Struct DecoderContext 

pub struct DecoderContext {
    coerce_primitive: bool,
    strict_mode: bool,
    struct_mode: StructMode,
    ignore_type_conflicts: bool,
    decoder_factory: Option<Arc<dyn DecoderFactory>>,
}

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.

Fields

coerce_primitive: bool

Whether to coerce primitives to strings

strict_mode: bool

Whether to validate struct fields strictly

struct_mode: StructMode

How to decode struct fields

ignore_type_conflicts: bool

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

decoder_factory: Option<Arc<dyn DecoderFactory>>

An optional hook for customizing decoding behavior

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.