datafusion_functions::strings

Struct StringArrayBuilder

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pub struct StringArrayBuilder { /* private fields */ }
Expand description

Optimized version of the StringBuilder in Arrow that:

  1. Precalculating the expected length of the result, avoiding reallocations.
  2. Avoids creating / incrementally creating a NullBufferBuilder

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impl StringArrayBuilder

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pub fn with_capacity(item_capacity: usize, data_capacity: usize) -> Self

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pub fn write<const CHECK_VALID: bool>( &mut self, column: &ColumnarValueRef<'_>, i: usize, )

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pub fn append_offset(&mut self)

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pub fn finish(self, null_buffer: Option<NullBuffer>) -> StringArray

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