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PositionPostingList

Struct PositionPostingList 

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pub struct PositionPostingList { /* private fields */ }
Expand description

Block-based position posting list with skip list for O(log n) doc_id lookup

Similar to BlockPostingList but stores positions per document. Uses binary search on skip list to find the right block, then linear scan within block.

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impl PositionPostingList

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pub fn new() -> Self

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pub fn with_capacity(capacity: usize) -> Self

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pub fn from_postings(postings: &[PostingWithPositions]) -> Result<Self>

Build from a list of postings with positions

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pub fn push(&mut self, doc_id: DocId, positions: Vec<u32>)

Add a posting with positions (for building - converts to block format on serialize)

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pub fn doc_count(&self) -> u32

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pub fn len(&self) -> usize

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pub fn is_empty(&self) -> bool

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pub fn get_positions(&self, target_doc_id: DocId) -> Option<Vec<u32>>

Get positions for a specific document using binary search on skip list

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pub fn serialize<W: Write>(&self, writer: &mut W) -> Result<()>

Serialize to bytes with block format

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pub fn deserialize<R: Read>(reader: &mut R) -> Result<Self>

Deserialize from bytes

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pub fn concatenate_blocks( sources: &[(PositionPostingList, u32)], ) -> Result<Self>

Concatenate blocks from multiple position lists with doc_id remapping (for merge)

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pub fn iter(&self) -> PositionPostingIterator<'_>

Get iterator over all postings (for phrase queries)

Trait Implementations§

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impl Clone for PositionPostingList

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fn clone(&self) -> PositionPostingList

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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

Formats the value using the given formatter. Read more
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impl Default for PositionPostingList

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait 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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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

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fn to_subset(&self) -> Option<SS>

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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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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)

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impl<T, U> TryFrom<U> for 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>

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

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