Struct ObjectFieldBuilder 

pub struct ObjectFieldBuilder<'o, 'v, 's, S>
where
    S: BuilderSpecificState,
{
    key: &'s str,
    builder: &'o mut ObjectBuilder<'v, S>,
}

A VariantBuilderExt that inserts a new field into a variant object.

Fields

key: &'s str

builder: &'o mut ObjectBuilder<'v, S>

Implementations

impl<'o, 'v, 's, S> ObjectFieldBuilder<'o, 'v, 's, S>

where S: BuilderSpecificState,

pub fn new( key: &'s str, builder: &'o mut ObjectBuilder<'v, S>, ) -> ObjectFieldBuilder<'o, 'v, 's, S>

Trait Implementations

impl<S> VariantBuilderExt for ObjectFieldBuilder<'_, '_, '_, S>

where S: BuilderSpecificState,

fn append_null(&mut self)

A NULL object field is interpreted as missing, so nothing gets inserted at all.

type State<'a> = ObjectState<'a> where ObjectFieldBuilder<'_, '_, '_, S>: 'a

The builder specific state used by nested builders

fn append_value<'m, 'v>(&mut self, value: impl Into<Variant<'m, 'v>>)

Appends a new variant value to this builder. See e.g. VariantBuilder::append_value.

fn try_new_list( &mut self, ) -> Result<ListBuilder<'_, <ObjectFieldBuilder<'_, '_, '_, S> as VariantBuilderExt>::State<'_>>, ArrowError>

Creates a nested list builder. See e.g. VariantBuilder::new_list. Returns an error if the nested builder cannot be created, see e.g. ObjectBuilder::try_new_list.

fn try_new_object( &mut self, ) -> Result<ObjectBuilder<'_, <ObjectFieldBuilder<'_, '_, '_, S> as VariantBuilderExt>::State<'_>>, ArrowError>

Creates a nested object builder. See e.g. VariantBuilder::new_object. Returns an error if the nested builder cannot be created, see e.g. ObjectBuilder::try_new_object.

fn new_list(&mut self) -> ListBuilder<'_, Self::State<'_>>

Creates a nested list builder. See e.g. VariantBuilder::new_list. Panics if the nested builder cannot be created, see e.g. ObjectBuilder::new_list.

fn new_object(&mut self) -> ObjectBuilder<'_, Self::State<'_>>

Creates a nested object builder. See e.g. VariantBuilder::new_object. Panics if the nested builder cannot be created, see e.g. ObjectBuilder::new_object.