Struct mz_persist_types::dyn_struct::DynStructCol

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pub struct DynStructCol {
    pub(crate) len: usize,
    pub(crate) cfg: DynStructCfg,
    pub(crate) validity: Option<NullBuffer>,
    pub(crate) cols: Vec<DynColumnRef>,
}
Expand description

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§len: usize§cfg: DynStructCfg§validity: Option<NullBuffer>§cols: Vec<DynColumnRef>

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impl DynStructCol

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pub(crate) fn empty(cfg: DynStructCfg) -> Self

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fn cols(&self) -> impl Iterator<Item = (&str, &StatsFn, &DynColumnRef)>

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pub fn as_ref(&self) -> ColumnsRef

Explodes this non-optional struct column into its component fields.

Panics if this struct is optional.

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pub fn as_opt_ref(&self) -> ColumnsRef<ValidityRef>

Explodes this optional struct column into its component fields and validity.

If the column is actually non-option, succeeds and acts as if every value is a Some.

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pub(crate) fn stats( &self, validity: ValidityRef, ) -> Result<OptionStats<StructStats>, String>

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pub(crate) fn to_arrow_struct(&self) -> Option<StructArray>

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pub fn from_arrow(cfg: DynStructCfg, array: &dyn Array) -> Result<Self, String>

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pub(crate) fn validate(&self) -> Result<(), String>

Trait Implementations§

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impl ColumnGet<DynStruct> for DynStructCol

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fn get<'a>(&'a self, idx: usize) -> DynStructRef<'a>

Retrieves the value at index.
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impl ColumnGet<Option<DynStruct>> for DynStructCol

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fn get<'a>(&'a self, idx: usize) -> Option<DynStructRef<'a>>

Retrieves the value at index.
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impl ColumnRef<DynStructCfg> for DynStructCol

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fn cfg(&self) -> &DynStructCfg

Returns the super::ColumnCfg for this column.
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fn len(&self) -> usize

Returns the number of elements in this column.
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fn to_arrow(&self) -> Arc<dyn Array>

Returns this column as an arrow Array.
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fn from_arrow(cfg: &DynStructCfg, array: &dyn Array) -> Result<Self, String>

Constructs the column from an arrow Array.
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impl Debug for DynStructCol

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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 From<DynStructMut> for DynStructCol

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fn from(value: DynStructMut) -> Self

Converts to this type from the input type.
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impl StatsFrom<DynStructCol> for OptionStats<StructStats>

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fn stats_from(col: &DynStructCol, validity: ValidityRef) -> Self

Computes statistics from a column of data. Read more
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impl StatsFrom<DynStructCol> for StructStats

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fn stats_from(col: &DynStructCol, validity: ValidityRef) -> Self

Computes statistics from a column of data. Read more

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