Update pipe api and test

api/s5_pipes.py

@@ -2,7 +2,9 @@ from typing import Any
 from psycopg.rows import Row
 from .s0_base import *
 from .change_set import ChangeSet
+from .s24_coordinates import *
 from .utility import *
+from .schema import *
 
 
 PIPE_STATUS_OPEN = 'open'
@@ -10,6 +12,131 @@ PIPE_STATUS_CLOSED = 'closed'
 PIPE_STATUS_CV = 'cv'
 
 
+schema: dict[str, dict[str, Any]] = { \
+    'id'        : define_property(str_type, False, True), \
+    'node1'     : define_property(str_type), \
+    'node2'     : define_property(str_type), \
+    'length'    : define_property(float_type), \
+    'diameter'  : define_property(float_type), \
+    'roughness' : define_property(float_type), \
+    'minor_loss': define_property(float_type), \
+    'status'    : define_property(str_type)}
+
+
+def get_pipe_schema(name: str) -> dict[str, dict[str, Any]]:
+    return schema
+
+
+def _query_pipe(name: str, id: str) -> Row | None:
+    return read(name, f"select * from pipes where id = '{id}'")
+
+
+def _get_pipe_node1(name: str, id: str) -> str | None:
+    row = _query_pipe(name, id)
+    return row['node1'] if row != None else None
+
+
+def _get_pipe_node2(name: str, id: str) -> str | None:
+    row = _query_pipe(name, id)
+    return row['node2'] if row != None else None
+
+
+def add_pipe(name: str, id: str, node1: str, node2: str, length: float = 0, diameter: float = 0, roughness: float = 0, minor_loss: float = 0, status: str = PIPE_STATUS_OPEN) -> ChangeSet:
+    if is_pipe(name, id):
+        return ChangeSet()
+    if not is_node(name, node1):
+        return ChangeSet()
+    if not is_node(name, node2):
+        return ChangeSet()
+    if node1 == node2:
+        return ChangeSet()
+    if status != PIPE_STATUS_OPEN and status != PIPE_STATUS_CLOSED and status != PIPE_STATUS_CV:
+        return ChangeSet()
+
+    sql = f"insert into _link (id, type) values ('{id}', '{PIPE}');"
+    sql += f"\ninsert into pipes (id, node1, node2, length, diameter, roughness, minor_loss, status) values ('{id}', '{node1}', '{node2}', {length}, {diameter}, {roughness}, {minor_loss}, '{status}');"
+
+    undo = f"delete from pipes where id = ''{id}'';"
+    undo += f"\ndelete from _link where id = ''{id}'';"
+
+    write(name, sql)
+    add_operation(name, sql.replace("'", "''"), undo, 'add_pipe', API_ADD, PIPE, id)
+    return get_current_change_set(name)
+
+
+def get_pipe(name: str, id: str) -> dict[str, Any] | None:
+    row = _query_pipe(name, id)
+    if row == None:
+        return None
+
+    ps: dict[str, str] = {}
+    ps['id'] = id
+    ps['node1'] = row['node1']
+    ps['node2'] = row['node2']
+    ps['length'] = float(row['length'])
+    ps['diameter'] = float(row['diameter'])
+    ps['roughness'] = float(row['roughness'])
+    ps['minor_loss'] = float(row['minor_loss'])
+    ps['status'] = row['status']
+    return ps
+
+
+def set_pipe(name: str, id: str, properties: dict[str, Any]) -> ChangeSet:
+    if not is_pipe(name, id):
+        return ChangeSet()
+    if 'node1' in properties:
+        if not is_node(name, properties['node1']) or _get_pipe_node2(name, id) == properties['node1']:
+            return ChangeSet()
+    if 'node2' in properties:
+        if not is_node(name, properties['node2']) or _get_pipe_node1(name, id) == properties['node2']:
+            return ChangeSet()
+    if 'node1' in properties and 'node2' in properties:
+        if properties['node1'] == properties['node2']:
+            return ChangeSet()
+    if 'status' in properties:
+        if properties['status'] != PIPE_STATUS_OPEN and properties['status'] != PIPE_STATUS_CLOSED and properties['status'] != PIPE_STATUS_CV:
+            return ChangeSet()
+
+    old = Serialize(get_pipe(name, id), schema).to_storage()
+
+    new = get_pipe(name, id)
+    ps: list[str] = []
+    for key in properties:
+        if key in schema and schema[key]['readonly'] == False:
+            new[key] = properties[key]
+            ps.append(key)
+    new = Serialize(new, schema).to_execution()
+
+    sql = f"update pipes set node1 = {new['node1']}, node2 = {new['node2']}, \
+        length = {new['length']}, diameter = {new['diameter']}, roughness = {new['roughness']}, minor_loss = {new['minor_loss']}, status = {new['status']} where id = '{id}';"
+    undo = f"update pipes set node1 = {old['node1']}, node2 = {old['node2']}, \
+        length = {old['length']}, diameter = {old['diameter']}, roughness = {old['roughness']}, minor_loss = {old['minor_loss']}, status = {old['status']} where id = ''{id}'';"
+
+    write(name, sql)
+    add_operation(name, sql.replace("'", "''"), undo, 'set_pipe', API_UPDATE, PIPE, id, ps)
+    return get_current_change_set(name)
+
+
+def delete_pipe(name: str, id: str) -> ChangeSet:
+    row = get_pipe(name, id)
+    if row == None:
+        return ChangeSet()
+
+    old = Serialize(get_pipe(name, id), schema).to_storage()
+
+    sql = f"delete from pipes where id = '{id}';"
+    sql += f"\ndelete from _link where id = '{id}';"
+
+    undo = f"insert into _link (id, type) values (''{id}'', ''{PIPE}'');"
+    undo += f"\ninsert into pipes (id, node1, node2, length, diameter, roughness, minor_loss, status) \
+        values (''{id}'', {old['node1']}, {old['node2']}, {old['length']}, {old['diameter']}, {old['roughness']}, {old['minor_loss']}, {old['status']});"
+
+    write(name, sql)
+    add_operation(name, sql.replace("'", "''"), undo, 'delete_pipe', API_DELETE, PIPE, id)
+    return get_current_change_set(name)
+
+
+'''
 def add_pipe(name: str, id: str, node1: str, node2: str, length: float = 0, diameter: float = 0, roughness: float = 0, minor_loss: float = 0, status: str = PIPE_STATUS_OPEN) -> ChangeSet:
     if not is_node(name, node1):
         return ChangeSet()
@@ -125,4 +252,5 @@ def get_pipe_properties(name: str, id: str) -> dict[str, Any] | None:
     ps['roughness'] = float(row['roughness']) if row != None else None
     ps['minor_loss'] = float(row['minor_loss']) if row != None else None
     ps['status'] = row['status'] if row != None else None
-    return ps
+    return ps
+'''