uqa-execution 0.4.0

Volcano physical operators with row-batch pipelines
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//
// Unified Query Algebra
//
// Copyright (c) 2023-2026 Cognica, Inc.
//

//! Catalog value and row construction.

use uqa_core::{ArrayValue, Value};
use uqa_sql::{ResultRow, SQLError};

pub fn catalog_name() -> Value {
    Value::Str("uqa".into())
}

pub fn catalog_usize(value: usize, label: &str) -> Result<i64, SQLError> {
    i64::try_from(value).map_err(|_| {
        SQLError::Internal(format!(
            "{label} exceeds the SQL catalog BIGINT representation"
        ))
    })
}

pub fn catalog_ordinal(index: usize, label: &str) -> Result<i64, SQLError> {
    let ordinal = index
        .checked_add(1)
        .ok_or_else(|| SQLError::Internal(format!("{label} ordinal overflow")))?;
    catalog_usize(ordinal, label)
}

pub fn str_value(value: impl Into<String>) -> Value {
    Value::Str(value.into())
}

pub fn int_value(value: i64) -> Value {
    Value::Int(value)
}

pub fn bool_value(value: bool) -> Value {
    Value::Bool(value)
}

pub fn catalog_int2vector(values: Vec<Value>, label: &str) -> Result<Value, SQLError> {
    catalog_vector(uqa_core::LegacyVectorKind::SmallInteger, values, label)
}

pub fn catalog_oidvector(values: Vec<Value>, label: &str) -> Result<Value, SQLError> {
    catalog_vector(uqa_core::LegacyVectorKind::Oid, values, label)
}

fn catalog_vector(
    kind: uqa_core::LegacyVectorKind,
    values: Vec<Value>,
    label: &str,
) -> Result<Value, SQLError> {
    uqa_core::LegacyVectorValue::try_new(kind, values)
        .map(Value::LegacyVector)
        .ok_or_else(|| {
            SQLError::Internal(format!("{label} has invalid {} elements", kind.type_name()))
        })
}

pub fn catalog_array(values: Vec<Value>, label: &str) -> Result<Value, SQLError> {
    ArrayValue::try_new(values)
        .map(Value::Array)
        .ok_or_else(|| SQLError::Internal(format!("{label} has non-rectangular dimensions")))
}

pub fn row(entries: impl IntoIterator<Item = (&'static str, Value)>) -> ResultRow {
    let mut out = ResultRow::new();
    for (key, value) in entries {
        out.insert(key.to_string(), value);
    }
    out
}