Struct PrefixPlusCounterGenerator 

pub struct PrefixPlusCounterGenerator { /* private fields */ }

Generate a sequence of strings with a prefix and a counter

For example, if the prefix is “user_” the the strings will be “user_0”, “user_1”, …

Implementations

impl PrefixPlusCounterGenerator

pub fn new(prefix: String, is_large: bool) -> Self

Trait Implementations

impl ArrayGenerator for PrefixPlusCounterGenerator

fn generate( &mut self, length: RowCount, _rng: &mut Xoshiro256PlusPlus, ) -> Result<Arc<dyn Array>, ArrowError>

Generate an array of the given length

fn data_type(&self) -> &DataType

Get the data type of the array that this generator produces

fn element_size_bytes(&self) -> Option<ByteCount>

Get the size of each element in bytes

fn generate_default( &mut self, length: RowCount, ) -> Result<Arc<dyn Array>, ArrowError>

Generate an array of the given length using a new RNG with the default seed

fn metadata(&self) -> Option<HashMap<String, String>>

Gets metadata that should be associated with the field generated by this generator

impl Debug for PrefixPlusCounterGenerator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.