Add valve api

api/s7_valves.py

@@ -0,0 +1,121 @@
+from psycopg.rows import Row
+from .s0_base import *
+from .change_set import ChangeSet
+import utility
+
+
+VALVES_TYPE_PRV = 'prv'
+VALVES_TYPE_PSV = 'psv'
+VALVES_TYPE_PBV = 'pbv'
+VALVES_TYPE_FCV = 'fcv'
+VALVES_TYPE_TCV = 'tcv'
+VALVES_TYPE_GPV = 'gpv'
+
+
+def add_valve(name: str, id: str, node1: str, node2: str, diameter: float = 0, type: str = VALVES_TYPE_PRV, setting: float = 0, minor_loss: float = 0) -> ChangeSet:
+    if not is_node(name, node1):
+        return
+    if not is_node(name, node2):
+        return
+
+    sql = f"insert into valves (id, node1, node2, diameter, type, setting, minor_loss) values ('{id}', '{node1}', '{node2}', {diameter}, '{type}', {setting}, {minor_loss});"
+    undo_sql = f'delete from valves where id = "{id}";'
+    return add_link(name, VALVE, id, sql, undo_sql)
+
+
+def _get_valve(name: str, id: str) -> Row | None:
+    return utility.query(name, f"select node1, node2, diameter, type, setting, minor_loss from valves where id = '{id}'")
+
+
+def delete_valve(name: str, id: str) -> ChangeSet:
+    if not is_valve(name, id):
+        return
+
+    row = _get_valve(name, id)
+    if row == None:
+        return
+
+    node1, node2, diameter, type, setting, minor_loss = row['node1'], row['node2'], row['diameter'], row['type'], row['setting'], row['minor_loss']
+
+    sql = f"delete from valves where id = '{id}';"
+    undo_sql = f'insert into valves (id, node1, node2, diameter, type, setting, minor_loss) values ("{id}", "{node1}", "{node2}", {diameter}, "{type}", {setting}, {minor_loss});'
+
+    return delete_link(name, VALVE, id, sql, undo_sql)
+
+
+def get_valve_node1(name: str, id: str) -> str | None:
+    row = _get_valve(name, id)
+    return float(row['node1']) if row != None else None
+
+
+def get_valve_node2(name: str, id: str) -> str | None:
+    row = _get_valve(name, id)
+    return float(row['node2']) if row != None else None
+
+
+def get_valve_diameter(name: str, id: str) -> float | None:
+    row = _get_valve(name, id)
+    return float(row['diameter']) if row != None else None
+
+
+def get_valve_type(name: str, id: str) -> str | None:
+    row = _get_valve(name, id)
+    return float(row['type']) if row != None else None
+
+
+def get_valve_setting(name: str, id: str) -> float | None:
+    row = _get_valve(name, id)
+    return float(row['setting']) if row != None else None
+
+
+def get_valve_minor_loss(name: str, id: str) -> float | None:
+    row = _get_valve(name, id)
+    return float(row['minor_loss']) if row != None else None
+
+
+def _set_valve(name: str, id: str, key: str, key_type: str, value: str, optional: bool = False) -> ChangeSet:
+    if not is_valve(name, id):
+        return
+
+    row = _get_valve(name, id)
+    if row == None:
+        return
+
+    return utility.update(name, VALVE, 'valves', 'id', id, key, key_type, row[key], value, optional)
+
+
+def set_valve_node1(name: str, id: str, node1: str) -> ChangeSet:
+    if not is_node(name, node1):
+        return
+
+    return _set_valve(name, id, 'node1', 'str', str(node1))
+
+
+def set_valve_node2(name: str, id: str, node2: str) -> ChangeSet:
+    if not is_node(name, node2):
+        return
+
+    return _set_valve(name, id, 'node2', 'str', str(node2))
+
+
+def set_valve_length(name: str, id: str, length: float) -> ChangeSet:
+    return _set_valve(name, id, 'length', 'float', str(length))
+
+
+def set_valve_diameter(name: str, id: str, diameter: float) -> ChangeSet:
+    return _set_valve(name, id, 'diameter', 'float', str(diameter))
+
+
+def set_valve_type(name: str, id: str, type: float) -> ChangeSet:
+    if type != VALVES_TYPE_PRV and type != VALVES_TYPE_PSV and type != VALVES_TYPE_PBV and type != VALVES_TYPE_FCV and type != VALVES_TYPE_TCV and type != VALVES_TYPE_GPV:
+        return ChangeSet()
+
+    return _set_valve(name, id, 'type', 'str', str(type))
+
+
+def set_valve_setting(name: str, id: str, setting: float) -> ChangeSet:
+    return _set_valve(name, id, 'setting', 'float', str(setting))
+
+
+def set_valve_minor_loss(name: str, id: str, minor_loss: float) -> ChangeSet:
+    return _set_valve(name, id, 'minor_loss', 'float', str(minor_loss))

script/sql/create/7.valves.sql

@@ -1,6 +1,6 @@
 -- [VALVES]
 
-CREATE TYPE VALVES_TYPE AS ENUM ('PRV', 'PSV', 'PBV', 'FCV', 'TCV', 'GPV');
+CREATE TYPE VALVES_TYPE AS ENUM ('prv', 'psv', 'pbv', 'fcv', 'tcv', 'gpv');
 
 CREATE TABLE VALVES
 (