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use crate::sql_entity_graph::{
mapping::RustSqlMapping,
pgx_sql::PgxSql,
to_sql::{entity::ToSqlConfigEntity, ToSql},
SqlGraphEntity, SqlGraphIdentifier,
};
use eyre::eyre;
use std::{
cmp::Ordering,
hash::{Hash, Hasher},
};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct PostgresTypeEntity {
pub name: &'static str,
pub file: &'static str,
pub line: u32,
pub full_path: &'static str,
pub module_path: &'static str,
pub mappings: std::collections::HashSet<RustSqlMapping>,
pub in_fn: &'static str,
pub in_fn_module_path: String,
pub out_fn: &'static str,
pub out_fn_module_path: String,
pub to_sql_config: ToSqlConfigEntity,
}
impl Hash for PostgresTypeEntity {
fn hash<H: Hasher>(&self, state: &mut H) {
self.full_path.hash(state);
}
}
impl Ord for PostgresTypeEntity {
fn cmp(&self, other: &Self) -> Ordering {
self.file
.cmp(other.file)
.then_with(|| self.file.cmp(other.file))
}
}
impl PartialOrd for PostgresTypeEntity {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl PostgresTypeEntity {
pub fn id_matches(&self, candidate: &core::any::TypeId) -> bool {
self.mappings.iter().any(|tester| *candidate == tester.id)
}
}
impl Into<SqlGraphEntity> for PostgresTypeEntity {
fn into(self) -> SqlGraphEntity {
SqlGraphEntity::Type(self)
}
}
impl SqlGraphIdentifier for PostgresTypeEntity {
fn dot_identifier(&self) -> String {
format!("type {}", 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 PostgresTypeEntity {
#[tracing::instrument(level = "debug", err, skip(self, context), fields(identifier = %self.rust_identifier()))]
fn to_sql(&self, context: &PgxSql) -> eyre::Result<String> {
let self_index = context.types[self];
let item_node = &context.graph[self_index];
let item = match item_node {
SqlGraphEntity::Type(item) => item,
_ => return Err(eyre!("Was not called on a Type. Got: {:?}", item_node)),
};
let in_fn_module_path = if !item.in_fn_module_path.is_empty() {
item.in_fn_module_path.clone()
} else {
item.module_path.to_string()
};
let in_fn_path = format!(
"{module_path}{maybe_colons}{in_fn}",
module_path = in_fn_module_path,
maybe_colons = if !in_fn_module_path.is_empty() {
"::"
} else {
""
},
in_fn = item.in_fn,
);
let (_, _index) = context
.externs
.iter()
.find(|(k, _v)| (**k).full_path == in_fn_path.as_str())
.ok_or_else(|| eyre::eyre!("Did not find `in_fn: {}`.", in_fn_path))?;
let (in_fn_graph_index, in_fn) = context
.graph
.neighbors_undirected(self_index)
.find_map(|neighbor| match &context.graph[neighbor] {
SqlGraphEntity::Function(func) if func.full_path == in_fn_path => {
Some((neighbor, func))
}
_ => None,
})
.ok_or_else(|| eyre!("Could not find in_fn graph entity."))?;
tracing::trace!(in_fn = ?in_fn_path, "Found matching `in_fn`");
let in_fn_sql = in_fn.to_sql(context)?;
tracing::trace!(%in_fn_sql);
let out_fn_module_path = if !item.out_fn_module_path.is_empty() {
item.out_fn_module_path.clone()
} else {
item.module_path.to_string()
};
let out_fn_path = format!(
"{module_path}{maybe_colons}{out_fn}",
module_path = out_fn_module_path,
maybe_colons = if !out_fn_module_path.is_empty() {
"::"
} else {
""
},
out_fn = item.out_fn,
);
let (_, _index) = context
.externs
.iter()
.find(|(k, _v)| (**k).full_path == out_fn_path.as_str())
.ok_or_else(|| eyre::eyre!("Did not find `out_fn: {}`.", out_fn_path))?;
let (out_fn_graph_index, out_fn) = context
.graph
.neighbors_undirected(self_index)
.find_map(|neighbor| match &context.graph[neighbor] {
SqlGraphEntity::Function(func) if func.full_path == out_fn_path => {
Some((neighbor, func))
}
_ => None,
})
.ok_or_else(|| eyre!("Could not find out_fn graph entity."))?;
tracing::trace!(out_fn = ?out_fn_path, "Found matching `out_fn`");
let out_fn_sql = out_fn.to_sql(context)?;
tracing::trace!(%out_fn_sql);
let shell_type = format!(
"\n\
-- {file}:{line}\n\
-- {full_path}\n\
CREATE TYPE {schema}{name};\
",
schema = context.schema_prefix_for(&self_index),
full_path = item.full_path,
file = item.file,
line = item.line,
name = item.name,
);
tracing::trace!(sql = %shell_type);
let materialized_type = format!("\n\
-- {file}:{line}\n\
-- {full_path}\n\
CREATE TYPE {schema}{name} (\n\
\tINTERNALLENGTH = variable,\n\
\tINPUT = {schema_prefix_in_fn}{in_fn}, /* {in_fn_path} */\n\
\tOUTPUT = {schema_prefix_out_fn}{out_fn}, /* {out_fn_path} */\n\
\tSTORAGE = extended\n\
);\
",
full_path = item.full_path,
file = item.file,
line = item.line,
schema = context.schema_prefix_for(&self_index),
name = item.name,
schema_prefix_in_fn = context.schema_prefix_for(&in_fn_graph_index),
in_fn = item.in_fn,
in_fn_path = in_fn_path,
schema_prefix_out_fn = context.schema_prefix_for(&out_fn_graph_index),
out_fn = item.out_fn,
out_fn_path = out_fn_path,
);
tracing::trace!(sql = %materialized_type);
Ok(shell_type + "\n" + &in_fn_sql + "\n" + &out_fn_sql + "\n" + &materialized_type)
}
}
