MetadataLoader

Struct MetadataLoader 

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pub struct MetadataLoader {}
Expand description

MetadataLoader is a loader for reading persisted metadata files.

§Examples

use lindera_dictionary::loader::metadata::MetadataLoader;
use std::path::Path;

// Normal loading
let metadata = MetadataLoader::load(Path::new("/path/to/dictionary"))?;

// Memory-mapped loading (when mmap feature is enabled)
#[cfg(feature = "mmap")]
let metadata = MetadataLoader::load_mmap(Path::new("/path/to/dictionary"))?;

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impl MetadataLoader

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pub fn load(input_dir: &Path) -> LinderaResult<Metadata>

Loads metadata file (metadata.json) from the specified directory.

§Arguments
  • input_dir - Path to the directory containing the metadata file
§Returns

The loaded Metadata object, or an error

§Errors

Returns an error if file reading fails or deserialization fails.

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pub fn load_mmap(input_dir: &Path) -> LinderaResult<Metadata>

Loads metadata file using memory mapping.

This method is only available when the “mmap” feature is enabled. It’s useful for efficiently reading large files.

§Arguments
  • input_dir - Path to the directory containing the metadata file
§Returns

The loaded Metadata object, or an error

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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> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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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> 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> LayoutRaw for T

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Returns the layout of the type.
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impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

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unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool

Returns whether the given value has been niched. Read more
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fn resolve_niched(out: Place<NichedOption<T, N1>>)

Writes data to out indicating that a T is niched.
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impl<T> Pointee for T

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type Metadata = ()

The metadata type for pointers and references to this type.
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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.