538 lines
14 KiB
V
538 lines
14 KiB
V
module pg
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import orm
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import time
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import net.conv
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// ---- ORM on Conn (single pinned connection) ----
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// select is used internally by V's ORM for processing `SELECT ` queries.
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pub fn (c &Conn) select(config orm.SelectConfig, data orm.QueryData, where orm.QueryData) ![][]orm.Primitive {
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c.ensure_active()!
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where_with_tenant := orm.apply_tenant_filter(config.table, where)
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query := orm.orm_select_gen(config, '"', true, '$', 1, where_with_tenant)
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rows := pg_stmt_worker(c, query, where_with_tenant, data)!
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mut ret := [][]orm.Primitive{}
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for row in rows {
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mut row_data := []orm.Primitive{}
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for i, val in row.vals {
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row_data << val_to_primitive(val, config.types[i])!
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}
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ret << row_data
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}
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return ret
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}
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// insert is used internally by V's ORM for processing `INSERT ` queries.
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pub fn (c &Conn) insert(table orm.Table, data orm.QueryData) ! {
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c.ensure_active()!
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query, converted_data :=
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orm.orm_stmt_gen(.pg, table, '"', .insert, true, '$', 1, data, orm.QueryData{})
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pg_stmt_worker(c, query, converted_data, orm.QueryData{})!
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}
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// update is used internally by V's ORM for processing `UPDATE ` queries.
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pub fn (c &Conn) update(table orm.Table, data orm.QueryData, where orm.QueryData) ! {
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c.ensure_active()!
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where_with_tenant := orm.apply_tenant_filter(table, where)
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query, _ := orm.orm_stmt_gen(.default, table, '"', .update, true, '$', 1, data,
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where_with_tenant)
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pg_stmt_worker(c, query, data, where_with_tenant)!
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}
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// delete is used internally by V's ORM for processing `DELETE ` queries.
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pub fn (c &Conn) delete(table orm.Table, where orm.QueryData) ! {
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c.ensure_active()!
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where_with_tenant := orm.apply_tenant_filter(table, where)
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query, _ := orm.orm_stmt_gen(.default, table, '"', .delete, true, '$', 1, orm.QueryData{},
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where_with_tenant)
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pg_stmt_worker(c, query, orm.QueryData{}, where_with_tenant)!
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}
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// last_id is used internally by V's ORM for post-processing `INSERT ` queries.
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pub fn (c &Conn) last_id() int {
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query := 'SELECT LASTVAL();'
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return c.q_int(query) or { 0 }
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}
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// create is used internally by V's ORM for processing table creation queries (DDL).
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pub fn (c &Conn) create(table orm.Table, fields []orm.TableField) ! {
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query := orm.orm_table_gen(.pg, table, '"', true, 0, fields, pg_type_from_v, false) or {
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return err
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}
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stmts := query.split(';')
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for stmt in stmts {
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if stmt != '' {
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c.exec(stmt + ';')!
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}
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}
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}
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// drop is used internally by V's ORM for processing table destroying queries (DDL).
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pub fn (c &Conn) drop(table orm.Table) ! {
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query := 'DROP TABLE "${table.name}";'
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c.exec(query)!
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}
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// orm_begin starts a transaction on this conn.
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pub fn (c &Conn) orm_begin() ! {
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c.begin_on_conn()!
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}
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// orm_commit commits the transaction on this conn.
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pub fn (c &Conn) orm_commit() ! {
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c.commit()!
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}
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// orm_rollback rolls back the transaction on this conn.
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pub fn (c &Conn) orm_rollback() ! {
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c.rollback()!
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}
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// orm_savepoint creates a savepoint on this conn.
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pub fn (c &Conn) orm_savepoint(name string) ! {
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c.savepoint(name)!
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}
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// orm_rollback_to rolls back to a savepoint on this conn.
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pub fn (c &Conn) orm_rollback_to(name string) ! {
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c.rollback_to(name)!
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}
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// orm_release_savepoint releases a savepoint on this conn.
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pub fn (c &Conn) orm_release_savepoint(name string) ! {
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c.release_savepoint(name)!
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}
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// ---- ORM on DB (acquire-use-release per call) ----
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// select acquires a conn from the pool and runs the ORM SELECT on it.
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pub fn (mut db DB) select(config orm.SelectConfig, data orm.QueryData, where orm.QueryData) ![][]orm.Primitive {
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mut c := db.pool.acquire()!
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defer {
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c.close() or {}
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}
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return c.select(config, data, where)
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}
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// insert acquires a conn from the pool, runs the ORM INSERT on it, and
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// stashes LASTVAL() captured on the same session for the calling thread.
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// V's `sql db { insert ... }` macro emits a follow-up `db.last_id()` call;
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// stashing here lets that read return the correct id even though the pool
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// may hand out a different conn for the second call.
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pub fn (mut db DB) insert(table orm.Table, data orm.QueryData) ! {
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mut c := db.pool.acquire()!
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defer {
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c.close() or {}
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}
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c.insert(table, data)!
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db.pool.stash_last_id(c.last_id())
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}
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// update acquires a conn from the pool and runs the ORM UPDATE on it.
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pub fn (mut db DB) update(table orm.Table, data orm.QueryData, where orm.QueryData) ! {
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mut c := db.pool.acquire()!
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defer {
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c.close() or {}
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}
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c.update(table, data, where)!
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}
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// delete acquires a conn from the pool and runs the ORM DELETE on it.
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pub fn (mut db DB) delete(table orm.Table, where orm.QueryData) ! {
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mut c := db.pool.acquire()!
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defer {
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c.close() or {}
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}
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c.delete(table, where)!
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}
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// create acquires a conn from the pool and runs CREATE TABLE on it.
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pub fn (mut db DB) create(table orm.Table, fields []orm.TableField) ! {
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mut c := db.pool.acquire()!
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defer {
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c.close() or {}
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}
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c.create(table, fields)!
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}
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// drop acquires a conn from the pool and runs DROP TABLE on it.
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pub fn (mut db DB) drop(table orm.Table) ! {
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mut c := db.pool.acquire()!
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defer {
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c.close() or {}
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}
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c.drop(table)!
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}
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// last_id returns the id stashed by this thread's most recent `DB.insert`
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// (or 0 if there is none). LASTVAL() itself is session-scoped, so calling
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// it on a freshly-checked-out pool conn would return the wrong value or 0;
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// `DB.insert` captures it on the same conn that ran the INSERT and stashes
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// it per-thread, which is what V's ORM macro expects.
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pub fn (mut db DB) last_id() int {
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return db.pool.take_last_id()
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}
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// ---- ORM on Tx (use the pinned conn) ----
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// select runs the ORM SELECT on the pinned transaction conn.
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pub fn (mut tx Tx) select(config orm.SelectConfig, data orm.QueryData, where orm.QueryData) ![][]orm.Primitive {
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tx.ensure_active()!
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return tx.conn.select(config, data, where)
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}
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// insert runs the ORM INSERT on the pinned transaction conn.
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pub fn (mut tx Tx) insert(table orm.Table, data orm.QueryData) ! {
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tx.ensure_active()!
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tx.conn.insert(table, data)!
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}
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// update runs the ORM UPDATE on the pinned transaction conn.
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pub fn (mut tx Tx) update(table orm.Table, data orm.QueryData, where orm.QueryData) ! {
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tx.ensure_active()!
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tx.conn.update(table, data, where)!
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}
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// delete runs the ORM DELETE on the pinned transaction conn.
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pub fn (mut tx Tx) delete(table orm.Table, where orm.QueryData) ! {
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tx.ensure_active()!
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tx.conn.delete(table, where)!
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}
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// create runs CREATE TABLE on the pinned transaction conn.
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pub fn (mut tx Tx) create(table orm.Table, fields []orm.TableField) ! {
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tx.ensure_active()!
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tx.conn.create(table, fields)!
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}
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// drop runs DROP TABLE on the pinned transaction conn.
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pub fn (mut tx Tx) drop(table orm.Table) ! {
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tx.ensure_active()!
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tx.conn.drop(table)!
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}
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// last_id returns the last inserted id on the pinned conn.
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pub fn (mut tx Tx) last_id() int {
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if tx.done || isnil(tx.conn) {
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return 0
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}
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return tx.conn.last_id()
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}
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// orm_begin is a no-op on Tx (begin already ran when the Tx was created).
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// It exists so Tx satisfies `orm.TransactionalConnection` for nested savepoints.
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pub fn (mut tx Tx) orm_begin() ! {
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}
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// orm_commit commits the Tx.
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pub fn (mut tx Tx) orm_commit() ! {
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tx.commit()!
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}
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// orm_rollback rolls back the Tx.
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pub fn (mut tx Tx) orm_rollback() ! {
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tx.rollback()!
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}
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// orm_savepoint creates a savepoint inside the Tx.
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pub fn (mut tx Tx) orm_savepoint(name string) ! {
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tx.savepoint(name)!
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}
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// orm_rollback_to rolls back to a savepoint inside the Tx.
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pub fn (mut tx Tx) orm_rollback_to(name string) ! {
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tx.rollback_to(name)!
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}
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// orm_release_savepoint releases a savepoint inside the Tx.
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pub fn (mut tx Tx) orm_release_savepoint(name string) ! {
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tx.release_savepoint(name)!
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}
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// ---- utils ----
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fn pg_stmt_binder(mut types []u32, mut vals []&char, mut lens []int, mut formats []int, d orm.QueryData) {
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for data in d.data {
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pg_stmt_match(mut types, mut vals, mut lens, mut formats, data)
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}
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}
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fn pg_stmt_match_array[T](mut types []u32, mut vals []&char, mut lens []int, mut formats []int, data []T) {
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for element in data {
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pg_stmt_match(mut types, mut vals, mut lens, mut formats, orm.Primitive(element))
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}
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}
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fn pg_stmt_match(mut types []u32, mut vals []&char, mut lens []int, mut formats []int, data orm.Primitive) {
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match data {
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bool {
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types << u32(Oid.t_bool)
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vals << &char(&data)
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lens << int(sizeof(bool))
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formats << 1
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}
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u8 {
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types << u32(Oid.t_char)
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vals << &char(&data)
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lens << int(sizeof(u8))
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formats << 1
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}
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u16 {
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types << u32(Oid.t_int2)
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num := conv.hton16(data)
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vals << &char(&num)
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lens << int(sizeof(u16))
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formats << 1
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}
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u32 {
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types << u32(Oid.t_int4)
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num := conv.hton32(data)
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vals << &char(&num)
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lens << int(sizeof(u32))
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formats << 1
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}
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u64 {
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types << u32(Oid.t_int8)
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num := conv.hton64(data)
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vals << &char(&num)
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lens << int(sizeof(u64))
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formats << 1
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}
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i8 {
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types << u32(Oid.t_char)
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vals << &char(&data)
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lens << int(sizeof(i8))
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formats << 1
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}
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i16 {
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types << u32(Oid.t_int2)
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num := conv.hton16(u16(data))
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vals << &char(&num)
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lens << int(sizeof(i16))
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formats << 1
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}
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int {
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types << u32(Oid.t_int4)
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num := conv.hton32(u32(data))
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vals << &char(&num)
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lens << int(sizeof(int))
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formats << 1
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}
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i64 {
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types << u32(Oid.t_int8)
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num := conv.hton64(u64(data))
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vals << &char(&num)
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lens << int(sizeof(i64))
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formats << 1
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}
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f32 {
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types << u32(Oid.t_float4)
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num := conv.htonf32(f32(data))
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vals << &char(&num)
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lens << int(sizeof(f32))
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formats << 1
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}
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f64 {
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types << u32(Oid.t_float8)
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num := conv.htonf64(f64(data))
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vals << &char(&num)
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lens << int(sizeof(f64))
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formats << 1
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}
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string {
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// If paramTypes is NULL, or any particular element in the array is zero,
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// the server infers a data type for the parameter symbol in the same way
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// it would do for an untyped literal string.
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types << u32(0)
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vals << &char(data.str)
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lens << data.len
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formats << 0
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}
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time.Time {
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datetime := data.format_ss()
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types << u32(0)
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vals << &char(datetime.str)
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lens << datetime.len
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formats << 0
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}
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orm.InfixType {
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pg_stmt_match(mut types, mut vals, mut lens, mut formats, data.right)
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}
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orm.Null {
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types << u32(0) // we do not know col type, let server infer
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vals << &char(unsafe { nil }) // NULL pointer indicates NULL
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lens << int(0) // ignored
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formats << 0 // ignored
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}
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[]orm.Primitive {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]bool {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]f32 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]f64 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]i16 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]i64 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]i8 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]int {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]string {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]time.Time {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]u16 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]u32 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]u64 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]u8 {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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[]orm.InfixType {
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pg_stmt_match_array(mut types, mut vals, mut lens, mut formats, data)
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}
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}
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}
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fn pg_type_from_v(typ int) !string {
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str := match typ {
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orm.type_idx['i8'], orm.type_idx['i16'], orm.type_idx['u8'], orm.type_idx['u16'] {
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'SMALLINT'
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}
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orm.type_idx['bool'] {
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'BOOLEAN'
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}
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orm.type_idx['int'], orm.type_idx['u32'] {
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'INT'
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}
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orm.time_ {
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'TIMESTAMP'
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}
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orm.enum_ {
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'BIGINT'
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}
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orm.type_idx['i64'], orm.type_idx['u64'] {
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'BIGINT'
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}
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orm.float[0] {
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'REAL'
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}
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orm.float[1] {
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'DOUBLE PRECISION'
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}
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orm.type_string {
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'TEXT'
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}
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orm.serial {
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'SERIAL'
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}
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else {
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''
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}
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}
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if str == '' {
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return error('Unknown type ${typ}')
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}
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return str
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}
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fn val_to_primitive(val ?string, typ int) !orm.Primitive {
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if str := val {
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match typ {
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// bool
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orm.type_idx['bool'] {
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return orm.Primitive(str == 't')
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}
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// i8
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orm.type_idx['i8'] {
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return orm.Primitive(str.i8())
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}
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// i16
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orm.type_idx['i16'] {
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return orm.Primitive(str.i16())
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}
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// int
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orm.type_idx['int'] {
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return orm.Primitive(str.int())
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}
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// i64
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orm.type_idx['i64'] {
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return orm.Primitive(str.i64())
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}
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// u8
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orm.type_idx['u8'] {
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data := str.i8()
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return orm.Primitive(*unsafe { &u8(&data) })
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}
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// u16
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orm.type_idx['u16'] {
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data := str.i16()
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return orm.Primitive(*unsafe { &u16(&data) })
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}
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// u32
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orm.type_idx['u32'] {
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data := str.int()
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return orm.Primitive(*unsafe { &u32(&data) })
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}
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// u64
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orm.type_idx['u64'] {
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data := str.i64()
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return orm.Primitive(*unsafe { &u64(&data) })
|
|
}
|
|
// f32
|
|
orm.type_idx['f32'] {
|
|
return orm.Primitive(str.f32())
|
|
}
|
|
// f64
|
|
orm.type_idx['f64'] {
|
|
return orm.Primitive(str.f64())
|
|
}
|
|
orm.type_string {
|
|
return orm.Primitive(str)
|
|
}
|
|
orm.time_ {
|
|
if str.contains_any(' /:-') {
|
|
date_time_str := time.parse(str)!
|
|
return orm.Primitive(date_time_str)
|
|
}
|
|
|
|
timestamp := str.int()
|
|
return orm.Primitive(time.unix(timestamp))
|
|
}
|
|
orm.enum_ {
|
|
return orm.Primitive(str.i64())
|
|
}
|
|
else {}
|
|
}
|
|
|
|
return error('Unknown field type ${typ}')
|
|
} else {
|
|
return orm.Null{}
|
|
}
|
|
}
|