polars_arrow::io::ipc::read

Enum OutOfSpecKind

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#[non_exhaustive]
pub enum OutOfSpecKind {
Show 34 variants InvalidHeader, InvalidFooter, NegativeFooterLength, InvalidFlatbufferFooter(Error), MissingRecordBatches, InvalidFlatbufferRecordBatches(Error), MissingSchema, InvalidFlatbufferSchema(Error), MissingFields, InvalidFlatbufferDictionaries(Error), InvalidFlatbufferBlock(Error), InvalidFlatbufferMessage(Error), MissingMessageHeader, InvalidFlatbufferHeader(Error), UnexpectedNegativeInteger, UnexpectedMessageType, MissingMessageBuffers, InvalidFlatbufferBuffers(Error), MissingMessageNodes, InvalidFlatbufferNodes(Error), InvalidFlatbufferBodyLength(Error), MissingData, InvalidFlatbufferData(Error), InvalidFlatbufferVersion(Error), InvalidFlatbufferCompression(Error), ExpectedBuffer, InvalidBuffer { length: usize, type_name: &'static str, required_number_of_bytes: usize, buffer_length: usize, }, InvalidBuffersLength { buffers_size: u64, file_size: u64, }, InvalidBitmap { length: usize, number_of_bits: usize, }, InvalidFlatbufferIsDelta(Error), InvalidFlatbufferId(Error), InvalidId { requested_id: i64, }, InvalidIdDataType { requested_id: i64, }, InvalidDataType,
}
Available on crate feature io_ipc only.
Expand description

The different types of errors that reading from IPC can cause

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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InvalidHeader

The IPC file does not start with [b’A’, b’R’, b’R’, b’O’, b’W’, b’1’]

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InvalidFooter

The IPC file does not end with [b’A’, b’R’, b’R’, b’O’, b’W’, b’1’]

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NegativeFooterLength

The first 4 bytes of the last 10 bytes is < 0

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InvalidFlatbufferFooter(Error)

The footer is an invalid flatbuffer

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MissingRecordBatches

The file’s footer does not contain record batches

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InvalidFlatbufferRecordBatches(Error)

The footer’s record batches is an invalid flatbuffer

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MissingSchema

The file’s footer does not contain a schema

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InvalidFlatbufferSchema(Error)

The footer’s schema is an invalid flatbuffer

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MissingFields

The file’s schema does not contain fields

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InvalidFlatbufferDictionaries(Error)

The footer’s dictionaries is an invalid flatbuffer

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InvalidFlatbufferBlock(Error)

The block is an invalid flatbuffer

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InvalidFlatbufferMessage(Error)

The dictionary message is an invalid flatbuffer

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MissingMessageHeader

The message does not contain a header

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InvalidFlatbufferHeader(Error)

The message’s header is an invalid flatbuffer

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UnexpectedNegativeInteger

Relative positions in the file is < 0

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UnexpectedMessageType

dictionaries can only contain dictionary messages; record batches can only contain records

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MissingMessageBuffers

RecordBatch messages do not contain buffers

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InvalidFlatbufferBuffers(Error)

The message’s buffers is an invalid flatbuffer

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MissingMessageNodes

RecordBatch messages does not contain nodes

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InvalidFlatbufferNodes(Error)

The message’s nodes is an invalid flatbuffer

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InvalidFlatbufferBodyLength(Error)

The message’s body length is an invalid flatbuffer

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MissingData

The message does not contain data

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InvalidFlatbufferData(Error)

The message’s data is an invalid flatbuffer

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InvalidFlatbufferVersion(Error)

The version is an invalid flatbuffer

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InvalidFlatbufferCompression(Error)

The compression is an invalid flatbuffer

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ExpectedBuffer

The record contains a number of buffers that does not match the required number by the data type

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InvalidBuffer

A buffer’s size is smaller than the required for the number of elements

Fields

§length: usize

Declared number of elements in the buffer

§type_name: &'static str

The name of the NativeType

§required_number_of_bytes: usize

Bytes required for the length and type

§buffer_length: usize

The size of the IPC buffer

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InvalidBuffersLength

A buffer’s size is larger than the file size

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§buffers_size: u64

number of bytes of all buffers in the record

§file_size: u64

the size of the file

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InvalidBitmap

A bitmap’s size is smaller than the required for the number of elements

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§length: usize

Declared length of the bitmap

§number_of_bits: usize

Number of bits on the IPC buffer

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InvalidFlatbufferIsDelta(Error)

The dictionary is_delta is an invalid flatbuffer

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InvalidFlatbufferId(Error)

The dictionary id is an invalid flatbuffer

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InvalidId

Invalid dictionary id

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§requested_id: i64

The requested dictionary id

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InvalidIdDataType

Field id is not a dictionary

Fields

§requested_id: i64

The requested dictionary id

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InvalidDataType

FixedSizeBinaryArray has invalid datatype.

Trait Implementations§

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impl Debug for OutOfSpecKind

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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 OutOfSpecKind

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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const ALIGN: usize = _

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type Init = T

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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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