Create a contract-aware wrapper for a Daf

Wraps a Daf data set with a contract for a specific computation. The returned object can be used with verify_input and verify_output to validate the data before and after computation.

Usage

contractor(computation, contract, daf, overwrite = FALSE)

Arguments

computation: Name of the computation (used for error messages)
contract: Contract created with create_contract
daf: Daf object to wrap
overwrite: If TRUE, allows overwriting existing output data

Value

A list with class "ContractDaf" containing:

computation: The computation name
contract: The contract specification
daf: The wrapped Daf object
overwrite: The overwrite flag

Details

This function provides a simplified R interface similar to Julia's contractor function. Use verify_input() before running your computation and verify_output() after to validate the data.

Examples

if (FALSE) { # \dontrun{
contract <- create_contract(
    axes = list(axis_contract("gene", RequiredInput, "Genes")),
    data = list(vector_contract("gene", "score", GuaranteedOutput, "numeric", "Scores"))
)
contract_daf <- contractor("my.computation", contract, daf)
verify_input(contract_daf$daf, contract_daf$contract)
# ... run computation ...
verify_output(contract_daf$daf, contract_daf$contract)
} # }