uqa-sql 0.3.6

PostgreSQL-compatible SQL compiler built on libpg_query
Documentation 
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//
// Unified Query Algebra
//
// Copyright (c) 2023-2026 Cognica, Inc.
//

//! Stable identities for SQL catalog objects.

pub fn stable_oid(kind: &str, name: &str) -> i64 {
    let mut hash = 14_695_981_039_346_656_037_u64;
    for byte in kind.bytes().chain(*b":").chain(name.bytes()) {
        hash ^= u64::from(byte);
        hash = hash.wrapping_mul(1_099_511_628_211);
    }
    10_000 + i64::try_from(hash % 2_000_000_000).unwrap_or(0)
}

pub fn stable_object_oid(kind: &str, object_id: &[u8; 16]) -> i64 {
    let mut hash = 14_695_981_039_346_656_037_u64;
    for byte in kind.bytes().chain(*b":").chain(object_id.iter().copied()) {
        hash ^= u64::from(byte);
        hash = hash.wrapping_mul(1_099_511_628_211);
    }
    10_000 + i64::try_from(hash % 2_000_000_000).unwrap_or(0)
}

pub fn schema_oid(schema: &str) -> i64 {
    match schema {
        "pg_catalog" => 11,
        "public" => 2200,
        "information_schema" => 13_293,
        other => stable_oid("namespace", other),
    }
}

pub fn relation_oid(kind: &str, schema: &str, name: &str) -> i64 {
    stable_oid(kind, &format!("{schema}.{name}"))
}

pub fn current_user_oid() -> i64 {
    10
}

pub fn current_user_name() -> &'static str {
    "uqa"
}