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https://github.com/fluencelabs/llamadb
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16 lines
508 B
Rust
16 lines
508 B
Rust
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use std::borrow::Cow;
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pub trait ColumnValueOps: Sized {
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fn from_string_literal(s: Cow<str>) -> Result<Self, Cow<str>>;
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fn from_number_literal(s: Cow<str>) -> Result<Self, Cow<str>>;
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/// Used for predicate logic (such as the entire WHERE expression).
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fn tests_true(&self) -> bool;
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fn equals(&self, rhs: &Self) -> Self;
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fn not_equals(&self, rhs: &Self) -> Self;
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fn and(&self, rhs: &Self) -> Self;
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fn or(&self, rhs: &Self) -> Self;
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fn concat(&self, rhs: &Self) -> Self;
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}
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