arrow_flight::sql::metadata::sql_info

Struct SqlInfoUnionBuilder

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struct SqlInfoUnionBuilder {
    string_values: StringBuilder,
    bool_values: BooleanBuilder,
    bigint_values: Int64Builder,
    int32_bitmask_values: Int32Builder,
    string_list_values: ListBuilder<StringBuilder>,
    int32_to_int32_list_map_values: MapBuilder<Int32Builder, ListBuilder<Int32Builder>>,
    type_ids: Int8Builder,
    offsets: Int32Builder,
}
Expand description

Handles creating the dense UnionArray described by flightsql

incrementally build types/offset of the dense union. See Union Spec for details.

*  value: dense_union<
*              string_value: utf8,
*              bool_value: bool,
*              bigint_value: int64,
*              int32_bitmask: int32,
*              string_list: list<string_data: utf8>
*              int32_to_int32_list_map: map<key: int32, value: list<$data$: int32>>
* >

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§string_values: StringBuilder§bool_values: BooleanBuilder§bigint_values: Int64Builder§int32_bitmask_values: Int32Builder§string_list_values: ListBuilder<StringBuilder>§int32_to_int32_list_map_values: MapBuilder<Int32Builder, ListBuilder<Int32Builder>>§type_ids: Int8Builder§offsets: Int32Builder

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impl SqlInfoUnionBuilder

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pub fn new() -> Self

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pub fn schema() -> &'static DataType

Returns the DataType created by this builder

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pub fn append_value(&mut self, v: &SqlInfoValue) -> Result<()>

Append the specified value to this builder

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pub fn finish(self) -> UnionArray

Complete the construction and build the UnionArray

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