Struct TpchGenerator 

pub struct TpchGenerator { /* private fields */ }

TPC-H data generator

The main entry point for generating TPC-H benchmark data. Use the builder pattern via TpchGenerator::builder() to configure and create instances.

Examples

use tpchgen_cli::{TpchGenerator, Table, OutputFormat};
use std::path::PathBuf;
use ::parquet::basic::ZstdLevel;
// Generate all tables at scale factor 1 in TBL format
TpchGenerator::builder()
    .with_scale_factor(1.0)
    .with_output_dir(PathBuf::from("./data"))
    .build()
    .generate()
    .await?;

// Generate specific tables in Parquet format with compression
TpchGenerator::builder()
    .with_scale_factor(10.0)
    .with_output_dir(PathBuf::from("./benchmark_data"))
    .with_tables(vec![Table::Orders, Table::Lineitem])
    .with_format(OutputFormat::Parquet)
    .with_parquet_compression(tpchgen_cli::Compression::ZSTD(ZstdLevel::try_new(1).unwrap()))
    .with_num_threads(16)
    .build()
    .generate()
    .await?;

Implementations

impl TpchGenerator

pub fn builder() -> TpchGeneratorBuilder

Create a new builder for configuring the generator

This is the recommended way to construct a TpchGenerator.

Examples

use tpchgen_cli::TpchGenerator;

let generator = TpchGenerator::builder()
    .with_scale_factor(1.0)
    .build();

pub async fn generate(self) -> Result<()>

Generate TPC-H data with the configured settings

This async method performs the actual data generation, creating files in the configured output directory (or writing to stdout if configured).

Returns

• Ok(()) on successful generation
• Err(io::Error) if file I/O or generation fails

Examples

use tpchgen_cli::TpchGenerator;

TpchGenerator::builder()
    .with_scale_factor(1.0)
    .build()
    .generate()
    .await?;