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RecordPool

Struct RecordPool 

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pub struct RecordPool {
    pub ids: Vec<RecordId>,
    pub columns: Vec<Vec<String>>,
    pub n_fields: usize,
}
Expand description

Column-major record store: columns[field_idx][record_idx].

All field values are stored as UTF-8 strings in schema field order. Missing or non-text values become empty strings (treated as ComparisonLevel::None by every comparator).

The RecordId for record r is ids[r].

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§ids: Vec<RecordId>§columns: Vec<Vec<String>>

columns[field_idx][record_idx] = UTF-8 text value.

§n_fields: usize

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impl RecordPool

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pub fn new(n_fields: usize) -> Self

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pub fn from_records(records: &[Record], schema: &Schema) -> Self

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pub fn from_store( store: &dyn RecordStore, ids: &[RecordId], schema: &Schema, ) -> Self

Build a pool from a RecordStore, loading only the records with IDs listed in ids. Records are inserted in ids order; pool position i corresponds to ids[i].

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pub fn from_pairs(pairs: &[(Record, Record)], schema: &Schema) -> Self

Build a pool from (Record, Record) pairs: record 2*i is side A of pair i, record 2*i+1 is side B. Allows compare_batch(&pairs) to build a pool once and delegate to compare_batch_from_pool.

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pub fn with_capacity(cap: usize, n_fields: usize) -> Self

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pub fn push(&mut self, record: &Record, schema: &Schema)

Append one record. Fields are stored in schema order.

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pub fn get(&self, field_idx: usize, record_idx: usize) -> &str

Direct column access: bytes of field f for record r.

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pub fn len(&self) -> usize

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pub fn is_empty(&self) -> bool

Trait Implementations§

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impl Clone for RecordPool

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fn clone(&self) -> RecordPool

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for RecordPool

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.