parquet::schema::types

Struct ColumnPath

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pub struct ColumnPath {
    parts: Vec<String>,
}
Expand description

Represents the location of a column in a Parquet schema

§Example: refer to column named 'my_column'

let column_path = ColumnPath::from("my_column");

§Example: refer to column named c in a nested struct {a: {b: {c: ...}}}

// form path 'a.b.c'
let column_path = ColumnPath::from(vec![
  String::from("a"),
  String::from("b"),
  String::from("c")
]);

Fields§

§parts: Vec<String>

Implementations§

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impl ColumnPath

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pub fn new(parts: Vec<String>) -> Self

Creates new column path from vector of field names.

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pub fn string(&self) -> String

Returns string representation of this column path.

use parquet::schema::types::ColumnPath;

let path = ColumnPath::new(vec!["a".to_string(), "b".to_string(), "c".to_string()]);
assert_eq!(&path.string(), "a.b.c");
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pub fn append(&mut self, tail: Vec<String>)

Appends more components to end of column path.

use parquet::schema::types::ColumnPath;

let mut path = ColumnPath::new(vec!["a".to_string(), "b".to_string(), "c"
.to_string()]);
assert_eq!(&path.string(), "a.b.c");

path.append(vec!["d".to_string(), "e".to_string()]);
assert_eq!(&path.string(), "a.b.c.d.e");
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pub fn parts(&self) -> &[String]

Returns a slice of path components.

Trait Implementations§

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impl AsRef<[String]> for ColumnPath

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fn as_ref(&self) -> &[String]

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for ColumnPath

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fn clone(&self) -> ColumnPath

Returns a copy of the value. Read more
1.0.0 · Source§

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

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

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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 Display for ColumnPath

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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 From<&str> for ColumnPath

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fn from(single_path: &str) -> Self

Converts to this type from the input type.
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impl From<String> for ColumnPath

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fn from(single_path: String) -> Self

Converts to this type from the input type.
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impl From<Vec<String>> for ColumnPath

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fn from(parts: Vec<String>) -> Self

Converts to this type from the input type.
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impl Hash for ColumnPath

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl HeapSize for ColumnPath

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fn heap_size(&self) -> usize

Return the size of any bytes allocated on the heap by this object, including heap memory in those structures Read more
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impl PartialEq for ColumnPath

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fn eq(&self, other: &ColumnPath) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for ColumnPath

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impl StructuralPartialEq for ColumnPath

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, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. 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> 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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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> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. 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.
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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T