Method get_or_insert_key

arrow-array/src/builder/primitive_dictionary_builder.rs:283–295

(&mut self, value: V::Native)

{
    #[inline]
    fn get_or_insert_key(&mut self, value: V::Native) -> Result<K::Native, ArrowError> {
        match self.map.get(&Value(value)) {
            Some(&key) => {
                Ok(K::Native::from_usize(key).ok_or(ArrowError::DictionaryKeyOverflowError)?)
            }
            None => {
                let key = self.values_builder.len();
                self.values_builder.append_value(value);
                self.map.insert(Value(value), key);
                Ok(K::Native::from_usize(key).ok_or(ArrowError::DictionaryKeyOverflowError)?)
            }
        }
    }

    /// Append a primitive value to the array. Return an existing index
    /// if already present in the values array or a new index if the