Struct RatingRow

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pub struct RatingRow {
    pub user_id: i32,
    pub asin: String,
    pub rating: f32,
    pub timestamp: i64,
}

Expand description

Structure for scanned ratings.

This data structure is serialized to ratings.parquet in the Amazon directories.

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§user_id: i32§asin: String§rating: f32§timestamp: i64

Trait Implementations§

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impl<'de> Deserialize<'de> for RatingRow

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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

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impl RecordWriter<RatingRow> for &[RatingRow]

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fn write_to_row_group<W: Write + Send>( &self, row_group_writer: &mut SerializedRowGroupWriter<'_, W>, ) -> Result<(), ParquetError>

Writes from self into row_group_writer.

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fn schema(&self) -> Result<TypePtr, ParquetError>

Generated schema used by row_group_writer

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impl Serialize for RatingRow

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more

Auto Trait Implementations§

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impl UnwindSafe for RatingRow

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 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> IntoEither for T

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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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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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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