator

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pub fn compare_encoded_full_key(lhs: &[u8], rhs: &[u8]) -> Ordering

Suppose parameter as full_key = (user_key, epoch), this function compares &[u8] as if comparing the above tuple.

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pub fn encoded_full_key_less_than(lhs: &[u8], rhs: &[u8]) -> bool

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pub fn compare_user_key_cross_format( encoded: impl AsRef<[u8]>, unencoded: &UserKey<impl AsRef<[u8]>>, ) -> Ordering

Used to compare UserKey and its encoded format.

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pub fn encoded_less_than_unencoded( encoded: impl AsRef<[u8]>, unencoded: &UserKey<impl AsRef<[u8]>>, ) -> bool

Used to compare UserKey and its encoded format.

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pub fn encoded_less_equal_unencoded( encoded: impl AsRef<[u8]>, unencoded: &UserKey<impl AsRef<[u8]>>, ) -> bool

Used to compare UserKey and its encoded format.

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pub fn encoded_greater_than_unencoded( encoded: impl AsRef<[u8]>, unencoded: &UserKey<impl AsRef<[u8]>>, ) -> bool

Used to compare UserKey and its encoded format.

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