pub struct TableWriter<R: TableRow + Send + Sync + 'static> {
    _phantom: PhantomData<R>,
    writer: Option<UnchunkWriter<R, ThreadObjectWriter<'static, Vec<R>>>>,
    out_path: Option<PathBuf>,
    row_count: usize,
}
Expand description

Parquet table writer.

A table writer is an ObjectWriter for structs implementing TableRow, that writes them out to a Parquet file.

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§_phantom: PhantomData<R>§writer: Option<UnchunkWriter<R, ThreadObjectWriter<'static, Vec<R>>>>§out_path: Option<PathBuf>§row_count: usize

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impl<R> TableWriter<R>
where R: TableRow + Send + Sync + 'static,

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pub fn open<P: AsRef<Path>>(path: P) -> Result<Self>

Open a table writer for a path.

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impl<R> TableWriter<R>
where R: TableRow + Send + Sync + 'static,

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fn display_path(&self) -> Cow<'static, str>

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impl<R> DataSink for TableWriter<R>
where R: TableRow + Send + Sync + 'static,

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fn output_files(&self) -> Vec<PathBuf>

Get the output files for the sink.
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fn input_files(&self) -> Vec<PathBuf>

Get auxillary input files for the sink. Read more
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impl<R> Drop for TableWriter<R>
where R: TableRow + Send + Sync + 'static,

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<R> ObjectWriter<R> for TableWriter<R>
where R: TableRow + Send + Sync + 'static,

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fn write_object(&mut self, row: R) -> Result<()>

Write one object.
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fn finish(self) -> Result<usize>

Finish and close the target.
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fn write_all_objects<I>(&mut self, objects: I) -> Result<usize>
where I: Iterator<Item = T>,

Write an iterator full of objects.
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fn write_and_finish<I>(self, objects: I) -> Result<usize>
where I: Iterator<Item = T>,

Write an iterator of objects and finish the writer.
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fn with_transform<F, T2>(self, transform: F) -> MapWriter<F, T2, T, Self>
where F: Fn(T2) -> Result<T>,

Wrap this object writer in a transformed writer.

Auto Trait Implementations§

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impl<R> !RefUnwindSafe for TableWriter<R>

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impl<R> Send for TableWriter<R>

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impl<R> Sync for TableWriter<R>

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impl<R> Unpin for TableWriter<R>
where R: Unpin,

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impl<R> !UnwindSafe for TableWriter<R>

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> 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> IntoResult<T> for T

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type Err = Infallible

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fn into_result(self) -> Result<T, <T as IntoResult<T>>::Err>

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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

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V