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use crate::sql_entity_graph::pgx_sql::PgxSql;
use crate::sql_entity_graph::to_sql::entity::ToSqlConfigEntity;
use crate::sql_entity_graph::to_sql::ToSql;
use crate::sql_entity_graph::{SqlGraphEntity, SqlGraphIdentifier};
use std::cmp::Ordering;
#[derive(Debug, Clone, Hash, PartialEq, Eq)]
pub struct PostgresHashEntity {
pub name: &'static str,
pub file: &'static str,
pub line: u32,
pub full_path: &'static str,
pub module_path: &'static str,
pub id: core::any::TypeId,
pub to_sql_config: ToSqlConfigEntity,
}
impl PostgresHashEntity {
pub(crate) fn fn_name(&self) -> String {
format!("{}_hash", self.name.to_lowercase())
}
}
impl Ord for PostgresHashEntity {
fn cmp(&self, other: &Self) -> Ordering {
self.file.cmp(other.file).then_with(|| self.file.cmp(other.file))
}
}
impl PartialOrd for PostgresHashEntity {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl From<PostgresHashEntity> for SqlGraphEntity {
fn from(val: PostgresHashEntity) -> Self {
SqlGraphEntity::Hash(val)
}
}
impl SqlGraphIdentifier for PostgresHashEntity {
fn dot_identifier(&self) -> String {
format!("hash {}", self.full_path)
}
fn rust_identifier(&self) -> String {
self.full_path.to_string()
}
fn file(&self) -> Option<&'static str> {
Some(self.file)
}
fn line(&self) -> Option<u32> {
Some(self.line)
}
}
impl ToSql for PostgresHashEntity {
#[tracing::instrument(level = "debug", err, skip(self, _context), fields(identifier = %self.rust_identifier()))]
fn to_sql(&self, _context: &PgxSql) -> eyre::Result<String> {
let sql = format!("\n\
-- {file}:{line}\n\
-- {full_path}\n\
CREATE OPERATOR FAMILY {name}_hash_ops USING hash;\n\
CREATE OPERATOR CLASS {name}_hash_ops DEFAULT FOR TYPE {name} USING hash FAMILY {name}_hash_ops AS\n\
\tOPERATOR 1 = ({name}, {name}),\n\
\tFUNCTION 1 {fn_name}({name});\
",
name = self.name,
full_path = self.full_path,
file = self.file,
line = self.line,
fn_name = self.fn_name(),
);
tracing::trace!(%sql);
Ok(sql)
}
}