Struct DecoderContext 

pub struct DecoderContext { /* private fields */ }

Context for decoder creation, containing configuration.

This context is passed through the decoder creation process and contains all the configuration needed to create decoders recursively.

Implementations

impl DecoderContext

pub fn coerce_primitive(&self) -> bool

Returns whether to coerce primitive types (e.g., number to string)

pub fn strict_mode(&self) -> bool

Returns whether to validate struct fields strictly

pub fn struct_mode(&self) -> StructMode

Returns how to decode struct fields

pub fn ignore_type_conflicts(&self) -> bool

Returns whether to treat columns with incompatible types as missing (i.e. NULL)

pub fn decoder_factory(&self) -> Option<&Arc<dyn DecoderFactory>>

Returns the optional hook for customizing decoding behavior

pub fn make_decoder( &self, field: &FieldRef, is_nullable: bool, ) -> Result<Box<dyn ArrayDecoder>, ArrowError>

Create a decoder for a type.

This is the standard way to create child decoders from within a decoder implementation.

pub fn make_builtin_decoder( &self, field: &FieldRef, is_nullable: bool, ) -> Result<Box<dyn ArrayDecoder>, ArrowError>

Create the decoder the reader would use for field, ignoring any DecoderFactory.

Lets a factory build on the reader’s own decoder, including for the field it was asked about — which Self::make_decoder cannot do without looping.