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ArrowSchema

Struct ArrowSchema 

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

A handle to an Arrow schema.

This is a wrapper around the opaque chdb_arrow_schema pointer type. Arrow schemas define the structure of Arrow data.

§Safety

The underlying pointer must be valid and must remain valid for the lifetime of this handle. The handle does not take ownership of the Arrow schema.

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impl ArrowSchema

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pub unsafe fn from_raw(schema: *mut chdb_arrow_schema_) -> Self

Create an ArrowSchema from a raw chdb_arrow_schema pointer.

§Safety

The pointer must be valid and point to a valid Arrow schema handle. The caller is responsible for ensuring the schema remains valid for the lifetime of this handle.

§Arguments
  • schema - A raw pointer to a chdb_arrow_schema
§Examples
use chdb_rust::arrow_stream::ArrowSchema;

// Assuming you have a valid Arrow schema pointer from Arrow C++
// let schema_ptr: *mut chdb_arrow_schema_ = ...;
// let arrow_schema = unsafe { ArrowSchema::from_raw(schema_ptr) };
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pub fn as_raw(&self) -> *mut chdb_arrow_schema_

Get the raw pointer to the underlying Arrow schema handle.

§Returns

Returns the raw chdb_arrow_schema pointer.

Trait Implementations§

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impl Clone for ArrowSchema

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fn clone(&self) -> ArrowSchema

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 ArrowSchema

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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 Copy for ArrowSchema

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impl Send for ArrowSchema

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, 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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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, 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.