use bumpalo::Bump;
use reifydb_core::value::column::{Column, columns::Columns, data::ColumnData};
use reifydb_rql::{
ast::parse_str,
fingerprint::{request::fingerprint_request, statement::fingerprint_statement},
};
use reifydb_type::value::r#type::Type;
use crate::function::{Function, FunctionCapability, FunctionContext, FunctionInfo, error::FunctionError};
pub struct RqlFingerprint {
info: FunctionInfo,
}
impl Default for RqlFingerprint {
fn default() -> Self {
Self::new()
}
}
impl RqlFingerprint {
pub fn new() -> Self {
Self {
info: FunctionInfo::new("rql::fingerprint"),
}
}
}
impl Function for RqlFingerprint {
fn info(&self) -> &FunctionInfo {
&self.info
}
fn capabilities(&self) -> &[FunctionCapability] {
&[FunctionCapability::Scalar]
}
fn return_type(&self, _input_types: &[Type]) -> Type {
Type::Utf8
}
fn execute(&self, ctx: &FunctionContext, args: &Columns) -> Result<Columns, FunctionError> {
if args.len() != 1 {
return Err(FunctionError::ArityMismatch {
function: ctx.fragment.clone(),
expected: 1,
actual: args.len(),
});
}
let column = &args[0];
let (data, bitvec) = column.data().unwrap_option();
let row_count = data.len();
match data {
ColumnData::Utf8 {
container,
..
} => {
let mut result_data = Vec::with_capacity(row_count);
let mut result_bitvec = Vec::with_capacity(row_count);
for i in 0..row_count {
if container.is_defined(i) {
let query = &container[i];
let bump = Bump::new();
let stmts = parse_str(&bump, query).map_err(|e| {
FunctionError::ExecutionFailed {
function: ctx.fragment.clone(),
reason: format!("{e}"),
}
})?;
let fps: Vec<_> =
stmts.iter().map(|s| fingerprint_statement(s)).collect();
let req = fingerprint_request(&fps);
result_data.push(req.to_hex());
result_bitvec.push(true);
} else {
result_data.push(String::new());
result_bitvec.push(false);
}
}
let inner_data = ColumnData::utf8_with_bitvec(result_data, result_bitvec);
let final_data = match bitvec {
Some(bv) => ColumnData::Option {
inner: Box::new(inner_data),
bitvec: bv.clone(),
},
None => inner_data,
};
Ok(Columns::new(vec![Column::new(ctx.fragment.clone(), final_data)]))
}
other => Err(FunctionError::InvalidArgumentType {
function: ctx.fragment.clone(),
argument_index: 0,
expected: vec![Type::Utf8],
actual: other.get_type(),
}),
}
}
}